docs: correct solo-mission count 21 -> 20 (level_54 'Cuba' is the ending-credits sequence, not a mission)

The campaign has 20 playable missions (SP_LEVEL_MAX // 20 in
bondconstants.h; mission_folder_setup_entries in front.c has exactly 20
entries). The old '21' counted -level_54 (LEVELID_CUBA), which the front
end jumps to after the final mission for the extended cast display +
credits scroll (do_extended_cast_display / bondviewRenderCredits, D129) -
it is not a selectable mission.

- README, docs/index.md, .github/release-notes.md,
  docs/security-and-fidelity-status.md: 21 -> 20 in current-status claims
- AGENTS.md phase status: same correction
- docs/dev/LEVEL-STATUS.md + LEVEL-PLAYTEST.md: relabel the level list;
  counting note explains historical '21/21 PASS' sweep results = 21 stage
  boots (20 missions + ending sequence)
- social-preview card: stat line 21 -> 20, PNG regenerated (1280x640)

.github/release-notes.md

@@ -8,7 +8,7 @@
 > The full single-player campaign runs at a steady 60 fps with audio (music +
 > SFX) playing throughout, on Windows and Linux including Steam Deck, and it
 > is completable end to end: the whole campaign has been playtested through
-> all 21 missions (Agent difficulty). It's an early public cut: all 21 solo
+> all 20 missions (Agent difficulty). It's an early public cut: all 20 solo
 > missions load and run crash-free, but the known issues below are real;
 > feedback is very welcome. **This is a pre-1.0 release, not a finished
 > product** — expect rough edges and missing features until v1.0; see the

.github/social-preview.html

@@ -126,7 +126,7 @@
     <div class="rows">
       <div class="statusline">Status: <span class="status">RELEASED v0.3.0 &mdash; WINDOWS &middot; LINUX &middot; STEAM DECK</span></div>
       <div class="stats">
-        <span class="k">Statistics:</span><span>All 21 solo missions &mdash; full campaign completed in playtesting</span>
+        <span class="k">Statistics:</span><span>All 20 solo missions &mdash; full campaign completed in playtesting</span>
         <span></span><span>~230 game-code units, compiled unmodified</span>
         <span></span><span>~24k lines C/C++ &nbsp;&middot;&nbsp; ~7k Python  (port layer + tools)</span>
         <span></span><span>199 findings root-caused &nbsp;&middot;&nbsp; two coding agents, one human, part-time</span>

AGENTS.md

@@ -51,8 +51,9 @@ Run `/linkcheck` for this sweep. Record new findings in `docs/dev/findings.md`
 
 - **Phase 0–1.5:** done. Build system, boot chain, OS-shim layer, fast3d
   integration, first frames, full intro rendering.
-- **Phase 2 (rendering):** in progress. All 21 solo levels load + render +
-  survive an unattended window; front end (menu → mission select → briefing →
+- **Phase 2 (rendering):** in progress. All 20 solo missions (plus the
+  ending-credits sequence, `-level_54`) load + render + survive an
+  unattended window; front end (menu → mission select → briefing →
   start) is functional; file-backed EEPROM saves work. Cosmetic defects are
   parked in `docs/dev/GRAPHICS-BACKLOG.md`.
 - **Phase 3 (audio + input):** input layer done (`port/src/input.c`); polish

README.md

@@ -73,9 +73,10 @@ listed plainly there.
 ## Status
 
 **v0.3.0 - playable, with known rough edges.** The full single-player
-campaign is completable end to end (all 21 missions, Agent difficulty,
-playtested), at a steady 60 fps; all 21 solo missions load, render and run
-crash-free, verified on Windows, Linux and real Steam Deck hardware. Feedback
+campaign is completable end to end (all 20 missions, Agent difficulty,
+playtested), at a steady 60 fps; all 20 solo missions — plus the
+end-of-campaign credits sequence — load, render and run crash-free, verified
+on Windows, Linux and real Steam Deck hardware. Feedback
 is very welcome.
 
