Decode battle animation tables

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], **SPINIT (eight 15-slot H-scene gallery pages)** [numeric: INIT2 thumbnail-sheet and SYS4INI scene joins], **TRINIT (21 training actions)** [name/string-matrix: eligibility, cost, stat/alignment/progress effects, rewards, and ten event slots], **CDINIT (nine weighted card-generation lists)** [numeric/dispatch specialization], **CDINIT2 (81 card definitions)** [name: story gates, typed effects, and item/event/condition/visual 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] **2.2 — `*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], **TRINIT (21 training actions)** [name/string-matrix: eligibility, cost, stat/alignment/progress effects, rewards, and ten event slots], **CDINIT (nine weighted card-generation lists)** [numeric/dispatch specialization], **CDINIT2 (81 card definitions)** [name: story gates, typed effects, and item/event/condition/visual joins], **BTANINIT (202 battle effects)** [numeric/dispatch: visual/audio/atlas/hit-pulse work records], **BTANINIT2 (122 battle-animation timelines)** [numeric: six effect ids, delays, duration, and skill/weapon 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.
@@ -67,8 +67,9 @@
 - [x] **2.3j — Extract `TRINIT`'s training-action registry.** Name/string-matrix specialization classifies all 365 instructions into 21 six-text-slot actions and nineteen contiguous numeric families. TRAIN proves story/level/alignment/progress/stat/item/skill gates, spirit and fourteen-stat effects, fractional alignment/progress changes, rewards, execution counts, and event dispatch. ITINIT/SKINIT resolve every gate and reward; all 75 event cells resolve through SCINIT, while GAMESTART proves their restored story-flag role.
 - [x] **2.3k — Extract `CDINIT`'s card-generation lists.** Numeric/dispatch specialization classifies all 1,565 instructions into nine selectors and 383 weighted candidates, joins every card to CDINIT2, and links seven live selectors to 246 STINIT card objects. FIELD proves the turn-scaled cumulative selection rule, 100-slot scan, 50-slot clear prefix, and two-column effective required-story-gate contract.
 - [x] **2.3l — Extract `CDINIT2`'s card definitions.** Name specialization classifies all 558 instructions into 81 cards inside a reserved 100-row registry. FIELD proves six type-specific effect paths and the engine-dead third required-flag column; ITINIT, SCINIT, ILINIT, and SYS4INI resolve all item, event, condition, and visual references, while STAGECLEAR proves the deferred point-award accumulator.
+- [x] **2.3m — Extract `BTANINIT`/`BTANINIT2`'s battle-animation registry.** BTANINIT2 specialization classifies all 1,018 instructions into 122 sparse six-effect timelines, 573 effect references, paired start delays, and 111 complete durations. BTANINIT dispatch specialization classifies all 4,472 instructions into 202 visual/audio/hit-pulse definitions. BTL proves movie/sprite playback, blend, anchor, geometry, sound, and pulse semantics; SKINIT/ITINIT resolve skill and weapon-class selection.
 - [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, MPINIT stage-terrain atlas, SPINIT H-scene gallery, TRINIT training actions, and CDINIT/CDINIT2 card selection/effects are closed; ITMES/SKMES/VIMES/EIMES/CIMES/MAMES are joined to their definitions; and the non-table INFOMES/MES ABIs are classified. Next, audit BTANINIT/BTANINIT2's battle-animation registry and direct consumers, 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, SPINIT H-scene gallery, TRINIT training actions, CDINIT/CDINIT2 card selection/effects, and BTANINIT/BTANINIT2 battle animations are closed; ITMES/SKMES/VIMES/EIMES/CIMES/MAMES are joined to their definitions; and the non-table INFOMES/MES ABIs are classified. Next, audit STINIT2's remaining stage-definition columns and consumers, 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)*