fix: Issue Blowout 2026 — 25 bugs across worker, hooks, security, and search (#2080)

* fix: resolve search, database, and docker bugs (#1913, #1916, #1956, #1957, #2048)

- Fix concept/concepts param mismatch in SearchManager.normalizeParams (#1916)
- Add FTS5 keyword fallback when ChromaDB is unavailable (#1913, #2048)
- Add periodic WAL checkpoint and journal_size_limit to prevent unbounded WAL growth (#1956)
- Add periodic clearFailed() to purge stale pending_messages (#1957)
- Fix nounset-safe TTY_ARGS expansion in docker/claude-mem/run.sh

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: prevent silent data loss on non-XML responses, add queue info to /health (#1867, #1874)

- ResponseProcessor: mark messages as failed (with retry) instead of confirming
  when the LLM returns non-XML garbage (auth errors, rate limits) (#1874)
- Health endpoint: include activeSessions count for queue liveness monitoring (#1867)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: cache isFts5Available() at construction time

Addresses Greptile review: avoid DDL probe (CREATE + DROP) on every text
query. Result is now cached in _fts5Available at construction.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: resolve worker stability bugs — pool deadlock, MCP loopback, restart guard (#1868, #1876, #2053)

- Replace flat consecutiveRestarts counter with time-windowed RestartGuard:
  only counts restarts within 60s window (cap=10), decays after 5min of
  success. Prevents stranding pending messages on long-running sessions. (#2053)

- Add idle session eviction to pool slot allocation: when all slots are full,
  evict the idlest session (no pending work, oldest activity) to free a slot
  for new requests, preventing 60s timeout deadlock. (#1868)

- Fix MCP loopback self-check: use process.execPath instead of bare 'node'
  which fails on non-interactive PATH. Fix crash misclassification by removing
  false "Generator exited unexpectedly" error log on normal completion. (#1876)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: resolve hooks reliability bugs — summarize exit code, session-init health wait (#1896, #1901, #1903, #1907)

- Wrap summarize hook's workerHttpRequest in try/catch to prevent exit
  code 2 (blocking error) on network failures or malformed responses.
  Session exit no longer blocks on worker errors. (#1901)

- Add health-check wait loop to UserPromptSubmit session-init command in
  hooks.json. On Linux/WSL where hook ordering fires UserPromptSubmit
  before SessionStart, session-init now waits up to 10s for worker health
  before proceeding. Also wrap session-init HTTP call in try/catch. (#1907)

- Close #1896 as already-fixed: mtime comparison at file-context.ts:255-267
  bypasses truncation when file is newer than latest observation.

- Close #1903 as no-repro: hooks.json correctly declares all hook events.
  Issue was Claude Code 12.0.1/macOS platform event-dispatch bug.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: security hardening — bearer auth, path validation, rate limits, per-user port (#1932, #1933, #1934, #1935, #1936)

- Add bearer token auth to all API endpoints: auto-generated 32-byte
  token stored at ~/.claude-mem/worker-auth-token (mode 0600). All hook,
  MCP, viewer, and OpenCode requests include Authorization header.
  Health/readiness endpoints exempt for polling. (#1932, #1933)

- Add path traversal protection: watch.context.path validated against
  project root and ~/.claude-mem/ before write. Rejects ../../../etc
  style attacks. (#1934)

- Reduce JSON body limit from 50MB to 5MB. Add in-memory rate limiter
  (300 req/min/IP) to prevent abuse. (#1935)

- Derive default worker port from UID (37700 + uid%100) to prevent
  cross-user data leakage on multi-user macOS. Windows falls back to
  37777. Shell hooks use same formula via id -u. (#1936)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: resolve search project filtering and import Chroma sync (#1911, #1912, #1914, #1918)

- Fix per-type search endpoints to pass project filter to Chroma queries
  and SQLite hydration. searchObservations/Sessions/UserPrompts now use
  $or clause matching project + merged_into_project. (#1912)

