docs: Updated the pull request template

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

@@ -1,11 +0,0 @@
-### AI assistance (if any):
-- List tools here and files touched by them
-
-### Authorship & Understanding
-
-- [ ] I wrote or heavily modified this code myself
-- [ ] I understand how it works end-to-end
-- [ ] I can maintain this code in the future
-- [ ] No undisclosed AI-generated code was used
-- [ ] If AI assistance was used, it is documented below
-

.github/pull_request_template.md

@@ -0,0 +1,18 @@
+### Description
+<!-- What problem is this PR solving? -->
+
+### Alternatives Considered (Optional)
+<!-- What alternatives did you consider? Why did you choose this approach? -->
+
+### AI assistance (if any)
+<!-- Required if AI assistance was used to write or modify code in this PR. -->
+<!-- List tools here -->
+
+### Authorship & Understanding
+
+- [ ] I wrote or heavily modified this code myself. If I didn't, I gave proper attribution to AI assistance above.
+- [ ] I understand how it works end-to-end
+- [ ] I can maintain this code in the future
+- [ ] No undisclosed AI-generated code was used
+- [ ] If AI assistance was used, it is documented above
+

CONTRIBUTING.md

@@ -78,8 +78,9 @@ act -W .github/workflows/release.yml --input_type bump=minor
 
  ## Authorship Policy
 
-All code in this repository is written and reviewed by humans. AI-generated code (e.g., Copilot, ChatGPT,
+All code in this repository is written and reviewed by humans, or AI-generated where explicitly disclosed.
-Claude, etc.) is not permitted unless explicitly disclosed and approved.
+AI-generated code (e.g., Copilot, ChatGPT, Claude, etc.) is permitted only when explicitly disclosed and
+approved. For example: disclosing the use of AI-generated code in a PR description.
 
 Submissions must certify that the contributor understands and can maintain the code they submit.
 

Dockerfile

@@ -82,6 +82,8 @@ RUN set -euo pipefail; \
     chown 1000:1000 /home/agent/.cargo/bin/coyote; \
     rm -rf "$TMPDIR"
 
+COPY --chmod=0755 scripts/docker-entrypoint.sh /usr/local/bin/coyote-entrypoint
+
 FROM scratch
 
 ARG COYOTE_VERSION
@@ -107,4 +109,7 @@ WORKDIR /home/agent/workspace
 
 USER 1000
 
-ENTRYPOINT ["coyote"]
+# tini as PID 1 (as in the sandbox-templates base) reaps orphans and forwards
+# signals; coyote-entrypoint runs coyote by default, or the given command
+# (e.g. the Docker Sandboxes keep-alive) when the first arg is sh/bash/a path.
+ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/coyote-entrypoint"]

README.md

@@ -144,6 +144,13 @@ docker run --rm -it \
   darkalex17/coyote
 ```
 
+Arguments are passed to `coyote`. If the first argument is `sh`, `bash`, or an absolute path, that command runs instead,
+e.g. to get a shell inside the image:
+
+```bash
+docker run --rm -it darkalex17/coyote bash
+```
+
 ### Scripts
 #### Linux/MacOS (`bash`)
 You can use the following command to run a bash script that downloads and installs the latest version of `coyote` for your

assets/agents/adversary/graph.yaml

@@ -205,9 +205,26 @@ nodes:
       confirm the change makes the criterion true, confirm the test targets
       BEHAVIOR (not implementation echo), use ast_grep for structural claims.
       Watch for gamed evidence: a test weakened/deleted so it passes, hardcoded
-      values shaped to the criterion's example, TODO/stub presented as done —
+      values shaped to the criterion's example, TODO/stub presented as done, a
+      mock expectation whose count is relaxed (`AnyTimes`, `MinTimes`, ignored
+      request body) AND whose matcher is permissive (`gomock.Any()`,
+      `mock.Anything`) — it proves a call happened, never that it carried the
+      criterion's values, so it is not a proving test —
       those are PARTIAL or DIVERGED with the gaming named in the complaint.
 
+      Retry / redelivery / idempotency demands: before you mark a criterion PARTIAL
+      or UNMET for lacking a retry, re-run, or "second attempt emits nothing" spec,
+      classify the handler. STATEFUL — it carries something across attempts (emits
+      events, calls an external system, performs an unconditional write, keeps an
+      in-memory or ledger record) — a retry spec is a legitimate demand. STATELESS —
+      each attempt is a pure function of the request plus a conditional store
+      predicate (`WHERE status = 'pending'`, `ended_at IS NULL`, `INSERT … ON
+      CONFLICT DO NOTHING`) and nothing is emitted or ledgered outside that
+      predicate — then "retry produces no event" is a tautology of the mechanism,
+      not a missing behavior: demand at most one test of the predicate itself,
+      never a retry spec. Name the classification and its file:line evidence in
+      the complaint either way.
+
       Execution criteria ("tests pass", "lint clean", "build succeeds") are
       judged ONLY against the recorded verification runs in your prompt — you
       have no execution tools BY DESIGN and must never claim to have run
@@ -297,7 +314,10 @@ nodes:
       The checklist (each hit becomes one complaint with kind, file:line
       location, the violation, and the fix):
       - **Absence** — something the PLAN requires that maps to no criterion and
-        never showed up in the diff (the dog that didn't bark).
+        never showed up in the diff (the dog that didn't bark). A missing
+        retry/redelivery spec is an absence ONLY for a handler that carries state
+        or side effects across attempts; a handler that is a pure function of the
+        request plus a conditional store predicate owes none.
       - **Scope drift / out-of-scope** — the diff touches what the plan's scope
         notes say not to touch, or quietly does extra unplanned work.
       - **Interface/approach substitution** — the plan named an interface,

assets/agents/architect/config.yaml

@@ -6,7 +6,7 @@ description: |
   plan-conformance check (plus a black-box usage-pattern probe for consumer-facing surface), and
   finishes with ONE draft PR (CI checks watched to green) plus tracked follow-up tasks. Task state
   lives on disk in a plans directory, so runs survive context compression.
-version: 2.5.0
+version: 2.8.0
 agent_session: temp
 auto_continue: true
 max_auto_continues: 100
@@ -18,6 +18,7 @@ spawnable_agents:
   - oracle
   - explore
   - librarian
+  - deep-research
   - adversary
   - probe
   - review-gauntlet
@@ -180,7 +181,9 @@ instructions: |
   <label>; authoritative sources preferred; return a distilled, deduplicated checklist"), put the
   returned checklist through the same accept/drop round with the user, and write the ACCEPTED
   items into the plan — as measurable acceptance criteria on the relevant tasks where possible,
-  otherwise as a checklist under `## Quality bar → Long-tail criteria`.
+  otherwise as a checklist under `## Quality bar → Long-tail criteria`. Spawn checklist
+  librarians with `--variables {"research_depth": "deep"}` — checklist distillation is
+  broad-topic research and the default standard depth (3 searches / 8 fetches) starves it.
 
   Ground the breakdown in real code: fan out `explore` agents (load `parallel-research`) across
   {{project_dir}} — and `librarian` for unfamiliar external libraries — to confirm the design's
@@ -373,6 +376,12 @@ instructions: |
        `## Review round N @ <full head SHA>` (lane table, verdicts, what changed since the
        prior round) — never by rewriting the PR description, which carries only the stable
        summary and the required digest sections; comments are the append-only review log.
+       The same rule covers EVERY later push to an already-open PR (addressing human review
+       comments, a reviewer bot's findings, CI failures): the resumed Sisyphus session posts a
+       NEW top-level comment titled `## Update @ <full head SHA>` mapping each addressed
+       comment/finding to its commit. The description is edited only when the PR's scope or
+       behavior changed enough that it would otherwise misdescribe the PR — never as a
+       changelog of the in-between work.
      - **Spawn `adversary`** with the diff base and the criteria pasted in:
 
        ```
@@ -587,7 +596,8 @@ instructions: |
   |-------|---------|
   | `sisyphus` | Implement ONE task's code in {{project_dir}} (its own explore/coder/verify/review loop). One per task. |
   | `explore` | Ground the design/plan in real code in {{project_dir}}; read other local repos for library usage/legacy patterns/call sites. Fan out in parallel. |
-  | `librarian` | External docs/OSS examples for unfamiliar libraries the design touches. |
+  | `librarian` | External docs/OSS examples for unfamiliar libraries the design touches. Design-time/broad topics: pass `--variables {"research_depth": "deep"}` (~3× budgets); default depth is for narrow lookups. One librarian per question beats one broad librarian — deep is for inherently broad questions. |
+  | `deep-research` | Open-ended/exhaustive research that should churn until its critique loop passes (plans sub-questions, deep librarian per question, credibility vetting). Spawn with `--variables {"autonomy": "autonomous"}` — MANDATORY, the supervised default blocks on a human approval gate; raise `reflexion_budget` (default 2) for longer churn. |
   | `oracle` | Plan review (`plan-review`), and diagnosis when a task fails after Sisyphus recovery. |
   | `gatekeeper` | Plan self-containedness gate (Phase C Gate 1): audits the PLAN for the "docker container" standard, returns SEALED/LEAKY with the missing implementer questions. |
   | `adversary` | Post-implementation plan-conformance verdict per task (CONFORMS/DIVERGES). |
@@ -622,6 +632,10 @@ instructions: |
     an unprobeable consumer-facing change is a plan gap to fix, not a checkbox to skip.
   - Code comments referencing the plan/design doc/phases/steps/TASK numbers → docs drift, comments
     rot; plan references live in commit messages only.
+  - Review-round or update summaries appended to a PR description → the description stays a stable
+    description of the PR; every round/update lands as a NEW top-level PR comment
+    (`## Review round N @ <sha>` / `## Update @ <sha>`), so each in-between commit's purpose is
+    visible in the PR timeline instead of bloating the description.
   - A `.env` file landing in any repo → only `.env.example` with placeholder keys is committable;
     `.env` stays gitignored and real values are a follow-up.
   - Dropping a Sisyphus-reported follow-up (not logged in the task's log.md, not in the PR's

assets/agents/coder/graph.yaml

@@ -39,7 +39,7 @@ settings:
 initial_state:
   project_dir: ''
   fix_attempts: 0
-  max_fix_attempts: 3
+  max_fix_attempts: 5
   fix_instructions: ''
   build_output: ''
   tests_output: ''
@@ -222,7 +222,8 @@ nodes:
       3. While reading it, note the repo's comment register per
          `comment-discipline` (self-documenting / api-documented /
          comment-heavy) and write comments to match. When the signal is
-         weak, write NO comment.
+         weak, write NO comment. Every comment must EARN ITS KEEP — if
+         the code already tells the reader, don't add it.
       4. If the change touches boundaries, error paths, jobs, or state
          transitions, also note the logging register per
          `logging-discipline` (logger, message style, payload vs IDs,
@@ -323,7 +324,8 @@ nodes:
         - Suppressed errors (as any, @ts-ignore, #[allow(...)] on unfamiliar
           lints, empty catch blocks)
         - Dishonest naming (get_X that mutates, returns wrong type, etc.)
-        - Useless comments that restate the code
+        - Useless comments that restate the code, or that otherwise don't earn
+          their keep (the code already tells the reader)
         - AI slop (filler prose, multi-paragraph docstrings, defensive
           handling of impossible cases)
 
@@ -408,4 +410,4 @@ nodes:
       {{build_output}}
 
       Last tests output:
-      {{tests_output}}
+      {{tests_output}}

assets/agents/deep-research/README.md

@@ -13,6 +13,13 @@ this agent runs a fixed graph: every request goes through the same
 `plan -> parallel research -> vet -> critique -> synthesize -> verify -> approve`
 pipeline.
 
+Two variables tune a run (pass via `--variables`): `reflexion_budget`
+(default 2) caps the automated critique -> re-research passes — raise it
+to let the run churn until the critique passes — and
+`autonomy: autonomous` skips the final human approval gate so other
+agents can spawn this one autonomously. Each sub-question is researched
+by a spawned `librarian` running at deep budgets.
+
 This agent is also the **canonical reference for the Coyote graph
 system**: it exercises every node type (`script`, `llm`, `rag`, `map`,
 `agent`, `input`, `approval`, `end`) and both static fan-out and

assets/agents/deep-research/graph.yaml

@@ -7,7 +7,12 @@ description: |
   delegates the final write-up to a focused sub-agent, checks that the
   cited sources are reachable, and gates the result behind human
   approval. A reviewer's free-form feedback at the approval step feeds
-  back into another research pass.
+  back into another research pass. Each sub-question is researched by a
+  spawned librarian running at deep budgets. Tunable via --variables:
+  reflexion_budget (default 2) caps the automated critique->re-research
+  passes - raise it to let the run churn until the critique passes;
+  autonomy=autonomous skips the human approval gate (REQUIRED when
+  another agent spawns this one).
 
   This is the canonical Coyote graph-agent reference: it exercises every
   node type (script, llm, rag, map, agent, input, approval, end) and
@@ -27,8 +32,16 @@ conversation_starters:
   - 'How does HTTP/3 differ from HTTP/2?'
   - 'Summarize recent advances in solid-state battery chemistry'
 
+variables:
+  - name: reflexion_budget
+    description: "Max automated critique->re-research passes before synthesis proceeds anyway. Default 2; raise it (4-8) for exhaustive runs that should churn until the critique passes."
+    default: '2'
+  - name: autonomy
+    description: "supervised (default): the finished report stops at the human approval gate. autonomous: skip the gate and return the report directly - REQUIRED when another agent spawns this one (a human gate would block the run)."
+    default: 'supervised'
+
 settings:
-  max_loop_iterations: 40
+  max_loop_iterations: 120
   log_state_snapshots: false
   validate_before_run: true
   max_concurrency: 4
@@ -142,23 +155,11 @@ nodes:
 
   research_one_question:
     id: research_one_question
-    type: llm
+    type: agent
-    instructions: |
+    agent: librarian
-      You are a web research assistant. Investigate the SINGLE question
+    # The leaf research primitive: triage -> doc+OSS search -> cited
-      given to you using your tools: search the web, fetch and read
+    # synthesis. `inputs:` overlays the librarian graph's initial state,
-      pages, and search arXiv for academic sources.
+    # pinning research_depth to deep for every sub-question lane.
-
-      Rules:
-        - Every factual claim must be backed by a real source you
-          actually retrieved. Never fabricate URLs, page titles,
-          authors, or DOIs.
-        - Prefer primary and authoritative sources over aggregators.
-        - Where sources disagree, report the disagreement rather than
-          papering over it.
-        - Put the URL (or DOI) inline next to each claim it supports.
-
-      Return organized findings in plain text. Do not include
-      meta-commentary about the process.
     prompt: |
       Research question: {{question}}
 
@@ -166,16 +167,13 @@ nodes:
       {{local_context}}
 
       {{research_feedback}}
-    tools:
+    inputs:
-      - web_search_coyote
+      research_depth: deep
-      - fetch_url_via_curl
+    timeout: 1900
-      - search_arxiv
-      - mcp:ddg-search
-    max_iterations: 10
     max_attempts: 2
     state_updates:
       finding: '{{output}}'
-    # On failure the engine writes "LLM node ...failed: <chain>" into `finding`
+    # On failure the engine writes "Agent node failed: <chain>" into `finding`
     # via the state_updates above BEFORE routing to the fallback. The marker
     # is branch-local: a map branch's fallback must stay inside the branch.
     fallback: question_fault
@@ -312,6 +310,13 @@ nodes:
     id: verify_sources
     type: script
     script: scripts/verify_sources.py
+    next: approval_gate
+
+  approval_gate:
+    id: approval_gate
+    type: script
+    description: Autonomy router - autonomous runs (spawned by another agent) skip the human approval gate and end accepted with the source check + pipeline notes attached; supervised (default) proceeds to the approval node. A crash fails forward via `next` to approve, the safe human-gated direction.
+    script: scripts/approval_gate.py
     next: approve
 
   approve:
@@ -348,6 +353,15 @@ nodes:
     type: end
     output: '{{report}}{{pipeline_notes}}'
 
+  end_autonomous:
+    id: end_autonomous
+    type: end
+    output: |
+      {{report}}
+
+      ----
+      {{source_check}}{{pipeline_notes}}
+
   end_rejected:
     id: end_rejected
     type: end

assets/agents/deep-research/scripts/approval_gate.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+"""Autonomy router for deep-research's approval gate.
+
+Runs after verify_sources. When the `autonomy` variable is
+'autonomous' (the run was spawned by another agent — architect or
+sisyphus research tiers — with no human at the terminal), the report
+skips the human approval node and ends accepted: the reflexion loop
+already served as the quality gate, and end_autonomous carries the
+source check + pipeline notes with the report so the caller sees them.
+Any other value (default 'supervised') proceeds to the human approval
+gate unchanged.
+
+Routing (`_next`):
+  - autonomy == 'autonomous' -> end_autonomous
+  - anything else            -> approve
+
+Fail-safe: a crash here fails FORWARD via the node's `next` to
+`approve` — the safe, human-gated direction.
+"""
+import json
+import os
+
+
+def load_state():
+    if path := os.environ.get("GRAPH_STATE_FILE"):
+        with open(path) as f:
+            return json.load(f)
+    return json.loads(os.environ.get("GRAPH_STATE", "{}"))
+
+
+def main():
+    state = load_state()
+    autonomy = str(state.get("autonomy") or "supervised").strip().lower()
+    target = "end_autonomous" if autonomy == "autonomous" else "approve"
+    print(json.dumps({"_next": target}))
+
+
+main()

assets/agents/deep-research/scripts/question_fault.py

@@ -4,10 +4,11 @@
 Reached ONLY via research_one_question's `fallback:` route inside the
 `research_each_question` map branch (branch-local — a map branch's fallback
 must stay inside the branch subgraph). Grounded in engine behavior: on
-llm-node failure the engine writes "LLM node …failed: <chain>" into
+branch failure the engine writes its failure text into `finding` via the
-`finding` via the node's state_updates BEFORE routing to the fallback (on
+node's state_updates BEFORE routing to the fallback — "Agent node failed:
-success the same key holds the researched findings, which never start with
+<chain>" now that the branch spawns a librarian agent, "LLM node …failed:
-the "LLM node" prefix). This node normalizes the failure text into a
+<chain>" for an llm branch (on success the same key holds the researched
+findings, which never start with either prefix). This node normalizes the failure text into a
 PIPELINE-FAULT finding and the chain ends here — the map collects the fault
 as the lane's `finding`, so one dead research lane never sinks the whole
 map. combine_findings later lifts PIPELINE-FAULT findings into
@@ -53,7 +54,7 @@ def main():
     state = load_state()
     raw = state.get("finding")
     detail = raw.strip().replace("\n", " ") if isinstance(raw, str) else ""
-    if not detail.startswith("LLM node"):
+    if not detail.startswith(("LLM node", "Agent node")):
         detail = "the research lane died without recording a failure detail"
     if len(detail) > MAX_DETAIL_CHARS:
         detail = detail[: MAX_DETAIL_CHARS - 1] + "…"

assets/agents/deep-research/scripts/reflexion_gate.py

@@ -2,7 +2,8 @@
 """Reflexion gate for deep-research.
 
 Runs after `critique` has reviewed the current research findings. If the
-critique's verdict is REVISE and the reflexion budget is not spent,
+critique's verdict is REVISE and the reflexion budget (the graph's
+`reflexion_budget` variable, default 2) is not spent,
 loops back to `research` with the critique attached as
 `research_feedback`, so the retry is informed rather than a blind
 re-run. Otherwise it proceeds to `synthesize`.
@@ -26,9 +27,11 @@ import json
 import os
 import re
 
-# Automated revision passes allowed. `research` runs at most
+# Default automated revision passes when the `reflexion_budget` variable
-# MAX_REFLEXION_REVISIONS + 1 times per user pass. Bump to allow more.
+# is absent or malformed. `research` runs at most budget + 1 times per
-MAX_REFLEXION_REVISIONS = 2
+# user pass. Callers raise it via --variables {"reflexion_budget": "6"}
+# to let the run churn until the critique passes.
+DEFAULT_REFLEXION_REVISIONS = 2
 
 
 def load_state():
@@ -69,8 +72,9 @@ def main():
     critique = state.get("critique") or ""
     verdict = parse_verdict(critique)
     attempts = as_int(state.get("research_attempts"))
+    budget = as_int(state.get("reflexion_budget"), DEFAULT_REFLEXION_REVISIONS)
 
-    if verdict == "REVISE" and attempts < MAX_REFLEXION_REVISIONS:
+    if verdict == "REVISE" and attempts < budget:
         feedback = (
             "A reviewer judged the previous research pass incomplete. "
             "Address every point in the critique below:\n\n" + critique

assets/agents/finding-verifier/graph.yaml

@@ -174,7 +174,7 @@ nodes:
       - fs_read
       - fs_cat
       - fs_grep
-    max_iterations: 14
+    max_iterations: 28
     max_attempts: 2
     state_updates:
       verdict: '{{output}}'

assets/agents/librarian/graph.yaml

@@ -6,13 +6,16 @@ description: |
   preamble. The "external grep" sibling of explore (which handles
   internal/codebase grep). Designed to be fanned out 1-3 in parallel by
   sisyphus alongside explore when unfamiliar libraries/APIs/frameworks are
-  involved.
+  involved. Supports research_depth=deep (via --variables) for broad
+  design-time topics: ~3x the search/OSS/fetch budgets of the standard
+  quick-lookup mode.
 
 version: '1.0'
 
 global_tools:
   - web_search_coyote.sh
   - fetch_url_via_curl.sh
+  - search_arxiv.sh
 
 mcp_servers:
   - ddg-search
@@ -26,11 +29,14 @@ variables:
   - name: project_dir
     description: Project directory for context (unused in MVP but reserved for future iterations).
     default: '.'
+  - name: research_depth
+    description: "standard (default) = quick targeted lookup budgets. deep = design-time research: ~3x search/OSS/fetch budgets for broad topics (best-practice checklists, architecture surveys)."
+    default: 'standard'
 
 settings:
   max_loop_iterations: 12
   log_state_snapshots: true
-  timeout: 600
+  timeout: 1800
 
 initial_state:
   language_ecosystem: 'general'
@@ -117,7 +123,7 @@ nodes:
   search:
     id: search
     type: llm
-    description: Identify 3-5 authoritative documentation sources via ddg-search.
+    description: Identify authoritative documentation sources via ddg-search (3-5 standard depth, 6-12 deep).
     skills_enabled: true
     enabled_skills:
       - ai-slop-remover
@@ -129,7 +135,10 @@ nodes:
       Priority order:
         1. Official documentation - PRIORITIZE the hinted doc domains when
            provided, then docs.X.org / readthedocs.io / MDN / vendor docs
-        2. Specifications (RFCs, W3C, ECMA, IEEE)
+        2. Specifications (RFCs, W3C, ECMA, IEEE) and academic sources -
+           the search_arxiv tool is available; use it when the topic is
+           academic/research-flavored (arXiv/DOI links count as
+           authoritative)
         3. Credible secondary references (PEPs, official blog posts) - only
            if 1-2 are sparse
 
@@ -142,14 +151,19 @@ nodes:
 
       ## Search budget and fail-fast rules
 
-      You have a HARD BUDGET of 3 search calls total. After 3 calls, stop
+      Your budget is set by the `Research depth` line in the prompt:
-      calling tools and produce your final answer with whatever you have.
+        - standard -> HARD BUDGET of 3 search calls total.
+        - deep     -> HARD BUDGET of 10 search calls total; spend the extra
+          calls covering DISTINCT subtopics of the research topic, never
+          re-running near-duplicate queries.
+      After the budget is spent, stop calling tools and produce your final
+      answer with whatever you have.
 
       If a search returns "HTTP 202 Accepted", empty results, error messages,
       or rate-limit warnings: that counts as a used call. Do not retry the
       same query - either rephrase OR give up.
 
-      If after 3 calls you have NO usable URLs, output exactly:
+      If after spending the budget you have NO usable URLs, output exactly:
 
         NO_AUTHORITATIVE_SOURCES_FOUND
         Reason: <one line>
@@ -168,9 +182,11 @@ nodes:
         URL: <full url>
         ...
 
-      Output 3-5 source blocks. No prose intro, no closing summary.
+      Output 3-5 source blocks (standard depth) or 6-12 (deep). No prose
+      intro, no closing summary.
     prompt: |
       Research topic: {{initial_prompt}}
+      Research depth: {{research_depth}}
 
       Triage hints:
         - Language/ecosystem: {{language_ecosystem}}
@@ -183,8 +199,9 @@ nodes:
       pathlib` style queries).
     tools:
       - mcp:ddg-search
+      - search_arxiv
       - web_search_coyote
-    max_iterations: 15
+    max_iterations: 30
     state_updates:
       search_output: '{{output}}'
     fallback: synthesize
@@ -193,7 +210,7 @@ nodes:
   search_oss:
     id: search_oss
     type: llm
-    description: Find 2-3 production OSS examples relevant to the topic via the personal-github MCP.
+    description: Find production OSS examples relevant to the topic via the personal-github MCP (2-3 standard depth, 4-8 deep).
     skills_enabled: true
     enabled_skills:
       - ai-slop-remover
@@ -219,8 +236,12 @@ nodes:
 
       ## Search budget and fail-fast rules
 
-      HARD BUDGET: 8 tool calls total. After 8 calls, stop and output what
+      Your budget is set by the `Research depth` line in the prompt:
-      you have - even one or two examples is fine.
+        - standard -> HARD BUDGET of 8 tool calls total; output 2-3 blocks.
+        - deep     -> HARD BUDGET of 20 tool calls total; output 4-8 blocks
+          across DIFFERENT repos/approaches, not near-duplicates.
+      After the budget is spent, stop and output what you have - even one or
+      two examples is fine.
 
       If you find no production examples, output exactly:
 
@@ -240,10 +261,12 @@ nodes:
 
         REPO: ...
 
-      Output 2-3 blocks. The URL should point to a specific file that
+      Output 2-3 blocks (standard depth) or 4-8 (deep). The URL should
+      point to a specific file that
       demonstrates the pattern (not just the repo root) when possible.
     prompt: |
       Research topic: {{initial_prompt}}
+      Research depth: {{research_depth}}
 
       Triage hints:
         - Language/ecosystem: {{language_ecosystem}}
@@ -254,7 +277,7 @@ nodes:
       Filter to {{language_ecosystem}} repositories when the API allows.
     tools:
       - mcp:personal-github
-    max_iterations: 15
+    max_iterations: 30
     state_updates:
       oss_output: '{{output}}'
     fallback: synthesize
@@ -308,8 +331,10 @@ nodes:
         5. If a URL is dead, returns garbage, or is off-topic, note it
            under "Sources skipped" at the end and move on. Do not retry.
 
-      Budget: max 8 fetches total (across both source lists). Skip
+      Fetch budget, set by the `Research depth` line in the prompt:
-      aggressively.
+        - standard -> max 8 fetches total (across both source lists).
+        - deep     -> max 25 fetches total. Depth buys MORE SOURCES, never
+          re-fetching dead or off-topic URLs - skip aggressively either way.
 
       ## Output format
 
@@ -332,6 +357,7 @@ nodes:
       No flattery, no preamble. Start with `## Findings`.
     prompt: |
       Research topic: {{initial_prompt}}
+      Research depth: {{research_depth}}
 
       Documentation sources (from doc search branch):
       {{search_output}}
@@ -340,7 +366,7 @@ nodes:
       {{oss_output}}
     tools:
       - fetch_url_via_curl
-    max_iterations: 20
+    max_iterations: 45
     state_updates:
       findings: '{{output}}'
     fallback: final_format

assets/agents/probe/config.yaml

@@ -120,7 +120,15 @@ instructions: |
      update — never delete or silence it).
   4. **Clean, local, isolated.** Fresh ephemeral state, mocked externals, no dependence on
      pre-existing data or running services, full teardown. Bounded retries for startup only —
-     never to mask a flaky assertion.
+     never to mask a flaky assertion. Teardown MUST NOT depend on a shell trap firing (a
+     killed or timed-out lane leaks containers — it has happened): pick one unique run
+     prefix up front (e.g. `probe-$$`), give EVERY container you create `--name <prefix>-…`
+     and `--label coyote-probe=<prefix>` (compose: `-p <prefix>`), prefer `docker run --rm`,
+     and make the LAST action before emitting your verdict an explicit sweep:
+     `docker ps -aq --filter label=coyote-probe=<prefix> | xargs -r docker rm -f` (compose:
+     `docker compose -p <prefix> down -v`). The label filter keeps the sweep scoped to YOUR
+     resources — rule 0 still forbids touching anyone else's. A leftover you cannot remove
+     is a finding to REPORT in the verdict, never to silence.
   5. **Classify every failure** as BUG / EXPECTED-CHANGE / ENV per the skill table. The verdict
      depends on the classification being honest.
   6. **Committed tests are the deliverable** alongside the verdict: write them where the repo's

assets/agents/review-gauntlet/README.md

@@ -14,7 +14,7 @@ flowchart TD
     parse -. "fallback" .-> pfault["parse_fault<br/>(script: PIPELINE-FAULT marker)"]
     pfault --> gate
     signals --> select["select_lanes<br/>(llm: ADDITIVE-only judgment)"]
-    select --> build["build_items<br/>(script: rules floor ∪ additions;<br/>forced lanes override exactly)"]
+    select --> build["build_items<br/>(script: rules floor ∪ additions;<br/>forced lanes add)"]
     select -. "fallback" .-> dlanes["default_lanes<br/>(script: deterministic degraded<br/>selection — wider, never narrower)"]
     dlanes --> build
     build --> mcr["map: code-review"] & madv["map: adversary"] & msec["map: security"] & mpb["map: probe"]
@@ -155,7 +155,7 @@ Plan / acceptance criteria:
 Local-run recipe / usage suites:
 <how to boot the service locally + where existing suites live — enables the probe lane>
 
-Forced lanes: (optional — e.g. 'adversary, probe' to run exactly those)" \
+Forced lanes: (optional, ADDITIVE — e.g. 'adversary, probe' run on top of the computed selection; forcing never drops the always-on floor)" \
   --variables {"verification_commands": "[\"cargo test --all\", \"cargo clippy -- -D warnings\"]"}
 ```
 
