re: the movie/subtitle/voice link is solved statically -- INDEX called it a dynamic unknown

INDEX carried IXUD as "movie<->track link unknown (dynamic item)". It is a
config record on the disc: tables.pak schema 0x067025b9, whose keys match the
movie game-part symbols in the executable (MOVIE / TELOP / SUBTITLE /
VOICETRACK, plus SUBTITLE_FONT / SUBTITLE_Y / SUBTITLE_HEIGHT next to
silph::GamePart_Movie::Impl::OnPrepare).

101 movies mapped: 94 with a subtitle, 83 with a voice track, 21 with a telop.
Every subtitle reference was looked up in dat/movie/<lang>.pak and 93 of 94
resolve -- SUBTITLE_S12B.tbl resolves in NONE of the six languages, a dangling
reference on the retail disc rather than a decode failure.

Naming is SUBTITLE_<base>.tbl and VOICE_<base>, with the staff roll and five
supply movies (VOICE_D_450..454) as documented exceptions, so a reimplementation
can resolve by convention and fall back to the table for those six.

Deliberately NOT published: the record's ~104 script ids paired to movies.
Positional pairing drifts by three -- visible at the tail, where
S24/S27_SUPPLY_ACROPOLIS would have to map to hokyu_LS_s24A/s27A and do not --
because the IDXD pool dedupes repeated values and an id whose movie was already
named contributes no token. The CSV is keyed by movie file instead.

For the intro-movie work: ADV.wmv has VOICE_ADV and no subtitle, no telop.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

docs/re/INDEX.md

@@ -17,7 +17,7 @@ Promote to a prose `structures/…md` file when a format needs behavioural notes
 | T8aD 2D texture | 🟡 | `sylpheed-formats/src/t8ad.rs` | ~85% decode; **colours ✅ CONFIRMED** ([k8888](structures/texture-color-k8888.md)); ~15% variants deferred |
 | RATC bundle | 🟡 | `sylpheed-formats/src/ratc.rs` | child listing confirmed; one level deep |
 | LSTA sprite list | 🟡 | `sylpheed-formats/src/lsta.rs` | inline T8aD frames |
-| IXUD subtitle | 🟡 | `sylpheed-formats/src/ixud.rs` | timed cues; **movie↔track link unknown** (dynamic item) |
+| IXUD subtitle | 🟡/✅ | `sylpheed-formats/src/ixud.rs` + [movie link](movie-subtitle-link.md) | timed cues. **The movie↔subtitle↔voice link is solved — statically**, from the movie config record in `tables.pak` (schema `0x067025b9`), not from the running game as this row previously assumed: [101 movies mapped](captures/movie-subtitle-voice-map.csv), 94 with subtitles, 83 with voice, 21 with a telop overlay. 93 of 94 subtitle refs resolve in the language paks; **`SUBTITLE_S12B.tbl` is missing from all six languages** — a dangling reference on the disc. Naming is `SUBTITLE_<base>.tbl` / `VOICE_<base>` with six documented exceptions. The record's ~104 **script ids** are ❔ — positional pairing drifts by three because the IDXD pool dedupes repeated values |
 | Fonts (ttf/otf/ttc) | ✅ | `sylpheed-formats/src/font.rs` | standard OpenType, parsed via ttf-parser |
 | XBG7 mesh | 🟡/❔ | `sylpheed-formats/src/mesh.rs` + `tests/mesh_disc.rs` ([xbg7](structures/xbg7-mesh.md)) | weapons/props: declaration-driven variable stride (36 models), GPU-confirmed. **Stage containers: 5662 sub-models across 22 stages** via content-anchored grouped pools (`stage_models`). Quantized hero bodies (DeltaSaber `f004`) still declined |
 | Capital-ship part placement | 🟡 | `sylpheed-formats/src/ship.rs` (static) + [runtime capture](ship-placement-runtime-capture.md) | hull placement static-exact; external parts approximate statically. **Runtime capture** (Canary F10 → VS-constant WorldView) gives ground truth — validated on `e106` destroyer; not yet baked into the viewer |