- Fix timeline/search methods to pass project to Chroma anchor queries.
  Prevents cross-project result leakage when project param omitted. (#1911)

- Sync imported observations to ChromaDB after FTS rebuild. Import
  endpoint now calls chromaSync.syncObservation() for each imported
  row, making them visible to MCP search(). (#1914)

- Fix session-init cwd fallback to match context.ts (process.cwd()).
  Prevents project key mismatch that caused "no previous sessions"
  on fresh sessions. (#1918)

- Fix sync-marketplace restart to include auth token and per-user port.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: resolve all CodeRabbit and Greptile review comments on PR #2080

- Fix run.sh comment mismatch (no-op flag vs empty array)
- Gate session-init on health check success (prevent running when worker unreachable)
- Fix date_desc ordering ignored in FTS session search
- Age-scope failed message purge (1h retention) instead of clearing all
- Anchor RestartGuard decay to real successes (null init, not Date.now())
- Add recordSuccess() calls in ResponseProcessor and completion path
- Prevent caller headers from overriding bearer auth token
- Add lazy cleanup for rate limiter map to prevent unbounded growth
- Bound post-import Chroma sync with concurrency limit of 8
- Add doc_type:'observation' filter to Chroma queries feeding observation hydration
- Add FTS fallback to all specialized search handlers (observations, sessions, prompts, timeline)
- Add response.ok check and error handling in viewer saveSettings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: resolve CodeRabbit round-2 review comments

- Use failure timestamp (COALESCE) instead of created_at_epoch for stale purge
- Downgrade _fts5Available flag when FTS table creation fails
- Escape FTS5 MATCH input by quoting user queries as literal phrases
- Escape LIKE metacharacters (%, _, \) in prompt text search
- Add response.ok check in initial settings load (matches save flow)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: resolve CodeRabbit round-3 review comments

- Include failed_at_epoch in COALESCE for age-scoped purge
- Re-throw FTS5 errors so callers can distinguish failure from no-results
- Wrap all FTS fallback calls in SearchManager with try/catch

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/services/transcripts/processor.ts

@@ -1,8 +1,10 @@
+import path from 'path';
 import { sessionInitHandler } from '../../cli/handlers/session-init.js';
 import { observationHandler } from '../../cli/handlers/observation.js';
 import { fileEditHandler } from '../../cli/handlers/file-edit.js';
 import { sessionCompleteHandler } from '../../cli/handlers/session-complete.js';
 import { ensureWorkerRunning, workerHttpRequest } from '../../shared/worker-utils.js';
+import { DATA_DIR } from '../../shared/paths.js';
 import { logger } from '../../utils/logger.js';
 import { getProjectContext } from '../../utils/project-name.js';
 import { writeAgentsMd } from '../../utils/agents-md-utils.js';
@@ -357,6 +359,19 @@ export class TranscriptEventProcessor {
     const contextUrl = `/api/context/inject?projects=${encodeURIComponent(projectsParam)}&platformSource=${encodeURIComponent(session.platformSource)}`;
     const agentsPath = expandHomePath(watch.context.path ?? `${cwd}/AGENTS.md`);
 
+    // Validate resolved path stays within allowed directories (#1934)
+    const resolvedAgentsPath = path.resolve(agentsPath);
+    const allowedRoots = [path.resolve(cwd), path.resolve(DATA_DIR)];
+    const isPathSafe = allowedRoots.some(root => resolvedAgentsPath.startsWith(root + path.sep) || resolvedAgentsPath === root);
+    if (!isPathSafe) {
+      logger.warn('SECURITY', 'Rejected path traversal attempt in watch.context.path', {
+        original: watch.context.path,
+        resolved: resolvedAgentsPath,
+        allowedRoots
+      });
+      return;
+    }
+
     let response: Awaited<ReturnType<typeof workerHttpRequest>>;
     try {
       response = await workerHttpRequest(contextUrl);