@@ -210,9 +210,9 @@ verbatim.
   (`'[]'` ⇒ "none declared"); a declaration that is not a JSON array of
   strings executes nothing and records a `PIPELINE-FAULT`, which the
   adversary lane reports as DIVERGES and the gate as BLOCKED.
-- Signals failures degrade gracefully: if git can't compute the diff, lane
+- Signals failures degrade WIDER: if git can't compute the diff, the surface
-  selection falls back to caller context + forced lanes, and the report notes
+  is unknown — the security lane is added (and probe, when a local-run recipe
-  it. The auth-path regex deliberately over-fires (`auth(?!or)` matches
+  exists) on top of caller context + forced lanes, and the report notes it. The auth-path regex deliberately over-fires (`auth(?!or)` matches
   auth/authn/authz/oauth but not "author") — the safe direction, since signals
   only ever ADD the security lane.
 - Requires the `code-reviewer`, `adversary`, `security-reviewer`, and `probe`

assets/agents/review-gauntlet/graph.yaml

@@ -107,10 +107,14 @@ nodes:
       You extract the facts of a review request into structured fields.
       EXTRACTION ONLY — do not decide which review lanes should run.
 
-      - `diff_spec`: the git diff specification the caller named — a ref
+      - `diff_spec`: the git diff specification the caller named, as a BARE
-        range ("main...HEAD", "HEAD~3..HEAD"), a single ref, or the literal
+        revision token usable verbatim in `git diff <spec>` — a ref range
-        "worktree" for uncommitted changes against HEAD. When the caller
+        ("main...HEAD", "HEAD~3..HEAD"), a single ref, or the literal
-        did not name one, use "worktree".
+        "worktree" for uncommitted changes against HEAD. NEVER prose, a
+        command, or a path: from "run get_diff --base origin/main" extract
+        "origin/main...HEAD"; from "diff origin/main...HEAD in ~/code/x"
+        extract "origin/main...HEAD". When the caller did not name one, use
+        "worktree".
       - `project_dir_in`: the repository directory the caller named as holding
         the change (absolute path preferred); empty string when the caller
         named none.
@@ -127,7 +131,8 @@ nodes:
         pointers for black-box probing (how to boot the service, where the
         suites live). Empty string when the caller supplied none.
       - `forced_lanes`: lanes the caller explicitly demanded (verbatim
-        names). Empty array = automatic selection.
+        names). Empty array = automatic selection. Forcing is ADDITIVE
+        downstream: it widens the computed selection, never replaces it.
       - `extra_context`: any remaining caller context reviewers should see,
         condensed.
     prompt: |
@@ -261,7 +266,7 @@ nodes:
   build_items:
     id: build_items
     type: script
-    description: Deterministic lane builder — hard rules are the floor, LLM flags may only add, forced lanes override exactly. Emits one 0-or-1-item list per lane; an empty list skips that lane's map. On a re-run pass (retry_lanes non-empty) it skips selection and emits items only for those lanes, each carrying its attempt number.
+    description: Deterministic lane builder — hard rules are the floor, LLM flags may only add, forced lanes are ADDITIVE (selection only ever widens; unavailable signals widen it too). Emits one 0-or-1-item list per lane; an empty list skips that lane's map. On a re-run pass (retry_lanes non-empty) it skips selection and emits items only for those lanes, each carrying its attempt number.
     script: scripts/build_items.py
     timeout: 30
     next: [map_code_review, map_adversary, map_security, map_probe]

assets/agents/review-gauntlet/scripts/build_items.py

@@ -1,14 +1,20 @@
 #!/usr/bin/env python3
 """Deterministic lane builder for the review gauntlet.
 
-Selection = hard rules (the floor) ∪ LLM additions; forced lanes override
+Selection = hard rules (the floor) ∪ LLM additions ∪ caller-forced lanes.
-everything exactly. Emits one 0-or-1-item list per lane: an empty list makes
+Forcing is ADDITIVE: it can only widen the computed selection — honoring a
-that lane's map node run zero branches (map-over-nothing), which IS the
+forced list as the exact set once dropped the always-on code-review lane in
-skip mechanism — no dynamic routing anywhere.
+a live run. Emits one 0-or-1-item list per lane: an empty list makes that
+lane's map node run zero branches (map-over-nothing), which IS the skip
+mechanism — no dynamic routing anywhere.
 
 The LLM's add_* flags can only ADD lanes. A flag that is false never
 removes a lane the hard rules selected.
 
+Unavailable diff signals (malformed spec, git failure) mean the surface is
+UNKNOWN — selection degrades WIDER (security on; probe when a recipe
+exists), never narrower.
+
 A re-run pass (retry_gate emitted `retry_lanes`) skips selection: only the
 named lanes get an item, stamped with their attempt number, and every other
 lane maps over nothing — retry_gate restores their earlier reports.
@@ -101,56 +107,90 @@ def main():
         (forced.append(canon) if canon else unknown.append(str(lane)))
 
     reasons = []
-    if forced:
+    lanes = {"code-review"}
-        lanes = set(forced)
+    reasons.append(
-        reasons.append(f"forced lanes honored exactly: {sorted(lanes)}")
+        "code-review: always on — the gauntlet is only spawned for non-trivial work"
-    else:
+    )
-        lanes = {"code-review"}
+    if text("plan_context"):
+        lanes.add("adversary")
+        reasons.append("adversary: a spec/plan/acceptance-criteria context is present")
+    if (
+        state.get("touches_auth")
+        or state.get("touches_deps")
+        or state.get("touches_exec")
+        or state.get("security_posture") == "hardened"
+    ):
+        lanes.add("security")
         reasons.append(
-            "code-review: always on — the gauntlet is only spawned for non-trivial work"
+            "security: attack-surface signals (auth/deps/exec) or hardened posture"
         )
-        if text("plan_context"):
+    if state.get("consumer_surface") and text("probe_context"):
-            lanes.add("adversary")
+        lanes.add("probe")
-            reasons.append("adversary: a spec/plan/acceptance-criteria context is present")
+        reasons.append(
-        if (
+            "probe: consumer-facing surface changed and a local-run recipe/suite pointer exists"
-            state.get("touches_auth")
+        )
-            or state.get("touches_deps")
+
-            or state.get("touches_exec")
+    # Unavailable signals (malformed diff spec, git failure) = surface UNKNOWN.
-            or state.get("security_posture") == "hardened"
+    # Degrade WIDER, never narrower — a run without signals once silently
-        ):
+    # dropped the security and probe lanes.
+    if text("signals_summary") == "signals unavailable":
+        if "security" not in lanes:
             lanes.add("security")
             reasons.append(
-                "security: attack-surface signals (auth/deps/exec) or hardened posture"
+                "security: diff signals unavailable — surface unknown, degrading wider"
             )
-        if state.get("consumer_surface") and text("probe_context"):
+        if "probe" not in lanes and text("probe_context"):
             lanes.add("probe")
             reasons.append(
-                "probe: consumer-facing surface changed and a local-run recipe/suite pointer exists"
+                "probe: diff signals unavailable and a local-run recipe/suite pointer "
+                "exists — degrading wider"
             )
 
