style: applied improved styling to the whole of the hooks integration

src/client/common.rs

@@ -547,10 +547,6 @@ pub async fn create_openai_compatible_client_config(
     Ok(Some((model, clients)))
 }
 
-/// Base extras every `llm.request.*` event carries. The three transport
-/// functions below are the single seam family for these events: they cover
-/// every provider and every caller, so the `Client` trait and per-provider
-/// code stay uninstrumented.
 fn llm_request_extras(client: &dyn Client) -> Vec<(&'static str, String)> {
     vec![
         ("COYOTE_LLM_PROVIDER", client.name().to_string()),
@@ -567,10 +563,6 @@ fn llm_completed_extras(client: &dyn Client, started_at: Instant) -> Vec<(&'stat
     extras
 }
 
-/// `aborted` marks a user interrupt; otherwise the error is `api_error` when
-/// it bottoms out in an [`ApiStatusError`] (which also yields
-/// `COYOTE_LLM_STATUS`), else `other`. Abort paths that produce no error
-/// object report `Aborted.`.
 fn llm_failed_extras(
     client: &dyn Client,
     err: Option<&anyhow::Error>,
@@ -592,6 +584,7 @@ fn llm_failed_extras(
         err.map(|err| format!("{err:#}"))
             .unwrap_or_else(|| "Aborted.".to_string()),
     ));
+
     extras
 }
 
@@ -1136,6 +1129,7 @@ mod tests {
 
     use super::super::access_token::{is_rejected, set_access_token};
     use crate::config::{AppState, WorkingMode};
+    use anyhow::Error;
     use std::sync::Arc;
     use std::sync::atomic::{AtomicUsize, Ordering};
     use tokio::time::Instant;
@@ -1352,8 +1346,8 @@ mod tests {
 
     /// Wrapped in `.context(...)` so every test below proves the downcast
     /// works through an anyhow context chain, as in the trait methods.
-    fn api_status_error(status: u16) -> anyhow::Error {
-        anyhow::Error::new(ApiStatusError {
+    fn api_status_error(status: u16) -> Error {
+        Error::new(ApiStatusError {
             status,
             message: format!("error (status: {status})"),
         })
@@ -1709,8 +1703,8 @@ mod tests {
             }
         }
 
-        fn error(&self) -> anyhow::Error {
-            anyhow::Error::new(ApiStatusError {
+        fn error(&self) -> Error {
+            Error::new(ApiStatusError {
                 status: self.status,
                 message: format!("error (status: {})", self.status),
             })
@@ -1757,7 +1751,7 @@ mod tests {
         }
     }
 
-    fn llm_hooks_map(marker: &str) -> crate::hooks::HooksMap {
+    fn llm_hooks_map(marker: &str) -> hooks::HooksMap {
         [
             "llm.request.started",
             "llm.request.completed",
@@ -1787,8 +1781,8 @@ mod tests {
         ctx
     }
 
-    fn llm_captures(marker: &str) -> Vec<crate::hooks::test_sink::Capture> {
-        crate::hooks::test_sink::snapshot()
+    fn llm_captures(marker: &str) -> Vec<hooks::test_sink::Capture> {
+        hooks::test_sink::snapshot()
             .into_iter()
             .filter(|capture| capture.hook_name == marker)
             .collect()
@@ -1802,7 +1796,7 @@ mod tests {
         let input = Input::from_str(&ctx, "hi", None).unwrap();
         let mut client = paced_client(false);
         client.nonstream_replies = true;
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         call_chat_completions(
             &input,
@@ -1838,7 +1832,7 @@ mod tests {
         let mut ctx = llm_hooked_ctx(marker);
         let input = Input::from_str(&ctx, "hi", None).unwrap();
         let client = FailingStatusClient::new(429);
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let err = call_chat_completions(
             &input,
@@ -1885,7 +1879,7 @@ mod tests {
         let mut ctx = llm_hooked_ctx(marker);
         let input = Input::from_str(&ctx, "hi", None).unwrap();
         let client = paced_client(false);
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         call_chat_completions_streaming(&input, &client, &mut ctx, create_abort_signal())
             .await
@@ -1911,7 +1905,7 @@ mod tests {
             tokio::time::sleep(PACED_GAP * PACED_DELTAS as u32 + Duration::from_secs(30)).await;
             trigger.set_ctrlc();
         });
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let err = call_chat_completions_streaming(&input, &client, &mut ctx, abort)
             .await
@@ -1936,7 +1930,7 @@ mod tests {
         let mut ctx = llm_hooked_ctx(marker);
         let input = Input::from_str(&ctx, "hi", None).unwrap();
         let client = paced_client(false);
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         call_chat_completions_streaming_quiet(&input, &client, &mut ctx, create_abort_signal())
             .await
@@ -1969,7 +1963,7 @@ mod tests {
             tokio::time::sleep(PACED_GAP * PACED_DELTAS as u32 + Duration::from_secs(30)).await;
             trigger.set_ctrlc();
         });
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let err = call_chat_completions_streaming_quiet(&input, &client, &mut ctx, abort)
             .await
@@ -1997,7 +1991,7 @@ mod tests {
         let mut ctx = llm_hooked_ctx(marker);
         let input = Input::from_str(&ctx, "hi", None).unwrap();
         let client = FailingStatusClient::new(500);
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let err =
             call_chat_completions_streaming_quiet(&input, &client, &mut ctx, create_abort_signal())

