nesquena APPROVED 2026-05-22. Cherry-picked onto post-v0.51.127
master via 3-way apply. Resolved api/routes.py conflict: master had
the inline correctness fix from the deep-review iteration; PR
refactors it into _metadata_only_message_summary() helper. Took the
helper AND added profile= threading (post-#2827 master adds
profile-aware state.db reads). Kept master's pre-existing
test_api_session_reload_drops_stale_cached_user_tail_after_saved_assistant
alongside the PR's new test_metadata_fast_path_matches_reconciliation_for_restamped_replays.
Co-authored-by: dobby-d-elf <dobby.the.agent@gmail.com>
Two bugs combined to cause historical messages to vanish from the WebUI
after a session was continued in a later conversation.
**Bug 1 — missing `id` in state.db SELECT (models.py)**
`get_state_db_session_messages()` did not include the `id` column in its
SELECT, so every row got a `("legacy", ...)` merge key instead of
`("message_id", ...)`. The timestamp gate in
`merge_session_messages_append_only()` explicitly exempts `message_id`-keyed
rows from its "skip if older than newest sidecar message" rule, but
legacy-keyed rows are unconditionally dropped. With a session that has any
new sidecar messages (max_sidecar_timestamp == today), all older state.db
rows were silently discarded.
Fix: include `id` when the column is present so rows get proper
`("message_id", ...)` keys and survive the timestamp filter.
**Bug 2 — always reads active profile's state.db, not the session's (models.py + routes.py)**
`get_state_db_session_messages()` always called `_active_state_db_path()`,
which returns the currently-active profile's database. Sessions belonging to
a different profile (e.g. `jump`) were read from the wrong state.db, returning
either no rows or unrelated ones.
Fix: add an optional `profile` parameter; when supplied, resolve the path via
`_get_profile_home(profile)` with a fallback to the active path if the
profile-specific db does not exist. The call-site in `routes.py` now reads
`session.profile` and passes it through.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
When display.personality is set in config.yaml (e.g. personality: taleb),
new sessions now inherit it automatically instead of starting with
personality=None and requiring an explicit /personality command.
This makes the selected personality sticky across new conversations rather
than requiring per-session activation.
Behavior:
- display.personality values 'none', 'default', 'neutral', '' are treated
as no personality (personality=None), matching TUI gateway semantics.
- Config read is wrapped in try/except — if it fails, personality falls
back to None (no crash, no regression).
- Case-insensitive: 'Taleb' normalizes to 'taleb'.
The /personality slash command still works for per-session overrides as
before; this change only affects the initial default.
Two functions on the /api/session/handoff-summary hot path were opening
sqlite3.connect(...) inside a bare `with` statement, which commits the
transaction at scope exit but does NOT close the connection. Per-turn
invocations accumulated state.db / state.db-wal file descriptors and
CPython heap pages on long-lived worker threads, surfacing as the
multi-GB VmRSS and 6x duplicated state.db fds observed on the live
instance (D0 pre-restart baseline: VmRSS 1,334,248 kB, 55 fds; cold
baseline after restart: VmRSS 136,668 kB, 10 fds).
Wrap both call sites with contextlib.closing(...) (already imported and
used at seven other sites in the same files) so the connection is
closed deterministically:
- api/models.py :: count_conversation_rounds
- api/routes.py :: _persist_handoff_summary_to_state_db
Regression test:
tests/test_issue2233_sqlite_connection_leak.py loops both functions
20 times against a tmp state.db and asserts /proc/<pid>/fd count
does not grow more than 2. Linux-only via sys.platform skip.
D1 live soak against a freshly-built worktree server (port 8799,
isolated HERMES_HOME / HERMES_WEBUI_STATE_DIR) hitting
/api/session/handoff-summary 20 times:
fd_before = 5
fd_after = 5 (growth 0, threshold < 5)
vmrss_before = 52636 kB
vmrss_after = 52636 kB (growth 0 kB, threshold < 30 MB)
The patched fix curve trends below the leak curve.
Rollback: single git revert <this-sha> reverts both file edits.
Refs #2233.
The full rebuild path scans SESSION_DIR via glob('*.json') and appends every loaded session to a plain list without deduplicating by session_id. When old-format session_*.json files coexist alongside WebUI-format xxx.json files (both sharing session_id), the index gets duplicate entries, causing frontend Vue key crashes.
