Release v3.8.7 (#2919)

* feat(plugins): WordPress-style plugin system backend

* fix(plugins): address code review feedback

- Path traversal guard: validate entryPoint stays within plugin dir
- install() now handles direct plugin directories (not just parent dirs)
- Non-null assertion replaced with explicit null check
- require efficiency: allowedModules map moved outside function
- Source wrapper: add newlines to prevent trailing comment issues
- Config validation: validate values against configSchema on save
- Dynamic import comment: clarify Node.js caching behavior

Co-Authored-By: OpenClaude (mimo-v2.5-pro) <openclaude@gitlawb.com>

* fix(plugins): replace vm with child_process, add auth to all routes

Addresses all remaining code review feedback:

1. **Loader rewrite**: Replaced Node.js vm module with child_process.fork()
   for proper process-level isolation. Complies with Rule 3 (no eval).
   Each plugin runs in a separate Node.js process with IPC communication.

2. **Auth on all routes**: Added requireManagementAuth to all 6 plugin
   API route files (list, install, scan, details, activate, deactivate, config).

3. **Env filtering**: Only safe env vars passed to plugin processes unless
   "env" permission is granted.

Co-Authored-By: OpenClaude (mimo-v2.5-pro) <openclaude@gitlawb.com>

* fix(plugins): security + ESM fixes for loader and manager

loader.ts:
- Fix IPC: use process.send()/process.on("message") instead of worker_threads.parentPort
- Fix ESM: write host script as .mjs (not .js) to force ESM execution
- Add timeout: 10s default on callHook() with Promise.race
- Add SIGKILL escalation: SIGTERM first, then SIGKILL after 3s grace
- Fix env filtering: use allowlist (safeKeys) instead of passing all env vars
- Clear timeout on successful IPC response (no timer leak)

manager.ts:
- Fix path traversal: use fs.realpath() instead of startsWith()
- Fix imports: use registerHook/unregisterHooks from hooks.ts
- Register hooks individually via registerHook(event, name, handler)

hooks.ts:
- Copied from feat/plugin-custom-hooks (canonical registry)

* feat(discovery): add discovery tool stub service

Phase 1 scaffold for automated provider discovery:
- DiscoveryConfig, DiscoveryResult types
- probeEndpoint() for URL availability checking
- scanProvider() stub (Phase 2 will implement real scanning)
- getDiscoveryResults() stub
- Default config: disabled (opt-in)

* chore(plugins): slop cleanup — pino logger, remove redundant sorts

- index.ts: replace console.log/error with pino structured logging
- hooks.ts: remove redundant .sort() in emitHookBlocking/runOnResponse (already sorted on registration)
- manager.ts: add readFile import

* test(plugins): add scanner, loader, manager unit tests

- scanner: 9 tests (discovery, hidden dirs, validation, entry point, multiple)
- loader: 5 tests (type contracts, Plugin/PluginContext/PluginResult interfaces)
- manager: 6 tests (singleton, lifecycle methods, error on unknown)
- Total: 20 tests, all passing

* fix(settings): add missing home page pin keys to updateSettingsSchema

* feat(plugins): add i18n keys to all 42 locales

* fix(settings): add missing security keys to updateSettingsSchema and add tests

* fix(usage): analytics route reads combo_name/requested_model from call_logs only

The 3.8.6 variant of #2904 added SELECTs of combo_name/requested_model
against usage_history, but those columns only exist in call_logs (no
migration adds them to usage_history). This returned HTTP 500 on
/api/usage/analytics. Restore the working query shape from the 3.8.7
variant. Fixes 18 failing usage-analytics-route tests.

* fix(types,test): resolve noImplicitAny in progressiveAging + align semaphore test to #2903 gate pruning

- progressiveAging: type compression results so messages[0].content is
  indexable (was TS7053 against {}); restores typecheck:noimplicit:core gate.
- services-branch-hardening: #2903 (perf-ram) prunes idle rate-limit gates
  on zero; assert no-running/empty-queue without assuming the entry persists.

* fix(analytics): address merged review regressions

* fix(executor): normalize max effort for openai shape providers

* Make zero-latency combo optimizations opt-in

* Address zero-latency combo review feedback

* chore(release): sync v3.8.7 touchpoints + credit contributors

- llm.txt → 3.8.7 (Current version + Key Features header)
- CHANGELOG: add Dmitry Kuznetsov & Nikolay Alafuzov to 3.8.6 Hall of Contributors
- version already 3.8.7 across package.json/open-sse/electron/openapi (from #2909)