src/config/agent.rs

@@ -1489,7 +1489,7 @@ nodes:
     type: end
     output: done
 ";
-        let graph: graph::Graph = serde_yaml::from_str(yaml).unwrap();
+        let graph: Graph = serde_yaml::from_str(yaml).unwrap();
 
         let config = AgentConfig::from_graph("g", &graph);
 

src/config/app_config.rs

@@ -807,7 +807,7 @@ mod tests {
 
     #[test]
     fn from_config_copies_hooks() {
-        let mut hooks = crate::hooks::HooksMap::new();
+        let mut hooks = HooksMap::new();
         hooks.insert(
             "turn.completed".to_string(),
             vec![crate::hooks::HookDef {
@@ -845,7 +845,7 @@ mod tests {
         let env_name = get_env_name("hooks");
         let prev = env::var_os(&env_name);
 
-        let mut hooks = crate::hooks::HooksMap::new();
+        let mut hooks = HooksMap::new();
         hooks.insert(
             "turn.completed".to_string(),
             vec![crate::hooks::HookDef {

src/config/builtin_manifest.rs

@@ -15,16 +15,8 @@ use std::collections::BTreeSet;
 use std::fs;
 use std::path::Path;
 
-/// Hidden per-directory record of the files the builtin installer shipped
-/// there. Format: one plain filename per line (LF-separated, sorted); no
-/// path separators, and never the manifest itself. Written non-executable
-/// through the same atomic-write path as other installed files.
 pub(crate) const BUILTIN_MANIFEST_FILE: &str = ".builtin-manifest";
 
-/// True when `name` aliases the manifest file on some real-world filesystem:
-/// the comparison ignores trailing dots/spaces (Windows strips them at
-/// creation) and folds Unicode case (case-insensitive APFS/NTFS volumes fold
-/// beyond ASCII, e.g. U+017F ſ → s).
 pub(crate) fn is_builtin_manifest_name(name: &str) -> bool {
     name.trim_end_matches(['.', ' '])
         .to_uppercase()
@@ -36,8 +28,8 @@ pub(crate) fn is_builtin_manifest_name(name: &str) -> bool {
 /// absent from `shipped`. The manifest is then rewritten to the names this
 /// installer actually owns: files written this run (`written`), plus shipped
 /// names it already owned, plus stale files whose removal failed (kept so a
-/// later run retries). A shipped name the installer declined to write — a
-/// pre-existing user file with a colliding name — is never claimed.
+/// later run retries). A shipped name the installer declined to write (e.g., a
+/// pre-existing user file with a colliding name) is never claimed.
 ///
 /// Failure modes degrade toward keeping files: a missing or unreadable
 /// manifest yields no deletions, and entries that are not plain filenames
@@ -137,8 +129,9 @@ fn write_manifest(dir: &Path, names: &BTreeSet<String>) -> Result<()> {
 mod tests {
     use super::*;
     use crate::utils;
+    use std::path::PathBuf;
 
-    fn fresh_dir(label: &str) -> std::path::PathBuf {
+    fn fresh_dir(label: &str) -> PathBuf {
         let dir = utils::temp_file(label, "");
         fs::create_dir_all(&dir).unwrap();
         dir

src/config/install_remote.rs

@@ -2418,6 +2418,7 @@ fn print_secret_summary(added: &[String], deferred: &[String]) {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::config;
     use crate::config::builtin_manifest::BUILTIN_MANIFEST_FILE;
     use crate::sandbox::SANDBOX_ENV_FLAG;
     use crate::utils::get_env_name;
@@ -2710,8 +2711,6 @@ mod tests {
         assert!(out.functions_tools.is_none() && out.mcp_json.is_none());
     }
 
-    /// `--filter hooks` used to be an inert arm that always produced an empty
-    /// layout; it now selects the bundle's top-level hooks directory.
     #[test]
     fn apply_filter_hooks_keeps_only_hooks() {
         let l = RemoteLayout {
@@ -3624,8 +3623,9 @@ mod tests {
     fn assert_executable(path: &Path) {
         use std::os::unix::fs::PermissionsExt;
         let mode = fs::metadata(path).unwrap().permissions().mode();
-        assert!(
-            mode & 0o111 != 0,
+        assert_ne!(
+            mode & 0o111,
+            0,
             "{} must carry the executable bit",
             path.display()
         );
@@ -3932,7 +3932,7 @@ mod tests {
         }
         let _guard = TestVaultConfigGuard::new("prov-builtin");
 
