feat(TASK-061): add rag.sync.* and mcp.server.* hook events plus COYOTE_ROLE

- Register five new events (26 -> 31): rag.sync.started/completed/failed
  and mcp.server.connected/failed, whitelist-gated for agent global hooks
  like every non-escalation event
- Bracket every real RAG document sync with rag.sync.* via pre-resolved
  RagSyncHooks snapshots carried into the build funnels; cache hits, pure
  loads, and attaches fire nothing, and a user abort mid-sync counts as a
  failure
- Fire mcp.server.connected only on real spawns in McpFactory::acquire
  (reusing a live server is silent), marking respawns of a previously
  live key with COYOTE_MCP_RECONNECT; mcp.server.failed carries
  COYOTE_ERROR and COYOTE_MCP_AUTH_REQUIRED on auth failures. Boot-time
  registry connects deliberately fire nothing
- Carry COYOTE_ROLE on session.* and turn.* events, resolved at fire
  time so mid-session role switches and temp roles are reflected

src/config/agent.rs

@@ -1,6 +1,6 @@
 use super::*;
 
-use crate::hooks::HooksMap;
+use crate::hooks::{HooksMap, RagSyncHooks};
 use crate::{
     client::Model,
     config::memory,
@@ -356,6 +356,16 @@ impl Agent {
             }
         };
 
+        // Resolved from the config under construction: no context carries
+        // this agent yet, but its whitelist gate and hooks must still apply
+        // to the RAG builds below.
+        let rag_sync_hooks = RagSyncHooks::resolve_for_agent(
+            &app.hooks,
+            &agent_config.global_hooks,
+            &agent_config.hooks,
+            name,
+        );
+
         let rag = if rag_path.exists() {
             let key = RagKey::Agent(name.to_string());
             let app_clone = app.clone();
@@ -388,6 +398,7 @@ impl Agent {
                 let app_clone = app.clone();
                 let rag_path_clone = rag_path.clone();
                 let abort = abort_signal.clone();
+                let sync_hooks = rag_sync_hooks.clone();
                 let rag = app_state
                     .rag_cache
                     .load_with(key, || async move {
@@ -398,6 +409,7 @@ impl Agent {
                             &document_paths,
                             abort,
                             true,
+                            sync_hooks,
                         )
                         .await
                     })
@@ -421,6 +433,7 @@ impl Agent {
                     &loaders,
                     info_flag,
                     abort_signal.clone(),
+                    &rag_sync_hooks,
                 )
                 .await?
             }
@@ -1303,6 +1316,7 @@ async fn init_graph_rags(
     loaders: &HashMap<String, String>,
     info_flag: bool,
     abort_signal: AbortSignal,
+    sync_hooks: &RagSyncHooks,
 ) -> Result<HashMap<String, Arc<Rag>>> {
     let mut rags = HashMap::new();
     if info_flag {
@@ -1379,6 +1393,7 @@ async fn init_graph_rags(
             let path_clone = rag_path.clone();
             let name_clone = node_id.clone();
             let abort = abort_signal.clone();
+            let sync_hooks = sync_hooks.clone();
             app_state
                 .rag_cache
                 .load_with(key, || async move {
@@ -1389,6 +1404,7 @@ async fn init_graph_rags(
                         &document_paths,
                         &config,
                         abort,
+                        sync_hooks,
                     )
                     .await
                 })

src/config/mcp_factory.rs

@@ -1,5 +1,6 @@
+use crate::hooks::McpServerHooks;
 use crate::mcp::{
-    ConnectedServer, JsonField, McpAuthRequired, McpServer, McpTransportType,
+    ConnectedServer, HttpAuth, JsonField, McpAuthRequired, McpServer, McpTransportType,
     is_auth_required_error, resolve_http_auth, spawn_mcp_server,
 };
 
@@ -95,15 +96,50 @@ impl McpFactory {
         name: &str,
         spec: &McpServer,
         log_path: Option<&Path>,
+        hooks: &McpServerHooks,
     ) -> Result<Arc<ConnectedServer>> {
         let key = McpServerKey::from_spec(name, spec);
 
+        // Reuse of a live server fires no hooks; only a real spawn below
+        // reports anything.
         if let Some(existing) = self.try_get_active(&key) {
             return Ok(existing);
         }
 
+        // The live probe failed, so an entry still present for this key is a
+        // dead weak: the key was connected earlier in this process and the
+        // spawn below is a reconnect.
+        let reconnect = self.active.lock().contains_key(&key);
+
+        let transport = transport_label(&spec.transport_type);
+        let handle = match spawn_server(name, spec, log_path).await {
+            Ok(handle) => handle,
+            Err(e) => {
+                hooks.fire_failed(name, transport, &e, is_auth_required_error(&e));
+                return Err(e);
+            }
+        };
+        self.insert_active(key, &handle);
+        hooks.fire_connected(name, transport, reconnect);
+        Ok(handle)
+    }
+}
+
+fn transport_label(transport: &McpTransportType) -> &'static str {
+    match transport {
+        McpTransportType::Stdio => "stdio",
+        McpTransportType::Http => "http",
+        McpTransportType::Sse => "sse",
+    }
+}
+
+async fn spawn_server(
+    name: &str,
+    spec: &McpServer,
+    log_path: Option<&Path>,
+) -> Result<Arc<ConnectedServer>> {
     let (auth, auth_reason) = resolve_http_auth(name, spec).await;
-        let handle = spawn_mcp_server(spec, log_path, auth).await.map_err(|e| {
+    spawn_transport(spec, log_path, auth).await.map_err(|e| {
         if is_auth_required_error(&e) {
             e.context(McpAuthRequired {
                 server: name.to_string(),
@@ -112,17 +148,39 @@ impl McpFactory {
         } else {
             e
         }
-        })?;
-        self.insert_active(key, &handle);
-        Ok(handle)
+    })
 }
+
+async fn spawn_transport(
+    spec: &McpServer,
+    log_path: Option<&Path>,
+    auth: HttpAuth,
+) -> Result<Arc<ConnectedServer>> {
+    #[cfg(test)]
+    if let Some(result) = STUB_SPAWNS.lock().pop() {
+        return result;
     }
+    spawn_mcp_server(spec, log_path, auth).await
+}
+
+/// Injected spawn outcomes, popped instead of spawning a real transport:
+/// nothing in a test environment speaks MCP over stdio or HTTP, so the
+/// connect path is exercised with fixture handles. Empty means spawn for
+/// real.
+#[cfg(test)]
+static STUB_SPAWNS: Mutex<Vec<Result<Arc<ConnectedServer>>>> = Mutex::new(Vec::new());
 