-        # LLM judgment is additive-only.
+    # LLM judgment is additive-only.
-        llm_why = text("lane_reasons")[:300]
+    llm_why = text("lane_reasons")[:300]
-        for flag, lane in (
+    for flag, lane in (
-            ("add_code_review", "code-review"),
+        ("add_code_review", "code-review"),
-            ("add_adversary", "adversary"),
+        ("add_adversary", "adversary"),
-            ("add_security", "security"),
+        ("add_security", "security"),
-            ("add_probe", "probe"),
+        ("add_probe", "probe"),
-        ):
+    ):
-            if state.get(flag) and lane not in lanes:
+        if state.get(flag) and lane not in lanes:
-                if lane == "probe" and not text("probe_context"):
+            if lane == "probe" and not text("probe_context"):
-                    reasons.append(
+                reasons.append(
-                        "probe: requested by lane judgment but skipped — no local-run "
+                    "probe: requested by lane judgment but skipped — no local-run "
-                        "recipe/suite pointer (a probe without one is guaranteed INCONCLUSIVE)"
+                    "recipe/suite pointer (a probe without one is guaranteed INCONCLUSIVE)"
-                    )
+                )
-                    continue
+                continue
-                if lane == "adversary" and not text("plan_context"):
+            if lane == "adversary" and not text("plan_context"):
-                    reasons.append(
+                reasons.append(
-                        "adversary: requested by lane judgment but skipped — no spec/plan "
+                    "adversary: requested by lane judgment but skipped — no spec/plan "
-                        "to check conformance against"
+                    "to check conformance against"
-                    )
+                )
-                    continue
+                continue
-                lanes.add(lane)
+            lanes.add(lane)
-                reasons.append(f"{lane}: added by lane-selection judgment — {llm_why}")
+            reasons.append(f"{lane}: added by lane-selection judgment — {llm_why}")
+
+    # Caller-forced lanes are ADDITIVE: they widen the computed selection,
+    # never replace it. (Honoring them as the exact set dropped code-review —
+    # documented as always-on — and adversary in a live run.) Forcing also
+    # bypasses the context guards above: the caller demanded the lane, so it
+    # runs, with the expectation named in the summary.
+    if forced:
+        newly = sorted(set(forced) - lanes)
+        lanes |= set(forced)
+        reasons.append(
+            f"forced lanes (additive): {sorted(set(forced))}"
+            + (f" — newly added: {newly}" if newly else " — all already selected")
+        )
+        if "probe" in forced and not text("probe_context"):
+            reasons.append(
+                "probe: forced without a local-run recipe/suite pointer — expect INCONCLUSIVE"
+            )
+        if "adversary" in forced and not text("plan_context"):
+            reasons.append(
+                "adversary: forced without spec/plan context — it fails closed "
+                "(DIVERGES) without extractable criteria"
+            )
 
     if unknown:
         reasons.append(f"ignored unknown forced lane name(s): {unknown}")

assets/agents/review-gauntlet/scripts/default_lanes.py

@@ -8,8 +8,10 @@ AND a local-run recipe exists (build_items gates probe the same way — a
 probe without a recipe is INCONCLUSIVE by construction),
 plus security when the attack-surface signals (auth/deps/exec) or a hardened
 posture demand it, unioned with any lanes the caller forced (canonicalized
-with the same aliases build_items uses) — which build_items honors exactly,
+with the same aliases build_items uses) — which build_items honors
-so selection degrades WIDER, never narrower. The degradation note goes into
+ADDITIVELY, so selection degrades WIDER, never narrower. Unavailable diff
+signals also widen: unknown surface adds security (and probe when a
+local-run recipe exists). The degradation note goes into
 `lanes_degraded`; build_items folds it into lanes_summary so the final
 report names the degradation.
 
@@ -72,6 +74,11 @@ def main():
         or state.get("security_posture") == "hardened"
     ):
         lanes.add("security")
+    # Unavailable signals = surface UNKNOWN → widen (mirrors build_items).
+    if (state.get("signals_summary") or "") == "signals unavailable":
+        lanes.add("security")
+        if isinstance(probe_context, str) and probe_context.strip():
+            lanes.add("probe")
     # Caller-forced lanes survive degradation — union, never overwrite.
     for lane in state.get("forced_lanes") or []:
         if canon := ALIASES.get(str(lane).strip().lower()):

assets/agents/review-gauntlet/scripts/signals.py

@@ -3,9 +3,10 @@
 
 Pure git — no LLM judgment. Every signal is computed from the changed-file
 list and the added lines of the diff. Failures never sink the gauntlet:
-on any error the script reports `signals_error` and leaves the defaults
+on any error the script reports `signals_error` and marks the signals
-(false/empty) in place, which biases lane selection toward the caller's
+unavailable — downstream (build_items / default_lanes) treats that as
-context and forced lanes.
+UNKNOWN surface and degrades WIDER (security on; probe when a recipe
+exists), on top of caller context and forced lanes.
 """
 
 import json
@@ -26,6 +27,19 @@ proj = os.path.expanduser(
     (state.get("project_dir_in") or "").strip() or state.get("project_dir") or "."
 )
 spec = (state.get("diff_spec") or "worktree").strip()
+spec_raw = spec
+# The parse stage should emit a bare revision token, but callers write prose
+# and extraction drifts ("run get_diff --base origin/main" once reached
+# `git diff` verbatim, killing the signals — and with them the security and
+# probe lanes). Deterministically recover a usable spec before giving up.
+_TOKEN = r"[\w./~^@{}-]+"
+if spec not in ("", "worktree") and not re.fullmatch(
+    rf"{_TOKEN}(\.\.\.?{_TOKEN})?", spec
+):
+    if m := re.search(rf"({_TOKEN}\.\.\.?{_TOKEN})", spec):
+        spec = m.group(1)  # a revision range buried in prose
+    elif m := re.search(rf"--base[= ]({_TOKEN})", spec):
+        spec = f"{m.group(1)}...HEAD"  # the get_diff idiom
 
 
 def git(*args):
@@ -112,13 +126,18 @@ try:
             ),
             "docs_only": bool(files)
             and all(re.search(r"\.(md|rst|txt|adoc)$", f, re.I) for f in files),
-            "signals_summary": f"{len(files)} file(s) changed (diff: {spec})",
+            "signals_summary": f"{len(files)} file(s) changed (diff: {spec})"
+            + (f" — spec normalized from {spec_raw!r}" if spec != spec_raw else ""),
         }
     )
 except Exception as e:  # noqa: BLE001 — degraded signals must not sink the gauntlet
+    what = f"diff spec {spec!r}" + (
+        f", normalized from {spec_raw!r}" if spec != spec_raw else ""
+    )
     out["signals_error"] = (
-        f"NOTE: diff signals could not be computed ({e}); "
+        f"NOTE: diff signals could not be computed ({what}: {e}); surface UNKNOWN — "
-        "lane selection falls back to caller context and forced lanes."
+        "lane selection degrades WIDER (security lane added; probe eligible when a "
+        "local-run recipe exists), plus caller context and forced lanes."
     )
     out["signals_summary"] = "signals unavailable"
 

assets/agents/sisyphus/config.yaml

@@ -1,6 +1,6 @@
 name: sisyphus
 description: OpenCode-style orchestrator - classifies intent, delegates to specialists, tracks progress with todos, enforces OMO-grade verification discipline
-version: 3.13.0
+version: 3.17.0
 
 agent_session: temp
 auto_continue: true
@@ -11,6 +11,7 @@ can_spawn_agents: true
 spawnable_agents:
   - explore
   - librarian
+  - deep-research
   - coder
   - oracle
   - code-reviewer
@@ -157,7 +158,8 @@ instructions: |
   | Agent | Use For | Characteristics |
   |-------|---------|-----------------|
   | `explore` | Find patterns in THIS codebase, understand local code | Read-only, returns findings, fan out as many as the task warrants — one per distinct search angle, module, or concern. Large codebases or cross-cutting tasks should spawn 5–15+. |
-  | `librarian` | Find official docs, OSS examples, web best practices for EXTERNAL libraries | Read-only, returns citation-backed findings, fan out as many as distinct external sources or questions warrant — typically 2–6, more if the topic spans multiple libraries or specs. |
+  | `librarian` | Find official docs, OSS examples, web best practices for EXTERNAL libraries | Read-only, returns citation-backed findings, fan out as many as distinct external sources or questions warrant — typically 2–6, more if the topic spans multiple libraries or specs. Default depth = quick-lookup budgets; for a BROAD topic (design research, best-practice surveys, architecture comparisons) pass `--variables {"research_depth": "deep"}` (~3× search/fetch budgets). Still prefer several narrow librarians over one giant one — deep is for questions that are inherently broad, not a substitute for fan-out. |
+  | `deep-research` | Open-ended investigation that must CHURN until solid — plans sub-questions, fans out a deep librarian per question, vets source credibility, runs a critique→re-research loop | Spawn with `--variables {"autonomy": "autonomous"}` — MANDATORY when spawned as a subagent (the supervised default blocks on a human approval gate). Raise `reflexion_budget` (e.g. "6", default 2) to let it churn longer. Expect hours, not minutes; one per investigation — its internal map is the fan-out. |
   | `coder` | Write/edit files, implement features | Graph agent: plan → approval → implement → verify build+tests → self_review → bounded fix-loop |
   | `oracle` | Architecture, complex debugging, review, plan review | Advisory, blocking — never answer the user before collecting Oracle results |
   | `step-runner` | Execute ONE step of a phased plan repo (Phase 8) | Graph agent: orient → staleness check → coder → verify → handoff → user approval gate |
@@ -575,7 +577,7 @@ instructions: |
 
   When you write or modify files yourself (rather than delegating to coder):
 
-  - **Calibrate comments before writing.** Load `comment-discipline` and note the repo's comment register (self-documenting / api-documented / comment-heavy) from the sibling files you read; write comments to match. When the signal is weak, write NO comment.
+  - **Calibrate comments before writing.** Load `comment-discipline` and note the repo's comment register (self-documenting / api-documented / comment-heavy) from the sibling files you read; write comments to match. When the signal is weak, write NO comment. In every register, a comment must EARN ITS KEEP — if the code already tells the reader, don't add it.
   - **Calibrate logging before writing.** When the change touches boundaries, error paths, jobs, or state transitions, load `logging-discipline` and note the repo's logging register (logger, message style, payload vs IDs, level semantics) from the same sibling reads; match it. No discernible convention → its best-judgment defaults. Never leave a new error path silently swallowed, and never delete existing log lines as drive-by cleanup.
   - **For editing an existing file**, prefer `fs_patch`. It's a surgical edit that preserves unchanged content. Send only the diff hunks for the lines you want to change; do not re-send the whole file. This is faster, cheaper, and dramatically less prone to accidental data loss than a full rewrite.
   - **For writing a NEW file or doing a COMPLETE rewrite**, use `fs_write`. Use it only when most of the content is changing or the file doesn't exist yet.
@@ -709,6 +711,13 @@ instructions: |
     description: in-place edits destroy the review history and hide which commits each round
     actually reviewed. Comments are the append-only review log; the SHA in the title names
     exactly what was reviewed.
+    The same discipline covers EVERY later push to a PR you (or your run) opened — addressing
+    human review comments, a reviewer bot's findings, CI failures, or any other PR event: post
+    a NEW top-level PR comment titled `## Update @ <full head SHA>` mapping each addressed
+    comment/finding to the commit that addresses it (one line each), plus anything
+    deliberately NOT addressed and why. NEVER append update summaries to the description.
+    Edit the description ONLY when the PR's actual scope or behavior changed enough that it
+    would otherwise misdescribe the PR — it stays a description, never a changelog.
 
     **Close the loop.** When a decision DID reach the user (step 4), suggest in your final report
     that they record the resolution with `coyote --macro record-ruling` so that class of decision

assets/config-template.yaml

@@ -186,6 +186,7 @@ save_session: null               # Controls the persistence of the session. If t
 compression_threshold: 4000      # Compress the session when the token count reaches or exceeds this threshold
 compression_keep_last: 0         # Number of most-recent messages to keep visible after compression (0 = compress all messages)
 compression_model: null          # Model to use for session compression (e.g. 'openai:gpt-4o-mini'); defaults to the session's current model
+compression_safety_valve: 0.8    # Force compression when the last real request's prompt size (or the local estimate) reaches this fraction of the model's max_input_tokens, even if compression_threshold would not fire (0 = disabled)
 summarization_prompt: null       # The text prompt used for creating a concise summary of session messages. If null, uses built-in default
 summary_context_prompt: null     # The text prompt used for including the summary of the entire session as context to the model. If null, uses built-in default
 max_tool_result_chars: null      # Cap on tool result characters forwarded to the model per call (null = no cap)
@@ -276,6 +277,7 @@ sync_models_ttl_hours: 24        # Hours before the synced model catalog is cons
 # All clients have the following configuration:
 # - type: xxxx
 #   name: xxxx                                      # Only use it to distinguish clients with the same client type. Optional
+#   extend_models: true                             # Merge the models below on top of the catalog models for this client instead of replacing them. Optional, default false
 #   models:
 #     - name: xxxx                                  # Chat model
 #       max_input_tokens: 100000

assets/skills/code-review/SKILL.md

@@ -89,6 +89,15 @@ These are review findings that only surface in a diff context, not in a whole-fi
   finding (dead weight or a forgotten wiring step). Used in SOME applicable in-diff sites but
   not others = a finding naming the sites that didn't adopt it — half-adopted artifacts are how
   two mechanisms for the same job end up coexisting forever.
+- **"Ignored / redundant request field" claims need a wire-validation check first** — before
+  calling a request/message field ignored, redundant, or dead on some code path because the
+  handler never reads it there, `fs_grep` the boundary contract for that field: proto validation
+  rules (`(validate.rules)`, `buf.validate`), OpenAPI/JSON-schema `required`, struct-tag
+  `required`/`binding`/serde attributes, or a hand-written validator/interceptor. A field the
+  validator MANDATES is load-bearing at the boundary even when the handler ignores it — the
+  honest finding (if any) is "validator requires `<field>` on the `<path>` path that never reads
+  it (`path:line`); relax with `ignore_empty`/`oneof` or document why", never "`<field>` is
+  ignored". No validation found ⇒ the ignored-field finding stands, citing the grep you ran.
 - **Version-literal consistency and freshness** — when the diff bumps a version (image tag,
   tool version, dependency pin), `fs_grep` the repo for other occurrences of the OLD version
   string (compose files, workflows, docs, sibling Dockerfiles) — stragglers are findings. For
@@ -143,6 +152,21 @@ Named adequacy anti-patterns — each is a finding even when coverage looks gree
 - **Leaky fixture** — an integration test against a shared/persistent database inserts fixture
   rows directly with no paired cleanup (deferred delete/teardown/transaction rollback). The
   test passes today and leaves a primary-key landmine for the next run.
+- **Struct-typed args against an inferred schema** — when a struct drives an inferred wire schema
+  (MCP go-sdk, OpenAPI/JSON-schema generators, serde-derived schemas), every field without
+  `omitempty`/pointer/`Option` becomes schema-REQUIRED. Cross-check the optionality the doc
+  strings promise ("X as an alternative to Y") against the tags — a documented-optional field
+  without the omission marker is a live validation bug, not a style nit. And tests that build the
+  request from the typed struct serialize EVERY field (zero values included), so they can never
+  exercise the required-ness check: demand raw-JSON / map-typed tests that OMIT each
+  documented-optional field.
+- **Relaxed call count with a permissive matcher** — a mock expectation whose COUNT is relaxed
+  (`AnyTimes()`, `MinTimes(1)`, `Maybe()`, "called at least once") leaves the ARGUMENT matcher as
+  the only thing asserted; pair it with `gomock.Any()` / `mock.Anything` / `mock.ANY` /
+  `expect.anything()` / an ignored request body and the expectation proves nothing — a call with
+  the wrong ID, wrong quantity, or wrong principal satisfies it. Flag every relaxed-count
+  expectation whose matcher is permissive; the fix pins the load-bearing fields in the matcher
+  (or exact count + captured args).
 
 ## 3. Clarity
 

assets/skills/comment-discipline/SKILL.md

@@ -1,7 +1,7 @@
 ---
 description: Calibrate comment density and style to the repository's existing conventions before writing code. Detects the repo's comment register (self-documenting / api-documented / comment-heavy) from the sibling files you already read for pattern matching, or from a declared policy in workspace instructions, then dictates when a comment is warranted. Default when signal is weak - write NO comment. Complements ai-slop-remover (which bans comments that restate code in every register).
 ---
-You are about to write or modify code. LLMs systematically over-comment — narrating every block, restating signatures, banner-ing sections — and that default is wrong in most repositories. Before writing, determine the repo's **comment register** and match it, exactly the way you already match imports, naming, and error handling.
+You are about to write or modify code. LLMs systematically over-comment — narrating every block, restating signatures, banner-ing sections — and that default is wrong in most repositories. Before writing, determine the repo's **comment register** and match it, exactly the way you already match imports, naming, and error handling. Across every register, one test governs each comment you write: it must **earn its keep**. If the code already tells the reader, the comment doesn't get written — don't add comments you don't need; make the code tell them instead.
 
 ## Step 0: Check for a declared policy first
 

assets/skills/security-review/SKILL.md

@@ -56,6 +56,16 @@ If no posture is given, assume `standard` and say so in the report.
 8. **Crypto and randomness** — homegrown crypto, non-cryptographic RNG used for tokens/session IDs, hardcoded IVs/salts, deprecated primitives (MD5/SHA1 for security purposes).
 9. **Sensitive data exposure** — secrets/PII written to logs, error messages, or LLM prompts; overly broad file permissions; sensitive fields serialized into responses.
 10. **Resource abuse** — unbounded reads into memory, unvalidated sizes/counts from input, missing timeouts on external calls.
+11. **Error-text passthrough on a NEW surface** — a new mount, gateway, adapter, or endpoint that
+    writes an upstream/middleware error's text (`err.Error()`, connect/gRPC `Message()`, a wrapped
+    library message) into its own response body. `fs_grep` the new surface's response writers for
+    interpolated error strings. Default expectation: fixed strings per error class; passthrough
+    needs POSITIVE justification (the upstream text is a documented, stable, caller-facing
+    contract). "The same principal already sees this text on another surface" is NOT a clearance
+    — upstream strings are not a stable contract, grow internal detail over time (verifier
+    internals, allow-list names, hostnames), and the new surface may acquire callers with
+    different trust. Medium by default; High when the passed-through source is an authorizer,
+    token verifier, or anything that names internal identifiers.
 
