* fix(sessions): surface gateway SSE failures and add polling fallback
- add a JSON probe mode for the gateway SSE endpoint
- detect watcher-unavailable 503s from the browser
- fall back to periodic session refresh with a toast
- add probe payload tests and endpoint coverage
Fixes#635
* fix(sessions): surface gateway SSE failures and add polling fallback (#826)
Absorbed from PR #826 by @cloudyun888 (fixes#635).
When the gateway watcher thread is not running, the browser now shows a
toast notification and falls back to 30-second periodic polling for session
sync. Previously the SSE failure was completely silent with no user feedback.
Changes from original PR:
- Deleted misplaced test_gateway_sse_probe_unit.py (was at repo root, not
discovered by `pytest tests/`); unit tests moved into tests/test_gateway_sync.py
- _gateway_sse_probe_payload now checks watcher._thread.is_alive() rather
than just watcher is not None — a watcher instance with a dead poll thread
now correctly reports unavailable and activates the polling fallback
- probeGatewaySSEStatus catch(e) now starts the polling fallback on network
error rather than silently swallowing the failure
- Added 5 unit tests covering all watcher-alive/dead/missing/disabled branches
Co-authored-by: cloudyun888 <269269188+86cloudyun-afk@users.noreply.github.com>
* cleanup(gateway): public is_alive() + dedup probe/live watcher-alive check + changelog
Three small cleanups on top of @cloudyun888's PR #826 absorption:
1. Add GatewayWatcher.is_alive() public accessor so routes.py doesn't
reach into the private _thread attribute. The existing private-
attribute check stays as a defensive fallback for any older in-
memory instance or test double that doesn't implement the full API.
2. Dedupe the watcher_alive computation in _handle_gateway_sse_stream:
the live-SSE path now calls _gateway_sse_probe_payload(...) and reads
its watcher_running field instead of re-deriving the same logic
inline. Keeps probe and SSE in sync automatically.
3. CHANGELOG trailer was (#826, fixes#635, @cloudyun888) — this PR is
#828, so updated to (#828, absorbs PR #826 by @cloudyun888, fixes
#635) matching the repo convention for absorbed PRs (see #805).
Added two regression tests:
- test_gateway_watcher_is_alive_public_method — covers the three
lifecycle states (before start, while running, after stop).
- test_probe_payload_prefers_public_is_alive — asserts the probe
uses watcher.is_alive() rather than poking _thread when the
public method exists.
Full suite: 1735 passed, 0 new failures.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: cloudyun888 <269269188+86cloudyun-afk@users.noreply.github.com>
Co-authored-by: nesquena-hermes <nesquena-hermes@users.noreply.github.com>
Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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