docs/re/captures/movie-subtitle-voice-map.csv

@@ -0,0 +1,102 @@
+movie,telop,subtitle,voicetrack
+logo1.wmv,,,
+logo2.wmv,,,
+logo3.wmv,,,
+logo4.wmv,,,
+ADV.wmv,,,VOICE_ADV
+SYLPH_HD720p_8M-CBR_2ch.wmv,pwterop_s01a.prt,SYLPH_HD720p_8M-CBR_2ch.tbl,
+S00A.wmv,,SUBTITLE_S00A.tbl,VOICE_S00A
+S01A.wmv,,SUBTITLE_S01A.tbl,VOICE_S01A
+RT01A.wmv,pwrt01.prt,SUBTITLE_RT01A.tbl,VOICE_RT01A
+RT01B.wmv,,SUBTITLE_RT01B.tbl,VOICE_RT01B
+RT01C_1.wmv,,SUBTITLE_RT01C_1.tbl,VOICE_RT01C_1
+RT01C_2.wmv,,SUBTITLE_RT01C_2.tbl,VOICE_RT01C_2
+S02A.wmv,pwterop_s02a.prt,SUBTITLE_S02A.tbl,VOICE_S02A
+S02B.wmv,,SUBTITLE_S02B.tbl,VOICE_S02B
+S02C.wmv,,SUBTITLE_S02C.tbl,VOICE_S02C
+RT02A.wmv,pwrt02.prt,SUBTITLE_RT02A.tbl,VOICE_RT02A
+RT02B.wmv,,SUBTITLE_RT02B.tbl,VOICE_RT02B
+RT02C.wmv,,SUBTITLE_RT02C.tbl,VOICE_RT02C
+RT02D_1.wmv,,SUBTITLE_RT02D_1.tbl,VOICE_RT02D_1
+RT02D_2.wmv,,SUBTITLE_RT02D_2.tbl,VOICE_RT02D_2
+hokyu_LS_s02A.wmv,,SUBTITLE_hokyu_LS_s02A.tbl,VOICE_D_450
+hokyu_LS_s02H.wmv,,SUBTITLE_hokyu_LS_s02H.tbl,VOICE_D_453
+S03A.wmv,,SUBTITLE_S03A.tbl,VOICE_S03A
+RT03A.wmv,pwrt03.prt,SUBTITLE_RT03A.tbl,VOICE_RT03A
+RT03B.wmv,,SUBTITLE_RT03B.tbl,VOICE_RT03B
+RT03C.wmv,,SUBTITLE_RT03C.tbl,VOICE_RT03C
+RT03D.wmv,,SUBTITLE_RT03D.tbl,VOICE_RT03D
+hokyu_LS_s03A.wmv,,SUBTITLE_hokyu_LS_s03A.tbl,
+hokyu_LS_s03H.wmv,,SUBTITLE_hokyu_LS_s03H.tbl,
+S04A.wmv,,SUBTITLE_S04A.tbl,VOICE_S04A
+S04B.wmv,,SUBTITLE_S04B.tbl,VOICE_S04B
+RT04A.wmv,pwrt04.prt,SUBTITLE_RT04A.tbl,VOICE_RT04A
+RT04B.wmv,,SUBTITLE_RT04B.tbl,VOICE_RT04B
+hokyu_DS_s02A.wmv,,SUBTITLE_hokyu_DS_s02A.tbl,VOICE_D_452
+S05A.wmv,,SUBTITLE_S05A.tbl,VOICE_S05A
+RT05A.wmv,pwrt05.prt,SUBTITLE_RT05A.tbl,VOICE_RT05A
+RT05B.wmv,,SUBTITLE_RT05B.tbl,VOICE_RT05B
+RT05C.wmv,,SUBTITLE_RT05C.tbl,VOICE_RT05C
+S06A.wmv,pwterop_s06a.prt,SUBTITLE_S06A.tbl,VOICE_S06A
+S06B.wmv,,SUBTITLE_S06B.tbl,VOICE_S06B
+RT06A.wmv,pwrt06.prt,SUBTITLE_RT06A.tbl,VOICE_RT06A
+RT06B.wmv,,SUBTITLE_RT06B.tbl,VOICE_RT06B
+RT06C.wmv,,SUBTITLE_RT06C.tbl,VOICE_RT06C
+RT06D.wmv,,SUBTITLE_RT06D.tbl,VOICE_RT06D
+hokyu_LS_s06A.wmv,,SUBTITLE_hokyu_LS_s06A.tbl,
+hokyu_LS_s06H.wmv,,SUBTITLE_hokyu_LS_s06H.tbl,
+S07A.wmv,,SUBTITLE_S07A.tbl,VOICE_S07A
+S07B.wmv,,SUBTITLE_S07B.tbl,VOICE_S07B
+RT07A.wmv,pwrt07.prt,SUBTITLE_RT07A.tbl,VOICE_RT07A
+RT07B.wmv,,SUBTITLE_RT07B.tbl,VOICE_RT07B