-        crate::config::install_assets(crate::config::AssetCategory::Macros).unwrap();
+        config::install_assets(config::AssetCategory::Macros).unwrap();
 
         assert!(fs::read_dir(paths::macros_dir()).unwrap().next().is_some());
         assert!(!paths::installed_bundles_file().exists());
@@ -3957,7 +3957,7 @@ mod tests {
 
         // Capture outcomes before restoring the env var so a failed assertion
         // cannot leave the hooks-dir override pointing at a deleted temp dir.
-        let result = crate::config::install_assets(crate::config::AssetCategory::Hooks);
+        let result = config::install_assets(AssetCategory::Hooks);
         let installed = (
             hooks_dir.join("notify.sh").is_file(),
             hooks_dir.join("log-events.sh").is_file(),

src/config/mod.rs

@@ -83,6 +83,7 @@ use crate::utils::*;
 pub use macros::macro_execute;
 
 use crate::config::macros::Macro;
+use crate::hooks;
 use crate::vault::{
     GlobalVault, Vault, create_vault_password_file, interpolate_secrets, prompt_provider_choice,
 };
@@ -420,7 +421,7 @@ pub fn install_builtins() -> Result<()> {
     Agent::install_builtin_agents(false)?;
     Macro::install_macros(false)?;
     Skill::install_builtin_skills(false)?;
-    crate::hooks::install_builtin_hooks(false)?;
+    hooks::install_builtin_hooks(false)?;
     Role::install_builtin_role_hooks(false)?;
     Ok(())
 }
@@ -522,7 +523,7 @@ pub fn install_assets(category: AssetCategory) -> Result<()> {
         AssetCategory::Macros => Macro::install_macros(true)?,
         AssetCategory::Functions => Functions::install_builtin_global_tools(true)?,
         AssetCategory::Skills => Skill::install_builtin_skills(true)?,
-        AssetCategory::Hooks => crate::hooks::install_builtin_hooks(true)?,
+        AssetCategory::Hooks => hooks::install_builtin_hooks(true)?,
         AssetCategory::McpConfig => Functions::install_mcp_config()?,
     }
 

src/config/request_context.rs

@@ -4733,8 +4733,6 @@ impl RequestContext {
         }
         self.refresh_mcp_tool_filters();
         self.init_agent_session_variables(new_session)?;
-        // NEW sessions only, and only once the session is fully engaged on
-        // the context; resuming an existing session fires nothing.
         if created_new_session {
             hooks::fire(HookEvent::SessionStarted, self, &[], None);
         }
@@ -4933,24 +4931,18 @@ impl RequestContext {
         Ok(())
     }
 
-    /// Opens the top-level `agent.*` bracket: fires `agent.started` once per
-    /// agent-context lifetime when the ROOT context runs with a loaded agent
-    /// (headless `--agent` dispatch, or entering an agent interactively).
-    /// Spawned sub-agents are bracketed at their spawn seam instead, never
-    /// here. Synthesizes and stores `COYOTE_AGENT_ID` under the
-    /// `top-<agent-name>-<8-char alphanumeric nonce>` scheme; calling this
-    /// again while the bracket is open, or without an agent, is a no-op —
-    /// per-message granularity belongs to `turn.*`, not `agent.*`.
     pub fn top_level_agent_started(&mut self) {
         if self.top_level_agent_id.is_some() {
             return;
         }
+
         let Some(agent) = self.agent.as_ref() else {
             return;
         };
         let nonce = Alphanumeric.sample_string(&mut rand::rng(), 8);
         let id = format!("top-{}-{nonce}", agent.name());
         self.top_level_agent_id = Some(id.clone());
+
         hooks::fire(
             HookEvent::AgentStarted,
             self,
@@ -4959,15 +4951,11 @@ impl RequestContext {
         );
     }
 
-    /// Closes the top-level `agent.*` bracket: fires `agent.completed`, or
-    /// `agent.failed` carrying `COYOTE_AGENT_ERROR` when the run ended in an
-    /// error. No-op unless [`Self::top_level_agent_started`] opened the
-    /// bracket; the stored id is consumed so exactly one terminal event
-    /// fires per lifetime.
     pub fn top_level_agent_finished(&mut self, error: Option<&Error>) {
         let Some(id) = self.top_level_agent_id.take() else {
             return;
         };
+
         match error {
             None => hooks::fire(
                 HookEvent::AgentCompleted,

src/config/role.rs

@@ -1039,9 +1039,9 @@ Input 1
             .collect()
     }
 
-    fn hooks_fixture_dir(label: &str) -> std::path::PathBuf {
-        let dir = crate::utils::temp_file(label, "");
-        std::fs::create_dir_all(&dir).unwrap();
+    fn hooks_fixture_dir(label: &str) -> PathBuf {
+        let dir = temp_file(label, "");
+        create_dir_all(&dir).unwrap();
         dir.join("hooks")
     }
 
