User report: in session mode the upload-log lines split across two files — the
first few before the auto-persist fallback fired, the rest after into a path
with the session-stamp DOUBLED.
Root cause in main.js _persistFallbackLogPath:
1. The strip was gated on the legacy `sessionLog` boolean, which 3.3.35 retired
in favour of `logMode`. So in session/daily mode the gate was false and the
resolved path got persisted with its stamp intact.
2. Even when the gate triggered, its regex matched only the daily YYYY-MM-DD
suffix, not the session "session-YYYY-MM-DD_HH-MM-SS-pid" suffix.
The next getLogFilePath() call read that saved path as the "base", treated the
already-stamped filename as the base name, and re-applied another stamp on top.
First flush hit the original session file; everything after hit a doubly-
stamped one — exactly the symptom (top file: 2 lines, bottom file: the rest).
- lib/log-mode.js: new pure stripModeStampFromFileName helper that removes both
the daily and the session suffix patterns. Anchored to $, no nested
quantifiers (linear).
- main.js: gate on logMode (not sessionLog) and call the helper for daily AND
session, so logFilePath always persists as a bare base.
- Tests: 4 new — strip behaviour + an idempotence regression that locks in
"resolve → strip → resolve = same path" so this can't silently come back. 204/200.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Adds a third choice next to the existing single-file and per-day modes: a new
log file is created at every app start (process boot) and used until the app is
closed. A close → reopen of the app starts a new session, hence a new file.
File pattern: fileuploader-session-YYYY-MM-DD_HH-MM-SS-<pid>.log.
The boolean sessionLog field — misnamed: it actually toggled daily mode — is
replaced by a logMode enum: "single" | "daily" | "session". The misnomer made
the migration the trap to watch: existing users with sessionLog:true must land
on "daily", NOT "session". normalizeLogMode handles this and is unit-tested.
- lib/log-mode.js (new, pure, dual CJS/window export): normalizeLogMode +
resolveLogFileName + format helpers. No fs, no Date.now() at call time.
- config-store.js: normalize at the single load() boundary so downstream
readers consume logMode only. logMode is deliberately NOT seeded in DEFAULTS
(would beat the legacy migration after merge).
- main.js: stamp SESSION_ID once at process start (with pid hedge against
same-second restart collisions); getLogFilePath and buildFallbackLogName
switch on mode via the lib. _resolveUploadLogTarget cache key is now just
the primary path, which already encodes mode/date/session — self-invalidates.
- renderer: <select> with three German labels replaces the old checkbox;
saveSettings writes logMode; index.html loads the lib so window.LogMode is
available in renderSettings.
- Tests: 14 log-mode tests (incl. legacy-migration regression), 3 config-store
tests (defaults, legacy migration, round-trip all three values). 200/200.
End-to-end simulated locally: two launches → two distinct session files; PID
hedge produces distinct names even within the same second.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
