v0.3.0 release review: watchdog re-arm, rule-2 sign-offs, GPL source removal, repo hygiene

Per the 2026-09-19 adversarial pre-ship review (findings.md M-192):

- d318watchdog.c: one-shot per OCCURRENCE, not per process -- re-arm after
  600 ticks of signature absence so a Facility replay in the same session
  (AllUnlocked) is still covered.
- model.c: RULE-2-SIGNOFF records for the retained M-183/M-185 and D311
  defensive clamps (user-approved retention as the stability-maximizing
  option; stale 'Threshold: 50.0' comment corrected to 10.0f; both marked
  post-release removal candidates pending full cutscene re-verification).
- reference/mouse-injector/: removed from the public repo (GPLv2 source +
  prebuilt discord-rpc.lib in an MIT project; never compiled here).
  Provenance stub README remains; path gitignored for local re-vendoring.
  AGENTS.md / GEPD-INPUT-PLAN.md / optionsoverlay.c refs updated.
- scratch/: untracked + gitignored (19 session logs/probe sources were
  committed in the release window).
- findings-index.csv: D317 (and 5 other stale rows) now CLOSED -- added
  CLOSED to gen_findings_index.py's verdict vocabulary.
- docs: D310 perf gauge (no change warranted), GE_DEBUG_UNLOCKALL noted in
  security-and-fidelity-status.md, release notes gain the missing D318
  watchdog bullet + FOV-clamp clarification.

Build verified: ./build-pc.sh ntsc-final clean; gen_findings_index.py
--check and gen_env_probes.py --check pass.

.github/release-notes.md

@@ -48,8 +48,10 @@
 - **Automatic widescreen FOV scaling**: the game now scales its field of
   view to match your display's aspect ratio automatically, instead of
   requiring the old manual FOV-scale slider. Toggle off in the F10 overlay
-  (`Widescreen Auto`) if you prefer the original 4:3 framing. (This is FOV
-  scaling, not a native 16:9 world/HUD re-render — see Known Issues.)
+  (`Widescreen Auto`) if you prefer the original 4:3 framing. The scaled
+  vertical FOV is clamped to a 20°–160° range as a guard against degenerate
+  values on unusual aspect ratios. (This is FOV scaling, not a native 16:9
+  world/HUD re-render — see Known Issues.)
 - **TV overscan artifacts removed**: the black bars top/bottom and the thin
   pixel strips left/right of the gameplay view are gone (D247/D246) — both
   were the original N64 TV-safe-area margin, invisible on a CRT under real
@@ -77,6 +79,13 @@
   players hit with an identical crash address (GitHub #87, D301) — this
   should close that crash, though we weren't able to reproduce the exact
   trigger condition ourselves to confirm it end-to-end.
+- **Facility's execution softlock is caught and recovered from**: a rare
+  race in the original game's own AI script (present on the N64 too) could
+  leave Ourumov frozen mid-execution after Objective C, with no way out short
+  of reloading. A port-side watchdog now detects the exact unrecoverable
+  state and re-seeds the attack so the scene plays out as authored; it
+  re-arms once the scene has cleared, so replaying Facility later in the
+  same session is still covered (D318).
 - **A Steam Deck crash is fixed**: an audio-thread bug could crash the game
   early in a level (`sndHandleEvent`'s sound-preemption scan could
   dereference a pointer without checking it was valid first). Live-verified