@@ -1052,24 +1052,17 @@ Input 1
         install_and_reconcile_role_hooks(&dir, &fixture(&[("a.sh", "#!/bin/sh\n")]), false)
             .unwrap();
 
+        assert_eq!(read_to_string(dir.join("a.sh")).unwrap(), "#!/bin/sh\n");
         assert_eq!(
-            std::fs::read_to_string(dir.join("a.sh")).unwrap(),
-            "#!/bin/sh\n"
-        );
-        assert_eq!(
-            std::fs::read_to_string(dir.join(builtin_manifest::BUILTIN_MANIFEST_FILE)).unwrap(),
+            read_to_string(dir.join(builtin_manifest::BUILTIN_MANIFEST_FILE)).unwrap(),
             "a.sh\n"
         );
         #[cfg(unix)]
         {
             use std::os::unix::fs::PermissionsExt;
-            let mode = std::fs::metadata(dir.join("a.sh"))
-                .unwrap()
-                .permissions()
-                .mode();
+            let mode = fs::metadata(dir.join("a.sh")).unwrap().permissions().mode();
             assert_eq!(mode & 0o777, 0o755, "role hook scripts install executable");
-            let manifest_mode =
-                std::fs::metadata(dir.join(builtin_manifest::BUILTIN_MANIFEST_FILE))
+            let manifest_mode = fs::metadata(dir.join(builtin_manifest::BUILTIN_MANIFEST_FILE))
                 .unwrap()
                 .permissions()
                 .mode();
@@ -1079,28 +1072,22 @@ Input 1
                 "the manifest must never be executable"
             );
         }
-        let _ = std::fs::remove_dir_all(dir.parent().unwrap());
+        let _ = fs::remove_dir_all(dir.parent().unwrap());
     }
 
     #[test]
     fn role_hooks_install_overwrites_only_with_force() {
         let dir = hooks_fixture_dir("role-hooks-force-");
         let shipped = fixture(&[("a.sh", "new content\n")]);
-        std::fs::create_dir_all(&dir).unwrap();
-        std::fs::write(dir.join("a.sh"), "SENTINEL").unwrap();
+        create_dir_all(&dir).unwrap();
+        fs::write(dir.join("a.sh"), "SENTINEL").unwrap();
 
         install_and_reconcile_role_hooks(&dir, &shipped, false).unwrap();
-        assert_eq!(
-            std::fs::read_to_string(dir.join("a.sh")).unwrap(),
-            "SENTINEL"
-        );
+        assert_eq!(read_to_string(dir.join("a.sh")).unwrap(), "SENTINEL");
 
         install_and_reconcile_role_hooks(&dir, &shipped, true).unwrap();
-        assert_eq!(
-            std::fs::read_to_string(dir.join("a.sh")).unwrap(),
-            "new content\n"
-        );
-        let _ = std::fs::remove_dir_all(dir.parent().unwrap());
+        assert_eq!(read_to_string(dir.join("a.sh")).unwrap(), "new content\n");
+        let _ = fs::remove_dir_all(dir.parent().unwrap());
     }
 
     #[test]
@@ -1113,7 +1100,7 @@ Input 1
             false,
         )
         .unwrap();
-        std::fs::write(dir.join("user.sh"), "user-owned").unwrap();
+        fs::write(dir.join("user.sh"), "user-owned").unwrap();
 
         install_and_reconcile_role_hooks(&dir, &fixture(&[("keep.sh", "#!/bin/sh\n")]), false)
             .unwrap();
@@ -1125,17 +1112,17 @@ Input 1
         assert!(dir.join("keep.sh").exists());
         assert!(dir.join("user.sh").exists(), "user file survives reconcile");
         assert_eq!(
-            std::fs::read_to_string(dir.join(builtin_manifest::BUILTIN_MANIFEST_FILE)).unwrap(),
+            read_to_string(dir.join(builtin_manifest::BUILTIN_MANIFEST_FILE)).unwrap(),
             "keep.sh\n"
         );
-        let _ = std::fs::remove_dir_all(dir.parent().unwrap());
+        let _ = fs::remove_dir_all(dir.parent().unwrap());
     }
 
     #[test]
     fn role_hooks_never_claim_a_preexisting_user_file() {
         let dir = hooks_fixture_dir("role-hooks-unclaimed-");
-        std::fs::create_dir_all(&dir).unwrap();
-        std::fs::write(dir.join("a.sh"), "user-owned").unwrap();
+        create_dir_all(&dir).unwrap();
+        fs::write(dir.join("a.sh"), "user-owned").unwrap();
 
         install_and_reconcile_role_hooks(&dir, &fixture(&[("a.sh", "#!/bin/sh\n")]), false)
             .unwrap();
@@ -1146,11 +1133,11 @@ Input 1
 
         install_and_reconcile_role_hooks(&dir, &[], false).unwrap();
         assert_eq!(
-            std::fs::read_to_string(dir.join("a.sh")).unwrap(),
+            read_to_string(dir.join("a.sh")).unwrap(),
             "user-owned",
             "the user file survives the hook being dropped from the embed"
         );
-        let _ = std::fs::remove_dir_all(dir.parent().unwrap());
+        let _ = fs::remove_dir_all(dir.parent().unwrap());
     }
 