Fix: use dict[session_id -> compact_entry] to naturally deduplicate.
The full rebuild path of _write_session_index scans SESSION_DIR via
glob('*.json') and appends every loaded session to a plain list without
deduplicating by session_id. When old-format session_*.json files coexist
alongside WebUI-format xxx.json files (both sharing the same session_id),
the same session appears multiple times in the index, causing frontend
Vue key collisions and a blank page.
Fix: use dict[session_id -> compact_entry] to naturally deduplicate.
Prefer the entry with the larger message_count when conflicts arise.
The _normalized_message_timestamp_for_key helper was preserving
microsecond precision (%.6f). When the same message is persisted by
both the WebUI sidecar JSON writer and the Hermes agent state.db
writer, their timestamps can differ by a few microseconds, causing
_session_message_merge_key to produce different keys for the same
logical message and letting both copies survive the dedup pass in
merge_session_messages_append_only.
Truncating to second-level granularity collapses sub-second drift to
the same key, so the duplicate is suppressed correctly.
Fixes#2616
Four code-review comments from the automated Copilot reviewer on this PR:
1. `_journal_tool_already_present` dedupe was session-wide, so a
legitimately-repeated tool (e.g. a second `terminal: ls` in an
earlier turn) could cause the retry path to falsely skip
materializing the recovered tool card. The helper now takes a
keyword `stream_id` argument; when supplied, a tool card whose
`_recovered_stream_id` is set AND differs from the candidate is no
longer treated as a duplicate. Untagged tool cards (live tools, or
tool cards carried over from a pre-tagging core transcript) still
match, preserving the existing 'core transcript already has this
tool, don't duplicate' invariant. Two new tests in
`TestJournalToolDedupeScoping` cover both legs of the rule.
2./3. The troubleshooting FAQ pointed at `~/.hermes/webui/sessions/session_<sid>.json`
and `~/.hermes/_run_journal/...`. The actual sidecar filename has
no `session_` prefix and the run-journal lives under the WebUI
sessions dir (`~/.hermes/webui/sessions/_run_journal/<sid>/<stream>.jsonl`,
default). Both paths fixed and an explicit note added about
`HERMES_WEBUI_STATE_DIR` overriding the state root.
4. Drop unused `json` / `queue` / `Path` imports from
`tests/test_session_lost_response_regression.py` so the file stops
carrying noise that future linting would flag.
When the WebUI process restarts mid-stream and sidecar repair runs while
the run-journal for the dead stream is not yet visible on disk (WSL2 9p
/ DrvFs page-cache loss, un-fsynced journal tail on network FS, …),
`_append_journaled_partial_output()` returns False and the marker is
permanently baked with the "no agent output was recovered" wording even
though the journaled tokens appear on disk shortly afterwards.
This commit reframes the recovery contract so the read side can
self-heal:
* `_interrupted_recovery_marker` gains a `pending_retry=True` mode
that produces a third wording ("Recovering the partial output …
reload this session to retry.") and stamps a
`_pending_journal_recovery` flag.
* `_apply_core_sync_or_error_marker` now writes that pending-retry
marker (with `_journal_retry_stream_id`,
`_journal_retry_attempts`, `_journal_retry_first_seen_ts` meta)
whenever it cannot recover visible output AND the stream id is
known. The legacy "no output" wording is reserved for the
no-stream-id case. The core-sync branch leaves marker emission to
the existing visible-output check (the core transcript itself is the
canonical history in that branch).
* A new `_retry_journal_recovery_in_place(session)` helper re-runs
`_append_journaled_partial_output(…, dedupe_existing=True)` for the
latest pending marker. On success the marker is promoted in place to
the recovered-output wording, the journaled rows are reordered to
sit above the marker (preserving chronological order), and all
retry meta is stripped. On failure attempts is incremented; after
_JOURNAL_RETRY_MAX_ATTEMPTS (12) or _JOURNAL_RETRY_GIVEUP_SECONDS
(24h) the marker is demoted to a neutral "Partial output may have
been lost." wording.
* `get_session()` cheaply short-circuits via
`_session_has_pending_journal_retry()` and invokes the helper on
both cache-hit and cold-load paths when a pending marker is found.
`metadata_only=True` skips the helper to keep sidebar refresh
cheap. The retry call runs OUTSIDE the SESSIONS LOCK to avoid a
deadlock with `session.save()` write paths.