 ## Ground-truth verification (verify, don't pattern-match)
 

scripts/docker-entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+# Entrypoint for the coyote Docker image. Runs under tini:
+#   ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/coyote-entrypoint"]
+#
+# tini (PID 1) reaps orphaned processes and forwards signals; coyote is not an
+# init and does neither.
+
+case "$1" in
+  sh | bash | /*) exec "$@" ;;
+esac
+
+exec coyote "$@"

src/cli/completer.rs

@@ -1,7 +1,9 @@
 use crate::client::{ModelType, list_models};
 use crate::config::paths;
-use crate::config::{AppConfig, Config, list_agents_with_descriptions, list_sessions};
+use crate::config::{
-use crate::utils::list_file_names;
+    AppConfig, Config, labeled_session_names, list_agents_with_descriptions, sanitize_display_text,
+    session_scope_dirs,
+};
 use crate::vault::Vault;
 use clap_complete::{CompletionCandidate, Shell, generate};
 use clap_complete_nushell::Nushell;
@@ -115,7 +117,11 @@ pub(super) fn bundle_completer(current: &OsStr) -> Vec<CompletionCandidate> {
 }
 
 fn extract_agent_from_args() -> Option<String> {
-    let args: Vec<String> = env::args().collect();
+    extract_agent_from_args_in(env::args())
+}
+
+fn extract_agent_from_args_in<I: IntoIterator<Item = String>>(args: I) -> Option<String> {
+    let args: Vec<String> = args.into_iter().collect();
     let mut i = 0;
     while i < args.len() {
         let arg = &args[i];
@@ -134,19 +140,21 @@ fn extract_agent_from_args() -> Option<String> {
 }
 
 pub(super) fn session_completer(current: &OsStr) -> Vec<CompletionCandidate> {
-    let cur = current.to_string_lossy();
+    session_candidates(
+        &current.to_string_lossy(),
+        extract_agent_from_args().as_deref(),
+    )
+}
 
-    let sessions = if let Some(agent_name) = extract_agent_from_args() {
+fn session_candidates(cur: &str, agent: Option<&str>) -> Vec<CompletionCandidate> {
-        let sessions_dir = paths::agent_data_dir(&agent_name).join("sessions");
+    let (workspace_dir, global_dir) = session_scope_dirs(agent);
-        list_file_names(sessions_dir, ".yaml")
+    labeled_session_names(&workspace_dir, &global_dir)
-    } else {
-        list_sessions()
-    };
-
-    sessions
         .into_iter()
-        .filter(|s| s.starts_with(&*cur))
+        .filter(|(name, _)| name.starts_with(cur))
-        .map(CompletionCandidate::new)
+        .map(|(name, scope)| {
+            CompletionCandidate::new(sanitize_display_text(&name))
+                .help(Some(scope.to_string().into()))
+        })
         .collect()
 }
 
@@ -194,3 +202,112 @@ pub(super) fn secrets_completer(current: &OsStr) -> Vec<CompletionCandidate> {
         Err(_) => vec![],
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::config::default_sessions_dir;
+    use crate::testing::{EnvVarGuard, TestConfigDirGuard};
+    use serial_test::serial;
+    use std::path::Path;
+
+    fn seed(dir: &Path, name: &str) {
+        fs::create_dir_all(dir).unwrap();
+        fs::write(dir.join(format!("{name}.yaml")), "model: x\n").unwrap();
+    }
+
+    fn labeled(candidates: Vec<CompletionCandidate>) -> Vec<(String, Option<String>)> {
+        candidates
+            .into_iter()
+            .map(|c| {
+                (
+                    c.get_value().to_string_lossy().into_owned(),
+                    c.get_help().map(|h| h.to_string()),
+                )
+            })
+            .collect()
+    }
+
+    #[test]
+    #[serial]
+    fn session_completer_labels_scope_and_prefers_workspace() {
+        let _guard = TestConfigDirGuard::new("cli-session-completer");
+        seed(&paths::workspace_sessions_dir(), "both");
+        seed(&default_sessions_dir(), "both");
+        seed(&default_sessions_dir(), "only-global");
+        seed(&paths::workspace_sessions_dir(), "only-ws");
+
+        assert_eq!(
+            labeled(session_completer(OsStr::new(""))),
+            vec![
+                ("both".to_string(), Some("workspace".to_string())),
+                ("only-ws".to_string(), Some("workspace".to_string())),
+                ("only-global".to_string(), Some("global".to_string())),
+            ]
+        );
+        assert_eq!(
+            labeled(session_completer(OsStr::new("on"))),
+            vec![
+                ("only-ws".to_string(), Some("workspace".to_string())),
+                ("only-global".to_string(), Some("global".to_string())),
+            ]
+        );
+    }
+
+    #[test]
+    #[serial]
+    fn session_candidates_use_the_agent_scope_dirs() {
+        let _guard = TestConfigDirGuard::new("cli-agent-session-completer");
+        let _agent_data_dir = EnvVarGuard::unset("A_DATA_DIR");
+        seed(&paths::workspace_agent_sessions_dir("a"), "both");
+        seed(&paths::agent_sessions_dir("a"), "both");
+        seed(&paths::agent_sessions_dir("a"), "agent-global");
+        seed(&default_sessions_dir(), "plain-global");
+
+        assert_eq!(
+            labeled(session_candidates("", Some("a"))),
+            vec![
+                ("both".to_string(), Some("workspace".to_string())),
+                ("agent-global".to_string(), Some("global".to_string())),
+            ]
+        );
+        assert_eq!(
+            labeled(session_candidates("", None)),
+            vec![("plain-global".to_string(), Some("global".to_string()))]
+        );
+    }
+
+    #[test]
+    fn extract_agent_from_args_in_reads_both_flag_forms() {
+        fn args(s: &str) -> Vec<String> {
+            s.split_whitespace().map(str::to_string).collect()
+        }
+        assert_eq!(
+            extract_agent_from_args_in(args("coyote --agent a --session x")),
+            Some("a".to_string())
+        );
+        assert_eq!(
+            extract_agent_from_args_in(args("coyote -a b")),
+            Some("b".to_string())
+        );
+        assert_eq!(
+            extract_agent_from_args_in(args("coyote --agent=c")),
+            Some("c".to_string())
+        );
+        assert_eq!(extract_agent_from_args_in(args("coyote --agent")), None);
+        assert_eq!(extract_agent_from_args_in(args("coyote --session x")), None);
+    }
+
+    #[test]
+    #[serial]
+    fn config_dir_guard_clears_and_restores_the_sessions_dir_override() {
+        let key = crate::utils::get_env_name("sessions_dir");
+        let junk = std::path::PathBuf::from("/nonexistent/junk-sessions");
+        let _outer = EnvVarGuard::set(&key, &junk);
+        {
+            let guard = TestConfigDirGuard::new("cli-sessions-dir-guard");
+            assert!(default_sessions_dir().starts_with(&guard.path));
+        }
+        assert_eq!(default_sessions_dir(), junk);
+    }
+}

src/client/azure_openai.rs

@@ -4,13 +4,15 @@ use super::*;
 use anyhow::Result;
 use serde::Deserialize;
 
-#[derive(Debug, Clone, Deserialize)]
+#[derive(Debug, Clone, Deserialize, Default)]
 pub struct AzureOpenAIConfig {
     pub name: Option<String>,
     pub api_base: Option<String>,
     pub api_key: Option<String>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,
 }

src/client/bedrock.rs

@@ -16,7 +16,7 @@ use reqwest::{Client as ReqwestClient, Method, RequestBuilder};
 use serde::Deserialize;
 use serde_json::{Value, json};
 
-#[derive(Debug, Clone, Deserialize)]
+#[derive(Debug, Clone, Deserialize, Default)]
 pub struct BedrockConfig {
     pub name: Option<String>,
     pub access_key_id: Option<String>,
@@ -25,6 +25,8 @@ pub struct BedrockConfig {
     pub session_token: Option<String>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub prompt_cache: Option<bool>,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,

src/client/catalog.rs

@@ -572,7 +572,7 @@ pub(crate) fn name_overlap(old: &[String], new: &[String]) -> f64 {
     kept as f64 / old.len() as f64
 }
 
-fn overlay_hand_owned(hand: ModelData, api: ModelData) -> ModelData {
+pub(crate) fn overlay_hand_owned(hand: ModelData, api: ModelData) -> ModelData {
     ModelData {
         name: hand.name,
         model_type: hand.model_type,
@@ -604,6 +604,23 @@ fn overlay_hand_owned(hand: ModelData, api: ModelData) -> ModelData {
     }
 }
 
+pub(crate) fn extend_catalog_models(
+    catalog: &[ModelData],
+    overrides: &[ModelData],
+) -> Vec<ModelData> {
+    let mut models = catalog.to_vec();
+    for override_model in overrides {
+        match models.iter_mut().find(|model| {
+            model.name == override_model.name && model.model_type == override_model.model_type
+        }) {
+            Some(model) => *model = overlay_hand_owned(override_model.clone(), model.clone()),
+            None => models.push(override_model.clone()),
+        }
+    }
+
+    models
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(deny_unknown_fields)]
 pub struct ProviderQuirks {
@@ -1724,4 +1741,47 @@ rules:
             );
         }
     }
+
+    fn typed_model(name: &str, model_type: &str) -> ModelData {
+        ModelData {
+            name: name.to_string(),
+            model_type: model_type.to_string(),
+            ..Default::default()
+        }
+    }
+
+    #[test]
+    fn extend_catalog_models_merges_collisions_field_wise() {
+        let mut catalog_model = ModelData::new("m");
+        catalog_model.max_input_tokens = Some(100_000);
+        catalog_model.input_price = Some(1.0);
+        catalog_model.supports_vision = true;
+        let mut override_model = ModelData::new("m");
+        override_model.input_price = Some(9.0);
+
+        let merged = extend_catalog_models(&[catalog_model], &[override_model]);
+        assert_eq!(merged.len(), 1);
+        assert_eq!(merged[0].input_price, Some(9.0));
+        assert_eq!(merged[0].max_input_tokens, Some(100_000));
+        assert!(merged[0].supports_vision);
+    }
+
+    #[test]
+    fn extend_catalog_models_appends_net_new_after_catalog() {
+        let catalog = [ModelData::new("a"), ModelData::new("b")];
+        let merged = extend_catalog_models(&catalog, &[ModelData::new("c")]);
+        let names: Vec<&str> = merged.iter().map(|model| model.name.as_str()).collect();
+        assert_eq!(names, ["a", "b", "c"]);
+    }
+
+    #[test]
+    fn extend_catalog_models_collides_on_name_and_type() {
+        let mut catalog_model = typed_model("m", "embedding");
+        catalog_model.default_chunk_size = Some(1500);
+        let merged = extend_catalog_models(&[catalog_model], &[typed_model("m", "reranker")]);
+        assert_eq!(merged.len(), 2);
+        assert_eq!(merged[0].model_type, "embedding");
+        assert_eq!(merged[0].default_chunk_size, Some(1500));
+        assert_eq!(merged[1].model_type, "reranker");
+    }
 }

src/client/claude.rs

@@ -15,7 +15,7 @@ use serde_json::{Value, json};
 const API_BASE: &str = "https://api.anthropic.com/v1";
 const CLAUDE_CODE_PREFIX: &str = "You are Claude Code, Anthropic's official CLI for Claude.";
 
-#[derive(Debug, Clone, Deserialize)]
+#[derive(Debug, Clone, Deserialize, Default)]
 pub struct ClaudeConfig {
     pub name: Option<String>,
     pub api_key: Option<String>,
@@ -24,6 +24,8 @@ pub struct ClaudeConfig {
     pub oauth: Option<Box<OAuthConfig>>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub prompt_cache: Option<bool>,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,
@@ -1122,16 +1124,12 @@ mod tests {
     fn claude_config(name: &str, auth: Option<&str>, oauth: Option<OAuthConfig>) -> ClaudeConfig {
         ClaudeConfig {
             name: Some(name.into()),
-            api_key: None,
             api_base: oauth
                 .as_ref()
                 .map(|_| "https://gateway.example/v1".to_string()),
             auth: auth.map(str::to_string),
             oauth: oauth.map(Box::new),
-            models: vec![],
+            ..Default::default()
-            prompt_cache: None,
-            patch: None,
-            extra: None,
         }
     }
 

src/client/cohere.rs

@@ -16,6 +16,8 @@ pub struct CohereConfig {
     pub api_base: Option<String>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,
 }

src/client/common.rs

@@ -420,6 +420,15 @@ impl TokenUsage {
             && self.cache_read_input_tokens.is_none()
     }
 
+    /// Prompt-side tokens the API reported for one request: fresh input plus
+    /// cache writes and cache reads. The buckets are disjoint (see
+    /// [`Self::cost_usd`]), so the terms sum without adjustment.
+    pub fn total_prompt_tokens(&self) -> u64 {
+        self.input_tokens.unwrap_or(0)
+            + self.cache_creation_input_tokens.unwrap_or(0)
+            + self.cache_read_input_tokens.unwrap_or(0)
+    }
+
     pub fn accumulate(&mut self, other: &TokenUsage) {
         fn add(acc: &mut Option<u64>, value: Option<u64>) {
             if let Some(value) = value {

src/client/gemini.rs

@@ -20,6 +20,8 @@ pub struct GeminiConfig {
     pub oauth: Option<Box<OAuthConfig>>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,
 }

src/client/macros.rs

@@ -51,15 +51,24 @@ macro_rules! register_client {
 
                 pub fn list_models(local_config: &$config) -> Vec<Model> {
                     let client_name = Self::name(local_config);
+                    let find_catalog = || $crate::client::ALL_PROVIDER_MODELS.iter().find(|v| {
+                        v.provider == $name ||
+                            ($name == OpenAICompatibleClient::NAME
+                                && local_config.name.as_ref().map(|name| name.starts_with(&v.provider)).unwrap_or_default())
+                    });
                     if local_config.models.is_empty() {
-                        if let Some(v) = $crate::client::ALL_PROVIDER_MODELS.iter().find(|v| {
+                        match find_catalog() {
-                            v.provider == $name ||
+                            Some(v) => Model::from_config(client_name, &v.models),
-                                ($name == OpenAICompatibleClient::NAME
+                            None => vec![],
-                                    && local_config.name.as_ref().map(|name| name.starts_with(&v.provider)).unwrap_or_default())
+                        }
-                        }) {
+                    } else if local_config.extend_models {
-                            return Model::from_config(client_name, &v.models);
+                        match find_catalog() {
+                            Some(v) => Model::from_config(
+                                client_name,
+                                &$crate::client::catalog::extend_catalog_models(&v.models, &local_config.models),
+                            ),
+                            None => Model::from_config(client_name, &local_config.models),
                         }
-                        vec![]
                     } else {
                         Model::from_config(client_name, &local_config.models)
                     }

src/client/model.rs

@@ -557,4 +557,96 @@ reasoning_levels: [none, low, medium, high]
             "oauth blocks in the shipped models.yaml are limited to providers with no built-in stock oauth path (currently only xai's bundled defaults); adding one for claude/openai/gemini would silently swap stock oauth users onto a non-stock provider"
         );
     }
+
+    #[test]
+    fn config_models_replace_catalog_by_default() {
+        let ClientConfig::ClaudeConfig(config) = serde_yaml::from_str::<ClientConfig>(
+            "type: claude\nmodels:\n  - name: test-replace-model\n",
+        )
+        .unwrap() else {
+            panic!("expected a claude config");
+        };
+        assert!(!config.extend_models);
+
+        let models = crate::client::ClaudeClient::list_models(&config);
+        assert_eq!(models.len(), 1);
+        assert_eq!(models[0].name(), "test-replace-model");
+    }
+
+    #[test]
+    fn config_models_extend_catalog_when_flag_set() {
+        let ClientConfig::ClaudeConfig(config) = serde_yaml::from_str::<ClientConfig>(
+            "type: claude\nextend_models: true\nmodels:\n  - name: test-extra-model\n",
+        )
+        .unwrap() else {
+            panic!("expected a claude config");
+        };
+
+        let catalog_len = crate::client::ALL_PROVIDER_MODELS
+            .iter()
+            .find(|v| v.provider == "claude")
+            .map(|v| v.models.len())
+            .unwrap();
+        let models = crate::client::ClaudeClient::list_models(&config);
+        assert_eq!(models.len(), catalog_len + 1);
+        assert_eq!(models.last().unwrap().name(), "test-extra-model");
+    }
+
+    #[test]
+    fn extend_models_with_empty_models_returns_catalog_exactly() {
+        let ClientConfig::ClaudeConfig(config) =
+            serde_yaml::from_str::<ClientConfig>("type: claude\nextend_models: true\n").unwrap()
+        else {
+            panic!("expected a claude config");
+        };
+
+        let catalog = crate::client::ALL_PROVIDER_MODELS
+            .iter()
+            .find(|v| v.provider == "claude")
+            .unwrap();
+        let models = crate::client::ClaudeClient::list_models(&config);
+        assert_eq!(models.len(), catalog.models.len());
+        for (model, catalog_model) in models.iter().zip(catalog.models.iter()) {
+            assert_eq!(model.name(), catalog_model.name);
+        }
+    }
+
+    #[test]
+    fn extend_models_without_catalog_match_returns_config_models_only() {
+        let ClientConfig::OpenAICompatibleConfig(config) = serde_yaml::from_str::<ClientConfig>(
+            "type: openai-compatible\nname: no-such-provider-xyz\nextend_models: true\nmodels:\n  - name: test-only-model\n",
+        )
+        .unwrap() else {
+            panic!("expected an openai-compatible config");
+        };
+
+        assert!(
+            !crate::client::ALL_PROVIDER_MODELS
+                .iter()
+                .any(|v| "no-such-provider-xyz".starts_with(v.provider.as_str())),
+            "test premise: the client name must not prefix-match any catalog provider"
+        );
+        let models = crate::client::OpenAICompatibleClient::list_models(&config);
+        assert_eq!(models.len(), 1);
+        assert_eq!(models[0].name(), "test-only-model");
+    }
+
+    #[test]
+    fn extend_models_extends_catalog_via_provider_name_prefix_match() {
+        let ClientConfig::OpenAICompatibleConfig(config) = serde_yaml::from_str::<ClientConfig>(
+            "type: openai-compatible\nname: openrouter-custom\nextend_models: true\nmodels:\n  - name: test-net-new-model\n",
+        )
+        .unwrap() else {
+            panic!("expected an openai-compatible config");
+        };
+
+        let catalog_len = crate::client::ALL_PROVIDER_MODELS
+            .iter()
+            .find(|v| v.provider == "openrouter")
+            .map(|v| v.models.len())
+            .unwrap();
+        let models = crate::client::OpenAICompatibleClient::list_models(&config);
+        assert_eq!(models.len(), catalog_len + 1);
+        assert_eq!(models.last().unwrap().name(), "test-net-new-model");
+    }
 }

src/client/oauth.rs

@@ -1457,13 +1457,9 @@ echo_pkce_in_token_exchange: true
         ClientConfig::OpenAICompatibleConfig(OpenAICompatibleConfig {
             name: Some(name.into()),
             api_base: Some("https://api.example/v1".into()),
-            api_key: None,
             auth: auth.map(str::to_string),
             oauth: oauth.map(Box::new),
-            wire_api: None,
+            ..Default::default()
-            models: vec![],
-            patch: None,
-            extra: None,
         })
     }
 