* fix(cleanup): restore usage history cutoff boundary

* docs(changelog): rank 3.8.6 contributors in a commits table with their PRs

* fix(dashboard): theme ReactFlow Controls +/- buttons for dark mode

* fix(settings): add missing home page pin keys to updateSettingsSchema

* fix(settings): add missing security keys to updateSettingsSchema and add tests

* fix(executor): normalize max effort for openai shape providers

* Make zero-latency combo optimizations opt-in

* Address zero-latency combo review feedback

* fix(analytics): address merged review regressions

* fix(cleanup): restore usage history cutoff boundary

* feat(plugins): WordPress-style plugin system backend

* fix(plugins): address code review feedback

- Path traversal guard: validate entryPoint stays within plugin dir
- install() now handles direct plugin directories (not just parent dirs)
- Non-null assertion replaced with explicit null check
- require efficiency: allowedModules map moved outside function
- Source wrapper: add newlines to prevent trailing comment issues
- Config validation: validate values against configSchema on save
- Dynamic import comment: clarify Node.js caching behavior

Co-Authored-By: OpenClaude (mimo-v2.5-pro) <openclaude@gitlawb.com>

* fix(plugins): replace vm with child_process, add auth to all routes

Addresses all remaining code review feedback:

1. **Loader rewrite**: Replaced Node.js vm module with child_process.fork()
   for proper process-level isolation. Complies with Rule 3 (no eval).
   Each plugin runs in a separate Node.js process with IPC communication.

2. **Auth on all routes**: Added requireManagementAuth to all 6 plugin
   API route files (list, install, scan, details, activate, deactivate, config).

3. **Env filtering**: Only safe env vars passed to plugin processes unless
   "env" permission is granted.

Co-Authored-By: OpenClaude (mimo-v2.5-pro) <openclaude@gitlawb.com>

* fix(plugins): security + ESM fixes for loader and manager

loader.ts:
- Fix IPC: use process.send()/process.on("message") instead of worker_threads.parentPort
- Fix ESM: write host script as .mjs (not .js) to force ESM execution
- Add timeout: 10s default on callHook() with Promise.race
- Add SIGKILL escalation: SIGTERM first, then SIGKILL after 3s grace
- Fix env filtering: use allowlist (safeKeys) instead of passing all env vars
- Clear timeout on successful IPC response (no timer leak)

manager.ts:
- Fix path traversal: use fs.realpath() instead of startsWith()
- Fix imports: use registerHook/unregisterHooks from hooks.ts
- Register hooks individually via registerHook(event, name, handler)

hooks.ts:
- Copied from feat/plugin-custom-hooks (canonical registry)

* feat(discovery): add discovery tool stub service

Phase 1 scaffold for automated provider discovery:
- DiscoveryConfig, DiscoveryResult types
- probeEndpoint() for URL availability checking
- scanProvider() stub (Phase 2 will implement real scanning)
- getDiscoveryResults() stub
- Default config: disabled (opt-in)

* chore(plugins): slop cleanup — pino logger, remove redundant sorts

- index.ts: replace console.log/error with pino structured logging
- hooks.ts: remove redundant .sort() in emitHookBlocking/runOnResponse (already sorted on registration)
- manager.ts: add readFile import

* test(plugins): add scanner, loader, manager unit tests

- scanner: 9 tests (discovery, hidden dirs, validation, entry point, multiple)
- loader: 5 tests (type contracts, Plugin/PluginContext/PluginResult interfaces)
- manager: 6 tests (singleton, lifecycle methods, error on unknown)
- Total: 20 tests, all passing

* feat(plugins): add i18n keys to all 42 locales

* chore(plugins): remove duplicate migration 059_create_plugins.sql

* chore(plugins): remove duplicate migration 059_create_plugins.sql (post-merge)

* fix(sse): guard non-string error.code in proxyFetch + harden model parsing (#2463) (#2923)

Integrated into release/v3.8.7

* fix(docker): add runner-web stage with Playwright Chromium (#2832) (#2846)

Integrated into release/v3.8.7

* docs(changelog): document NVIDIA NIM and error code type-crash fix (#2463)

* test: ignore NVIDIA_BASE_URL and NVIDIA_MODEL in env contract check

---------

Co-authored-by: oyi77 <oyi77@users.noreply.github.com>
Co-authored-by: OpenClaude (mimo-v2.5-pro) <openclaude@gitlawb.com>
Co-authored-by: Apostol Apostolov <theapoapostolov@gmail.com>
Co-authored-by: Halil Tezcan KARABULUT <info@hlltzcnkb.com>
Co-authored-by: R.D. <rogerproself@gmail.com>

docs/guides/USER_GUIDE.md

@@ -981,6 +981,12 @@ Combo target timeouts inherit the current request timeout by default. Use **Targ
 (seconds)** on combo defaults or an individual combo only when a shorter per-target limit should
 trigger faster fallback.
 
+Zero-latency combo optimizations are opt-in. Leave **Zero-latency optimizations** disabled to
+prevent these latency features from racing fallback targets, skipping targets based on TTFT
+history, or compressing fallback requests; enabling it allows configured hedging, predictive TTFT
+skips, and proactive fallback compression to trade routing/request fidelity for lower tail
+latency.
+
 ---
 
 ### Health Dashboard