     #[test]
@@ -1160,6 +1147,6 @@ Input 1
         install_and_reconcile_role_hooks(&dir, &[], false).unwrap();
 
         assert!(!dir.exists(), "an empty shipped set must not create hooks/");
-        let _ = std::fs::remove_dir_all(dir.parent().unwrap());
+        let _ = fs::remove_dir_all(dir.parent().unwrap());
     }
 }

src/config/session.rs

@@ -1288,7 +1288,7 @@ mod tests {
     fn session_deserialization_ignores_injected_role_hooks() {
         // A session file is attacker-writable data: a `role_hooks:` key
         // crafted into it must never deserialize into executable hook
-        // config — hooks are only ever re-read from the role file itself.
+        // config. Hooks are only ever re-read from the role file itself.
         let yaml = "model: ''\nmessages: []\nrole_hooks:\n  session.started:\n    - name: injected\n      command: touch /tmp/pwned\n";
         let session: Session = serde_yaml::from_str(yaml).unwrap();
         assert!(

src/function/jobs.rs

@@ -54,10 +54,6 @@ pub fn is_agent_task(supervisor: Option<&Arc<RwLock<Supervisor>>>, id: &str) ->
         || supervisor.is_some_and(|sup| sup.read().has_agent(id))
 }
 
-/// Terminal-event hooks for one job, resolved on the caller's context before
-/// the task is spawned (`build_env_snapshot` precedent) so the detached
-/// closure owns everything it fires with. Session and agent names are
-/// snapshotted because the context is gone by fire time.
 struct JobHookSnapshot {
     completed: Vec<ResolvedHook>,
     failed: Vec<ResolvedHook>,
@@ -92,9 +88,11 @@ impl JobHookSnapshot {
         } else {
             (HookEvent::JobFailed, self.failed)
         };
+
         if resolved.is_empty() {
             return;
         }
+
         let base_envs = hooks::base_envs_parts(
             event,
             self.session_name.as_deref(),
@@ -104,9 +102,11 @@ impl JobHookSnapshot {
             ("COYOTE_JOB_ID", self.job_id),
             ("COYOTE_TOOL_NAME", self.tool),
         ];
+
         if let Some(error) = error {
             extras.push(("COYOTE_JOB_ERROR", error));
         }
+
         hooks::fire_resolved(event, resolved, base_envs, &extras, None);
     }
 }
@@ -3208,13 +3208,13 @@ mod tests {
         assert!(ctx.supervisor.is_none(), "no job may be spawned");
     }
 
-    fn job_hooks_map(marker: &str) -> crate::hooks::HooksMap {
+    fn job_hooks_map(marker: &str) -> hooks::HooksMap {
         ["job.started", "job.completed", "job.failed"]
             .into_iter()
             .map(|event| {
                 (
                     event.to_string(),
-                    vec![crate::hooks::HookDef {
+                    vec![hooks::HookDef {
                         name: marker.to_string(),
                         command: "true".to_string(),
                     }],
@@ -3230,8 +3230,8 @@ mod tests {
         RequestContext::new(app, WorkingMode::Cmd)
     }
 
-    fn job_captures(marker: &str) -> Vec<crate::hooks::test_sink::Capture> {
-        crate::hooks::test_sink::snapshot()
+    fn job_captures(marker: &str) -> Vec<hooks::test_sink::Capture> {
+        hooks::test_sink::snapshot()
             .into_iter()
             .filter(|capture| capture.hook_name == marker)
             .collect()
@@ -3245,7 +3245,7 @@ mod tests {
             let marker = "job-hooks-ok-x7x";
             let mut ctx = job_hooked_ctx(marker);
             ctx.declared_function_names.insert("echo".into());
-            let _guard = crate::hooks::test_sink::install();
+            let _guard = hooks::test_sink::install();
 
             let started = handle_start(&mut ctx, &json!({"tool": "echo", "arguments": {}}))
                 .await
@@ -3300,7 +3300,7 @@ mod tests {
             let marker = "job-hooks-fail-x7x";
             let mut ctx = job_hooked_ctx(marker);
             ctx.declared_function_names.insert("false".into());
-            let _guard = crate::hooks::test_sink::install();
+            let _guard = hooks::test_sink::install();
 
