Decode SPINIT H-scene gallery

docs/vm-mapping-plan.md

@@ -53,7 +53,7 @@
 
 - [x] **2.0 — Project structure.** Established `docs/`, `build/{disasm,text,data,scripts-json}/`, `godot/`; game install stays read-only in place. Also relaxed the loader magic check to the `SYS4` family (`SYS4424` patch scripts now parse — was silently skipping 5 scripts).
 - [x] **2.1 — Text corpora.** `tools/extract_phase2.py` → 481/481 scripts: full disassembly (`build/disasm/*.asm`), per-script strings, `build/text/dialogue.jsonl` (**30,057 show-text lines** — the translation corpus), `build/text/strings.jsonl` (38,449 strings tagged by source opcode), `build/manifest.json`.
-- [x] **2.2 — `*INIT` data and rule sources → JSON.** `tools/extract_init.py` auto-detects shape (`name`/`numeric`/`footer`/`mixed`/`rules`/`dispatch`/`banked`) → **SKINIT (131 skills), ITINIT (287 items), EBINIT (277 units), OBINIT (46 object definitions), CIINIT (24 character-information profiles)** [name: sparse one-based name/description/fields, with CIINIT's dedicated profile registry], **CGINIT (851 sparse gallery images)** [numeric: full image, optional save/stage preview, thumbnail sheet/slot, and variant ordinal in a reserved 2,000-row layout], **ALINIT (107 sparse alchemy recipes)** [numeric: output, level/story gates, point cost, and four paired ingredient slots in a reserved 1,000-row layout], **AFINIT (13 authored affinity rows plus tuning/facility curves)** [name/footer specialization], **CTINIT (five 70-cell name-entry pages)** [string-matrix specialization], **CVINIT (13 character-voice settings)** [numeric: preview assets, slot-to-unit joins, and inverse suppression-setting map], **LAINIT (20 shipped terrain definitions)** [name: sparse strings, topology/rendering, combat-stat, traversal-skill, and texture-fallback joins], **MPINIT (1,472 sparse terrain rows joined to 66 stage maps)** [footer: 53-column doubled-coordinate atlas], **STINIT (74 stages)** [mixed: selector-dispatched strings/scalars/buffer cells/footer arrays], **CCINIT (71 class-change rules over 33 units)** [rules: unit/level/state predicates plus title/cost/stat/skill effects], **SCINIT (1,209 final decision rows)** [dispatch: scene resource plus authored chapter metadata and overwrite history], and **RTINIT (172 routine sets)** [banked: twenty movement/battle step banks, provider joins, and overwrite history]. Validated; see `build/data/README.md`. Raw addresses remain bytecode provenance; confirmed semantics come from `vm-map/globals.toml`.
+- [x] **2.2 — `*INIT` data and rule sources → JSON.** `tools/extract_init.py` auto-detects shape (`name`/`numeric`/`footer`/`mixed`/`rules`/`dispatch`/`banked`) → **SKINIT (131 skills), ITINIT (287 items), EBINIT (277 units), OBINIT (46 object definitions), CIINIT (24 character-information profiles)** [name: sparse one-based name/description/fields, with CIINIT's dedicated profile registry], **CGINIT (851 sparse gallery images)** [numeric: full image, optional save/stage preview, thumbnail sheet/slot, and variant ordinal in a reserved 2,000-row layout], **ALINIT (107 sparse alchemy recipes)** [numeric: output, level/story gates, point cost, and four paired ingredient slots in a reserved 1,000-row layout], **AFINIT (13 authored affinity rows plus tuning/facility curves)** [name/footer specialization], **CTINIT (five 70-cell name-entry pages)** [string-matrix specialization], **CVINIT (13 character-voice settings)** [numeric: preview assets, slot-to-unit joins, and inverse suppression-setting map], **LAINIT (20 shipped terrain definitions)** [name: sparse strings, topology/rendering, combat-stat, traversal-skill, and texture-fallback joins], **MPINIT (1,472 sparse terrain rows joined to 66 stage maps)** [footer: 53-column doubled-coordinate atlas], **SPINIT (eight 15-slot H-scene gallery pages)** [numeric: INIT2 thumbnail-sheet and SYS4INI scene joins], **STINIT (74 stages)** [mixed: selector-dispatched strings/scalars/buffer cells/footer arrays], **CCINIT (71 class-change rules over 33 units)** [rules: unit/level/state predicates plus title/cost/stat/skill effects], **SCINIT (1,209 final decision rows)** [dispatch: scene resource plus authored chapter metadata and overwrite history], and **RTINIT (172 routine sets)** [banked: twenty movement/battle step banks, provider joins, and overwrite history]. Validated; see `build/data/README.md`. Raw addresses remain bytecode provenance; confirmed semantics come from `vm-map/globals.toml`.
 - [x] **2.3 — Extract `STINIT`'s 74 sparse stage records.** The mixed mode identifies the dominant `scjump_progress_a` dispatch, recovers 29 preallocated buffer layouts (including six consumer-confirmed row strides), and keeps four condition strings, six scalars, fixed-buffer writes, and all 1,396 footer-array copies separated by stage id. Profiles supply population/value and direct-consumer evidence. Header/map semantics cover conditions, BGM, turn/replay/clear-reward settings, and map texture overrides. The object join assembles 2,312 placements with type/position/gates, OBINIT names and available descriptions, 604 reinforcement schedules, and typed initial-faction, teleport, treasure, card-list, non-triggering-faction, and initial-object-state payloads; FIELD's dedicated special-spawn path proves the final three populated type-27 tagged writes are engine-dead, so they remain visible as ignored provenance rather than unresolved semantics. The 30-cell enemy family contributes 1,378 joined spawns with unit/faction, placement, difficulty/story gates, level scaling, weighted selection, difficulty-specific movement/battle routine sets, and 485 first-clear-only gates. Raw address views remain alongside generated `semantic_fields`.
