Extract and profile STINIT stage records

docs/vm-mapping-plan.md

@@ -53,8 +53,8 @@
 
 - [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 tables → JSON.** `tools/extract_init.py` auto-detects table shape (`name`/`numeric`/`footer`) → **SKINIT (129 skills), ITINIT (189 items), EBINIT (277 units)** [name: name+desc+fields], **CGINIT (379 CG entries)** [numeric: index-keyed columns], **MPINIT (1472 map records)** [footer: 50-value arrays from the file footer]. Validated; see `build/data/README.md`. Column addresses are raw engine globals — naming them (attack/cost/…) needs the global-var map (Phase 3-adjacent).
-- [ ] **2.3 — `STINIT` (74 stages) needs a bespoke parser.** Heterogeneous per-stage `copy-to-global` param blocks + a variable number of clear-condition strings per stage — fits none of the three auto modes. Its clear-condition text is already in `build/text/STINIT.strings.txt`; only the per-stage numeric params await a custom extractor. Low priority (stages are also encoded in the SC-scene scripts).
+- [x] **2.2 — `*INIT` data tables → JSON.** `tools/extract_init.py` auto-detects table shape (`name`/`numeric`/`footer`/`mixed`) → **SKINIT (131 skills), ITINIT (287 items), EBINIT (277 units)** [name: sparse one-based name/description/fields], **CGINIT (379 CG entries)** [numeric: index-keyed columns], **MPINIT (1472 map records)** [footer: length-prefixed arrays], and **STINIT (74 stages)** [mixed: selector-dispatched strings/scalars/buffer cells/footer arrays]. 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. The generated profile supplies population/value and direct-consumer evidence; victory/defeat lines, stage BGM, turn limit, and expiry outcome are curated.
 - [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: fold in `*MES` writers; label 2D record tables by their reader scripts. Then Frida to name *which stat* each field is. Full detail: `docs/name-resolution.md` → "Future step — growing the map". Also deferred: `call-script` id→name resolution (engine-level — SCJUMP.BIN decode or Frida; see `docs/name-resolution.md` #1).