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::config::test_fixtures::FixtureServer;
+    use crate::config::{AppConfig, AppState, RequestContext, WorkingMode};
+    use crate::hooks::{HookDef, HooksMap, test_sink};
     use crate::mcp::{JsonField, McpServer, McpTransportType};
+    use anyhow::anyhow;
     use indexmap::IndexMap;
+    use rmcp::ServiceExt;
+    use serial_test::serial;
     use std::collections::HashMap;
 
     fn stdio_spec(
@@ -321,4 +379,189 @@ mod tests {
         let map = factory.active.lock();
         assert!(map.is_empty());
     }
+
+    /// Clears injected spawn outcomes on drop so a panicking test cannot
+    /// leak stubs into later tests.
+    struct StubSpawnsGuard;
+
+    impl StubSpawnsGuard {
+        fn push(result: Result<Arc<ConnectedServer>>) -> Self {
+            STUB_SPAWNS.lock().push(result);
+            StubSpawnsGuard
+        }
+    }
+
+    impl Drop for StubSpawnsGuard {
+        fn drop(&mut self) {
+            STUB_SPAWNS.lock().clear();
+        }
+    }
+
+    /// An in-process client/server pair; the returned server half must stay
+    /// alive for the client handle to keep working.
+    async fn fixture_handle() -> (Arc<ConnectedServer>, impl Sized) {
+        let (client_io, server_io) = tokio::io::duplex(4096);
+        let (server, client) = tokio::join!(
+            FixtureServer::default().serve(server_io),
+            ().serve(client_io)
+        );
+        (Arc::new(client.unwrap()), server.unwrap())
+    }
+
+    fn ctx_with_mcp_hooks(marker: &str) -> RequestContext {
+        let mut hooks_map = HooksMap::default();
+        for event in ["mcp.server.connected", "mcp.server.failed"] {
+            hooks_map.insert(
+                event.to_string(),
+                vec![HookDef {
+                    name: format!("{marker}-{event}"),
+                    command: "true".to_string(),
+                }],
+            );
+        }
+        let mut app = AppState::test_default();
+        app.config = Arc::new(AppConfig {
+            hooks: hooks_map,
+            ..Default::default()
+        });
+        RequestContext::new(Arc::new(app), WorkingMode::Cmd)
+    }
+
+    fn mcp_captures(marker: &str) -> Vec<test_sink::Capture> {
+        test_sink::snapshot()
+            .into_iter()
+            .filter(|capture| capture.hook_name.starts_with(marker))
+            .collect()
+    }
+
+    #[tokio::test]
+    #[serial]
+    async fn acquire_fires_connected_only_on_real_spawns_and_marks_reconnects() {
+        let _sink = test_sink::install();
+        let marker = "mcp-spawn-k7d";
+        let ctx = ctx_with_mcp_hooks(marker);
+        let hooks = McpServerHooks::resolve(&ctx);
+        let factory = McpFactory::default();
+        let spec = stdio_spec("fixture-server-cmd", None, None);
+
+        let (first, _first_server) = fixture_handle().await;
+        let stub = StubSpawnsGuard::push(Ok(first.clone()));
+        let connected = factory.acquire("srv", &spec, None, &hooks).await.unwrap();
+        drop(stub);
+        assert!(Arc::ptr_eq(&connected, &first));
+        let captures = mcp_captures(marker);
+        assert_eq!(captures.len(), 1, "{captures:?}");
+        let capture = &captures[0];
+        assert_eq!(capture.hook_name, format!("{marker}-mcp.server.connected"));
+        assert_eq!(
+            capture.envs.get("COYOTE_MCP_SERVER").map(String::as_str),
+            Some("srv")
+        );
+        assert_eq!(
+            capture.envs.get("COYOTE_MCP_TRANSPORT").map(String::as_str),
+            Some("stdio")
+        );
+        assert!(
+            !capture.envs.contains_key("COYOTE_MCP_RECONNECT"),
+            "a first connect must not be marked as a reconnect"
+        );
+
+        let reused = factory.acquire("srv", &spec, None, &hooks).await.unwrap();
+        assert!(Arc::ptr_eq(&reused, &first));
+        assert_eq!(
+            mcp_captures(marker).len(),
+            1,
+            "reusing a live server must fire nothing"
+        );
+
+        // Every holder dropped: the weak in the factory dies, and the next
+        // acquire is a real spawn again — now marked as a reconnect.
+        drop(connected);
+        drop(reused);
+        drop(first);
+        let (second, _second_server) = fixture_handle().await;
+        let _stub = StubSpawnsGuard::push(Ok(second.clone()));
+        let respawned = factory.acquire("srv", &spec, None, &hooks).await.unwrap();
+        assert!(Arc::ptr_eq(&respawned, &second));
+        let captures = mcp_captures(marker);
+        assert_eq!(captures.len(), 2, "{captures:?}");
+        assert_eq!(
+            captures[1]
+                .envs
+                .get("COYOTE_MCP_RECONNECT")
+                .map(String::as_str),
+            Some("true")
+        );
+    }
+
+    #[tokio::test]
+    #[serial]
+    async fn acquire_spawn_failure_fires_failed_with_the_error() {
+        let _sink = test_sink::install();
+        let marker = "mcp-fail-v2q";
+        let ctx = ctx_with_mcp_hooks(marker);
+        let hooks = McpServerHooks::resolve(&ctx);
+        let factory = McpFactory::default();
+        // No stub: the nonexistent binary drives the real spawn-error path.
+        let spec = stdio_spec("coyote-nonexistent-mcp-binary-v2q", None, None);
+
+        let result = factory.acquire("bad-srv", &spec, None, &hooks).await;
+
+        assert!(result.is_err());
+        let captures = mcp_captures(marker);
+        assert_eq!(captures.len(), 1, "{captures:?}");
+        let capture = &captures[0];
+        assert_eq!(capture.hook_name, format!("{marker}-mcp.server.failed"));
+        assert_eq!(
+            capture.envs.get("COYOTE_MCP_SERVER").map(String::as_str),
+            Some("bad-srv")
+        );
+        assert_eq!(
+            capture.envs.get("COYOTE_MCP_TRANSPORT").map(String::as_str),
+            Some("stdio")
+        );
+        assert!(
+            capture
+                .envs
+                .get("COYOTE_ERROR")
+                .is_some_and(|error| !error.is_empty())
+        );
+        assert!(
+            !capture.envs.contains_key("COYOTE_MCP_AUTH_REQUIRED"),
+            "a plain spawn failure must not be flagged as auth-required"
+        );
+    }
+
+    #[tokio::test]
+    #[serial]
+    async fn acquire_auth_failure_sets_the_auth_required_flag() {
+        let _sink = test_sink::install();
+        let marker = "mcp-auth-h4n";
+        let ctx = ctx_with_mcp_hooks(marker);
+        let hooks = McpServerHooks::resolve(&ctx);
+        let factory = McpFactory::default();
+        let spec = stdio_spec("oauth-cmd", None, None);
+        let _stub = StubSpawnsGuard::push(Err(anyhow!("Auth required: no stored token")));
+
+        let err = factory
+            .acquire("oauth-srv", &spec, None, &hooks)
+            .await
+            .unwrap_err();
+
+        assert!(
+            err.downcast_ref::<McpAuthRequired>().is_some(),
+            "the auth error must be wrapped in McpAuthRequired context"
+        );
+        let captures = mcp_captures(marker);
+        assert_eq!(captures.len(), 1, "{captures:?}");
+        let capture = &captures[0];
+        assert_eq!(capture.hook_name, format!("{marker}-mcp.server.failed"));
+        assert_eq!(
+            capture
+                .envs
+                .get("COYOTE_MCP_AUTH_REQUIRED")
+                .map(String::as_str),
+            Some("true")
+        );
+    }
 }