No streaming write path or run_journal fsync behaviour is changed — the
fix is read-side only.
When API server runs append messages directly to state.db, reconcile WebUI sidecar sessions with those canonical rows across API responses, model-facing streaming context, and active browser refresh.
Add append-only state.db merge helpers, metadata-only counts for refresh polling, and regression coverage for API visibility, context incorporation, and frontend refresh behavior.
- Session.composer_draft field: {text, files} stored in session JSON
- POST+GET /api/session/draft endpoint for save/load
- loadSession: save draft before switch, restore from S.session.composer_draft
- textarea input: debounced 400ms auto-save to server
- send(): clear draft after message is sent
- lockComposerForClarify(): save draft before card locks composer
- _restoreComposerDraft: clears textarea when target has no draft, guards
against stale responses racing new session loads, exact text comparison
- Session.compact(): includes composer_draft in response
- Fix: use handler.command instead of parsed.method (ParseResult has no .method)
Co-authored-by: Minimax <noreply@minimax.io>
SHOULD-FIX: rate-limit _repair_stale_pending repair-firing telemetry. Switch
from unconditional logger.warning to age-keyed: WARNING when pending_age <
5min (the diagnostically valuable race window — actual leak-path candidates
that slipped past the grace guard) and DEBUG for the long-tail (orphaned
sidecars from prior process lifetimes). Prevents reconnect loops on stuck
sessions from flooding the log while preserving the diagnostic signal we
want for tuning _REPAIR_STALE_PENDING_GRACE_SECONDS empirically.
NIT: _LOCAL_SERVER_PROVIDERS expanded with lm-studio (hyphenated alias used
in some custom_providers configs and already recognized at api/config.py:2189
for SSRF host trust) and localai (LocalAI project). Test parametrize expanded
from 7 to 11 names, also covering pre-existing koboldcpp and textgen for
symmetry. +4 regression tests.
NIT (docs): CHANGELOG callout for the RFC1918 behavior change. Internal-
network OpenAI-compatible proxies now preserve the model prefix on private-IP
base_urls. Documented the migration path: configure as a custom_providers
entry to bypass the local-server detection.
NIT (deferred, optional): narrowing the heuristic to is_loopback only is
left as future work; the broader scope was an explicit goal in the bug
body and Opus flagged it as SHOULD-DISCUSS-but-not-block.
4184 -> 4188 passing. 0 regressions. ~10 LOC absorbed total.
Closes#1623 — Lower SSE app heartbeat from 30s to 5s at every long-lived
handler (main agent, terminal, gateway-watcher, approval-poller, clarify-poller).
Kernel TCP keepalive declares peer dead at 25s worst-case (10s KEEPIDLE +
5s KEEPINTVL * 3 KEEPCNT, added v0.50.289 #1581). 30s app heartbeat let the
kernel tear sockets down on flaky networks before the app sent its first
keepalive byte — drops at ~10s during long thinking phases. New named
constant _SSE_HEARTBEAT_INTERVAL_SECONDS=5; regression test pins the
inequality (app_heartbeat * 2 <= kernel_window) so future tuning can't
re-introduce the misalignment.
Closes#1624 — Add 30s grace period to _repair_stale_pending() trigger.
Without it, any narrow race between the streaming thread clearing
pending_user_message and STREAMS.pop(stream_id) produces a false-positive
'Previous turn did not complete.' marker on a turn that finished correctly
(reproducible after every command-approval turn). Defense-in-depth, not
the root-cause fix — the actual streaming-thread leak path is tracked
separately. Falsy pending_started_at (legacy sidecars) treated as
'old enough' so legitimate legacy-data recovery still works. Plus
logger.warning telemetry on every legitimate repair so the next batch of
user reports tells us whether the underlying race still fires.
Closes#1625 — Local model servers (LM Studio, Ollama, llama.cpp, vLLM,
TabbyAPI, koboldcpp, textgen-webui) now keep the full HuggingFace-style
model id (e.g. 'qwen/qwen3.6-27b' instead of stripped 'qwen3.6-27b'). New
_LOCAL_SERVER_PROVIDERS set + _base_url_points_at_local_server() loopback/
RFC1918 heuristic — either signal triggers no-strip. Backward compat
preserved for OpenAI-compatible proxies on public hosts (LiteLLM at
litellm.example.com still strips openai/gpt-5.4 -> gpt-5.4). Updated the
existing #230/#433 test to reflect that #1625 supersedes the strip-on-custom
rule for loopback hosts (see api/config.py and test_model_resolver.py
docstring update). Reported by @akarichan8231 in Discord on 2026-05-04.
