Super Mario RPG v0.0.2 - coverage QA patch

Patch release for a full production playthrough and coverage/QA pass. This is
still preview quality: automated qualification is strong, but the game has
not yet been verified end to end by a human playthrough.

What's new

• Loss-resistant dispatch-miss capture. Production builds now record the
  complete recompiler-actionable miss key (site, target, M/X, kind): direct
  dispatch/bank misses and call/jump gaps discovered while interpreting.
• Append-only crash recovery. Each distinct miss is appended to a JSONL
  journal and flushed before its missing target executes. A crash or forced
  termination can therefore leave useful coverage even when the final report
  was never written.
• No cross-run overwrite. With the default settings, every launch creates
  a unique timestamp-and-PID .json manifest and matching .jsonl journal.
  The in-memory set grows as needed instead of silently stopping at the former
  4,096-tuple ceiling.
• Merge tooling and guardrails. tools/merge_tier2_coverage.py accepts
  clean-exit manifests and recovery journals, preserves pending outcomes, and
  rejects torn journal lines. The new behavior has dedicated automated tests.
• Current shared dependencies. The game pins the validated capture runtime
  (snesrecomp 4fa1b57), current launcher (recomp-ui ca27c83), and its
  current networking dependency (recomp-net 6d848d6).

Playthrough artifact checklist

1. Use this unmodified Production release and leave
   SNESRECOMP_TIER2_MANIFEST and SNESRECOMP_TIER2_JOURNAL unset.
2. Keep every tier2_super_mario_rpg_<UTC>_p<PID>.json and matching .jsonl
   file produced beside the executable/AppImage. Do not rename files into one
   another or discard earlier sessions.
3. For a normally ended session, submit its final .json. If the session
   crashed or was killed before that file appeared, submit its same-stem
   .jsonl instead. Do not submit both files from the same session for merging
   because the final manifest already contains the journal's evidence.
4. Keep crash reports and last_run_report.json separately as ordinary QA
   evidence; g_dispatch_log is diagnostic-only and is not a coverage input.

A complete collection should report overflowed_tuples: 0 and
journal_write_failures: 0. If either counter is nonzero, retain all files and
report it with the run diagnostics.

Validation

• Framework C harness: all tests passed, including 4,354 distinct synthetic
  tuples (beyond the old fixed cap), pre-execution journaling, unique output
  paths, and abnormal-exit recovery behavior.
• SMRPG merger tests: all passed, including union/deduplication and rejection
  of a torn JSONL record.
• Native Windows Production desktop and headless builds succeeded. Three
  normal runs produced exact manifest/journal sets with zero capture failures;
  a forced termination preserved all 104 flushed records without a final
  manifest.
• A deterministic one-count audio underrun in the 3,600-frame headless gate is
  unchanged from v0.0.1's framework pin and is tracked separately; the
  599-frame smoke gate passes.

Known limitations

• The video output and full game flow still need the human playthrough this
  release is intended to support.
• Static recompilation coverage remains small (2 qualified exact AOT variants);
  other code continues through the correctness-floor interpreter.
• Gamepad bindings remain fixed in code. The launcher and keybinds.ini edit
  keyboard bindings only.
• The game has no repo-owned config.ini; launcher settings and rom.cfg live
  beside the executable.

Install

Extract the Windows zip or make the Linux AppImage executable, place your own
verified Super Mario RPG (USA) ROM beside it, and run it. The ROM is not
included; expected hashes are documented in the README.