@@ -1474,14 +1470,9 @@ echo_pkce_in_token_exchange: true
     ) -> ClientConfig {
         ClientConfig::ClaudeConfig(ClaudeConfig {
             name: Some(name.into()),
-            api_key: None,
-            api_base: None,
             auth: auth.map(str::to_string),
             oauth: oauth.map(Box::new),
-            models: vec![],
+            ..Default::default()
-            prompt_cache: None,
-            patch: None,
-            extra: None,
         })
     }
 
@@ -1492,15 +1483,9 @@ echo_pkce_in_token_exchange: true
     ) -> ClientConfig {
         ClientConfig::OpenAIConfig(OpenAIConfig {
             name: Some(name.into()),
-            api_key: None,
-            api_base: None,
-            organization_id: None,
             auth: auth.map(str::to_string),
             oauth: oauth.map(Box::new),
-            wire_api: None,
+            ..Default::default()
-            models: vec![],
-            patch: None,
-            extra: None,
         })
     }
 
@@ -1511,13 +1496,9 @@ echo_pkce_in_token_exchange: true
     ) -> ClientConfig {
         ClientConfig::GeminiConfig(GeminiConfig {
             name: Some(name.into()),
-            api_key: None,
-            api_base: None,
             auth: auth.map(str::to_string),
             oauth: oauth.map(Box::new),
-            models: vec![],
+            ..Default::default()
-            patch: None,
-            extra: None,
         })
     }
 

src/client/openai.rs

@@ -24,6 +24,8 @@ pub struct OpenAIConfig {
     pub wire_api: Option<WireApi>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,
 }
@@ -869,17 +871,22 @@ fn reasoning_thinking_block(item: &Value) -> Option<ThinkingBlock> {
 }
 
 /// OpenAI reports cached input under `input_tokens_details` and has no
-/// cache-creation concept, so that field stays `None`.
+/// cache-creation concept, so that field stays `None`. The reported
+/// `input_tokens` total already includes cached reads, so cached tokens are
+/// subtracted here to keep the buckets disjoint like other providers.
 fn openai_parse_responses_usage(usage: &Value) -> Option<TokenUsage> {
     if !usage.is_object() {
         return None;
     }
 
+    let cached_tokens = usage["input_tokens_details"]["cached_tokens"].as_u64();
     Some(TokenUsage {
-        input_tokens: usage["input_tokens"].as_u64(),
+        input_tokens: usage["input_tokens"]
+            .as_u64()
+            .map(|v| v.saturating_sub(cached_tokens.unwrap_or(0))),
         output_tokens: usage["output_tokens"].as_u64(),
         cache_creation_input_tokens: None,
-        cache_read_input_tokens: usage["input_tokens_details"]["cached_tokens"].as_u64(),
+        cache_read_input_tokens: cached_tokens,
     })
 }
 
@@ -1267,12 +1274,31 @@ mod tests {
         let output = openai_extract_responses(&data).unwrap();
 
         let usage = output.usage.unwrap();
-        assert_eq!(usage.input_tokens, Some(100));
+        assert_eq!(usage.input_tokens, Some(40));
         assert_eq!(usage.output_tokens, Some(20));
         assert_eq!(usage.cache_creation_input_tokens, None);
         assert_eq!(usage.cache_read_input_tokens, Some(60));
     }
 
+    #[test]
+    fn extract_responses_usage_without_cached_details_keeps_input_intact() {
+        let data = json!({
+            "output": [
+                { "type": "message", "content": [{ "type": "output_text", "text": "answer" }] },
+            ],
+            "usage": {
+                "input_tokens": 100,
+                "output_tokens": 20,
+            }
+        });
+
+        let output = openai_extract_responses(&data).unwrap();
+
+        let usage = output.usage.unwrap();
+        assert_eq!(usage.input_tokens, Some(100));
+        assert_eq!(usage.cache_read_input_tokens, None);
+    }
+
     #[test]
     fn extract_responses_without_usage_leaves_it_none() {
         let data = json!({
@@ -1357,7 +1383,7 @@ mod tests {
         assert!(done);
         let (_, _, _, usage) = handler.take();
         let usage = usage.unwrap();
-        assert_eq!(usage.input_tokens, Some(100));
+        assert_eq!(usage.input_tokens, Some(40));
         assert_eq!(usage.output_tokens, Some(20));
         assert_eq!(usage.cache_creation_input_tokens, None);
         assert_eq!(usage.cache_read_input_tokens, Some(60));
@@ -1467,7 +1493,7 @@ mod tests {
         let (text, _, _, usage) = handler.take();
         assert_eq!(text, "partial answer");
         let usage = usage.expect("usage should be recorded for truncated turns");
-        assert_eq!(usage.input_tokens, Some(50));
+        assert_eq!(usage.input_tokens, Some(25));
         assert_eq!(usage.output_tokens, Some(10));
         assert_eq!(usage.cache_read_input_tokens, Some(25));
     }

src/client/openai_compatible.rs

@@ -9,7 +9,7 @@ use serde::Deserialize;
 use serde_json::{Value, json};
 use oauth::OAuthConfig;
 
-#[derive(Debug, Clone, Deserialize)]
+#[derive(Debug, Clone, Deserialize, Default)]
 pub struct OpenAICompatibleConfig {
     pub name: Option<String>,
     pub api_base: Option<String>,
@@ -19,6 +19,8 @@ pub struct OpenAICompatibleConfig {
     pub wire_api: Option<WireApi>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,
 }
@@ -274,12 +276,8 @@ mod tests {
             name: Some("compat-test".into()),
             api_base: Some("https://compat.example/v1".into()),
             api_key: Some("sk-test".into()),
-            auth: None,
-            oauth: None,
             wire_api,
-            models: vec![],
+            ..Default::default()
-            patch: None,
-            extra: None,
         }
     }
 

src/client/vertexai.rs

@@ -18,6 +18,8 @@ pub struct VertexAIConfig {
     pub adc_file: Option<String>,
     #[serde(default)]
     pub models: Vec<ModelData>,
+    #[serde(default)]
+    pub extend_models: bool,
     pub prompt_cache: Option<bool>,
     pub patch: Option<RequestPatch>,
     pub extra: Option<ExtraConfig>,

src/config/app_config.rs

@@ -71,6 +71,7 @@ pub struct AppConfig {
     pub compression_threshold: usize,
     pub compression_keep_last: usize,
     pub compression_model: Option<String>,
+    pub compression_safety_valve: f32,
     pub summarization_prompt: Option<String>,
     pub summary_context_prompt: Option<String>,
     pub max_tool_result_chars: Option<usize>,
@@ -164,6 +165,7 @@ impl Default for AppConfig {
             compression_threshold: 4000,
             compression_keep_last: 0,
             compression_model: None,
+            compression_safety_valve: 0.8,
             summarization_prompt: None,
             summary_context_prompt: None,
             max_tool_result_chars: None,
@@ -270,6 +272,7 @@ impl AppConfig {
             compression_threshold: config.compression_threshold,
             compression_keep_last: config.compression_keep_last,
             compression_model: config.compression_model,
+            compression_safety_valve: config.compression_safety_valve,
             summarization_prompt: config.summarization_prompt,
             summary_context_prompt: config.summary_context_prompt,
             max_tool_result_chars: config.max_tool_result_chars,

src/config/input.rs

@@ -68,6 +68,34 @@ impl Input {
         })
     }
 
+    /// An input carrying only `text`: no session history, no RAG, and no
+    /// function declarations. For auxiliary LLM calls (such as session
+    /// summarization) whose requests must not grow with the session.
+    pub fn detached_text(ctx: &RequestContext, text: &str) -> Self {
+        let mut role = Role::new("", "");
+        role.set_model(ctx.current_model().clone());
+        Self {
+            app_config: Arc::clone(&ctx.app.config),
+            stream_enabled: ctx.app.config.stream,
+            session: None,
+            rag: None,
+            functions: None,
+            text: text.to_string(),
+            raw: (text.to_string(), vec![]),
+            patched_text: None,
+            last_reply: None,
+            continue_output: None,
+            regenerate: false,
+            medias: Default::default(),
+            data_urls: Default::default(),
+            tool_calls: None,
+            role,
+            rag_name: None,
+            with_session: false,
+            with_agent: false,
+        }
+    }
+
     pub async fn from_files(
         ctx: &RequestContext,
         raw_text: &str,
@@ -329,6 +357,14 @@ impl Input {
         }
     }
 
+    /// Re-captures `ctx.session` in place of the snapshot taken at
+    /// construction. Session compression mutates the ctx's session, not the
+    /// snapshot, so an input that outlives a compression must refresh before
+    /// building its next request or it re-sends the pre-compression history.
+    pub fn refresh_session(&mut self, ctx: &RequestContext) {
+        self.session = ctx.session.clone();
+    }
+
     pub fn session_mut<'a>(&self, session: &'a mut Option<Session>) -> Option<&'a mut Session> {
         if self.with_session {
             session.as_mut()
@@ -660,6 +696,60 @@ mod tests {
         assert!(!with_session);
     }
 
+    #[test]
+    fn detached_text_input_carries_no_session_history_or_functions() {
+        let mut ctx = create_test_ctx();
+        ctx.session = Some(Session::default());
+        let earlier = Input::from_str(&ctx, "earlier question", None).unwrap();
+        ctx.session
+            .as_mut()
+            .unwrap()
+            .add_message(&earlier, "earlier answer")
+            .unwrap();
+
+        let detached = Input::detached_text(&ctx, "summarize the above");
+        let messages = detached.build_messages().unwrap();
+        assert_eq!(messages.len(), 1, "must contain only the detached text");
+        assert!(messages[0].role.is_user());
+        assert_eq!(messages[0].content.to_text(), "summarize the above");
+        assert!(detached.declared_function_names().is_empty());
+        assert!(!detached.with_session());
+        assert!(!detached.with_agent());
+    }
+
+    #[test]
+    fn refresh_session_rebuilds_from_compressed_session() {
+        let mut ctx = create_test_ctx();
+        ctx.session = Some(Session::default());
+        for i in 0..4 {
+            let question =
+                Input::from_str(&ctx, &format!("question {i}: {}", "x".repeat(500)), None).unwrap();
+            ctx.session
+                .as_mut()
+                .unwrap()
+                .add_message(&question, &"y".repeat(500))
+                .unwrap();
+        }
+
+        let mut input = Input::from_str(&ctx, "retry me", None).unwrap();
+        let stale = serde_json::to_string(&input.build_messages().unwrap()).unwrap();
+
+        ctx.session.as_mut().unwrap().compress("recap".into(), 1);
+
+        assert_eq!(
+            serde_json::to_string(&input.build_messages().unwrap()).unwrap(),
+            stale,
+            "the snapshot captured at construction must be untouched by compression"
+        );
+
+        input.refresh_session(&ctx);
+        let refreshed = serde_json::to_string(&input.build_messages().unwrap()).unwrap();
+        assert!(
+            refreshed.len() < stale.len(),
+            "a refreshed input must build a strictly smaller request after compression"
+        );
+    }
+
     #[test]
     fn resolve_paths_detects_last_reply_syntax() {
         let loaders = HashMap::new();

src/config/mod.rs

@@ -58,7 +58,7 @@ pub use self::request_context::{
 pub use self::role::{
     CODE_ROLE, CREATE_TITLE_ROLE, EXPLAIN_SHELL_ROLE, Role, RoleLike, SHELL_ROLE,
 };
-pub use self::session::Session;
+pub use self::session::{Session, SessionScope, labeled_session_names, session_scope_dirs};
 #[allow(unused_imports)]
 pub use self::skill::Skill;
 #[allow(unused_imports)]
@@ -183,7 +183,7 @@ const MCP_FILE_NAME: &str = "mcp.json";
 const HIDDEN_MCP_FILE_NAME: &str = ".mcp.json";
 const MEMORY_DIR_NAME: &str = "memory";
 const MEMORY_INDEX_FILE_NAME: &str = "MEMORY.md";
-const WORKSPACE_COYOTE_DIR_NAME: &str = ".coyote";
+pub(crate) const WORKSPACE_COYOTE_DIR_NAME: &str = ".coyote";
 const SBX_KIT_DIR_NAME: &str = "sbx-kit";
 const SBX_KIT_HASH_FILE: &str = "kit.sha256";
 const SBX_MIXIN_FILE_NAME: &str = "sbx-mixin.yaml";
@@ -286,6 +286,7 @@ pub struct Config {
     pub compression_threshold: usize,
     pub compression_keep_last: usize,
     pub compression_model: Option<String>,
+    pub compression_safety_valve: f32,
     pub summarization_prompt: Option<String>,
     pub summary_context_prompt: Option<String>,
     pub max_tool_result_chars: Option<usize>,
@@ -376,6 +377,7 @@ impl Default for Config {
             compression_threshold: 4000,
             compression_keep_last: 0,
             compression_model: None,
+            compression_safety_valve: 0.8,
             summarization_prompt: None,
             summary_context_prompt: None,
             max_tool_result_chars: None,
@@ -581,10 +583,6 @@ pub fn default_sessions_dir() -> PathBuf {
     }
 }
 
-pub fn list_sessions() -> Vec<String> {
-    list_file_names(default_sessions_dir(), ".yaml")
-}
-
 /// Refreshes the models override. With a URL, mirrors a full models.yaml from
 /// it; without one, rebuilds the catalog from the live models.dev + OpenRouter
 /// APIs merged with the embedded quirks.
@@ -1379,6 +1377,7 @@ clients:
         assert!(cfg.mcp_server_support);
         assert_eq!(cfg.compression_threshold, 4000);
         assert!(cfg.compression_model.is_none());
+        assert_eq!(cfg.compression_safety_valve, 0.8);
         assert_eq!(cfg.rag_top_k, 5);
         assert!(cfg.save_shell_history);
         assert_eq!(cfg.keybindings, "emacs");
@@ -1419,6 +1418,7 @@ clients:
         assert!(cfg.mapping_tools.is_empty());
         assert!(cfg.document_loaders.is_empty());
         assert_eq!(cfg.compression_threshold, 4000);
+        assert_eq!(cfg.compression_safety_valve, 0.8);
         assert!(cfg.theme.is_none());
         assert_eq!(cfg.clients.len(), 1);
     }

src/config/paths.rs

@@ -5,7 +5,7 @@ use super::{
     GLOBAL_TOOLS_UTILS_DIR_NAME, HIDDEN_MCP_FILE_NAME, HOOKS_DIR_NAME, INSTALLED_BUNDLES_FILE_NAME,
     MACROS_DIR_NAME, MCP_FILE_NAME, MEMORY_DIR_NAME, MEMORY_INDEX_FILE_NAME, ModelsOverride,
     RAGS_DIR_NAME, ROLES_DIR_NAME, SBX_KIT_DIR_NAME, SBX_KIT_HASH_FILE, SBX_MIXIN_FILE_NAME,
-    SBX_MIXIN_KITS_DIR_NAME, SKILLS_DIR_NAME, WORKSPACE_COYOTE_DIR_NAME,
+    SBX_MIXIN_KITS_DIR_NAME, SESSIONS_DIR_NAME, SKILLS_DIR_NAME, WORKSPACE_COYOTE_DIR_NAME,
 };
 use crate::client::ProviderModels;
 use crate::config::REPL_HISTORY_DIR_NAME;
@@ -229,6 +229,17 @@ pub fn workspace_macros_dir() -> PathBuf {
     workspace_config_dir().join(MACROS_DIR_NAME)
 }
 
+pub fn workspace_sessions_dir() -> PathBuf {
+    workspace_config_dir().join(SESSIONS_DIR_NAME)
+}
+
+pub fn workspace_agent_sessions_dir(name: &str) -> PathBuf {
+    workspace_config_dir()
+        .join(AGENTS_DIR_NAME)
+        .join(name)
+        .join(SESSIONS_DIR_NAME)
+}
+
 pub fn workspace_mcp_config_file() -> Option<PathBuf> {
     workspace_mcp_config_file_in(&env::current_dir().unwrap_or_default())
 }
@@ -332,6 +343,10 @@ pub fn agent_data_dir(name: &str) -> PathBuf {
     }
 }
 
+pub fn agent_sessions_dir(name: &str) -> PathBuf {
+    agent_data_dir(name).join(SESSIONS_DIR_NAME)
+}
+
 pub fn agent_graph_file(agent_name: &str) -> PathBuf {
     agent_data_dir(agent_name).join(AGENT_GRAPH_FILE_NAME)
 }
@@ -854,6 +869,21 @@ mod tests {
                 );
             });
         }
+
+        #[test]
+        #[serial]
+        fn workspace_session_dirs_live_under_workspace_config_dir() {
+            with_workspace_dir(|_, ws_dir| {
+                assert_eq!(workspace_sessions_dir(), ws_dir.join(SESSIONS_DIR_NAME));
+                assert_eq!(
+                    workspace_agent_sessions_dir("helper"),
+                    ws_dir
+                        .join(AGENTS_DIR_NAME)
+                        .join("helper")
+                        .join(SESSIONS_DIR_NAME)
+                );
+            });
+        }
     }
 
     mod user_mcp_resolution {

src/config/session.rs

@@ -12,8 +12,10 @@ use inquire::{Confirm, Text, validator::Validation};
 use serde::{Deserialize, Serialize};
 use serde_json::json;
 use std::collections::HashMap;
-use std::fs::{read_to_string, write};
+use std::fmt;
-use std::path::Path;
+use std::fs::{OpenOptions, read_to_string, remove_file, rename};
+use std::io::{self, Write as _};
+use std::path::{Path, PathBuf};
 use std::sync::LazyLock;
 
 static RE_AUTONAME_PREFIX: LazyLock<Regex> = LazyLock::new(|| Regex::new(r"\d{8}T\d{6}-").unwrap());
@@ -29,6 +31,62 @@ fn cost_is_zero(v: &f64) -> bool {
     *v == 0.0
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub enum SessionScope {
+    #[default]
+    Global,
+    Workspace,
+}
+
+impl fmt::Display for SessionScope {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            SessionScope::Global => write!(f, "global"),
+            SessionScope::Workspace => write!(f, "workspace"),
+        }
+    }
+}
+
+pub fn session_scope_dirs(agent: Option<&str>) -> (PathBuf, PathBuf) {
+    match agent {
+        Some(agent) => (
+            paths::workspace_agent_sessions_dir(agent),
+            paths::agent_sessions_dir(agent),
+        ),
+        None => (paths::workspace_sessions_dir(), default_sessions_dir()),
+    }
+}
+
+/// Session names across both scope dirs, workspace first, deduped by name so
+/// a workspace session shadows a global one with the same name.
+pub fn labeled_session_names(
+    workspace_dir: &Path,
+    global_dir: &Path,
+) -> Vec<(String, SessionScope)> {
+    let mut values = Vec::new();
+    let mut seen = HashSet::new();
+    for (dir, scope) in [
+        (workspace_dir, SessionScope::Workspace),
+        (global_dir, SessionScope::Global),
+    ] {
+        for name in list_file_names(dir, ".yaml") {
+            if seen.insert(name.clone()) {
+                values.push((name, scope));
+            }
+        }
+    }
+    values
+}
+
+pub fn merged_session_names(workspace_dir: &Path, global_dir: &Path) -> Vec<String> {
+    let mut names: Vec<String> = labeled_session_names(workspace_dir, global_dir)
+        .into_iter()
+        .map(|(name, _)| name)
+        .collect();
+    names.sort_unstable();
+    names
+}
+
 #[derive(Debug, Clone, Default, Deserialize, Serialize)]
 pub struct Session {
     #[serde(rename(serialize = "model", deserialize = "model"))]
@@ -120,6 +178,8 @@ pub struct Session {
     #[serde(skip)]
     path: Option<String>,
     #[serde(skip)]
+    scope: SessionScope,
+    #[serde(skip)]
     dirty: bool,
     #[serde(skip)]
     save_session_this_time: bool,
@@ -173,6 +233,7 @@ impl Session {
         app: &AppConfig,
         name: &str,
         path: &Path,
+        scope: SessionScope,
     ) -> Result<Self> {
         let content = read_to_string(path)
             .with_context(|| format!("Failed to load session {} at {}", name, path.display()))?;
@@ -180,6 +241,7 @@ impl Session {
             serde_yaml::from_str(&content).with_context(|| format!("Invalid session {name}"))?;
 
         session.model = Model::retrieve_model(app, &session.model_id, ModelType::Chat)?;
+        session.scope = scope;
 
         if let Some(autoname) = name.strip_prefix("_/") {
             session.name = TEMP_SESSION_NAME.to_string();
@@ -250,6 +312,14 @@ impl Session {
         self.name = name;
     }
 