42 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 (30)
4142 -> 4184 passing. 0 regressions.
SHOULD-FIX #1 (renamed-root client cross-alias): drop strict-equality client
filter at static/sessions.js:1853. Server-side _profiles_match cross-aliases
'default'-tagged rows to a renamed root 'kinni'; the strict-equality client
would reject them, dropping every legacy session for renamed-root users. The
server is now solely authoritative for profile scoping.
SHOULD-FIX #2 (messaging-source dedupe ordering): _keep_latest_messaging_session_per_source
now runs AFTER the profile filter at api/routes.py:2078. Before, it ran on
the merged-cross-profile list with profile-blind keys, discarding the older
profile's row across profiles before the scope filter — leaving zero rows for
any messaging identity the active profile shared with another profile.
NIT #3: _projects_migrated flag now set only AFTER successful save_projects.
NIT #4: cleaned dead test code in test_is_root_profile_invalidation_drops_stale.
NIT #5: _create_profile_fallback's clone_from=='default' literal now routes
through _is_root_profile() for parity with the 5 other callsites.
+2 regression tests pin the SHOULD-FIX shapes:
- test_keep_latest_messaging_runs_after_profile_filter (source-string ordering)
- test_static_sessions_js_trusts_server_profile_scoping (no client re-filter)
4173 -> 4175 tests pass. 0 regressions.
Closes#1611 — /api/sessions filters by active profile by default; ?all_profiles=1
opt-in for aggregate views; new _profiles_match() helper honours renamed-root
cross-aliasing; static/sessions.js drops the s.is_cli_session bypass; toggle-on
re-fetches with all_profiles=1 instead of slicing client-cached rows.
Closes#1612 — new _is_root_profile() central helper consults list_profiles_api()
for is_default=True matches alongside the legacy 'default' alias. Replaces five
literal-default callsites in api/profiles.py. Memoized with explicit invalidation
hooks at create + delete. Sticky active_profile file write now stores '' for
renamed root, consistent with the legacy empty==root contract.
Closes#1614 — projects carry a profile field stamped at create-time;
/api/projects filters by active profile; /api/projects/{create,rename,delete}
and /api/session/move reject ops on cross-profile projects with 404; new
_PROJECTS_MIGRATION migration in load_projects() back-tags untagged projects
from any session that uses them, fall back to 'default'; ensure_cron_project
keys lookup by (name, profile) so each profile gets its own Cron Jobs project.
31 regression tests (9+11+11) pin the renamed-root resolution, server-side
profile scoping shape, helper invariants, cross-alias matching, migration
behavior, and active-profile guards on every project mutation endpoint.
4148 tests pass.
Reporter: @stefanpieter
Co-authored-by: stefanpieter <noreply@github.com>
Both flagged by pre-release Opus advisor; both clearly defensive and small
enough to absorb in-release per the reviewer-flagged-fix-in-release-not-followup
policy.
SHOULD-FIX #1 (api/routes.py:_clear_stale_stream_state, ~25 LOC):
After the metadata-only reload (#1559 Layer 2), the local 'session'
variable is reassigned to the full-load object but the caller still holds
the original metadata-only stub. /api/session then returns the stale
active_stream_id at routes.py:1791, causing the frontend to attempt one
ghost SSE reconnect before recovering. Fix: capture original_stub at
function entry, then patch its in-memory active_stream_id and pending_*
fields to None after both the early-return (full-load already cleared)
path AND the successful-mutation path. Now the caller's read returns
fresh state, no ghost reconnect.
SHOULD-FIX #2 (api/models.py:Session.save, ~20 LOC):
The .bak write at api/models.py:436 used write_text() which truncates-
then-writes — a crash mid-write or concurrent backup-producing save
could leave a torn .bak. Recovery defends correctly (JSONDecodeError →
returns -1 → 'no_action'), so the failure mode was 'backup lost' not
'spurious restore'. Fix: tmp + os.replace pattern matching the main file
write at line 446-453. Now backup either lands cleanly or doesn't land
at all.
4026/4026 tests pass post-absorb.