+RT07C.wmv,,SUBTITLE_RT07C.tbl,VOICE_RT07C
+hokyu_DS_s07A.wmv,,SUBTITLE_hokyu_DS_s07A.tbl,
+hokyu_DS_s07H.wmv,,SUBTITLE_hokyu_DS_s07H.tbl,VOICE_D_454
+RT08A.wmv,pwrt08.prt,SUBTITLE_RT08A.tbl,VOICE_RT08A
+RT08B.wmv,,SUBTITLE_RT08B.tbl,VOICE_RT08B
+RT08C.wmv,,SUBTITLE_RT08C.tbl,VOICE_RT08C
+hokyu_DS_s08A.wmv,,SUBTITLE_hokyu_DS_s08A.tbl,
+S09B.wmv,,SUBTITLE_S09B.tbl,VOICE_S09B
+RT09A.wmv,pwrt09.prt,SUBTITLE_RT09A.tbl,VOICE_RT09A
+RT09B.wmv,,SUBTITLE_RT09B.tbl,VOICE_RT09B
+RT09C.wmv,,SUBTITLE_RT09C.tbl,VOICE_RT09C
+RT09D.wmv,,SUBTITLE_RT09D.tbl,VOICE_RT09D
+hokyu_LS_s09A.wmv,,SUBTITLE_hokyu_LS_s09A.tbl,VOICE_D_451
+hokyu_LS_s09H.wmv,,SUBTITLE_hokyu_LS_s09H.tbl,
+S10B.wmv,,SUBTITLE_S10B.tbl,VOICE_S10B
+RT10A.wmv,pwrt10.prt,SUBTITLE_RT10A.tbl,VOICE_RT10A
+RT10B.wmv,,SUBTITLE_RT10B.tbl,VOICE_RT10B
+S11A.wmv,,SUBTITLE_S11A.tbl,VOICE_S11A
+S11C.wmv,,SUBTITLE_S11C.tbl,VOICE_S11C
+RT11A.wmv,pwrt11.prt,SUBTITLE_RT11A.tbl,VOICE_RT11A
+RT11B.wmv,,SUBTITLE_RT11B.tbl,VOICE_RT11B
+RT11C.wmv,,SUBTITLE_RT11C.tbl,VOICE_RT11C
+hokyu_LS_s11A.wmv,,SUBTITLE_hokyu_LS_s11A.tbl,
+S12A.wmv,,SUBTITLE_S12A.tbl,VOICE_S12A
+S12B.wmv,,SUBTITLE_S12B.tbl,VOICE_S12B
+S12C.wmv,,SUBTITLE_S12C.tbl,VOICE_S12C
+RT12A.wmv,pwrt12.prt,SUBTITLE_RT12A.tbl,VOICE_RT12A
+RT12B_1.wmv,,SUBTITLE_RT12B_1.tbl,VOICE_RT12B_1
+RT12B_2.wmv,,SUBTITLE_RT12B_2.tbl,VOICE_RT12B_2
+S13A.wmv,,SUBTITLE_S13A.tbl,VOICE_S13A
+S13B.wmv,,SUBTITLE_S13B.tbl,VOICE_S13B
+RT13A.wmv,pwrt13.prt,SUBTITLE_RT13A.tbl,VOICE_RT13A
+RT13B_1.wmv,,SUBTITLE_RT13B_1.tbl,VOICE_RT13B_1
+RT13B_2.wmv,,SUBTITLE_RT13B_2.tbl,VOICE_RT13B_2
+hokyu_DS_s13A.wmv,,SUBTITLE_hokyu_DS_s13A.tbl,
+S14A.wmv,,SUBTITLE_S14A.tbl,VOICE_S14A
+RT14A.wmv,pwrt14.prt,SUBTITLE_RT14A.tbl,VOICE_RT14A
+RT14B.wmv,,SUBTITLE_RT14B.tbl,VOICE_RT14B
+RT14C.wmv,,SUBTITLE_RT14C.tbl,VOICE_RT14C
+hokyu_DS_s14H.wmv,,SUBTITLE_hokyu_DS_s14H.tbl,
+S15A.wmv,pwterop_s15a.prt,SUBTITLE_S15A.tbl,VOICE_S15A
+S15B.wmv,,SUBTITLE_S15B.tbl,VOICE_S15B
+S15C.wmv,,SUBTITLE_S15C.tbl,VOICE_S15C
+RT15A.wmv,pwrt15.prt,SUBTITLE_RT15A.tbl,VOICE_RT15A
+RT15B.wmv,,SUBTITLE_RT15B.tbl,VOICE_RT15B
+RT15C.wmv,,SUBTITLE_RT15C.tbl,VOICE_RT15C
+hokyu_LS_s15A.wmv,,SUBTITLE_hokyu_LS_s15A.tbl,
+S16A.wmv,pwterop_s16a.prt,SUBTITLE_S16A.tbl,VOICE_S16A
+RT16C.wmv,pwrt16.prt,SUBTITLE_RT16C.tbl,VOICE_RT16C
+hokyu_LS_s24A.wmv,,,
+hokyu_LS_s27A.wmv,,,