+    pub fn scope(&self) -> SessionScope {
+        self.scope
+    }
+
+    pub fn set_scope(&mut self, scope: SessionScope) {
+        self.scope = scope;
+    }
+
     pub fn clear_autoname(&mut self) {
         self.autoname = None;
     }
@@ -313,6 +383,7 @@ impl Session {
     pub fn export(&self) -> Result<String> {
         let mut data = json!({
             "path": self.path,
+            "scope": self.scope.to_string(),
             "model": self.model().id(),
         });
         if let Some(temperature) = self.temperature() {
@@ -403,6 +474,7 @@ impl Session {
         if let Some(path) = &self.path {
             items.push(("path", path.to_string()));
         }
+        items.push(("scope", self.scope.to_string()));
 
         if let Some(autoname) = self.autoname() {
             items.push(("autoname", autoname.to_string()));
@@ -719,17 +791,50 @@ impl Session {
         self.reclaimable_tokens(keep_last) >= (threshold / COMPRESSION_MIN_RECLAIM_DIVISOR).max(1)
     }
 
-    /// Estimated tokens of the messages that compression would actually fold
+    /// Whether the prompt is close enough to the model's hard input limit
-    /// away: everything except the leading system message (whose content is
+    /// that compression must run regardless of how `compression_threshold`
-    /// carried into the summary message) and the `keep_last` tail (kept verbatim).
+    /// is configured. Sizes the prompt as the larger of the API-reported
-    fn reclaimable_tokens(&self, keep_last: usize) -> usize {
+    /// measurement from the last request that reported usage and the local
+    /// estimate, because the estimate can run well below the provider's
+    /// real count.
+    pub fn safety_valve_triggered(
+        &self,
+        valve: f32,
+        keep_last: usize,
+        last_prompt_tokens: Option<usize>,
+    ) -> bool {
+        if self.compressing || !valve.is_finite() || valve <= 0.0 {
+            return false;
+        }
+        let Some(max_input_tokens) = self.model().max_input_tokens() else {
+            return false;
+        };
+        // With nothing to fold away, compressing is a no-op; firing anyway
+        // would spin compress attempts while a single in-flight turn holds
+        // all the tokens.
+        if self.reclaimable_tokens(keep_last) == 0 {
+            return false;
+        }
+        last_prompt_tokens.unwrap_or(0).max(self.tokens())
+            >= (valve * max_input_tokens as f32) as usize
+    }
+
+    /// The messages that compression would actually fold away: everything
+    /// except the leading system message (whose content is carried into the
+    /// summary message) and the `keep_last` tail (kept verbatim).
+    pub fn foldable_messages(&self, keep_last: usize) -> &[Message] {
         let start = usize::from(
             self.messages
                 .first()
                 .is_some_and(|v| v.role == MessageRole::System),
         );
         let end = self.messages.len().saturating_sub(keep_last).max(start);
-        self.model().total_tokens(&self.messages[start..end])
+        &self.messages[start..end]
+    }
+
+    /// Estimated tokens of the messages compression would fold away.
+    fn reclaimable_tokens(&self, keep_last: usize) -> usize {
+        self.model().total_tokens(self.foldable_messages(keep_last))
     }
 
     pub fn compressing(&self) -> bool {
@@ -853,17 +958,52 @@ impl Session {
     pub fn save(&mut self, session_name: &str, session_path: &Path, is_repl: bool) -> Result<()> {
         ensure_parent_exists(session_path)?;
 
-        self.path = Some(session_path.display().to_string());
-
         let content = serde_yaml::to_string(&self)
             .with_context(|| format!("Failed to serde session '{}'", self.name))?;
-        write(session_path, content).with_context(|| {
+        // Write through a sibling temp file and rename it over the target so a
+        // symlink planted at the session path is replaced, never followed. The
+        // temp file is opened with create_new so a symlink planted at the temp
+        // path is not followed either; a stale entry there is removed and the
+        // open retried once.
+        let mut tmp_name = session_path.as_os_str().to_os_string();
+        tmp_name.push(format!(".{}.tmp", process::id()));
+        let tmp_path = PathBuf::from(tmp_name);
+        let write_context = || {
             format!(
                 "Failed to write session '{}' to '{}'",
                 self.name,
                 session_path.display()
             )
-        })?;
+        };
+        let open_tmp = || {
+            OpenOptions::new()
+                .write(true)
+                .create_new(true)
+                .open(&tmp_path)
+        };
+        let mut tmp_file = match open_tmp() {
+            Ok(file) => file,
+            Err(error) if error.kind() == io::ErrorKind::AlreadyExists => {
+                remove_file(&tmp_path).with_context(write_context)?;
+                open_tmp().with_context(write_context)?
+            }
+            Err(error) => return Err(error).with_context(write_context),
+        };
+        if let Err(error) = tmp_file
+            .write_all(content.as_bytes())
+            .and_then(|_| tmp_file.flush())
+        {
+            drop(tmp_file);
+            let _ = remove_file(&tmp_path);
+            return Err(error).with_context(write_context);
+        }
+        drop(tmp_file);
+        if let Err(error) = rename(&tmp_path, session_path) {
+            let _ = remove_file(&tmp_path);
+            return Err(error).with_context(write_context);
+        }
+
+        self.path = Some(session_path.display().to_string());
 
         if is_repl {
             println!("✓ Saved the session to '{}'.", session_path.display());
@@ -1109,7 +1249,7 @@ impl AutoName {
 mod tests {
     use super::*;
     use crate::client::{
-        Message, MessageContent, MessageContentToolCalls, MessageRole, Model, TokenUsage,
+        Message, MessageContent, MessageContentToolCalls, MessageRole, Model, ModelData, TokenUsage,
     };
     use crate::config::{AppConfig, AppState, RequestContext, WorkingMode};
     use crate::function::{Functions, ToolCall, ToolResult};
@@ -1284,6 +1424,16 @@ mod tests {
         );
     }
 
+    #[test]
+    fn session_scope_is_not_serialized() {
+        let mut session = Session::default();
+        session.set_scope(SessionScope::Workspace);
+
+        let yaml = serde_yaml::to_string(&session).unwrap();
+
+        assert!(!yaml.contains("scope"));
+    }
+
     #[test]
     fn session_deserialization_ignores_injected_role_hooks() {
         // A session file is attacker-writable data: a `role_hooks:` key
@@ -1323,8 +1473,10 @@ mod tests {
     fn session_export_includes_real_usage_only_when_reported() {
         let empty = Session::default().export().unwrap();
         assert!(!empty.contains("real_input_tokens"));
+        assert!(empty.contains("scope: global"));
 
         let mut session = Session::default();
+        session.set_scope(SessionScope::Workspace);
         session.accumulate_token_usage(&TokenUsage {
             input_tokens: Some(5),
             output_tokens: Some(7),
@@ -1332,12 +1484,97 @@ mod tests {
             cache_read_input_tokens: Some(3),
         });
         let exported = session.export().unwrap();
+        assert!(exported.contains("scope: workspace"));
         assert!(exported.contains("real_input_tokens: 5"));
         assert!(exported.contains("real_output_tokens: 7"));
         assert!(exported.contains("cache_read_tokens: 3"));
         assert!(!exported.contains("cache_creation_tokens"));
     }
 
+    fn rendered_lines(session: &Session) -> Vec<String> {
+        let options = crate::render::RenderOptions {
+            raw_markdown: true,
+            ..Default::default()
+        };
+        let mut render = MarkdownRender::init(options).unwrap();
+        session
+            .render(&mut render, &None)
+            .unwrap()
+            .lines()
+            .map(str::to_string)
+            .collect()
+    }
+
+    #[test]
+    fn session_render_reports_scope_line() {
+        let mut session = Session::default();
+        assert!(
+            rendered_lines(&session)
+                .iter()
+                .any(|line| line.starts_with("scope") && line.ends_with("global"))
+        );
+
+        session.set_scope(SessionScope::Workspace);
+        assert!(
+            rendered_lines(&session)
+                .iter()
+                .any(|line| line.starts_with("scope") && line.ends_with("workspace"))
+        );
+    }
+
+    #[cfg(unix)]
+    #[test]
+    fn session_save_replaces_a_symlink_instead_of_following_it() {
+        let unique = std::time::SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap()
+            .as_nanos();
+        let dir = std::env::temp_dir().join(format!("coyote-session-save-symlink-{unique}"));
+        let sessions_dir = dir.join("sessions");
+        std::fs::create_dir_all(&sessions_dir).unwrap();
+        let target = dir.join("target.txt");
+        std::fs::write(&target, "untouched").unwrap();
+        let link = sessions_dir.join("link.yaml");
+        std::os::unix::fs::symlink(&target, &link).unwrap();
+
+        let mut session = Session::default();
+        session.save("link", &link, false).unwrap();
+
+        assert_eq!(read_to_string(&target).unwrap(), "untouched");
+        assert!(link.symlink_metadata().unwrap().is_file());
+        assert!(read_to_string(&link).unwrap().contains("model:"));
+        assert_eq!(session.name(), "link");
+        std::fs::remove_dir_all(&dir).unwrap();
+    }
+
+    #[cfg(unix)]
+    #[test]
+    fn session_save_does_not_follow_a_symlink_planted_at_the_temp_path() {
+        let unique = std::time::SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap()
+            .as_nanos();
+        let dir = std::env::temp_dir().join(format!("coyote-session-save-tmp-symlink-{unique}"));
+        let sessions_dir = dir.join("sessions");
+        std::fs::create_dir_all(&sessions_dir).unwrap();
+        let target = dir.join("target.txt");
+        std::fs::write(&target, "untouched").unwrap();
+        let destination = sessions_dir.join("notes.yaml");
+        let mut tmp_name = destination.as_os_str().to_os_string();
+        tmp_name.push(format!(".{}.tmp", process::id()));
+        let tmp_path = PathBuf::from(tmp_name);
+        std::os::unix::fs::symlink(&target, &tmp_path).unwrap();
+
+        let mut session = Session::default();
+        session.save("notes", &destination, false).unwrap();
+
+        assert_eq!(read_to_string(&target).unwrap(), "untouched");
+        assert!(destination.symlink_metadata().unwrap().is_file());
+        assert!(read_to_string(&destination).unwrap().contains("model:"));
+        assert!(!tmp_path.exists(), "temp file must not be left behind");
+        std::fs::remove_dir_all(&dir).unwrap();
+    }
+
     #[test]
     fn session_todo_state_survives_yaml_round_trip() {
         let mut session = Session::default();
@@ -1578,6 +1815,85 @@ mod tests {
         assert!(session.needs_compression(100, 1));
     }
 
+    /// A session with a system message, a large user message, and a small
+    /// assistant reply, on a model with the given input limit. With
+    /// `keep_last = 1` the user message is reclaimable; with `keep_last = 2`
+    /// nothing is.
+    fn valve_session(max_input_tokens: Option<usize>) -> Session {
+        let mut session = Session::default();
+        let mut data = ModelData::new("valve-model");
+        data.max_input_tokens = max_input_tokens;
+        session.set_model(Model::from_config("provider", &[data]).remove(0));
+        session.messages.push(Message::new(
+            MessageRole::System,
+            MessageContent::Text("x".repeat(400)),
+        ));
+        session.messages.push(Message::new(
+            MessageRole::User,
+            MessageContent::Text("y".repeat(4000)),
+        ));
+        session.messages.push(Message::new(
+            MessageRole::Assistant,
+            MessageContent::Text("ok".to_string()),
+        ));
+        session.update_tokens();
+        session
+    }
+
+    #[test]
+    fn session_safety_valve_fires_from_estimate() {
+        let session = valve_session(Some(1000));
+
+        assert!(session.tokens() >= 800);
+        assert!(session.safety_valve_triggered(0.8, 1, None));
+    }
+
+    #[test]
+    fn session_safety_valve_fires_from_real_usage_over_estimate() {
+        let session = valve_session(Some(1_000_000));
+
+        assert!(!session.safety_valve_triggered(0.8, 1, None));
+        assert!(!session.safety_valve_triggered(0.8, 1, Some(700_000)));
+        assert!(session.safety_valve_triggered(0.8, 1, Some(800_000)));
+    }
+
+    #[test]
+    fn session_safety_valve_disabled_when_zero() {
+        let session = valve_session(Some(1000));
+
+        assert!(!session.safety_valve_triggered(0.0, 1, Some(1_000_000)));
+    }
+
+    #[test]
+    fn session_safety_valve_disabled_when_nan() {
+        let session = valve_session(Some(1000));
+
+        assert!(!session.safety_valve_triggered(f32::NAN, 1, Some(1_000_000)));
+    }
+
+    #[test]
+    fn session_safety_valve_respects_compressing() {
+        let mut session = valve_session(Some(1000));
+        session.set_compressing(true);
+
+        assert!(!session.safety_valve_triggered(0.8, 1, Some(1_000_000)));
+    }
+
+    #[test]
+    fn session_safety_valve_requires_reclaimable_tokens() {
+        let session = valve_session(Some(1000));
+
+        assert!(!session.safety_valve_triggered(0.8, 2, Some(1_000_000)));
+        assert!(session.safety_valve_triggered(0.8, 1, Some(1_000_000)));
+    }
+
+    #[test]
+    fn session_safety_valve_requires_model_max_input_tokens() {
+        let session = valve_session(None);
+
+        assert!(!session.safety_valve_triggered(0.8, 1, Some(1_000_000)));
+    }
+
     #[test]
     fn session_set_compressing_flag() {
         let mut session = Session::default();

src/repl/mod.rs

@@ -13,7 +13,8 @@ use crate::client::{
 };
 use crate::config::{
     AgentVariables, AppConfig, AssertState, Input, LastMessage, MacroState, RequestContext,
-    StateFlags, flatten_prompt_messages, macro_execute, resolve_prompt_args, sanitize_display_text,
+    SessionScope, StateFlags, flatten_prompt_messages, macro_execute, resolve_prompt_args,
+    sanitize_display_text,
 };
 use crate::config::{AssetCategory, paths};
 use crate::function::agents::{GuardrailAction, check_pending_tasks_guardrail};
@@ -1088,11 +1089,24 @@ pub async fn run_repl_command(
                 Some(("role", name)) => {
                     ctx.save_role(name)?;
                 }
-                Some(("session", name)) => {
+                Some(("session", rest)) => match parse_repl_save_session(rest) {
-                    ctx.save_session(name)?;
+                    ReplSaveSessionDispatch::Run { name, scope } => {
-                }
+                        ctx.save_session(name.as_deref(), scope)?;
+                    }
+                    ReplSaveSessionDispatch::Help => println!("{}", repl_save_session_help()),
+                    ReplSaveSessionDispatch::Conflict => {
+                        println!("--workspace and --global are mutually exclusive")
+                    }
+                    ReplSaveSessionDispatch::Usage => {
+                        println!(
+                            "Usage: .save session [name] [--workspace|--global] (see `.save session --help`)"
+                        )
+                    }
+                },
                 _ => {
-                    println!(r#"Usage: .save <role|session> [name]"#)
+                    println!(
+                        r#"Usage: .save role [name] | .save session [name] [--workspace|--global]"#
+                    )
                 }
             },
             ".edit" => {
@@ -1515,6 +1529,8 @@ async fn ask_inner(
 ) -> Result<()> {
     let mut input = input;
     let mut with_embeddings = with_embeddings;
+    // One compress-and-retry per fresh input; tool-loop iterations share it.
+    let mut retried_after_compress = false;
     loop {
         if input.is_empty() {
             return Ok(());
@@ -1530,6 +1546,10 @@ async fn ask_inner(
 
         let app = Arc::clone(&ctx.app.config);
 
+        if maybe_auto_compress(ctx, app.as_ref()).await.succeeded {
+            input.refresh_session(ctx);
+        }
+
         if graph::active_agent_graph_name(ctx).is_some() {
             ctx.before_chat_completion(&input)?;
             let output =
@@ -1560,6 +1580,18 @@ async fn ask_inner(
             match result {
                 Ok(v) => v,
                 Err(err) => {
+                    if compress_for_error_retry(
+                        ctx,
+                        app.as_ref(),
+                        retried_after_compress,
+                        &abort_signal,
+                    )
+                    .await
+                    {
+                        input.refresh_session(ctx);
+                        retried_after_compress = true;
+                        continue;
+                    }
                     ctx.on_chat_completion_error(app.as_ref(), &input);
                     return Err(err);
                 }
@@ -1574,6 +1606,7 @@ async fn ask_inner(
         match check_pending_tasks_guardrail(ctx) {
             GuardrailAction::Inject(prompt) => {
                 input = Input::from_str(ctx, &prompt, None)?;
+                retried_after_compress = false;
                 continue;
             }
             GuardrailAction::ForceTerminate(ids) => {
@@ -1617,6 +1650,7 @@ async fn ask_inner(
                 format!("{prompt}\n\n{todo_state}")
             };
             input = Input::from_str(ctx, &full_prompt, None)?;
+            retried_after_compress = false;
             continue;
         }
 