src/config/rag_cache.rs

@@ -47,3 +47,61 @@ impl RagCache {
         Ok(arc)
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::config::AppConfig;
+    use crate::hooks::test_sink;
+    use crate::rag::RagData;
+    use anyhow::anyhow;
+    use serial_test::serial;
+    use std::time::{SystemTime, UNIX_EPOCH};
+
+    /// A cache hit must never reach the loader: the loader closure is where
+    /// a real RAG build (and its `rag.sync.*` hook dispatch) happens, so
+    /// returning the cached entry is what keeps warm-cache lookups silent.
+    #[tokio::test]
+    #[serial]
+    async fn cache_hit_returns_the_cached_rag_without_running_the_loader() {
+        let _sink = test_sink::install();
+        test_sink::drain();
+        let unique = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap()
+            .as_nanos();
+        let dir = std::env::temp_dir().join(format!("coyote-rag-cache-hit-{unique}"));
+        std::fs::create_dir_all(&dir).unwrap();
+        let path = dir.join("kb.yaml");
+        let data = RagData {
+            driver: "yaml".to_string(),
+            // The only embedding model resolvable in tests; see
+            // `seed_model_registries` in the request_context tests.
+            embedding_model: "test-seeded:test-embedder".to_string(),
+            chunk_size: 1000,
+            chunk_overlap: 100,
+            top_k: 5,
+            ..Default::default()
+        };
+        std::fs::write(&path, serde_yaml::to_string(&data).unwrap()).unwrap();
+        let rag = Arc::new(Rag::load(&AppConfig::default(), "kb", &path).await.unwrap());
+        let _ = std::fs::remove_dir_all(&dir);
+
+        let cache = RagCache::default();
+        let key = RagKey::Named("kb".to_string());
+        cache.insert(key.clone(), &rag);
+
+        let loaded = cache
+            .load_with(key, || async {
+                Err(anyhow!("a cache hit must not rebuild"))
+            })
+            .await
+            .unwrap();
+
+        assert!(Arc::ptr_eq(&loaded, &rag));
+        assert!(
+            test_sink::drain().is_empty(),
+            "a cache hit must dispatch no hooks"
+        );
+    }
+}

src/config/request_context.rs

@@ -1077,7 +1077,12 @@ impl RequestContext {
         // COYOTE_SESSION_ID and session-held role hooks still resolve; no
         // session means no event.
         if self.session.is_some() {
-            hooks::fire(HookEvent::SessionEnded, self, &[], None);
+            hooks::fire(
+                HookEvent::SessionEnded,
+                self,
+                &hooks::role_extras(self),
+                None,
+            );
         }
         if let Some(mut session) = self.session.take() {
             let sessions_dir = self.sessions_dir();
@@ -4406,6 +4411,7 @@ impl RequestContext {
 
             if !server_ids.is_empty() {
                 let app_ref = &self.app;
+                let mcp_hooks = hooks::McpServerHooks::resolve(self);
                 let acquire_all = async {
                     let mut handles = Vec::new();
                     let mut auth_required = Vec::new();
@@ -4413,7 +4419,7 @@ impl RequestContext {
                         if let Some(spec) = mcp_config.mcp_servers.get(id) {
                             match app_ref
                                 .mcp_factory
-                                .acquire(id, spec, app_ref.mcp_log_path.as_deref())
+                                .acquire(id, spec, app_ref.mcp_log_path.as_deref(), &mcp_hooks)
                                 .await
                             {
                                 Ok(handle) => handles.push((id.clone(), handle)),
@@ -4738,9 +4744,19 @@ impl RequestContext {
         self.refresh_mcp_tool_filters();
         self.init_agent_session_variables(new_session)?;
         if created_new_session {
-            hooks::fire(HookEvent::SessionStarted, self, &[], None);
+            hooks::fire(
+                HookEvent::SessionStarted,
+                self,
+                &hooks::role_extras(self),
+                None,
+            );
         } else {
-            hooks::fire(HookEvent::SessionResumed, self, &[], None);
+            hooks::fire(
+                HookEvent::SessionResumed,
+                self,
+                &hooks::role_extras(self),
+                None,
+            );
         }
         Ok(())
     }
@@ -5334,6 +5350,7 @@ impl RequestContext {
         let vault = self.app.vault.clone();
         let rag_cache = self.rag_cache();
         let working_mode = self.working_mode;
+        let sync_hooks = hooks::RagSyncHooks::resolve(self);
 
