[gitubpatrice]

3.2.1 — a second quick tap no longer empties the screen or creates a second note

The defect, published in 3.1.1 and 3.2.0: two taps on a note's back arrow less than ~0.5 s apart
left a white screen (measured on the published 3.2.0: 0.4 s → blank, 0.7 s → normal). Every
onBack called popBackStack() unguarded; the editor, still drawn during its exit transition, took
the second tap and popped the note list too — an empty NavHost. Back closed the app; nothing was lost.

Same family, measured: a double tap on a note stacked it twice; a double tap on "New note" stacked two
editors (Galaxy S9) and created two notes, the second one left empty.

Fix

• NotesTechNavHost: every navigation goes through depuis(entry) — it happens only if that entry is
  still currentBackStackEntry. Not dropUnlessResumed: it would also drop what the editor navigates
  on its own (a deletion done, the unlock sheet dismissed, a linked note created) while its entry is not
  resumed yet, and the note would stay on screen.
• HomeRoute: the "New note" tap goes through dropUnlessResumed.
• HomeViewModel.createNote: one creation at a time, like import and export.

Proof

• DoubleToucherTest drives the whole app with Compose's clock paused between the two gestures: four
  tests, each seen red (the arrow and the note on the 3.2.0 code, the two "New note" ones without the
  screen's guard). The ViewModel guard has no test: on the emulator the creation ends before any second
  tap; it is kept for slow phones.
• Measured without defect: two quick system Backs; the arrow then Back; a double tap on Import (one
  picker); backup, vault and menu actions (already guarded); trash and list gestures.
• Real taps on the 3.2.1 debug build (emulator): double "New note" → one note, one Back; double arrow at
  0.15 s → the list.
• Process killed while the backup picker is open: the app restarts with "could not be completed", the
  empty file the picker created is deleted, the cache is clean.
• Local gate (build, unit tests, detekt, ktlint, lint) green; full instrumented suite on the emulator:
  547 tests, the usual 12 environment failures (software Keystore, no biometrics, no Whisper model).

Release

versionCode base 504 (5040 universal, 5041/5042/5043), changelogs in five languages, READMEs and
SECURITY (EN/FR), docs/13-VERSION-3.2.md D-035.

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