             let started = handle_start(&mut ctx, &json!({"tool": "false", "arguments": {}}))
                 .await
@@ -3344,7 +3344,7 @@ mod tests {
             filter.push_layer(LayerSource::Global, &[]);
             runtime.tool_filters.insert("fixture".to_string(), filter);
             ctx.tool_scope.mcp_runtime = runtime;
-            let _guard = crate::hooks::test_sink::install();
+            let _guard = hooks::test_sink::install();
 
             let started = handle_start(
                 &mut ctx,
@@ -3382,7 +3382,7 @@ mod tests {
     fn rejected_job_start_fires_no_hooks() {
         let marker = "job-hooks-rejected-x7x";
         let mut ctx = job_hooked_ctx(marker);
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let result = run_async(handle_start(
             &mut ctx,

src/function/mod.rs

@@ -1539,12 +1539,6 @@ impl ToolCall {
         Ok(result)
     }
 
-    /// Evaluates the call, firing `tool.*` hooks around it: `tool.started`
-    /// once the name and arguments are resolved, then exactly one of
-    /// `tool.completed` / `tool.failed`. A failure before resolution
-    /// (unknown tool, malformed arguments) fires `tool.failed` alone. Hooks
-    /// are pure observers — the returned value is exactly what the tool
-    /// produced.
     pub async fn eval(&self, ctx: &mut RequestContext) -> Result<Value> {
         let result = self.eval_inner(ctx).await;
         if let Err(err) = &result {
@@ -5308,13 +5302,13 @@ mod tests {
         }
     }
 
-    fn tool_hooks_map(marker: &str) -> crate::hooks::HooksMap {
+    fn tool_hooks_map(marker: &str) -> hooks::HooksMap {
         ["tool.started", "tool.completed", "tool.failed"]
             .into_iter()
             .map(|event| {
                 (
                     event.to_string(),
-                    vec![crate::hooks::HookDef {
+                    vec![hooks::HookDef {
                         name: marker.to_string(),
                         command: "true".to_string(),
                     }],
@@ -5334,8 +5328,8 @@ mod tests {
         RequestContext::new(Arc::new(app), WorkingMode::Cmd)
     }
 
-    fn tool_captures(marker: &str) -> Vec<crate::hooks::test_sink::Capture> {
-        crate::hooks::test_sink::snapshot()
+    fn tool_captures(marker: &str) -> Vec<hooks::test_sink::Capture> {
+        hooks::test_sink::snapshot()
             .into_iter()
             .filter(|capture| capture.hook_name == marker)
             .collect()
@@ -5351,7 +5345,7 @@ mod tests {
             config.auto_continue = true;
         });
         ctx.tool_scope.functions.append_todo_functions();
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let output =
             run_async(call_with_args("todo__init", json!({"goal": "g"})).eval(&mut ctx)).unwrap();
@@ -5389,7 +5383,7 @@ mod tests {
             ctx.tool_scope
                 .functions
                 .append_mcp_meta_functions(vec![tools_only("fixture")]);
-            let _guard = crate::hooks::test_sink::install();
+            let _guard = hooks::test_sink::install();
 
             let output = call_with_args("mcp_invoke_fixture", json!({"tool": "dup"}))
                 .eval(&mut ctx)
@@ -5424,7 +5418,7 @@ mod tests {
                 parameters: JsonSchema::default(),
                 agent: false,
             });
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let output = run_async(call_with_args("echo", json!({"x": 1})).eval(&mut ctx)).unwrap();
 
@@ -5454,7 +5448,7 @@ mod tests {
                 parameters: JsonSchema::default(),
                 agent: false,
             });
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let output = run_async(call_with_args("false", json!({})).eval(&mut ctx)).unwrap();
 
@@ -5485,7 +5479,7 @@ mod tests {
         let mut plain = RequestContext::new(Arc::new(AppState::test_default()), WorkingMode::Cmd);
         plain.tool_scope.functions.append_todo_functions();
         let call = call_with_args("todo__done", json!({}));
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let hooked_output = run_async(call.eval(&mut hooked)).unwrap();
         let plain_output = run_async(call.eval(&mut plain)).unwrap();
@@ -5517,7 +5511,7 @@ mod tests {
         let marker = "tool-hooks-user-x7x";
         let mut ctx = ctx_with_tool_hooks(marker, |_| {});
         ctx.tool_scope.functions.append_user_interaction_functions();
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let output = run_async(call_with_args("user__confirm", json!({})).eval(&mut ctx)).unwrap();
 