 - [x] **2.3a — Extract `CCINIT`'s 71 class-change rules.** Rules mode preserves source-order guards and detects the unit id, minimum level, clear applied-state slot, selected title/level, deployment-cost delta, named fourteen-stat bonuses, awarded SKINIT skills, and state slot set by each rule. EBINIT/SKINIT definition joins and the common global semantic projection coexist with raw addresses. CALCCC/ADDEXP establish the apply/report ABI; EVOLVE explains the two level-independent empty-title Lily rules. The generated profile covers 33 units, 69 titled rules, 30 skill awards, three used promotion slots, and 19 populated output fields.
 - [x] **2.3b — Extract `SCINIT`'s scene-dispatch registry.** Dispatch mode recognizes 2,179 alternating writes to two 10,000-cell arrays, preserves all 710 overwritten decision ids, and emits 1,209 final rows. The primary column maps decisions to 135 packed SYS4INI ids, all resolved to numbered SC scripts; the parallel column is authored chapter metadata. All 847 live SCJUMP decisions join to rows and 844 final chapter tags agree with the independently decoded paths; three legacy/stale mismatches remain explicit.
@@ -63,8 +63,9 @@
 - [x] **2.3f — Extract `CVINIT` character-voice settings.** Numeric specialization accounts for all 37 static writes as thirteen preview OGG assets, twelve CONFIG-setting-slot-to-EBINIT-unit joins, and the exact inverse unit-to-suppression-setting map. CONFIG proves preview, row-label, persisted speaker-seen unlock, and setting-edit behavior; the shared CNINIT/CVINIT voice chain proves the inverse map.
 - [x] **2.3g — Extract `MPINIT`'s stage-terrain atlas.** Footer specialization classifies all 1,472 row copies as columns 1..50 of one stride-53 sparse atlas, with destination-derived grid Y=2..1600 and 127 implicit-zero rows. FIELD proves that STINIT2's tile bounds are doubled before copying into the mutable current-stage grid. The schema joins 66 stage definitions to 53 unique rectangles, preserves eight shared-map groups and 47 border-context cells, and resolves terrain ids through LAINIT's names, texture slots, area-fill flags, and layout classes.
 - [x] **2.3h — Extract `LAINIT`'s terrain definitions.** Name specialization classifies all 98 instructions into twenty shipped terrain ids inside a reserved thirty-row registry: seventeen names, five effect descriptions, four parallel terrain arrays, a ten-column signed combat-stat matrix, five SKINIT traversal/reveal requirements, and ten SYS4INI-resolved shared texture fallbacks. CALCBTPARAM, MVSEEK, FIELD, INFOAF, and DRAWMAP prove the complete consumer contract.
+- [x] **2.3i — Extract `SPINIT`'s H-scene gallery registry.** Numeric specialization classifies all 118 writes as eight fifteen-slot HMODE pages with two implicit trailing zero cells. Every row joins to INIT2's `SO027A` through `SO027H` thumbnail sheet and every populated cell resolves to an `SP*.BIN` resource. HMODE proves the opcode-0x19d availability-filter and indirect-call contract.
 - [x] **2.4 — Partial global-var map BUILT + wired into the disassembler.** `tools/global_map.py` → `build/global-var-map.{json,md}` (16,354/49,435 globals labelled: string tables, `*INIT` field arrays, 122 record tables w/ strides, current-entity index pointers). `sys4load` renders the labels inline (`=rec[s30]`, `=current-entity-index?`). See `docs/name-resolution.md`.
-- [ ] **2.5 — Grow the global-var map (future, incremental).** Static first: RTINIT is closed at 1,043/1,043 movement steps; the RECOVER/ILINIT condition ABI, ALINIT recipes, AFINIT affinity/progression tables, CTINIT name palette, CVINIT character-voice registry, LAINIT terrain definitions, and MPINIT stage-terrain atlas are closed; ITMES/SKMES/VIMES/EIMES/CIMES/MAMES are joined to their definitions; and the non-table INFOMES/MES ABIs are classified. Next, decode SPINIT's 118 populated cells as HMODE's stride-15 resource matrix, then use Frida only for semantics static consumers cannot settle. Full detail: `docs/name-resolution.md` → "Future step — growing the map". Packed `call-script` ids, SCJUMP decision-to-scene dispatch, the shipped RTINIT movement-provider join, and the six completed message joins are resolved.
+- [ ] **2.5 — Grow the global-var map (future, incremental).** Static first: RTINIT is closed at 1,043/1,043 movement steps; the RECOVER/ILINIT condition ABI, ALINIT recipes, AFINIT affinity/progression tables, CTINIT name palette, CVINIT character-voice registry, LAINIT terrain definitions, MPINIT stage-terrain atlas, and SPINIT H-scene gallery are closed; ITMES/SKMES/VIMES/EIMES/CIMES/MAMES are joined to their definitions; and the non-table INFOMES/MES ABIs are classified. Next, audit TRINIT's compact mixed string/numeric ritual/action registry, then use Frida only for semantics static consumers cannot settle. Full detail: `docs/name-resolution.md` → "Future step — growing the map". Packed `call-script` ids, SCJUMP decision-to-scene dispatch, the shipped RTINIT movement-provider join, and the six completed message joins are resolved.
 
 ## Phase 3 — Name the unnamed opcodes *(top ~20 BEFORE Phase 4; the rest on demand)*