         let (rag, rag_key): (Arc<Rag>, Option<RagKey>) = match rag {
             None => {
@@ -5352,6 +5369,7 @@ impl RequestContext {
                             &[],
                             abort_signal.clone(),
                             false,
+                            sync_hooks,
                         )
                         .await?,
                     ),
@@ -5373,7 +5391,15 @@ impl RequestContext {
                                 if working_mode.is_cmd() {
                                     bail!("Unknown RAG '{name}'");
                                 }
-                                Rag::init(&app, name, &rag_path, &[], abort_signal.clone(), true)
+                                Rag::init(
+                                    &app,
+                                    name,
+                                    &rag_path,
+                                    &[],
+                                    abort_signal.clone(),
+                                    true,
+                                    sync_hooks,
+                                )
                                 .await
                             } else {
                                 Rag::load_async(&app, &vault, name, &rag_path).await
@@ -5458,6 +5484,7 @@ impl RequestContext {
             false,
             &self.app.config,
             abort_signal,
+            hooks::RagSyncHooks::resolve(self),
         )
         .await?;
         self.rag = Some(Arc::new(rag));
@@ -5488,7 +5515,14 @@ impl RequestContext {
              This will call the embedding API and may take a while.",
             rag.file_count()
         );
-        rag.refresh_document_paths(&document_paths, true, true, &self.app.config, abort_signal)
+        rag.refresh_document_paths(
+            &document_paths,
+            true,
+            true,
+            &self.app.config,
+            abort_signal,
+            hooks::RagSyncHooks::resolve(self),
+        )
         .await?;
         self.rag = Some(Arc::new(rag));
         Ok(())

src/function/agents.rs

@@ -961,10 +961,11 @@ async fn populate_agent_mcp_runtime(ctx: &mut RequestContext, server_ids: &[Stri
         })
         .unwrap_or_default();
 
+    let mcp_hooks = hooks::McpServerHooks::resolve(ctx);
     for (id, spec) in server_specs {
         let handle = app
             .mcp_factory
-            .acquire(&id, &spec, app.mcp_log_path.as_deref())
+            .acquire(&id, &spec, app.mcp_log_path.as_deref(), &mcp_hooks)
             .await?;
         ctx.tool_scope.mcp_runtime.insert(id, handle);
     }

src/hooks.rs

@@ -132,6 +132,11 @@ pub enum HookEvent {
     JobStarted,
     JobCompleted,
     JobFailed,
+    RagSyncStarted,
+    RagSyncCompleted,
+    RagSyncFailed,
+    McpServerConnected,
+    McpServerFailed,
 }
 
 impl HookEvent {
@@ -163,10 +168,15 @@ impl HookEvent {
             HookEvent::JobStarted => "job.started",
             HookEvent::JobCompleted => "job.completed",
             HookEvent::JobFailed => "job.failed",
+            HookEvent::RagSyncStarted => "rag.sync.started",
+            HookEvent::RagSyncCompleted => "rag.sync.completed",
+            HookEvent::RagSyncFailed => "rag.sync.failed",
+            HookEvent::McpServerConnected => "mcp.server.connected",
+            HookEvent::McpServerFailed => "mcp.server.failed",
         }
     }
 
-    const ALL: [HookEvent; 26] = [
+    const ALL: [HookEvent; 31] = [
         HookEvent::TurnStarted,
         HookEvent::TurnCompleted,
         HookEvent::TurnInterrupted,
@@ -193,6 +203,11 @@ impl HookEvent {
         HookEvent::JobStarted,
         HookEvent::JobCompleted,
         HookEvent::JobFailed,
+        HookEvent::RagSyncStarted,
+        HookEvent::RagSyncCompleted,
+        HookEvent::RagSyncFailed,
+        HookEvent::McpServerConnected,
+        HookEvent::McpServerFailed,
     ];
 }
 