@@ -5554,7 +5548,7 @@ mod tests {
         let mut hooked = ctx_with_tool_hooks(marker, |_| {});
         let mut plain = RequestContext::new(Arc::new(AppState::test_default()), WorkingMode::Cmd);
         let call = call_with_args("nonexistent_tool", json!({}));
-        let _guard = crate::hooks::test_sink::install();
+        let _guard = hooks::test_sink::install();
 
         let hooked_err = run_async(call.eval(&mut hooked)).unwrap_err();
         let plain_err = run_async(call.eval(&mut plain)).unwrap_err();

src/graph/agent.rs

@@ -36,9 +36,6 @@ impl AgentNodeExecutor {
         parent_ctx: &mut RequestContext,
         retire_peer_on_return: bool,
     ) -> Result<AgentExecutionOutcome> {
-        // The teammate identity doubles as the agent's id for observers; the
-        // run consumes it off the ctx, so it is captured up front. Nodes
-        // without one are identified by their node id.
         let agent_hook_id = parent_ctx
             .peer_assignment
             .as_ref()
@@ -52,9 +49,6 @@ impl AgentNodeExecutor {
             retire_peer_on_return,
         )
         .await;
-        // Fired at the point of failure, before a declared fallback converts
-        // it into a successful route: observers must see the agent's failure
-        // even when the node itself continues.
         if let Err(e) = &result {
             hooks::fire(
                 HookEvent::AgentFailed,

src/graph/executor.rs

@@ -514,12 +514,6 @@ fn provision_frontier_peers(
     (Some(registry), assignments)
 }
 
-/// Pre-resolved `graph.node.completed`/`graph.node.failed` snapshots plus
-/// the metadata one branch task needs to fire them. Captured per branch
-/// before the branch is spawned: every parallel super-step branch owns its
-/// emitter, so node metadata never crosses between concurrent tasks and no
-/// task borrows the context it was forked from. Base envs are rebuilt at
-/// fire time so the timestamp reflects when the node actually finished.
 struct NodeHookEmitter {
     completed: Vec<ResolvedHook>,
     failed: Vec<ResolvedHook>,
@@ -1152,8 +1146,8 @@ mod integration_tests {
         which::which(name).is_ok()
     }
 
-    fn hooks_config(entries: &[(&str, &str)]) -> crate::hooks::HooksMap {
-        let mut map = crate::hooks::HooksMap::new();
+    fn hooks_config(entries: &[(&str, &str)]) -> hooks::HooksMap {
+        let mut map = hooks::HooksMap::new();
         for (event, name) in entries {
             map.entry((*event).to_string()).or_default().push(HookDef {
                 name: (*name).to_string(),
@@ -1163,7 +1157,7 @@ mod integration_tests {
         map
     }
 
-    fn ctx_with_global_hooks(hooks: crate::hooks::HooksMap) -> RequestContext {
+    fn ctx_with_global_hooks(hooks: hooks::HooksMap) -> RequestContext {
         let mut app = AppState::test_default();
         app.config = Arc::new(AppConfig {
             hooks,
@@ -1172,8 +1166,8 @@ mod integration_tests {
         RequestContext::new(Arc::new(app), WorkingMode::Cmd)
     }
 
-    fn hook_captures_named(name: &str) -> Vec<crate::hooks::test_sink::Capture> {
-        crate::hooks::test_sink::snapshot()
+    fn hook_captures_named(name: &str) -> Vec<hooks::test_sink::Capture> {
+        hooks::test_sink::snapshot()
             .into_iter()
             .filter(|capture| capture.hook_name == name)
             .collect()
@@ -1328,7 +1322,7 @@ nodes:
     /// node also yields `graph.node.completed`, never `graph.node.failed`.
     #[tokio::test]
     async fn agent_node_failure_with_fallback_fires_agent_failed_and_node_completed() {
-        let _sink = crate::hooks::test_sink::install();
+        let _sink = hooks::test_sink::install();
         let mut ctx = ctx_with_global_hooks(hooks_config(&[
             ("agent.failed", "t037_fb_agent_failed"),
             ("graph.node.completed", "t037_fb_node_completed"),
@@ -1404,7 +1398,7 @@ nodes:
             eprintln!("skipping: bash not available");
             return;
         }
-        let _sink = crate::hooks::test_sink::install();
+        let _sink = hooks::test_sink::install();
         let ws = TestWorkspace::new();
         for script in [
             "dispatcher.sh",
@@ -1512,7 +1506,7 @@ nodes:
     /// event stays gated off because the agent whitelisted nothing.
     #[tokio::test]
     async fn graph_agent_hooks_resolve_from_graph_yaml_top_level() {
-        let _sink = crate::hooks::test_sink::install();
+        let _sink = hooks::test_sink::install();
         let mut ctx =
             ctx_with_global_hooks(hooks_config(&[("graph.node.completed", "t037_gy_global")]));
 
@@ -1571,7 +1565,7 @@ nodes:
     /// failure then propagates out of the executor.
     #[tokio::test]
     async fn genuine_node_failure_fires_graph_node_failed_with_payload() {
-        let _sink = crate::hooks::test_sink::install();
+        let _sink = hooks::test_sink::install();
         let mut ctx = ctx_with_global_hooks(hooks_config(&[(
             "graph.node.failed",
             "t037_gf_node_failed",
@@ -1626,7 +1620,7 @@ nodes:
     #[tokio::test]
     async fn malformed_graph_yaml_hook_is_skipped_without_breaking_the_node() {
         crate::testing::install_warn_collector();
-        let _sink = crate::hooks::test_sink::install();
+        let _sink = hooks::test_sink::install();
         let mut ctx = make_ctx();
 
         let yaml = r#"

src/hooks.rs

@@ -248,10 +248,6 @@ fn push_defs(event_name: &str, defs: &[HookDef], cwd: &Path, out: &mut Vec<Resol
     }
 }
 