@@ -1637,63 +1671,45 @@ async fn ask_inner(
             }
         }
 
-        let keep_last = ctx.compression_keep_last();
+        let agent_can_continue_after_compress =
-        let needs_compression = ctx
+            should_continue(ctx) && !abort_signal.aborted_ctrlc();
-            .session
-            .as_ref()
-            .is_some_and(|s| s.needs_compression(app.compression_threshold, keep_last));
 
-        if needs_compression {
+        // Auto-continue keys off the compression CONDITION, not the outcome:
-            let agent_can_continue_after_compress =
+        // a transiently failed compression retries at the next turn end, and
-                should_continue(ctx) && !abort_signal.aborted_ctrlc();
+        // gating on success would stall an unattended agent at the pause
+        // banner with incomplete todos.
+        let compression = maybe_auto_compress(ctx, app.as_ref()).await;
+        if compression.fired && agent_can_continue_after_compress {
+            let full_prompt = {
+                let config = ctx.auto_continue_config();
+                let todo_state = ctx.todo_list.render_for_model();
+                let remaining = ctx.todo_list.incomplete_count();
+                ctx.increment_auto_continue_count();
+                let count = ctx.auto_continue_count;
+                let max = config.max_continues;
 
-            if let Some(session) = ctx.session.as_mut() {
+                let prompt = config
-                session.set_compressing(true);
+                    .continuation_prompt
-            }
+                    .as_deref()
+                    .unwrap_or(DEFAULT_CONTINUATION_PROMPT);
 
-            let color = if app.light_theme() {
+                let color = if app.light_theme() {
-                nu_ansi_term::Color::LightGray
+                    nu_ansi_term::Color::LightGray
-            } else {
+                } else {
-                nu_ansi_term::Color::DarkGray
+                    nu_ansi_term::Color::DarkGray
-            };
-            eprintln!("\n📢 {}", color.italic().paint("Compressing the session."),);
-
-            auto_compress_session(ctx).await;
-            if let Some(session) = ctx.session.as_mut() {
-                session.set_compressing(false);
-            }
-
-            if agent_can_continue_after_compress {
-                let full_prompt = {
-                    let config = ctx.auto_continue_config();
-                    let todo_state = ctx.todo_list.render_for_model();
-                    let remaining = ctx.todo_list.incomplete_count();
-                    ctx.increment_auto_continue_count();
-                    let count = ctx.auto_continue_count;
-                    let max = config.max_continues;
-
-                    let prompt = config
-                        .continuation_prompt
-                        .as_deref()
-                        .unwrap_or(DEFAULT_CONTINUATION_PROMPT);
-
-                    let color = if app.light_theme() {
-                        nu_ansi_term::Color::LightGray
-                    } else {
-                        nu_ansi_term::Color::DarkGray
-                    };
-                    eprintln!(
-                        "\n📋 {}",
-                        color.italic().paint(format!(
-                            "Auto-continuing after compression ({count}/{max}): {remaining} incomplete todo(s) remain"
-                        ))
-                    );
-
-                    format!("{prompt}\n\n{todo_state}")
                 };
-                input = Input::from_str(ctx, &full_prompt, None)?;
+                eprintln!(
-                continue;
+                    "\n📋 {}",
-            }
+                    color.italic().paint(format!(
+                        "Auto-continuing after compression ({count}/{max}): {remaining} incomplete todo(s) remain"
+                    ))
+                );
+
+                format!("{prompt}\n\n{todo_state}")
+            };
+            input = Input::from_str(ctx, &full_prompt, None)?;
+            retried_after_compress = false;
+            continue;
         }
 
         print_turn_divider();
@@ -1709,15 +1725,87 @@ fn print_turn_divider() {
     println!();
 }
 
-async fn auto_compress_session(ctx: &mut RequestContext) {
+struct AutoCompressOutcome {
+    fired: bool,
+    succeeded: bool,
+}
+
+async fn maybe_auto_compress(ctx: &mut RequestContext, app: &AppConfig) -> AutoCompressOutcome {
+    let keep_last = ctx.compression_keep_last();
+    let should_compress = ctx.session.as_ref().is_some_and(|session| {
+        session.needs_compression(app.compression_threshold, keep_last)
+            || session.safety_valve_triggered(
+                app.compression_safety_valve,
+                keep_last,
+                ctx.last_prompt_token_usage,
+            )
+    });
+    if !should_compress {
+        return AutoCompressOutcome {
+            fired: false,
+            succeeded: false,
+        };
+    }
+
+    if let Some(session) = ctx.session.as_mut() {
+        session.set_compressing(true);
+    }
+
+    let color = if app.light_theme() {
+        nu_ansi_term::Color::LightGray
+    } else {
+        nu_ansi_term::Color::DarkGray
+    };
+    eprintln!("\n📢 {}", color.italic().paint("Compressing the session."),);
+
+    let compressed = auto_compress_session(ctx).await;
+    if let Some(session) = ctx.session.as_mut() {
+        session.set_compressing(false);
+    }
+    if compressed {
+        ctx.last_prompt_token_usage = None;
+    }
+    AutoCompressOutcome {
+        fired: true,
+        succeeded: compressed,
+    }
+}
+
+async fn compress_for_error_retry(
+    ctx: &mut RequestContext,
+    app: &AppConfig,
+    already_retried: bool,
+    abort_signal: &AbortSignal,
+) -> bool {
+    if already_retried || abort_signal.aborted() {
+        return false;
+    }
+    let keep_last = ctx.compression_keep_last();
+    let valve_triggered = ctx.session.as_ref().is_some_and(|session| {
+        session.safety_valve_triggered(
+            app.compression_safety_valve,
+            keep_last,
+            ctx.last_prompt_token_usage,
+        )
+    });
+    valve_triggered && maybe_auto_compress(ctx, app).await.succeeded
+}
+
+async fn auto_compress_session(ctx: &mut RequestContext) -> bool {
     match ctx.compress_session().await {
-        Ok(()) => hooks::fire(
+        Ok(()) => {
-            HookEvent::SessionCompressed,
+            hooks::fire(
-            ctx,
+                HookEvent::SessionCompressed,
-            &hooks::role_extras(ctx),
+                ctx,
-            None,
+                &hooks::role_extras(ctx),
-        ),
+                None,
-        Err(err) => warn!("Failed to compress the session: {err}"),
+            );
+            true
+        }
+        Err(err) => {
+            warn!("Failed to compress the session: {err}");
+            false
+        }
     }
 }
 
@@ -1860,6 +1948,61 @@ fn parse_repl_uninstall(args: Option<&str>) -> ReplUninstallDispatch {
     }
 }
 
+fn repl_save_session_help() -> String {
+    r#"Save the current session to a file.
+
+Usage:
+  .save session [name] [--workspace|--global]
+
+Flags:
+  --workspace   Save under .coyote/ in the current workspace
+  --global      Save under the global config dir
+
+Without a flag the session is re-saved wherever it currently lives; a brand-new
+session lives in the global scope. Re-homing a session never deletes the old file."#
+        .to_string()
+}
+
+#[derive(Debug, PartialEq)]
+enum ReplSaveSessionDispatch {
+    Run {
+        name: Option<String>,
+        scope: Option<SessionScope>,
+    },
+    Help,
+    Conflict,
+    Usage,
+}
+
+fn parse_repl_save_session(args: Option<&str>) -> ReplSaveSessionDispatch {
+    let tokens: Vec<&str> = args.unwrap_or("").split_whitespace().collect();
+    if tokens
+        .iter()
+        .any(|token| *token == "--help" || *token == "-h")
+    {
+        return ReplSaveSessionDispatch::Help;
+    }
+    let mut scope = None;
+    let mut names = Vec::new();
+    for token in tokens {
+        let requested = match token {
+            "--workspace" => SessionScope::Workspace,
+            "--global" => SessionScope::Global,
+            other if other.starts_with('-') => return ReplSaveSessionDispatch::Usage,
+            other => {
+                names.push(other);
+                continue;
+            }
+        };
+        if scope.is_some_and(|current| current != requested) {
+            return ReplSaveSessionDispatch::Conflict;
+        }
+        scope = Some(requested);
+    }
+    let name = (!names.is_empty()).then(|| names.join(" "));
+    ReplSaveSessionDispatch::Run { name, scope }
+}
+
 pub fn builtin_command_names() -> Vec<&'static str> {
     let mut names: Vec<&'static str> = REPL_COMMANDS
         .iter()
@@ -2036,10 +2179,12 @@ pub fn split_args_text(line: &str, is_win: bool) -> (Vec<String>, &str) {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::client::{ClientConfig, Model};
+    use crate::client::{ClientConfig, MessageContent, Model, ModelData, ToolCall};
     use crate::config::{AppState, Role, RoleLike, Session, TEMP_ROLE_NAME, WorkingMode};
+    use crate::function::ToolResult;
     use crate::hooks::{HookDef, HooksMap, test_sink};
     use anyhow::anyhow;
+    use serde_json::json;
     use serial_test::serial;
     use std::future::Future;
 
@@ -2357,6 +2502,13 @@ mod tests {
     /// resolvable, and the session already holds a user exchange so
     /// `compress_session` has something to summarize.
     fn compressible_ctx(marker: &str) -> RequestContext {
+        compressible_ctx_with(marker, AppConfig::default())
+    }
+
+    /// `compressible_ctx` with caller-tuned compression settings, so tests
+    /// can drive `needs_compression` and the safety valve; `dry_run` and the
+    /// default client are enforced here to keep compression offline.
+    fn compressible_ctx_with(marker: &str, config: AppConfig) -> RequestContext {
         let mut hooks_map = HooksMap::default();
         hooks_map.insert(
             "session.compressed".to_string(),
@@ -2370,7 +2522,7 @@ mod tests {
             hooks: hooks_map,
             dry_run: true,
             clients: vec![ClientConfig::default()],
-            ..Default::default()
+            ..config
         });
         let mut ctx = RequestContext::new(Arc::new(app), WorkingMode::Repl);
         let mut session = Session::default();
@@ -2382,6 +2534,7 @@ mod tests {
             .unwrap()
             .add_message(&input, "hi")
             .unwrap();
+        ctx.session.as_mut().unwrap().update_tokens();
         ctx
     }
 
@@ -2432,7 +2585,7 @@ mod tests {
         let marker = "auto-compress-ok-f8r";
         run_async(async {
             let mut ctx = compressible_ctx(marker);
-            auto_compress_session(&mut ctx).await;
+            assert!(auto_compress_session(&mut ctx).await);
         });
 
         assert_eq!(
@@ -2494,7 +2647,7 @@ mod tests {
             // An empty session makes compress_session fail; the seam must
             // swallow the error (no panic, no propagation) and fire nothing.
             ctx.session = Some(Session::default());
-            auto_compress_session(&mut ctx).await;
+            assert!(!auto_compress_session(&mut ctx).await);
         });
 
         assert_eq!(
@@ -2504,6 +2657,427 @@ mod tests {
         );
     }
 
+    #[test]
+    #[serial]
+    fn maybe_auto_compress_skips_when_neither_threshold_nor_valve_fires() {
+        let _sink = test_sink::install();
+        let marker = "maybe-compress-skip-q7m";
+        run_async(async {
+            let mut ctx = compressible_ctx_with(
+                marker,
+                AppConfig {
+                    compression_keep_last: 1,
+                    ..Default::default()
+                },
+            );
+            let app = Arc::clone(&ctx.app.config);
+
+            assert!(!maybe_auto_compress(&mut ctx, app.as_ref()).await.fired);
+        });
+
+        assert_eq!(session_compressed_count(marker), 0);
+    }
+
+    #[test]
+    #[serial]
+    fn maybe_auto_compress_fires_on_threshold_each_loop_iteration() {
+        // Exercises the shared seam the ask loop calls at the top of every
+        // iteration (tool-loop, guardrail-inject, and auto-continue turns
+        // included) as well as at turn end.
+        let _sink = test_sink::install();
+        let marker = "maybe-compress-threshold-n2x";
+        run_async(async {
+            let mut ctx = compressible_ctx_with(
+                marker,
+                AppConfig {
+                    compression_threshold: 1,
+                    compression_keep_last: 1,
+                    ..Default::default()
+                },
+            );
+            let app = Arc::clone(&ctx.app.config);
+
+            assert!(maybe_auto_compress(&mut ctx, app.as_ref()).await.succeeded);
+            assert!(
+                !ctx.is_compressing_session(),
+                "the compressing flag must be released after compression"
+            );
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    #[test]
+    #[serial]
+    fn maybe_auto_compress_reports_no_success_when_compression_fails() {
+        let _sink = test_sink::install();
+        let marker = "maybe-compress-fail-g4z";
+        run_async(async {
+            let mut ctx = compressible_ctx_with(
+                marker,
+                AppConfig {
+                    compression_threshold: 1,
+                    compression_keep_last: 0,
+                    ..Default::default()
+                },
+            );
+            // A session whose only reclaimable message is non-user: the
+            // threshold fires, but `compress_session` bails on a session
+            // without user messages.
+            {
+                let input = Input::from_str(&ctx, "more context", None).unwrap();
+                let session = ctx.session.as_mut().unwrap();
+                session.add_message(&input, &"y".repeat(400)).unwrap();
+                session.compress("recap".into(), 1);
+            }
+            let app = Arc::clone(&ctx.app.config);
+
+            let outcome = maybe_auto_compress(&mut ctx, app.as_ref()).await;
+            assert!(outcome.fired, "the compression condition must fire");
+            assert!(
+                !outcome.succeeded,
+                "a failed compression must not report success"
+            );
+            assert!(
+                !ctx.is_compressing_session(),
+                "the compressing flag must be released after a failed compression"
+            );
+        });
+
+        assert_eq!(session_compressed_count(marker), 0);
+    }
+
+    #[test]
+    #[serial]
+    fn failed_compression_still_reports_fired_with_kept_tail() {
+        // Pins the turn-end auto-continue gate: with keep_last > 0, a
+        // compression whose condition fired but whose summarization FAILED
+        // must still report `fired`, so an unattended agent auto-continues
+        // and retries the compression at the next turn end instead of
+        // stalling at the pause banner.
+        let _sink = test_sink::install();
+        let marker = "maybe-compress-fired-fail-t8r";
+        run_async(async {
+            let mut ctx = compressible_ctx_with(
+                marker,
+                AppConfig {
+                    compression_threshold: 1,
+                    compression_keep_last: 1,
+                    ..Default::default()
+                },
+            );
+            // A session whose foldable middle is a tool transcript and whose
+            // kept tail is an assistant reply: the threshold fires, but
+            // `compress_session` bails on a session without user messages.
+            {
+                let input = Input::from_str(&ctx, "more context", None)
+                    .unwrap()
+                    .merge_tool_results(
+                        "calling a tool to gather context".into(),
+                        vec![ToolResult::new(ToolCall::default(), json!("ok"))],
+                    );
+                let session = ctx.session.as_mut().unwrap();
+                session.add_message(&input, &"y".repeat(400)).unwrap();
+                session.compress("recap".into(), 2);
+            }
+            let app = Arc::clone(&ctx.app.config);
+
+            let outcome = maybe_auto_compress(&mut ctx, app.as_ref()).await;
+            assert!(outcome.fired, "the compression condition must fire");
+            assert!(
+                !outcome.succeeded,
+                "a failed compression must not report success"
+            );
+        });
+
+        assert_eq!(session_compressed_count(marker), 0);
+    }
+
+    #[test]
+    #[serial]
+    fn loop_top_compression_refresh_rebuilds_from_compressed_session() {
+        let _sink = test_sink::install();
+        let marker = "loop-top-refresh-h5w";
+        run_async(async {
+            let mut ctx = compressible_ctx_with(
+                marker,
+                AppConfig {
+                    compression_threshold: 1,
+                    compression_keep_last: 1,
+                    ..Default::default()
+                },
+            );
+            let app = Arc::clone(&ctx.app.config);
+            let mut input = Input::from_str(&ctx, "next turn", None).unwrap();
+            let stale = serde_json::to_string(&input.build_messages().unwrap()).unwrap();
+
+            assert!(maybe_auto_compress(&mut ctx, app.as_ref()).await.succeeded);
+            input.refresh_session(&ctx);
+
+            let refreshed = serde_json::to_string(&input.build_messages().unwrap()).unwrap();
+            assert_ne!(
+                refreshed, stale,
+                "the request built after a loop-top compression must reflect the compressed session"
+            );
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    #[test]
+    #[serial]
+    fn maybe_auto_compress_fires_on_safety_valve_despite_huge_threshold() {
+        let _sink = test_sink::install();
+        let marker = "maybe-compress-valve-v5c";
+        run_async(async {
+            let mut ctx = compressible_ctx_with(
+                marker,
+                AppConfig {
+                    compression_threshold: 1_000_000,
+                    compression_keep_last: 1,
+                    compression_safety_valve: 0.8,
+                    ..Default::default()
+                },
+            );
+            // A distinct name: `set_model` is a no-op for an unchanged model
+            // id, and the ctx's default session model declares no limit.
+            let mut data = ModelData::new("test-compress-model-limited");
+            data.max_input_tokens = Some(100_000);
+            let model = Model::from_config("openai", &[data]).remove(0);
+            ctx.session.as_mut().unwrap().set_model(model);
+            // The last successful request measured a prompt near the limit
+            // even though the local estimate is tiny.
+            ctx.last_prompt_token_usage = Some(90_000);
+            let app = Arc::clone(&ctx.app.config);
+
+            assert!(maybe_auto_compress(&mut ctx, app.as_ref()).await.succeeded);
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    /// A ctx where only the safety valve can trigger compression: the last
+    /// successful request measured a prompt near the session model's limit
+    /// while the threshold is out of reach.
+    fn valve_tripped_ctx(marker: &str) -> RequestContext {
+        let mut ctx = compressible_ctx_with(
+            marker,
+            AppConfig {
+                compression_threshold: 1_000_000,
+                compression_keep_last: 1,
+                compression_safety_valve: 0.8,
+                ..Default::default()
+            },
+        );
+        let mut data = ModelData::new("test-compress-model-limited");
+        data.max_input_tokens = Some(100_000);
+        let model = Model::from_config("openai", &[data]).remove(0);
+        ctx.session.as_mut().unwrap().set_model(model);
+        ctx.last_prompt_token_usage = Some(90_000);
+        ctx
+    }
+
+    #[test]
+    #[serial]
+    fn successful_compression_clears_stale_prompt_measurement() {
+        let _sink = test_sink::install();
+        let marker = "maybe-compress-stale-p6b";
+        run_async(async {
+            let mut ctx = valve_tripped_ctx(marker);
+            let app = Arc::clone(&ctx.app.config);
+
+            assert!(maybe_auto_compress(&mut ctx, app.as_ref()).await.succeeded);
+            assert_eq!(
+                ctx.last_prompt_token_usage, None,
+                "a successful compression must drop the pre-compression prompt measurement"
+            );
+
+            // A subsequent usage-less turn makes tokens reclaimable again;
+            // the valve must not re-fire from the vanished prompt's
+            // measurement.
+            {
+                let input = Input::from_str(&ctx, "next turn", None).unwrap();
+                let session = ctx.session.as_mut().unwrap();
+                session.add_message(&input, "reply").unwrap();
+            }
+            assert!(!maybe_auto_compress(&mut ctx, app.as_ref()).await.fired);
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    /// Counts `on_chat_completion_error` checkpoints in the session; the
+    /// literal must match `INTERRUPTED_RESPONSE_TEXT`, whose presence is
+    /// pinned by the give-up tests below.
+    fn interrupted_checkpoint_count(ctx: &RequestContext) -> usize {
+        ctx.session.as_ref().map_or(0, |session| {
+            session
+                .messages()
+                .iter()
+                .filter(|message| {
+                    matches!(&message.content, MessageContent::Text(text)
+                        if text.ends_with("[Response interrupted due to error]"))
+                })
+                .count()
+        })
+    }
+
+    #[test]
+    #[serial]
+    fn error_retry_compresses_once_without_checkpointing() {
+        let _sink = test_sink::install();
+        let marker = "error-retry-valve-k1s";
+        run_async(async {
+            let mut ctx = valve_tripped_ctx(marker);
+            let app = Arc::clone(&ctx.app.config);
+            let abort_signal = create_abort_signal();
+
+            assert!(compress_for_error_retry(&mut ctx, app.as_ref(), false, &abort_signal).await);
+            assert!(
+                !ctx.is_compressing_session(),
+                "the compressing flag must be released after compression"
+            );
+            assert_eq!(
+                interrupted_checkpoint_count(&ctx),
+                0,
+                "the retry path must not checkpoint the in-flight turn"
+            );
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    #[test]
+    #[serial]
+    fn error_retry_gives_up_on_second_failure_with_single_checkpoint() {
+        let _sink = test_sink::install();
+        let marker = "error-retry-giveup-p4t";
+        run_async(async {
+            let mut ctx = valve_tripped_ctx(marker);
+            let app = Arc::clone(&ctx.app.config);
+            let abort_signal = create_abort_signal();
+            let input = Input::from_str(&ctx, "still too big", None).unwrap();
+
+            assert!(compress_for_error_retry(&mut ctx, app.as_ref(), false, &abort_signal).await);
+            // The retried request failed too: no second compression, and the
+            // give-up path checkpoints the interrupted turn exactly once.
+            assert!(!compress_for_error_retry(&mut ctx, app.as_ref(), true, &abort_signal).await);
+            ctx.on_chat_completion_error(app.as_ref(), &input);
+            assert_eq!(interrupted_checkpoint_count(&ctx), 1);
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    #[test]
+    #[serial]
+    fn error_retry_declines_when_valve_is_quiet() {
+        let _sink = test_sink::install();
+        let marker = "error-retry-quiet-m8d";
+        run_async(async {
+            let mut ctx = compressible_ctx_with(
+                marker,
+                AppConfig {
+                    compression_keep_last: 1,
+                    ..Default::default()
+                },
+            );
+            let app = Arc::clone(&ctx.app.config);
+            let abort_signal = create_abort_signal();
+            let input = Input::from_str(&ctx, "transient failure", None).unwrap();
+
+            assert!(!compress_for_error_retry(&mut ctx, app.as_ref(), false, &abort_signal).await);
+            // Valve-false errors keep today's behavior: checkpoint and
+            // surface the error immediately, no compression, no retry.
+            ctx.on_chat_completion_error(app.as_ref(), &input);
+            assert_eq!(interrupted_checkpoint_count(&ctx), 1);
+        });
+
+        assert_eq!(session_compressed_count(marker), 0);
+    }
+
+    #[test]
+    #[serial]
+    fn error_retry_flag_blocks_repeat_and_rearms_on_fresh_input() {
+        let _sink = test_sink::install();
+        let marker = "error-retry-flag-c6y";
+        run_async(async {
+            let mut ctx = valve_tripped_ctx(marker);
+            let app = Arc::clone(&ctx.app.config);
+            let abort_signal = create_abort_signal();
+
+            // Tool-loop iterations carry the flag forward: a set flag wins
+            // over a still-firing valve.
+            assert!(!compress_for_error_retry(&mut ctx, app.as_ref(), true, &abort_signal).await);
+            assert_eq!(session_compressed_count(marker), 0);
+            // A fresh input rebuild clears the flag and re-arms the retry.
+            assert!(compress_for_error_retry(&mut ctx, app.as_ref(), false, &abort_signal).await);
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    #[test]
+    #[serial]
+    fn error_retry_refreshed_input_rebuilds_from_compressed_session() {
+        let _sink = test_sink::install();
+        let marker = "error-retry-refresh-j7q";
+        run_async(async {
+            let mut ctx = valve_tripped_ctx(marker);
+            let app = Arc::clone(&ctx.app.config);
+            let abort_signal = create_abort_signal();
+            let mut input = Input::from_str(&ctx, "still too big", None).unwrap();
+            let stale = serde_json::to_string(&input.build_messages().unwrap()).unwrap();
+
+            assert!(compress_for_error_retry(&mut ctx, app.as_ref(), false, &abort_signal).await);
+            // The snapshot captured at construction is untouched by the
+            // compression; retrying without a refresh would re-send the
+            // failed prompt byte for byte.
+            assert_eq!(
+                serde_json::to_string(&input.build_messages().unwrap()).unwrap(),
+                stale
+            );
+
+            input.refresh_session(&ctx);
+            let refreshed = serde_json::to_string(&input.build_messages().unwrap()).unwrap();
+            assert_ne!(refreshed, stale);
+            let rebuilt = Input::from_str(&ctx, "still too big", None).unwrap();
+            assert_eq!(
+                refreshed,
+                serde_json::to_string(&rebuilt.build_messages().unwrap()).unwrap(),
+                "a refreshed input must build the same request as one created after compression"
+            );
+        });
+
+        assert_eq!(session_compressed_count(marker), 1);
+    }
+
+    #[test]
+    #[serial]
+    fn error_retry_declines_when_user_aborted() {
+        let _sink = test_sink::install();
+        let marker = "error-retry-abort-b2n";
+        run_async(async {
+            let mut ctx = valve_tripped_ctx(marker);
+            let app = Arc::clone(&ctx.app.config);
+            let input = Input::from_str(&ctx, "killed mid-request", None).unwrap();
+
+            let ctrlc = create_abort_signal();
+            ctrlc.set_ctrlc();
+            assert!(!compress_for_error_retry(&mut ctx, app.as_ref(), false, &ctrlc).await);
+            let ctrld = create_abort_signal();
+            ctrld.set_ctrld();
+            assert!(!compress_for_error_retry(&mut ctx, app.as_ref(), false, &ctrld).await);
+
+            // A user-killed request keeps today's behavior: checkpoint and
+            // surface the error, no compression, no re-send.
+            ctx.on_chat_completion_error(app.as_ref(), &input);
+            assert_eq!(interrupted_checkpoint_count(&ctx), 1);
+        });
+
+        assert_eq!(session_compressed_count(marker), 0);
+    }
+
     #[test]
     fn test_process_command_line() {
         assert_eq!(parse_command(" ."), Some((".", None)));
@@ -2702,6 +3276,144 @@ mod tests {
         assert_eq!(parse_repl_uninstall(None), ReplUninstallDispatch::Usage);
     }
 