@@ -208,6 +223,191 @@ pub struct ResolvedHook {
     pub cwd: PathBuf,
 }
 
+/// Pre-resolved `rag.sync.*` hooks plus the names `base_envs_parts` needs,
+/// carried by value into the context-free RAG build funnels (`Rag::init`,
+/// `Rag::init_with_config`, `Rag::refresh_document_paths`). Resolution
+/// happens where the caller's identity is known; dispatch happens inside the
+/// funnel, bracketing the one real sync it performs — so cache hits, pure
+/// loads, and attaches (which never enter a funnel) fire nothing.
+#[derive(Debug, Clone, Default)]
+pub struct RagSyncHooks {
+    started: Vec<ResolvedHook>,
+    completed: Vec<ResolvedHook>,
+    failed: Vec<ResolvedHook>,
+    session_name: Option<String>,
+    agent_name: Option<String>,
+}
+
+impl RagSyncHooks {
+    pub fn resolve(ctx: &RequestContext) -> Self {
+        Self {
+            started: ctx.resolved_hooks(HookEvent::RagSyncStarted),
+            completed: ctx.resolved_hooks(HookEvent::RagSyncCompleted),
+            failed: ctx.resolved_hooks(HookEvent::RagSyncFailed),
+            session_name: ctx
+                .session
+                .as_ref()
+                .map(|session| session.name().to_string()),
+            agent_name: ctx.agent.as_ref().map(|agent| agent.name().to_string()),
+        }
+    }
+
+    /// Resolution for `Agent::init`, which builds agent and graph-node RAGs
+    /// before any context carries the agent: the whitelist gate and the
+    /// agent's own hooks come straight from the config being constructed.
+    /// No session or role exists at that point.
+    pub fn resolve_for_agent(
+        global_hooks: &HooksMap,
+        gate: &[String],
+        agent_hooks: &HooksMap,
+        agent_name: &str,
+    ) -> Self {
+        let resolve = |event| {
+            resolve_hooks(
+                event,
+                global_hooks,
+                Some((gate, agent_name)),
+                None,
+                Some((agent_hooks, agent_name)),
+            )
+        };
+        Self {
+            started: resolve(HookEvent::RagSyncStarted),
+            completed: resolve(HookEvent::RagSyncCompleted),
+            failed: resolve(HookEvent::RagSyncFailed),
+            session_name: None,
+            agent_name: Some(agent_name.to_string()),
+        }
+    }
+
+    pub fn fire_started(&self, rag_name: &str, rag_path: &str) {
+        self.fire(
+            HookEvent::RagSyncStarted,
+            &self.started,
+            rag_name,
+            rag_path,
+            &[],
+        );
+    }
+
+    pub fn fire_completed(&self, rag_name: &str, rag_path: &str, doc_count: usize) {
+        self.fire(
+            HookEvent::RagSyncCompleted,
+            &self.completed,
+            rag_name,
+            rag_path,
+            &[("COYOTE_RAG_DOC_COUNT", doc_count.to_string())],
+        );
+    }
+
+    /// A user abort mid-sync counts as a failure: the funnel's sync came
+    /// back `Err` either way, and the knowledge base was not (re)built.
+    pub fn fire_failed(&self, rag_name: &str, rag_path: &str, error: &anyhow::Error) {
+        self.fire(
+            HookEvent::RagSyncFailed,
+            &self.failed,
+            rag_name,
+            rag_path,
+            &[("COYOTE_ERROR", format!("{error:#}"))],
+        );
+    }
+
+    fn fire(
+        &self,
+        event: HookEvent,
+        resolved: &[ResolvedHook],
+        rag_name: &str,
+        rag_path: &str,
+        extras: &[(&str, String)],
+    ) {
+        if resolved.is_empty() {
+            return;
+        }
+        let base_envs = base_envs_parts(
+            event,
+            self.session_name.as_deref(),
+            self.agent_name.as_deref(),
+        );
+        let mut envs = vec![
+            ("COYOTE_RAG_NAME", rag_name.to_string()),
+            ("COYOTE_RAG_PATH", rag_path.to_string()),
+        ];
+        envs.extend(extras.iter().map(|(key, value)| (*key, value.clone())));
+        fire_resolved(event, resolved.to_vec(), base_envs, &envs, None);
+    }
+}
+
+/// Pre-resolved `mcp.server.*` hooks plus the names `base_envs_parts` needs,
+/// carried into the context-free `McpFactory::acquire`. Dispatch happens at
+/// the spawn itself — one event per real spawn — so handing back an
+/// already-live server fires nothing.
+#[derive(Debug, Clone, Default)]
+pub struct McpServerHooks {
+    connected: Vec<ResolvedHook>,
+    failed: Vec<ResolvedHook>,
+    session_name: Option<String>,
+    agent_name: Option<String>,
+}
+
+impl McpServerHooks {
+    pub fn resolve(ctx: &RequestContext) -> Self {
+        Self {
+            connected: ctx.resolved_hooks(HookEvent::McpServerConnected),
+            failed: ctx.resolved_hooks(HookEvent::McpServerFailed),
+            session_name: ctx
+                .session
+                .as_ref()
+                .map(|session| session.name().to_string()),
+            agent_name: ctx.agent.as_ref().map(|agent| agent.name().to_string()),
+        }
+    }
+
+    /// `reconnect` marks a spawn for a server key that was live earlier in
+    /// this process; the variable is omitted entirely on a first connect.
+    pub fn fire_connected(&self, server: &str, transport: &str, reconnect: bool) {
+        let mut extras = vec![
+            ("COYOTE_MCP_SERVER", server.to_string()),
+            ("COYOTE_MCP_TRANSPORT", transport.to_string()),
+        ];
+        if reconnect {
+            extras.push(("COYOTE_MCP_RECONNECT", "true".to_string()));
+        }
+        self.fire(HookEvent::McpServerConnected, &self.connected, &extras);
+    }
+
+    /// `auth_required` marks an `McpAuthRequired` failure; the variable is
+    /// omitted on every other error.
+    pub fn fire_failed(
+        &self,
+        server: &str,
+        transport: &str,
+        error: &anyhow::Error,
+        auth_required: bool,
+    ) {
+        let mut extras = vec![
+            ("COYOTE_MCP_SERVER", server.to_string()),
+            ("COYOTE_MCP_TRANSPORT", transport.to_string()),
+            ("COYOTE_ERROR", format!("{error:#}")),
+        ];
+        if auth_required {
+            extras.push(("COYOTE_MCP_AUTH_REQUIRED", "true".to_string()));
+        }
+        self.fire(HookEvent::McpServerFailed, &self.failed, &extras);
+    }
+
+    fn fire(&self, event: HookEvent, resolved: &[ResolvedHook], extras: &[(&str, String)]) {
+        if resolved.is_empty() {
+            return;
+        }
+        let base_envs = base_envs_parts(
+            event,
+            self.session_name.as_deref(),
+            self.agent_name.as_deref(),
+        );
+        fire_resolved(event, resolved.to_vec(), base_envs, extras, None);
+    }
+}
+
 impl RequestContext {
     /// Hooks that apply to this context for `event`, in firing order: global
     /// (whitelisted through `global_hooks` when an agent is active), then
@@ -510,6 +710,21 @@ pub(crate) fn base_envs_parts(
     envs
 }
 
+/// `COYOTE_ROLE` extras for the `session.*` and `turn.*` fire sites — the
+/// only two families that carry the variable. Resolved at fire time, because
+/// roles change mid-session (`.role`, `.exit role`, temp roles): the role
+/// held directly on the context wins, then the name of a role a session has
+/// absorbed. Derived roles have no name and report nothing.
+pub fn role_extras(ctx: &RequestContext) -> Vec<(&'static str, String)> {
+    ctx.role
+        .as_ref()
+        .map(|role| role.name())
+        .filter(|name| !name.is_empty())
+        .or_else(|| ctx.session.as_ref().and_then(|session| session.role_name()))
+        .map(|name| vec![("COYOTE_ROLE", name.to_string())])
+        .unwrap_or_default()
+}
+
 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);
@@ -1405,6 +1620,11 @@ mod tests {
             (HookEvent::JobStarted, "job.started"),
             (HookEvent::JobCompleted, "job.completed"),
             (HookEvent::JobFailed, "job.failed"),
+            (HookEvent::RagSyncStarted, "rag.sync.started"),
+            (HookEvent::RagSyncCompleted, "rag.sync.completed"),
+            (HookEvent::RagSyncFailed, "rag.sync.failed"),
+            (HookEvent::McpServerConnected, "mcp.server.connected"),
+            (HookEvent::McpServerFailed, "mcp.server.failed"),
         ];
         for (event, name) in cases {
             assert_eq!(event.as_str(), name);
@@ -1416,6 +1636,55 @@ mod tests {
         assert_eq!(HookEvent::ALL.len(), cases.len());
     }
 
+    #[test]
+    fn rag_and_mcp_wildcard_whitelist_entries_are_valid() {
+        for event in [
+            "rag.sync.started",
+            "rag.sync.completed",
+            "rag.sync.failed",
+            "mcp.server.connected",
+            "mcp.server.failed",
+        ] {
+            assert!(
+                entry_is_valid_wildcard(&format!("{event}.*")),
+                "'{event}.*' must validate as an <event>.* wildcard"
+            );
+        }
+        // Family prefixes are not events: like `tool.*`, these are partial
+        // globs that admit nothing.
+        assert!(!entry_is_valid_wildcard("rag.sync.*"));
+        assert!(!entry_is_valid_wildcard("mcp.server.*"));
+    }
+
+    #[test]
+    fn rag_and_mcp_events_stay_behind_the_agent_whitelist_gate() {
+        let mut global = hooks_map("rag.sync.started", &[("watch", "cmd-rag")]);
+        global.extend(hooks_map("mcp.server.connected", &[("watch", "cmd-mcp")]));
+
+        for event in [HookEvent::RagSyncStarted, HookEvent::McpServerConnected] {
+            let resolved = resolve_hooks(event, &global, Some((&[], "gated-agent")), None, None);
+            assert!(
+                resolved.is_empty(),
+                "{} must stay whitelist-gated for agents",
+                event.as_str()
+            );
+        }
+
+        let gate = vec![
+            "rag.sync.started.*".to_string(),
+            "mcp.server.connected.*".to_string(),
+        ];
+        for event in [HookEvent::RagSyncStarted, HookEvent::McpServerConnected] {
+            let resolved = resolve_hooks(event, &global, Some((&gate, "gated-agent")), None, None);
+            assert_eq!(
+                names(&resolved),
+                ["watch"],
+                "an `<event>.*` whitelist entry must admit {}",
+                event.as_str()
+            );
+        }
+    }
+
     #[test]
     fn root_context_gets_all_global_hooks() {
         let mut global = hooks_map("turn.started", &[("a", "cmd-a"), ("b", "cmd-b")]);