The PR title and body correctly say 'Closes #1558' but every code comment,
the test file name, error-message strings, docstrings, and the original
commit body referenced #1557 instead. Independent reviewer flagged this:
> The 17 wrong references won't auto-close issue #1558 from the commit
> message — and the test file name will be misleading for future archeology.
> Worth a one-pass s/#1557/#1558/g (and rename test file →
> test_metadata_save_wipe_1558.py) before merge so the artifacts agree
> with reality.
This commit:
- Renames tests/test_metadata_save_wipe_1557.py → test_metadata_save_wipe_1558.py
- Replaces 17 #1557 references with #1558 across:
- tests/test_metadata_save_wipe_1558.py (7 refs)
- api/models.py (5 refs in Session.save guard + backup safeguard comments)
- api/routes.py (2 refs in _clear_stale_stream_state docstring + log)
- api/session_recovery.py (3 refs)
- server.py (3 refs in startup self-heal block)
Verified: 6/6 tests in tests/test_metadata_save_wipe_1558.py pass
with the renamed file + updated references.
v0.50.279 introduced api.routes._clear_stale_stream_state() (#1525) which
calls session.save() to clear stale active_stream_id/pending_* fields. The
helper is called from /api/session and /api/session/status — both of which
load the session with metadata_only=True. Session.load_metadata_only()
synthesizes a stub with messages=[] (its whole purpose: fast metadata read
without parsing the 400KB+ messages array). Session.save() unconditionally
writes self.messages to disk via os.replace(), so saving a metadata-only
stub atomically overwrites the on-disk JSON with messages=[], wiping the
entire conversation.
Production trigger: every SSE reconnect cycle after a server restart polls
/api/session/status, which fans out to _clear_stale_stream_state, which
saves the metadata-only stub. The user reported losing 1000+ message
conversations and seeing 'Reconnecting…' loops on every prompt — the
reconnect loop kept the cycle running until the conversation was empty.
Fix: three layers, defense in depth.
(1) api/models.py: load_metadata_only() now sets _loaded_metadata_only=True
on the returned stub. Session.save() raises RuntimeError if that flag
is set — a hard guard so any future caller making the same mistake
cannot wipe data, only crash visibly.
(2) api/routes.py: _clear_stale_stream_state() now detects the metadata-only
flag and re-loads the full session with metadata_only=False before
mutating persisted state. The full-load path also runs
_repair_stale_pending() which independently clears the stream flags,
so the explicit clear becomes a no-op in most cases — but messages
stay intact.
(3) api/models.py + api/session_recovery.py: every save() that would
SHRINK the messages array (the precise failure shape of #1557) first
snapshots the previous file to <sid>.json.bak. Server.py runs
recover_all_sessions_on_startup() at boot — any session whose live
JSON has fewer messages than its .bak is restored automatically.
Idempotent on clean state. Backup overhead is zero on the normal
grow-the-conversation path.
Reproducer (master): test_metadata_only_save_does_not_wipe_messages goes
from 1000 messages to 0 in a single save() call. After the fix, 1000
messages survive.
Tests: 6 new regression tests in tests/test_metadata_save_wipe_1557.py
covering all three layers. Full pytest: 4019 → 4025 (+6, all green).
Live verified on port 8789: write 1000-msg session with stale active_stream_id,
hit /api/session/status, /api/session — file ends with 1002 messages
(_repair_stale_pending injects an error-marker pair on full reload, harmless
existing behavior), active_stream_id cleared, pending cleared, no Reconnecting
loop.
Closes#1557.
Reported by AvidFuturist via user feedback on v0.50.282.
Production WebUI on macOS launchd reproduced an HTTP-unhealthy wedge after
#1483 closed the bootstrap supervisor double-fork: process alive, port
listening, every HTTP request reset by peer before a response. The reporter
(@insecurejezza) traced it to FD exhaustion — 366 open FDs on the wedged
process, 238 of them `~/.hermes/state.db`, `state.db-wal`, and `state.db-shm`.
Root cause: four sqlite callsites use `with sqlite3.connect(...) as conn:`.
Python's sqlite3 connection context manager only commits or rolls back on
exit; it does NOT close the connection. `/api/sessions` polling calls these
on every sidebar refresh, so each poll leaked one or more open state.db FDs
until the process hit macOS's soft FD limit and new sqlite3.connect() calls
inside fresh request handlers raised before any response bytes were written.
