[RetroGameDeveloper]

Summary

• Add bounded local integer widening, candidate-owned callee prototype repairs, integer lifetime splits/merges, and branch/call/goto/switch layout candidates.
• Share them through autopilot, the permuter, iterative/deep search, and explicit try_local_repairs families in both ROM and imported-project modes.
• Prioritize relevant families using mismatch evidence; document bounds and limitations.

Safeguards

• No shared header writes, compiler downloads, AI requests, judge changes, or edits to matched functions.
• Reject unsupported shadows, escaped locals, conditional/ambiguous prototypes, unsafe fallthrough, and loop/jump crossings where applicable.
• These are compiler-checked hypotheses, not a proof of equivalence. Improved scores stay drafts; only the existing exact judge accepts matches.

Validation

• 41 focused tests, including real pinned MIPS compiler checks recovering exact objects for synthetic local-width and callee-prototype mistakes.
• Shared candidate generation checked for MIPS, PowerPC, x86, ARM, and Thumb; explicit local repair path checked in ROM and imported-project modes.
• Private regional racing-game replay: 114 unique compiler/judge trials, zero compile failures. Earlier 966-instruction candidate improved from 90.34% to 92.16% (score 9329 to 7574) through terminal-leaf duplication, lifetime merging, and branch-call distribution. Latest 96.57% candidate retained unchanged; no new exact match. No game code/data is included here.
• Full local suite: 2084 passed, 156 skipped (543 seconds), using installed pinned compilers and the open-source demo prerequisites. Ruff, git diff --check, and node tests/gui_progress.js pass.
• GitHub Linux and Windows checks pass; macOS jobs are still pending at the time of this update.
• macOS application package builds successfully.

Limits

This is a bounded local search, not exhaustive CFG reconstruction or all possible C programs. Prototype edits are limited to declarations inside the submitted source; conflicting shared declarations still need review. Search budgets still apply.