model: 92.19% -> 92.29% (ObjModel_LoadModelData + modelLoadAnimations exact)

[SirEnkido]

What changed

Two small plain-C changes in src/main/model.c (plus a prototype update in include/main/model.h):

• ObjModel_LoadModelData — retail calls DCInvalidateRange(model, allocSize) on the freshly mmAlloc'd, 16-aligned model buffer before loadAndDecompressDataFile decompresses into it (the standard GC pattern before a DMA/decompress into a new buffer). The size is a named local allocSize = dataLen + amapSize + 0x1f4 reused for both calls. 93.48% → 100%
• modelLoadAnimations — the animation write cursor is the u8* parameter advanced in place (buf += sz), while the model id lives in a local int id = modelId later reused for the amap data size — matching the surrounding style (hdr = model local copy). Only a register-order difference. 99.66% → 100%

Evidence

• main/main/model fuzzy (report.json, GSAE01_rev1): 92.19% → 92.29%, matched functions 73 → 75 of 85
• ninja all_source progress build/GSAE01_rev1/report.json exits 0
• Independently re-audited against AGENTS.md: no pragmas, no asm, no hardcoded addresses, no debris; only the two intended files touched

Notes for review

• Verified locally on the Rev 1 build (v1.01 is the dump I own); the changes are version-agnostic plain C and I'd expect the same result on v1.00 — CI will confirm.
• The unit's remaining gap is essentially walled: 7 functions are hand-written asm in retail (modelApplyBoneTransform/modelBoneTransforms_next custom register convention, setGQR6/7 mtspr, the three paired-single ObjModel_Transform*Vertices* loops) — asm is banned outside src/dolphin/, so left as-is. modelInitBoneMtxs/ObjModel_Blend*Stream are pure nonvolatile register-order residue after ~10 clean-C shape experiments each.
• clang-format --dry-run fails on model.c, but every violation is pre-existing on main (whole-TU brace style); this diff introduces none, and reformatting the whole TU is out of scope here.

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