v0.51.75 — Release AY

Stage-368: 11-PR safe-lane batch + maintainer pytest-loop fix.

Composition

stage-368 maintainer fix — Permanent os.execv guard in tests/conftest.py to prevent pytest from self-looping on the _schedule_restart daemon thread. Tests in tests/test_update_banner_fixes.py exercise api.updates._schedule_restart(), which spawns a daemon thread that eventually calls os.execv(). Those tests monkeypatch os.execv for the test scope, but monkeypatch teardown can win the race against the daemon thread — the real os.execv is restored before the thread fires it, and the daemon re-execs the entire pytest process with the original argv. From the outside this looked like pytest hanging at 99% and then restarting the entire suite from 0% in an infinite loop. The fix shadows os.execv with a permanent no-op wrapper at conftest module-import time; tests that need to verify execv was called still patch it themselves. New tests/test_pytest_execv_guard.py pins the guard against future conftest refactors.

PR #2377 by @franksong2702 (refs #2283, refs #2363, refs #1925) — Run-journal replay timeline parity checks.

PR #2391 by @Michaelyklam (fixes #2389) — Reduce browser storage pressure: SW dual-cache window during version bumps + unbounded per-session localStorage map growth.
PR #2387 by @Michaelyklam (fixes #2386) — Guard localStorage.setItem('hermes-webui-session', ...) and workspace-panel writes with try/catch.
PR #2368 by @Michaelyklam — Hybridize background profile env routing: thread-local + os.environ.update mirror under narrow _ENV_LOCK.
PR #2382 by @Michaelyklam (fixes #2380) — Serve raw chat attachments from per-session inbox via api/file/raw with path-traversal guards intact.
PR #2385 by @franksong2702 — Keep fuller compression snapshots reachable in sidebar.
PR #2371 by @franksong2702 — Clarify interrupted turn recovery after WebUI restart.
PR #2378 by @Michaelyklam — Strip historical images in text-only mode via new cfg= kwarg on _sanitize_messages_for_api.
PR #2375 by @Michaelyklam — Keep Markdown tables block-level (add table to paragraph-wrap skip list).
PR #2372 by @mccxj — Settings → Conversation page action buttons respect locale selection.
PR #2381 by @Michaelyklam (fixes #2379) — German session-time labels now interpolate {n} correctly.

pytest: 5747 passed, 10 skipped, 1 xfailed, 2 xpassed, 8 subtests passed in 106.70s. EXIT=0. Single run, no self-loop.
Opus advisor: SHIP verdict. Risk areas A–G verified clean. No SHOULD-FIX items.
Production server health verified.

Complete #2297 coverage in _handle_chat_sync (api/routes.py:7871) — pass cfg=_cfg to _sanitize_messages_for_api in the fallback POST /api/chat path. ~2 LOC, fallback endpoint unused by frontend. Will be filed as follow-up issue.

v0.51.75 — Release AY (stage-368: 11-PR safe-lane batch + pytest-loop fix) by @nesquena-hermes in #2397
fix: hybridize background profile env routing by @Michaelyklam in #2368
Clarify interrupted turn recovery after WebUI restart by @franksong2702 in #2371
fix: add i18n support to settings conversation page action buttons by @mccxj in #2372
Add run-journal replay timeline parity checks by @franksong2702 in #2377
fix: strip historical images in text mode by @Michaelyklam in #2378
fix: interpolate German session time labels by @Michaelyklam in #2381
fix: serve raw chat attachments from inbox by @Michaelyklam in #2382
Keep fuller compression snapshots reachable in sidebar by @franksong2702 in #2385
fix: guard localStorage quota writes by @Michaelyklam in #2387
fix: reduce browser storage pressure by @Michaelyklam in #2391
fix: keep markdown tables block-level by @Michaelyklam in #2375

Full Changelog: v0.51.74...v0.51.75