src/mcp/mod.rs

@@ -401,6 +401,10 @@ impl McpRegistry {
         Ok(())
     }
 
+    /// Boot-time connects fire no `mcp.server.*` hooks: this runs from
+    /// `AppState::new`, before any `RequestContext` exists to resolve hook
+    /// scopes against. Hook-observed connects go through
+    /// `McpFactory::acquire`.
     async fn start_server(&self, id: String) -> Result<Option<(String, Arc<ConnectedServer>)>> {
         let spec = self
             .config

src/rag/mod.rs

@@ -13,6 +13,7 @@ mod splitter;
 use self::graph::{KnowledgeGraph, extract_entities};
 use self::provider::RagProvider;
 use self::providers::{DuckDbProvider, QdrantProvider, YamlProvider};
+use crate::hooks::RagSyncHooks;
 use crate::sandbox::mcp_credentials;
 use crate::vault::{Vault, interpolate_secrets};
 
@@ -144,6 +145,7 @@ impl Rag {
         doc_paths: &[String],
         config: &RagInitConfig,
         abort_signal: AbortSignal,
+        sync_hooks: RagSyncHooks,
     ) -> Result<Self> {
         if doc_paths.is_empty() {
             bail!("Cannot build RAG knowledge base '{name}' with no documents");
@@ -154,12 +156,18 @@ impl Rag {
         let mut rag = Self::create(app, name, save_path, data).await?;
         let loaders = app.document_loaders.clone();
         let (spinner, spinner_rx) = Spinner::create("");
-        abortable_run_with_spinner_rx(
+        sync_hooks.fire_started(&rag.name, &rag.path);
+        let synced = abortable_run_with_spinner_rx(
             rag.sync_documents(doc_paths, true, false, loaders, Some(spinner)),
             spinner_rx,
             abort_signal,
         )
-        .await?;
+        .await;
+        if let Err(err) = synced {
+            sync_hooks.fire_failed(&rag.name, &rag.path, &err);
+            return Err(err);
+        }
+        sync_hooks.fire_completed(&rag.name, &rag.path, rag.file_count());
         if rag.save()? {
             println!("✓ Saved RAG to '{}'.", save_path.display());
         }
@@ -261,6 +269,7 @@ impl Rag {
         doc_paths: &[String],
         abort_signal: AbortSignal,
         prompt_for_driver: bool,
+        sync_hooks: RagSyncHooks,
     ) -> Result<Self> {
         if !*IS_STDOUT_TERMINAL {
             bail!("Failed to init rag in non-interactive mode");
@@ -305,12 +314,18 @@ impl Rag {
         };
         let loaders = app.document_loaders.clone();
         let (spinner, spinner_rx) = Spinner::create("");
-        abortable_run_with_spinner_rx(
+        sync_hooks.fire_started(&rag.name, &rag.path);
+        let synced = abortable_run_with_spinner_rx(
             rag.sync_documents(&paths, true, false, loaders, Some(spinner)),
             spinner_rx,
             abort_signal,
         )
-        .await?;
+        .await;
+        if let Err(err) = synced {
+            sync_hooks.fire_failed(&rag.name, &rag.path, &err);
+            return Err(err);
+        }
+        sync_hooks.fire_completed(&rag.name, &rag.path, rag.file_count());
         if rag.save()? {
             println!("✓ Saved RAG to '{}'.", save_path.display());
         }
@@ -636,10 +651,12 @@ impl Rag {
         force_reingest: bool,
         app: &AppConfig,
         abort_signal: AbortSignal,
+        sync_hooks: RagSyncHooks,
     ) -> Result<()> {
         let loaders = app.document_loaders.clone();
         let (spinner, spinner_rx) = Spinner::create("");
-        abortable_run_with_spinner_rx(
+        sync_hooks.fire_started(&self.name, &self.path);
+        let synced = abortable_run_with_spinner_rx(
             self.sync_documents(
                 document_paths,
                 refresh,
@@ -650,7 +667,12 @@ impl Rag {
             spinner_rx,
             abort_signal,
         )
-        .await?;
+        .await;
+        if let Err(err) = synced {
+            sync_hooks.fire_failed(&self.name, &self.path, &err);
+            return Err(err);
+        }
+        sync_hooks.fire_completed(&self.name, &self.path, self.file_count());
         if self.save()? {
             println!("✓ Saved rag to '{}'.", self.path);
         }
@@ -2280,6 +2302,8 @@ where
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::hooks::{HookDef, HooksMap, test_sink};
+    use serial_test::serial;
     use std::path::PathBuf;
     use std::sync::atomic::{AtomicU64, Ordering};
     use std::time::{SystemTime, UNIX_EPOCH};
@@ -2313,6 +2337,187 @@ mod tests {
         }
     }
 