+    #[test]
+    fn parse_repl_save_session_routes_name_and_scope_in_either_order() {
+        assert_eq!(
+            parse_repl_save_session(None),
+            ReplSaveSessionDispatch::Run {
+                name: None,
+                scope: None
+            }
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("notes")),
+            ReplSaveSessionDispatch::Run {
+                name: Some("notes".to_string()),
+                scope: None
+            }
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("notes --workspace")),
+            ReplSaveSessionDispatch::Run {
+                name: Some("notes".to_string()),
+                scope: Some(SessionScope::Workspace)
+            }
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("--global notes")),
+            ReplSaveSessionDispatch::Run {
+                name: Some("notes".to_string()),
+                scope: Some(SessionScope::Global)
+            }
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("--workspace")),
+            ReplSaveSessionDispatch::Run {
+                name: None,
+                scope: Some(SessionScope::Workspace)
+            }
+        );
+    }
+
+    #[test]
+    fn parse_repl_save_session_rejects_conflicts_and_unknown_flags_but_joins_spaced_names() {
+        assert_eq!(
+            parse_repl_save_session(Some("--workspace --global")),
+            ReplSaveSessionDispatch::Conflict
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("notes --force")),
+            ReplSaveSessionDispatch::Usage
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("one two")),
+            ReplSaveSessionDispatch::Run {
+                name: Some("one two".to_string()),
+                scope: None
+            }
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("--help")),
+            ReplSaveSessionDispatch::Help
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("notes -h")),
+            ReplSaveSessionDispatch::Help
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("--workspace --global -h")),
+            ReplSaveSessionDispatch::Help
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("--global notes --global")),
+            ReplSaveSessionDispatch::Run {
+                name: Some("notes".to_string()),
+                scope: Some(SessionScope::Global)
+            }
+        );
+    }
+
+    #[test]
+    fn repl_save_session_help_text_covers_the_full_surface() {
+        let help = repl_save_session_help();
+        for needle in [
+            "--workspace",
+            "--global",
+            "[name]",
+            "never deletes the old file",
+        ] {
+            assert!(help.contains(needle), "save session help missing {needle}");
+        }
+    }
+
+    // Usage probe (spec-first, criterion 5): `-h/--help` wins from ANY
+    // position — including when it is preceded by a token that would
+    // otherwise route to Usage (unknown `-` flag) or Conflict (both scope
+    // flags) — while, absent help, an unknown `-` token still routes to
+    // Usage even when a valid scope flag is present, and a repeated
+    // identical flag stays idempotent for `--workspace` too.
+    #[test]
+    fn usage_probe_save_session_help_prescan_beats_usage_and_conflict() {
+        for input in [
+            "--bogus -h",
+            "-h --bogus",
+            "notes --bogus --help",
+            "--workspace --global notes -h",
+            "--help --workspace --global",
+            "one -h two",
+        ] {
+            assert_eq!(
+                parse_repl_save_session(Some(input)),
+                ReplSaveSessionDispatch::Help,
+                "help must win for {input:?}"
+            );
+        }
+
+        assert_eq!(
+            parse_repl_save_session(Some("--workspace --bogus notes")),
+            ReplSaveSessionDispatch::Usage
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("-x")),
+            ReplSaveSessionDispatch::Usage
+        );
+        assert_eq!(
+            parse_repl_save_session(Some("--workspace notes --workspace")),
+            ReplSaveSessionDispatch::Run {
+                name: Some("notes".to_string()),
+                scope: Some(SessionScope::Workspace)
+            }
+        );
+        // Non-flag tokens join into ONE name even when a flag sits between them.
+        assert_eq!(
+            parse_repl_save_session(Some("one --global two")),
+            ReplSaveSessionDispatch::Run {
+                name: Some("one two".to_string()),
+                scope: Some(SessionScope::Global)
+            }
+        );
+    }
+
     #[test]
     fn repl_install_and_uninstall_help_text_cover_the_full_surface() {
         let install = repl_install_help();

src/testing.rs

@@ -1,7 +1,10 @@
 //! Test-only helpers shared across modules' unit tests.
 
+use crate::config::WORKSPACE_COYOTE_DIR_NAME;
+use crate::utils;
 use log::{Level, LevelFilter, Log, Metadata, Record};
 use std::ffi::{OsStr, OsString};
+use std::path::PathBuf;
 use std::sync::{Mutex, Once, OnceLock};
 
 struct TestLogCollector;
@@ -147,12 +150,19 @@ impl Drop for EnvVarGuard {
     }
 }
 
-/// Points the config dir at a fresh temp directory for the guard's lifetime
+/// Points the config dir and the workspace config dir at fresh temp
-/// and removes it on drop, including on panic. Tests using it must serialize
+/// directories for the guard's lifetime and removes them on drop, including
-/// (`#[serial]`) — the config-dir env var is process-global.
+/// on panic, so the developer's real `./.coyote/` never leaks into a test.
+/// The sessions-dir override is cleared too, so Global-scope session writes
+/// land under the temp config dir rather than the developer's real one.
+/// Tests using it must serialize (`#[serial]`) — the env vars are
+/// process-global.
 pub(crate) struct TestConfigDirGuard {
     _env: EnvVarGuard,
-    pub(crate) path: std::path::PathBuf,
+    _workspace_env: EnvVarGuard,
+    _sessions_env: EnvVarGuard,
+    pub(crate) path: PathBuf,
+    workspace_path: PathBuf,
 }
 
 impl TestConfigDirGuard {
@@ -163,9 +173,19 @@ impl TestConfigDirGuard {
             .as_nanos();
         let path = std::env::temp_dir().join(format!("coyote-{label}-{unique}"));
         std::fs::create_dir_all(&path).unwrap();
+        let workspace_path = std::env::temp_dir()
+            .join(format!("coyote-{label}-ws-{unique}"))
+            .join(WORKSPACE_COYOTE_DIR_NAME);
+        std::fs::create_dir_all(&workspace_path).unwrap();
         Self {
-            _env: EnvVarGuard::set(crate::utils::get_env_name("config_dir"), &path),
+            _env: EnvVarGuard::set(utils::get_env_name("config_dir"), &path),
+            _workspace_env: EnvVarGuard::set(
+                utils::get_env_name("workspace_config_dir"),
+                &workspace_path,
+            ),
+            _sessions_env: EnvVarGuard::unset(utils::get_env_name("sessions_dir")),
             path,
+            workspace_path,
         }
     }
 }
@@ -173,5 +193,8 @@ impl TestConfigDirGuard {
 impl Drop for TestConfigDirGuard {
     fn drop(&mut self) {
         let _ = std::fs::remove_dir_all(&self.path);
+        if let Some(root) = self.workspace_path.parent() {
+            let _ = std::fs::remove_dir_all(root);
+        }
     }
 }

tests/inspection_flags.rs

@@ -15,11 +15,11 @@
 //! a real ~/.coyote_password or a sandbox shell — cannot mask
 //! virgin-environment regressions.
 
-use std::env;
 use std::fs;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
 use std::time::{SystemTime, UNIX_EPOCH};
+use std::{env, process};
 
 fn fresh_config_dir(label: &str) -> PathBuf {
     let unique = SystemTime::now()
@@ -438,3 +438,109 @@ fn sync_models_stays_on_bootstrap_path() {
         "--sync-models: expected the builtins bootstrap to populate the config dir"
     );
 }
+
+fn run_list_sessions(
+    cwd: &Path,
+    config_dir: &Path,
+    global_sessions: &Path,
+    home_dir: &Path,
+) -> process::Output {
+    Command::new(env!("CARGO_BIN_EXE_coyote"))
+        .arg("--list-sessions")
+        .env("COYOTE_CONFIG_DIR", config_dir)
+        .env("COYOTE_SESSIONS_DIR", global_sessions)
+        .env("HOME", home_dir)
+        .env("USERPROFILE", home_dir)
+        .env_remove("IS_SANDBOX")
+        .env_remove("COYOTE_PROVIDER")
+        .env_remove("COYOTE_PLATFORM")
+        .env_remove("COYOTE_WORKSPACE_CONFIG_DIR")
+        .current_dir(cwd)
+        .stdin(Stdio::null())
+        .output()
+        .unwrap()
+}
+
+fn seed_session(dir: &Path, name: &str) {
+    fs::create_dir_all(dir).unwrap();
+    fs::write(dir.join(format!("{name}.yaml")), "messages: []\n").unwrap();
+}
+
+#[test]
+fn usage_probe_list_sessions_merges_cwd_workspace_scope_with_global() {
+    let config_dir = fresh_config_dir("list-sessions-ws");
+    let home_dir = fresh_config_dir("list-sessions-ws-home");
+    let global_sessions = fresh_config_dir("list-sessions-ws-global");
+    let workspace = fresh_config_dir("list-sessions-ws-cwd");
+    let bare_cwd = fresh_config_dir("list-sessions-ws-bare");
+    let workspace_sessions = workspace.join(".coyote").join("sessions");
+
+    seed_session(&global_sessions, "both");
+    seed_session(&global_sessions, "glob-only");
+    seed_session(&workspace_sessions, "both");
+    seed_session(&workspace_sessions, "ws-only");
+
+    let in_workspace = run_list_sessions(&workspace, &config_dir, &global_sessions, &home_dir);
+    let in_bare = run_list_sessions(&bare_cwd, &config_dir, &global_sessions, &home_dir);
+
+    let config_leftover: Vec<_> = fs::read_dir(&config_dir)
+        .unwrap()
+        .map(|entry| entry.unwrap().file_name())
+        .collect();
+    let bare_created_workspace = bare_cwd.join(".coyote").exists();
+    let workspace_entries: Vec<_> = fs::read_dir(&workspace_sessions)
+        .unwrap()
+        .map(|entry| entry.unwrap().file_name().to_string_lossy().into_owned())
+        .collect();
+    for dir in [
+        &config_dir,
+        &home_dir,
+        &global_sessions,
+        &workspace,
+        &bare_cwd,
+    ] {
+        let _ = fs::remove_dir_all(dir);
+    }
+
+    for (label, output) in [("workspace", &in_workspace), ("bare", &in_bare)] {
+        assert!(
+            output.status.success(),
+            "--list-sessions ({label}): expected exit 0, got {:?}\nstdout: {}\nstderr: {}",
+            output.status,
+            String::from_utf8_lossy(&output.stdout),
+            String::from_utf8_lossy(&output.stderr)
+        );
+    }
+
+    let lines = |output: &process::Output| -> Vec<String> {
+        String::from_utf8_lossy(&output.stdout)
+            .lines()
+            .map(str::to_owned)
+            .collect()
+    };
+    assert_eq!(
+        lines(&in_workspace),
+        vec!["both", "glob-only", "ws-only"],
+        "workspace CWD: merged, deduplicated, sorted"
+    );
+    assert_eq!(
+        lines(&in_bare),
+        vec!["both", "glob-only"],
+        "CWD without .coyote/: behaviour unchanged (global listing only)"
+    );
+    assert!(
+        !bare_created_workspace,
+        "--list-sessions must never create .coyote/ in the CWD"
+    );
+    assert!(
+        config_leftover.is_empty(),
+        "--list-sessions must write nothing into the config dir: {config_leftover:?}"
+    );
+    let mut workspace_entries = workspace_entries;
+    workspace_entries.sort_unstable();
+    assert_eq!(
+        workspace_entries,
+        vec!["both.yaml", "ws-only.yaml"],
+        "listing is read-only for the workspace sessions dir"
+    );
+}