docs/re/movie-subtitle-link.md

@@ -0,0 +1,75 @@
+# The movie ↔ subtitle ↔ voice link ✅ (static)
+
+[`INDEX`](INDEX.md) carried the IXUD subtitle format as 🟡 with **"movie↔track
+link unknown (dynamic item)"** — i.e. a question expected to need the running
+game. It does not: the link is a config record on the disc, and it verifies
+against the disc's own contents.
+
+## Where it is
+
+`dat/tables.pak`, the IDXD record with schema `0x067025b9`. Its keys come from
+the movie game-part — the executable carries them next to the symbol
+`silph::GamePart_Movie::Impl::OnPrepare`:
+
+```
+PATH = dat\movie\      SUBTITLE_FONT = fra.pak+GOTHICB.TTF
+SUBTITLE_Y = 600       SUBTITLE_HEIGHT = 33
+MOVIE   TELOP   SUBTITLE   VOICETRACK
+```
+
+Each movie is one group of values:
+
+```
+S02A.wmv                              MOVIE
+fra.pak+pwterop_s02a.prt              TELOP        (optional overlay)
+fra.pak+SUBTITLE_S02A.tbl             SUBTITLE
+VOICE_S02A                            VOICETRACK
+```
+
+`<lang>.pak+<member>` resolves inside `dat/movie/<lang>.pak`, and the six
+language paks (`eng`, `fra`, `deu`, `esp`, `ita`, `jpn`) each carry the same
+member names — so the prefix in the table is just the build's language and the
+member name is the portable part. The recovered map is
+[`captures/movie-subtitle-voice-map.csv`](captures/movie-subtitle-voice-map.csv):
+**101 movies, 94 with a subtitle, 83 with a voice track, 21 with a telop.**
+
+## Verified, and one real defect
+
+Every subtitle reference was looked up in the language paks. **93 of 94 resolve.
+`SUBTITLE_S12B.tbl` resolves in none of the six languages** — a dangling
+reference on the retail disc, not a decode failure on our side. Worth knowing
+before the reimplementation treats a missing subtitle table as a bug of its own.
+
+The naming is a convention with two documented exceptions:
+
+- subtitles are `SUBTITLE_<movie base>.tbl` — the only departure is the staff
+  roll, `SYLPH_HD720p_8M-CBR_2ch.wmv` → `SYLPH_HD720p_8M-CBR_2ch.tbl`;
+- voice tracks are `VOICE_<movie base>` — except five supply-run movies
+  (`hokyu_LS_s02A`, `hokyu_LS_s02H`, `hokyu_DS_s02A`, `hokyu_DS_s07H`,
+  `hokyu_LS_s09A`), which point at shared lines `VOICE_D_450…454`.
+
+So a reimplementation can resolve a movie's subtitle and voice **by convention**,
+and should fall back to this table for those six cases rather than assuming it.
+
+## What is *not* recoverable from this record
+
+The record also lists ~104 **script ids** (`LOGO1`, `ADVERTISE_MOVIE`,
+`STAFF_ROLL`, `MS00A`, `STAGE01_PHASE01`, `S02_SUPPLY_ACROPOLIS`, …) — the names
+stage scripts use to trigger a movie. Pairing them positionally with the 101
+movie groups **does not work**: the counts differ by three and the drift is
+visible at the tail, where the last ids (`S24_SUPPLY_ACROPOLIS`,
+`S27_SUPPLY_ACROPOLIS`) would have to map to `hokyu_LS_s24A.wmv` /
+`hokyu_LS_s27A.wmv` and under positional pairing do not.
+
+The cause is the same IDXD property that bit the Arsenal table: **the string pool
+stores each distinct string once**, so an id whose movie was already named
+earlier contributes no new value token and its group silently disappears. The id
+list is therefore ❔ until the binary node/index region is decoded — and the CSV
+is deliberately keyed by **movie file**, which is the part the data actually
+supports.
+
+## Note for the intro-movie investigation
+
+`ADV.wmv` — the one the emulator work is about — has `VOICETRACK = VOICE_ADV`
+and **no subtitle and no telop**. So a correct playback of it needs the video and
+that one voice track, nothing else from this table.