+    fn rag_hooks_ctx(marker: &str) -> RequestContext {
+        let mut hooks_map = HooksMap::default();
+        for event in ["rag.sync.started", "rag.sync.completed", "rag.sync.failed"] {
+            hooks_map.insert(
+                event.to_string(),
+                vec![HookDef {
+                    name: format!("{marker}-{event}"),
+                    command: "true".to_string(),
+                }],
+            );
+        }
+        let mut app = AppState::test_default();
+        app.config = Arc::new(AppConfig {
+            hooks: hooks_map,
+            ..Default::default()
+        });
+        RequestContext::new(Arc::new(app), WorkingMode::Cmd)
+    }
+
+    fn rag_captures(marker: &str) -> Vec<test_sink::Capture> {
+        test_sink::snapshot()
+            .into_iter()
+            .filter(|capture| capture.hook_name.starts_with(marker))
+            .collect()
+    }
+
+    fn buildable_data() -> RagData {
+        RagData {
+            driver: "yaml".to_string(),
+            // The only embedding model resolvable in tests: the model
+            // registry is a process-global OnceLock pre-seeded by
+            // `seed_model_registries` in the request_context tests.
+            embedding_model: "test-seeded:test-embedder".to_string(),
+            chunk_size: 1000,
+            chunk_overlap: 100,
+            top_k: 5,
+            ..Default::default()
+        }
+    }
+
+    fn yaml_rag(name: &str, path: &Path, data: RagData) -> Rag {
+        Rag {
+            app_config: Arc::new(AppConfig::default()),
+            name: name.to_string(),
+            path: path.display().to_string(),
+            embedding_model: Model::new("openai", "text-embedding-3-small"),
+            bm25: data.build_bm25(),
+            provider: Box::new(YamlProvider::from_data(&data)),
+            node_to_docs: IndexMap::new(),
+            data,
+            last_sources: RwLock::new(None),
+        }
+    }
+
+    #[tokio::test]
+    #[serial]
+    async fn refresh_document_paths_fires_started_then_completed_with_doc_count() {
+        let _sink = test_sink::install();
+        let marker = "rag-sync-ok-v5k";
+        let dir = TempDir::new("sync-hooks-ok");
+        let doc = dir.path.join("doc.txt");
+        fs::write(&doc, "hello rag hooks").unwrap();
+        let doc_path = doc.display().to_string();
+
+        // The prepopulated file entry must use the exact string
+        // sync_documents resolves, so the sync sees an unchanged corpus and
+        // never needs an embeddings client.
+        let loaders = HashMap::new();
+        let (_, _, _, _, local_paths) = resolve_paths(&loaders, std::slice::from_ref(&doc_path))
+            .await
+            .unwrap();
+        let resolved_path = local_paths.iter().next().unwrap().clone();
+
+        let mut data = buildable_data();
+        data.next_file_id = 1;
+        data.files.insert(
+            0,
+            RagFile {
+                hash: sha256("hello rag hooks"),
+                path: resolved_path,
+                documents: vec![],
+            },
+        );
+        let rag_path = dir.path.join("kb.yaml");
+        let rag_path_display = rag_path.display().to_string();
+        let mut rag = yaml_rag("kb", &rag_path, data);
+        let sync_hooks = RagSyncHooks::resolve(&rag_hooks_ctx(marker));
+
+        rag.refresh_document_paths(
+            &[doc_path],
+            false,
+            false,
+            &AppConfig::default(),
+            create_abort_signal(),
+            sync_hooks,
+        )
+        .await
+        .unwrap();
+
+        let captures = rag_captures(marker);
+        assert_eq!(captures.len(), 2, "{captures:?}");
+        assert_eq!(captures[0].hook_name, format!("{marker}-rag.sync.started"));
+        assert_eq!(
+            captures[0].envs.get("COYOTE_RAG_NAME").map(String::as_str),
+            Some("kb")
+        );
+        assert_eq!(
+            captures[0].envs.get("COYOTE_RAG_PATH").map(String::as_str),
+            Some(rag_path_display.as_str())
+        );
+        assert_eq!(
+            captures[1].hook_name,
+            format!("{marker}-rag.sync.completed")
+        );
+        assert_eq!(
+            captures[1]
+                .envs
+                .get("COYOTE_RAG_DOC_COUNT")
+                .map(String::as_str),
+            Some("1")
+        );
+    }
+
+    #[tokio::test]
+    #[serial]
+    async fn refresh_document_paths_fires_started_then_failed_on_sync_error() {
+        let _sink = test_sink::install();
+        let marker = "rag-sync-fail-b8m";
+        let dir = TempDir::new("sync-hooks-fail");
+        let missing = dir.path.join("missing.txt").display().to_string();
+        let rag_path = dir.path.join("kb.yaml");
+        let mut rag = yaml_rag("kb", &rag_path, buildable_data());
+        let sync_hooks = RagSyncHooks::resolve(&rag_hooks_ctx(marker));
+
+        let result = rag
+            .refresh_document_paths(
+                &[missing],
+                false,
+                false,
+                &AppConfig::default(),
+                create_abort_signal(),
+                sync_hooks,
+            )
+            .await;
+
+        assert!(result.is_err(), "syncing a nonexistent document must fail");
+        let captures = rag_captures(marker);
+        assert_eq!(captures.len(), 2, "{captures:?}");
+        assert_eq!(captures[0].hook_name, format!("{marker}-rag.sync.started"));
+        assert_eq!(captures[1].hook_name, format!("{marker}-rag.sync.failed"));
+        assert_eq!(
+            captures[1].envs.get("COYOTE_RAG_NAME").map(String::as_str),
+            Some("kb")
+        );
+        assert!(
+            captures[1]
+                .envs
+                .get("COYOTE_ERROR")
+                .is_some_and(|error| !error.is_empty())
+        );
+    }
+
+    #[tokio::test]
+    #[serial]
+    async fn pure_load_fires_no_rag_sync_events() {
+        let _sink = test_sink::install();
+        test_sink::drain();
+        let dir = TempDir::new("sync-hooks-load");
+        let path = dir.path.join("kb.yaml");
+        fs::write(&path, serde_yaml::to_string(&buildable_data()).unwrap()).unwrap();
+
+        let rag = Rag::load(&AppConfig::default(), "kb", &path).await.unwrap();
+
+        assert_eq!(rag.file_count(), 0);
+        let captures = test_sink::drain();
+        assert!(
+            captures.is_empty(),
+            "a pure load must dispatch no hooks: {captures:?}"
+        );
+    }
+
     #[test]
     fn attached_ragdata_serializes_driver_and_attached() {
         let mut data = RagData {

src/repl/mod.rs

@@ -68,7 +68,7 @@ pub(crate) struct TurnBracket(());
 impl TurnBracket {
     #[must_use]
     pub(crate) fn enter(ctx: &RequestContext) -> Self {
-        hooks::fire(HookEvent::TurnStarted, ctx, &[], None);
+        hooks::fire(HookEvent::TurnStarted, ctx, &hooks::role_extras(ctx), None);
         Self(())
     }
 