 What a release actually installs (no networking, no telemetry, no ROM or
@@ -84,8 +85,8 @@ game's logic: [Security & fidelity status](docs/security-and-fidelity-status.md)
 
 **Working:** boot sequence and front end (menu → mission select → briefing →
 start), front-end menu navigation on the left stick to match the F10 overlay
-(D282); all 21 solo missions load, render and are crash-free (full campaign
-playtested end to end at Agent difficulty); steady 60 fps
+(D282); all 20 solo missions load, render and are crash-free (full campaign
+playtested end to end at Agent difficulty, including the ending sequence); steady 60 fps
 (software RSP off the presentation critical path); full audio: in-level music and SFX; keyboard + mouse (click-to-lock, proportional aim mode, a single
 simplified sensitivity control) and a modern dual-stick controller layout;
 automatic widescreen FOV scaling; Bond is fixed in cutscenes (no more

docs/dev/LEVEL-PLAYTEST.md

@@ -47,7 +47,7 @@ Objective status: `src/game/objective_status.c`
 - Notes / defects:
 ```
 
-## 21 solo levels (mission order — numbers = `-level_XX`)
+## The 20 solo missions (+ ending sequence; mission order — numbers = `-level_XX`)
 
 | # | Level | -level | Briefing asset |
 |---|---|---|---|
@@ -71,7 +71,14 @@ Objective status: `src/game/objective_status.c`
 | 18 | Cradle | 41 | UbriefcradZ |
 | 19 | Aztec | 28 | UbriefaztZ |
 | 20 | Egypt | 32 | UbriefcrypZ |
-| 21 | Cuba | 54 | (post-Egypt unlock) |
+| — | *Ending sequence* ("Cuba") | 54 | not a playable mission — cast/credits stage (D129) |
 
-(Mission table: `front.c:433`. Cuba = `LEVELID_CUBA`, not in the standard
-folder list — unlocked after Egypt.)
+(Mission table: `front.c`, `mission_folder_setup_entries` — exactly 20
+playable missions; the game's own enum says it, `SP_LEVEL_MAX // 20` in
+`bondconstants.h`). "Cuba" (`-level_54`, `LEVELID_CUBA`) is **not** a
+selectable mission: after the final mission the front end jumps straight to
+it for the extended cast display + credits scroll
+(`front.c` `selected_stage = LEVELID_CUBA` → `do_extended_cast_display(TRUE)`;
+`bondviewRenderCredits`, D129). Older docs and sweep logs count it as a 21st
+"level" — the campaign is 20 missions; "21/21" sweep results mean 21 stage
+boots, of which 20 are missions.)

docs/dev/LEVEL-STATUS.md

@@ -1,4 +1,10 @@
-# LEVEL-STATUS — 21 solo-level load+render sweep (WS4)
+# LEVEL-STATUS — level load+render sweep (WS4) — 20 solo missions + ending sequence
+
+**Counting note:** the campaign is **20 playable missions** (`SP_LEVEL_MAX //
+20` in `bondconstants.h`; `mission_folder_setup_entries` in `front.c` has
+exactly 20 entries). The sweep's 21st boot target, "Cuba" (`-level_54`,
+`LEVELID_CUBA`), is the end-of-campaign cast/credits stage (D129), not a solo
+mission — so "21/21 PASS" below means *21 stage boots*, 20 of them missions.
 
 Method: bare `./build-pc/ge007.x86_64.exe -level_XX` (per-level `-m*` pools
 auto-injected, D121), `GE_PCDUMP="80-260:40"`, ~24 s watchdog then

docs/index.md

@@ -19,7 +19,7 @@ as the [Perfect Dark PC port](https://github.com/fgsfdsfgs/perfect_dark), the
 same Rare "Indy" engine family, one hardware generation apart.
 
 **Status: v0.3.0.** The full single-player campaign runs at a steady 60 fps
-and is completable end to end (all 21 missions playtested); all 21 missions
+and is completable end to end (all 20 missions playtested); all 20 missions
 load and run clean on Windows, Linux and Steam Deck, and audio (music + SFX)
 plays throughout. The known rough edges — mostly cosmetic rendering defects,
 stretched-not-native widescreen, and missing features — are listed plainly

docs/security-and-fidelity-status.md

@@ -82,7 +82,8 @@ port of the N64's PRNG, but wasn't — a shift-operation helper didn't match
 the real MIPS64 instruction semantics it was meant to mirror. This was
 independently confirmed by hand-tracing the assembly against the C port,
 tracked as finding D284, and fixed before the release (verified clean
-across a full 21-level sweep, no crashes). It affected loot placement, AI
+across a full level sweep — all 20 missions plus the ending sequence —
+no crashes). It affected loot placement, AI
 behavior variance, and replay-state determinism from the very first random
 draw, in every release before v0.3.0. Because of the fix, RNG-derived
 output — including the save-file CRC — changed, which meant existing save