* refactor(hooks): consolidate PostToolUse hooks into sync/async dispatchers
Replace 10 individual PostToolUse entries in hooks.json with two
consolidated dispatcher entries (post:dispatcher:sync /
post:dispatcher:async). The dispatcher's internal registry preserves
every hook ID, matcher, and profile, so ECC_DISABLED_HOOKS and
ECC_HOOK_PROFILE gating behave exactly as before.
Performance (Edit event, actual hooks.json commands spawned in
parallel like the harness does, median of 7 runs):
- Blocking hook latency: 81ms -> 49ms (~40% faster; 7 blocking
processes -> 1 sync dispatcher)
- Node processes per tool call: 10 -> 2 (7 blocking + 3 async
-> 1 sync + 1 async)
- observe-runner now runs in-process (~370ms) inside the async
dispatcher, which stays backgrounded (async: true, timeout 45s),
so it adds no user-facing latency.
Also:
- dashboard-web lists dispatcher-managed child hooks so the hook
inventory stays complete
- post-edit-console-warn refactored to export run() for in-process
dispatch while keeping standalone stdin behavior
- dispatcher stdin reading is multi-byte safe (StringDecoder) and
child hook exit codes propagate to the dispatcher exit code
* test(hooks): replace emoji literal with unicode escape for CI unicode safety check
* fix(hooks): adopt explicit cli() entrypoint and merge multi-hook stdout
Address Greptile review on #2494:
- Replace the non-standard 'require.main === undefined' guard with an
explicit exported cli(). The hooks.json bootstraps now call
require(s).cli(), so merely requiring the module (dashboard-web,
test runners, Jest, worker threads) can never trigger dispatch,
attach stdin listeners, or set process.exitCode.
- Replace last-writer-wins stdout with mergeHookStdout(): when several
hooks emit additionalContext envelopes they merge into a single
PostToolUse envelope; non-mergeable raw stdout keeps the last hook's
output and emits a stderr warning naming the dropped hook IDs, so
nothing is lost silently.
Also includes local formatter reformatting of the dispatcher and its
test file (no behavioral changes beyond the above).
* fix(hooks): keep post:bash:dispatcher phase reachable in minimal profile
The Greptile P1 premise was partially incorrect: sub-hooks without
explicit profiles default to standard,strict via parseProfiles()
(scripts/lib/hook-flags.js), so audit/cost logs never ran under the
minimal profile on main either — there is no user-visible regression.
However, main did spawn the bash dispatcher phase unconditionally and
let each sub-hook gate itself. Restore that semantic by opening the
outer registry gate to minimal,standard,strict so a future sub-hook
that opts into minimal is not silently blocked at the phase level.
Adds the previously missing minimal-profile async dry-run test.
* test(hooks): assert failing hook exit code propagates to real process status
Spawns the actual dispatcher subprocess with an injected failing hook
and asserts the OS-level exit status, stderr diagnostic, and suppressed
pass-through — closing the E2E gap CodeRabbit flagged on #2494.
* chore: retrigger CI (flaky windows powershell bootstrap test)
Replace console.log(data) with process.stdout.write(data) in both
pass-through paths to prevent appending a trailing newline that
corrupts the hook output. Add 7 tests covering exact byte fidelity,
malformed JSON, missing file_path, non-existent files, exclusion
patterns in check-console-log, non-git repo handling, and empty stdin.
- Replace raw fs.readFileSync with readFile() from utils in
check-console-log.js and post-edit-console-warn.js to eliminate
TOCTOU race conditions (file deleted between existsSync and read)
- Remove redundant existsSync in post-edit-format.js (exec already
handles missing files via its catch block)
- Resolve path upfront in post-edit-typecheck.js before tsconfig walk
- Add type guard in getGitModifiedFiles() to skip non-string and
empty patterns before regex compilation
Core library fixes:
- session-manager.js: wrap all statSync calls in try-catch to prevent
TOCTOU crashes when files are deleted between readdir and stat
- session-manager.js: use birthtime||ctime fallback for Linux compat
- session-manager.js: remove redundant existsSync before readFile
- utils.js: fix findFiles TOCTOU race on statSync inside readdir loop
Hook improvements:
- Add 1MB stdin buffer limits to all PostToolUse hooks to prevent
unbounded memory growth from large payloads
- suggest-compact.js: use fd-based atomic read+write for counter file
to reduce race window between concurrent invocations
- session-end.js: log when transcript file is missing, check
replaceInFile return value for failed timestamp updates
- start-observer.sh: log claude CLI failures instead of silently
swallowing them, check observations file exists before analysis
Test fixes:
- Fix blocking hook tests to send matching input (dev server command)
and expect correct exit code 2 instead of 1
Move three complex inline hooks from hooks.json into proper external
scripts in scripts/hooks/:
- post-edit-format.js: Prettier auto-formatting (was 1 minified line)
- post-edit-typecheck.js: TypeScript check (was 1 minified line with
unbounded directory traversal, now capped at 20 levels)
- post-edit-console-warn.js: console.log warnings (was 1 minified line)
Benefits:
- Readable, documented, and properly error-handled
- Testable independently via stdin
- Consistent with other hooks (all use external scripts now)
- Adds timeouts to Prettier (15s) and tsc (30s) to prevent hangs