Fix: wrap each `sqlite3.connect(...)` in `contextlib.closing(...)` so the
connection is explicitly closed on scope exit, in addition to the auto-
commit / rollback semantics that `Connection.__exit__` already provides.
Callsites patched:
- api/agent_sessions.py:read_importable_agent_session_rows
- api/agent_sessions.py:read_session_lineage_metadata
- api/models.py:get_cli_session_messages
- api/models.py:delete_cli_session
Reporter's verification (post-patch, 100-request stress loop against
/api/sessions and /api/projects):
batch=1 fd=92 state_handles=0
batch=2 fd=92 state_handles=0
...
batch=5 fd=92 state_handles=0
Pre-patch the same loop made FD count and state.db handle count climb
monotonically.
4 regression tests in tests/test_issue1494_state_db_fd_leak.py monkeypatch
sqlite3.connect with a tracking wrapper that records .close() calls and
assert every connection opened by each of the four functions is explicitly
closed. Verified to fail (catching the original bug) when the closing()
wrap is reverted: "leaked 5 of 5 sqlite connection(s) — context-manager-
only `with sqlite3.connect()` does not close. Wrap in contextlib.closing()."
This addresses Bug #2 of the umbrella issue #1458. Bug #3 (HTTP-unhealthy
wedge in the absence of FD exhaustion) remains open pending separate
diagnostic data — explicit scope discipline.
Closes#1494
Refs #1458 (Bug #2 of 3)
Co-authored-by: insecurejezza <70424851+insecurejezza@users.noreply.github.com>
- #1481: Use absolute path for service worker registration to avoid
<base> tag resolution on session pages causing JSON 404
- #1484: Fix tool-card expanded args readability — replace
word-break:break-all with pre-wrap+break-word, add display:block
so newlines and indentation are preserved
- #1486: Prefer WebUI JSON title over state.db title for CLI sessions,
fixing rename-not-persisting after compression chain extension
- #1469/#1360: Add _programmaticScroll guard to distinguish
programmatic scrolls from user scrolls, preventing the race
condition where scrollIfPinned() re-pins after user scrolls up
Fix: gate parent_session_id emission in compact() on truthiness so
sessions without a fork link don't leak parent_session_id: None and
break the v0.50.251 lineage end_reason gating in agent_sessions.py.
The /branch endpoint sets the field on saved forks; everything else
keeps the v0.50.251 sidebar lineage path as the canonical source.
Persist session model_provider separately from model IDs so active/default provider selections like gpt-5.5 remain bare while routing through OpenAI Codex. Keep @provider:model for picker disambiguation and runtime bridging, and preserve explicit OpenRouter plus custom/proxy base_url routing.
PR #1358 added the client-side lineage collapse helper, but
/api/sessions often did not include _lineage_root_id for the WebUI
JSON sessions visible in the sidebar. In that case the helper has no
grouping key and multiple same-title continuation rows remain visible.
This PR:
- Reads parent_session_id and end_reason from state.db.sessions for
the WebUI sidebar's session ids
- Walks the parent chain when end_reason is 'compression' or
'cli_close', producing _lineage_root_id and _compression_segment_count
- Cycle-detects via a 'seen' set
- Preserves projected lineage metadata on imported/gateway session rows
- Allows sidebar collapse to group cross-surface continuation chains
(CLI-close → WebUI continuation) while keeping non-continuation
parent rows flat
Co-authored-by: Dennis Soong <dso2ng@gmail.com>
Session.load_metadata_only().compact() was dropping is_cli_session, source_tag, session_source, and source_label, so imported CLI/gateway sessions lost their provenance in sidebar/API payloads. Adds these to METADATA_FIELDS and Session.compact().
Co-authored-by: Dennis Soong <dso2ng@gmail.com>
Pre-release Opus review on PR #1345 (Finding #3) flagged that
get_cli_sessions() was calling ensure_cron_project() once per cron
session in the loop — N lock acquires + N disk reads of projects.json
for N cron sessions per sidebar refresh.
Hoist a per-scan lazy memoizer (_cron_pid()) so we pay the resolution
cost at most once per get_cli_sessions() call. The memoizer is local
to the function (closure) so it's naturally scoped to a single scan
and doesn't leak across calls.
Could also have made ensure_cron_project() module-memoized, but that
would need invalidation on project deletion — the per-scan cache is
simpler and correct without coordination.
