chore(release): stamp v0.50.294 — 3-PR batch + Opus pass

Constituent PRs:
  #1631 by @nesquena-hermes — streaming stability trio (closes #1623, #1624, #1625)
  #1635 by @bergeouss — session list race + readonly fs guard (closes #1430, #1470)
  #1636 by @nesquena-hermes — models cache version stamp (closes #1633)

Opus advisor SHIP verdict on stage-294 (combined diff). All 9 verification
questions cleared. Two #1636 minor observations absorbed in-release:
- DEBUG logger calls in _is_loadable_disk_cache when rejecting
- Docstring clarification on string-vs-semver and schema-version axis

#1631 in-PR Opus pass already absorbed: rate-limited telemetry,
expanded _LOCAL_SERVER_PROVIDERS, RFC1918 CHANGELOG callout.

4180 → 4245 tests passing (+65).

CHANGELOG.md

@@ -20,7 +20,7 @@
 
 ### Tests
 
-4180 → **4271 passing** (+91 regression tests across `tests/test_issue1623_sse_heartbeat_alignment.py` (3), `tests/test_issue1624_repair_stale_pending_grace.py` (9), `tests/test_issue1625_local_server_model_id_preservation.py` (34, expanded for `lm-studio`/`localai`), `tests/test_issue1633_models_cache_version_stamp.py` (19); plus `tests/test_model_resolver.py` updates and `tests/test_model_cache_metadata.py` round-trip semantics). 0 regressions. Full suite ~120s.
+4180 → **4245 passing** (+65 regression tests across `tests/test_issue1623_sse_heartbeat_alignment.py` (3), `tests/test_issue1624_repair_stale_pending_grace.py` (9), `tests/test_issue1625_local_server_model_id_preservation.py` (34, expanded for `lm-studio`/`localai`), `tests/test_issue1633_models_cache_version_stamp.py` (19); plus `tests/test_model_resolver.py` updates and `tests/test_model_cache_metadata.py` round-trip semantics). 0 regressions. Full suite ~120s.
 
 ### Pre-release verification
 

ROADMAP.md

@@ -2,7 +2,7 @@
 
 > Web companion to the Hermes Agent CLI. Same workflows, browser-native.
 >
-> Last updated: v0.50.293 (May 04, 2026) — 4180 tests collected
+> Last updated: v0.50.294 (May 04, 2026) — 4245 tests collected
 > Test source: `pytest tests/ --collect-only -q`
 > Per-version detail: see [CHANGELOG.md](./CHANGELOG.md)
 

TESTING.md

@@ -1835,8 +1835,8 @@ Bridged CLI sessions:
 
 ---
 
-*Last updated: v0.50.293, May 04, 2026*
+*Last updated: v0.50.294, May 04, 2026*
-*Total automated tests collected: 4180*
+*Total automated tests collected: 4245*
 *Regression gate: tests/test_regressions.py*
 *Run: pytest tests/ -v --timeout=60*
 *Source: <repo>/*