-/// Fires every hook configured for `event` in `ctx`. Fire-and-forget: each
-/// hook runs in its own detached task and nothing about its outcome — exit
-/// status, stdout, stderr — is awaited or read. `payload` carries the tool
-/// arguments JSON for `tool.*` events; pass `None` otherwise.
 #[allow(dead_code)]
 pub fn fire(
     event: HookEvent,
@@ -263,6 +259,7 @@ pub fn fire(
     if resolved.is_empty() {
         return;
     }
+
     fire_resolved(event, resolved, base_envs(event, ctx), extras, payload);
 }
 
@@ -407,9 +404,6 @@ pub(crate) fn base_envs_parts(
     envs
 }
 
-/// Creates the payload file fresh (`create_new`) with owner-only permissions,
-/// so a pre-existing path — symlink or otherwise — is an error. On failure
-/// the hook still runs, just without `COYOTE_HOOK_PAYLOAD_FILE`.
 async fn write_payload_file(path: &Path, json: &str) -> std::io::Result<()> {
     let mut options = tokio::fs::OpenOptions::new();
     options.write(true).create_new(true);
@@ -423,9 +417,6 @@ async fn write_payload_file(path: &Path, json: &str) -> std::io::Result<()> {
 #[cfg(test)]
 static PAYLOAD_DIR_OVERRIDE: std::sync::Mutex<Option<PathBuf>> = std::sync::Mutex::new(None);
 
-/// Directory payload files are written to: `std::env::temp_dir()`, except in
-/// tests, where `PAYLOAD_DIR_OVERRIDE` redirects it without touching
-/// process-global state like `TMPDIR`.
 fn payload_dir() -> PathBuf {
     #[cfg(test)]
     if let Some(dir) = PAYLOAD_DIR_OVERRIDE

src/main.rs

@@ -706,11 +706,6 @@ async fn shell_execute(
                     if code == 0 && app.save_shell_history {
                         let _ = append_to_shell_history(&shell.name, &eval_str, code);
                     }
-                    // `process::exit` never returns, so the dispatch
-                    // wrapper's bracket close in `run()` is unreachable
-                    // from here: close the top-level agent bracket now.
-                    // The agent run itself succeeded — the exit code
-                    // belongs to the user's shell command, not to us.
                     ctx.top_level_agent_finished(None);
                     hooks::drain_pending(EXIT_HOOK_DRAIN_TIMEOUT).await;
                     process::exit(code);
@@ -760,9 +755,6 @@ async fn shell_execute(
     Ok(())
 }
 
-/// The LLM portion of one shell-execute turn — everything the turn bracket
-/// measures. The interactive follow-up menu (execute/revise/describe/copy)
-/// runs after the turn has already completed.
 async fn shell_execute_turn(
     ctx: &mut RequestContext,
     input: &Input,

src/repl/mod.rs

@@ -1695,11 +1695,6 @@ fn print_turn_divider() {
     println!();
 }
 
-/// Auto-compression seam for the ask loop: `session.compressed` fires only
-/// when compression actually succeeded. A failed auto-compression is
-/// survivable mid-session, so the error is logged and swallowed rather
-/// than aborting the turn — unlike `.compress session`, which surfaces
-/// the failure to the user.
 async fn auto_compress_session(ctx: &mut RequestContext) {
     match ctx.compress_session().await {
         Ok(()) => hooks::fire(HookEvent::SessionCompressed, ctx, &[], None),

src/sandbox/mixins.rs

@@ -203,13 +203,6 @@ pub fn discover() -> Result<Vec<DiscoveredMixin>> {
     for path in collect_mixins(&paths::roles_dir(), &[ScanMode::Flat]) {
         out.push(read_mixin(path)?);
     }
-    // Mirrors the role-hook working directory (role hook commands run with
-    // cwd = roles_dir), so `./hooks/*.sbx-mixin.yaml` beside a role resolves
-    // the same way the role's hook commands do — intentionally NOT
-    // paths::hooks_dir(). The agent-hook working directory
-    // (`<agents>/<agent>/hooks/` — agent hooks run with cwd = the agent's
-    // data dir) is deliberately not scanned here either; agent-dir scanning
-    // above covers `<agents>/<agent>/*.sbx-mixin.yaml` only.
     for path in collect_mixins(&paths::roles_dir().join("hooks"), &[ScanMode::Flat]) {
         out.push(read_mixin(path)?);
     }