Convert in-place pkg.__path__=[] mutations on the REAL agent/hermes_cli
packages to monkeypatch.setattr (auto-restored), and make
test_issue1574's _activate_spawn_fake_agent snapshot+restore the
HERMES_WEBUI_AGENT_DIR/PYTHONPATH/sys.path it mutates.
Fixes:
- test_v050259_sessiondb_fd_leak::test_session_db_close_is_idempotent
- test_tls_support::test_tls_startup_failure_fallback_to_http
## Release v0.51.263 — Release IE (stage-r13)
Batch 1 (fresh) — trimmed to the clean pair after the gate held two.
### Fixed
| Issue/PR | Author | Fix |
|----------|--------|-----|
| #3621 | @luanxu-dev | `/codex-runtime` + `/codex_runtime` now run as a WebUI slash command (routed through the executor reusing the agent's `codex_runtime_switch`) instead of being sent to the model as a chat message. |
### Tests
| Issue/PR | Author | Change |
|----------|--------|--------|
| #3595 | @rodboev | Regression coverage for the already-shipped `activity_feed_expanded_default` setting. |
### Held back from this batch (Codex regression gate)
- **#3624** (passkey-challenge cap, security) — the cap **raises** `PasskeyRateLimitError` when full instead of **evicting oldest**, so an attacker (or 8 abandoned legit attempts per context) can lock out genuine registration/login until TTL — the protection becomes a lockout DoS. Held with the oldest-first-eviction fix.
- **#3618** (prefer server-side STT) — forcing MediaRecorder by default breaks browser `SpeechRecognition` dictation on installs with **no** server STT configured (`_transcribeBlob` only toasts on failure, never falls back). Held with the graceful-fallback fix.
### Gate
- Full pytest suite: **7714 passed, 0 failed**
- ESLint: CLEAN · ruff: CLEAN
- Codex (regression): SHIP-ONLY-WITH-FIXES (#3624 DoS-lockout + #3618 STT-no-fallback) → both dropped/held → **SAFE TO SHIP** (verified no passkeys.py/boot.js remnants, codex-runtime dispatch reaches the allowlist).
Co-authored-by: luanxu-dev <luanxu-dev@users.noreply.github.com>
Co-authored-by: rodboev <rodboev@users.noreply.github.com>
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