@@ -79,16 +79,25 @@ impl TurnBracket {
         result: Result<T>,
     ) -> Result<T> {
         if abort_signal.aborted_ctrlc() {
-            hooks::fire(HookEvent::TurnInterrupted, ctx, &[], None);
+            hooks::fire(
+                HookEvent::TurnInterrupted,
+                ctx,
+                &hooks::role_extras(ctx),
+                None,
+            );
         } else {
             match &result {
-                Ok(_) => hooks::fire(HookEvent::TurnCompleted, ctx, &[], None),
-                Err(err) => hooks::fire(
-                    HookEvent::TurnFailed,
+                Ok(_) => hooks::fire(
+                    HookEvent::TurnCompleted,
                     ctx,
-                    &[("COYOTE_ERROR", format!("{err:#}"))],
+                    &hooks::role_extras(ctx),
                     None,
                 ),
+                Err(err) => {
+                    let mut extras = hooks::role_extras(ctx);
+                    extras.push(("COYOTE_ERROR", format!("{err:#}")));
+                    hooks::fire(HookEvent::TurnFailed, ctx, &extras, None);
+                }
             }
         }
         result
@@ -1143,7 +1152,12 @@ pub async fn run_repl_command(
                         abort_signal.clone(),
                     )
                     .await?;
-                    hooks::fire(HookEvent::SessionCompressed, ctx, &[], None);
+                    hooks::fire(
+                        HookEvent::SessionCompressed,
+                        ctx,
+                        &hooks::role_extras(ctx),
+                        None,
+                    );
                     println!("✓ Successfully compressed the session.");
                 }
                 _ => {
@@ -1697,7 +1711,12 @@ fn print_turn_divider() {
 
 async fn auto_compress_session(ctx: &mut RequestContext) {
     match ctx.compress_session().await {
-        Ok(()) => hooks::fire(HookEvent::SessionCompressed, ctx, &[], None),
+        Ok(()) => hooks::fire(
+            HookEvent::SessionCompressed,
+            ctx,
+            &hooks::role_extras(ctx),
+            None,
+        ),
         Err(err) => warn!("Failed to compress the session: {err}"),
     }
 }
@@ -2018,7 +2037,7 @@ pub fn split_args_text(line: &str, is_win: bool) -> (Vec<String>, &str) {
 mod tests {
     use super::*;
     use crate::client::{ClientConfig, Model};
-    use crate::config::{AppState, RoleLike, Session, WorkingMode};
+    use crate::config::{AppState, Role, RoleLike, Session, TEMP_ROLE_NAME, WorkingMode};
     use crate::hooks::{HookDef, HooksMap, test_sink};
     use anyhow::anyhow;
     use serial_test::serial;
@@ -2165,6 +2184,64 @@ mod tests {
         assert_eq!(turn_counts(marker), (1, 0, 1, 0));
     }
 
+    #[tokio::test]
+    #[serial]
+    async fn turn_events_carry_the_role_a_session_holds() {
+        let _sink = test_sink::install();
+        let marker = "tb-role-m3x";
+        let mut ctx = ctx_with_hooks(&TURN_EVENTS, marker);
+        // The role lives on the session (as after `.role` inside a session);
+        // fire-time resolution must find it there.
+        let mut session = Session::default();
+        session.set_role(Role::new("dev-role", "Prompt"));
+        ctx.session = Some(session);
+        let abort_signal = create_abort_signal();
+
+        let bracket = TurnBracket::enter(&ctx);
+        let result: Result<()> = Ok(());
+        bracket.finish(&ctx, &abort_signal, result).unwrap();
+
+        let captures: Vec<_> = test_sink::snapshot()
+            .into_iter()
+            .filter(|capture| capture.hook_name.starts_with(marker))
+            .collect();
+        assert_eq!(captures.len(), 2, "{captures:?}");
+        for capture in &captures {
+            assert_eq!(
+                capture.envs.get("COYOTE_ROLE").map(String::as_str),
+                Some("dev-role"),
+                "{} must carry the session-held role",
+                capture.hook_name
+            );
+        }
+    }
+
+    #[tokio::test]
+    #[serial]
+    async fn turn_events_omit_the_role_var_when_no_role_is_active() {
+        let _sink = test_sink::install();
+        let marker = "tb-norole-q8j";
+        let ctx = ctx_with_hooks(&TURN_EVENTS, marker);
+        let abort_signal = create_abort_signal();
+
+        let bracket = TurnBracket::enter(&ctx);
+        let result: Result<()> = Ok(());
+        bracket.finish(&ctx, &abort_signal, result).unwrap();
+
+        let captures: Vec<_> = test_sink::snapshot()
+            .into_iter()
+            .filter(|capture| capture.hook_name.starts_with(marker))
+            .collect();
+        assert_eq!(captures.len(), 2, "{captures:?}");
+        for capture in &captures {
+            assert!(
+                !capture.envs.contains_key("COYOTE_ROLE"),
+                "{} must omit COYOTE_ROLE without an active role",
+                capture.hook_name
+            );
+        }
+    }
+
     /// Drives a deep REPL future to completion on a thread with extra stack
     /// headroom: nested `run_repl_command`/`compress_session` poll frames
     /// are deep in debug builds and overflow the default test-thread stack
@@ -2312,6 +2389,48 @@ mod tests {
         );
     }
 
+    #[test]
+    #[serial]
+    fn session_compressed_carries_the_active_role_name() {
+        let _sink = test_sink::install();
+        let marker = "compress-role-t6b";
+        run_async(async {
+            let mut ctx = compressible_ctx(marker);
+            // A temp role (`--prompt`) is a real role for COYOTE_ROLE.
+            ctx.role = Some(Role::new(TEMP_ROLE_NAME, "Session role prompt"));
+            auto_compress_session(&mut ctx).await;
+        });
+
+        let capture = test_sink::snapshot()
+            .into_iter()
+            .find(|capture| capture.hook_name == format!("{marker}-session.compressed"))
+            .expect("session.compressed capture");
+        assert_eq!(
+            capture.envs.get("COYOTE_ROLE").map(String::as_str),
+            Some(TEMP_ROLE_NAME)
+        );
+    }
+
+    #[test]
+    #[serial]
+    fn session_compressed_omits_the_role_var_when_no_role_is_active() {
+        let _sink = test_sink::install();
+        let marker = "compress-norole-p9c";
+        run_async(async {
+            let mut ctx = compressible_ctx(marker);
+            auto_compress_session(&mut ctx).await;
+        });
+
+        let capture = test_sink::snapshot()
+            .into_iter()
+            .find(|capture| capture.hook_name == format!("{marker}-session.compressed"))
+            .expect("session.compressed capture");
+        assert!(
+            !capture.envs.contains_key("COYOTE_ROLE"),
+            "session.compressed must omit COYOTE_ROLE without an active role"
+        );
+    }
+
     #[test]
     #[serial]
     fn auto_compress_failure_fires_no_session_compressed_and_swallows_error() {