396eb82c1a
Sub-track 1 of the 5-sub-track result_migration_20260616 campaign. Audit-driven research task: classify 43 ambiguous exception-handling sites (24 UNCLEAR + 19 INTERNAL_RETHROW across 11 files) and update the audit script's heuristics. No production code change. Scope: 11 files, 43 sites, T-shirt S. The per-site decisions feed sub-tracks 2-4 (small_files, app_controller, gui_2) as their starting migration scope. Files: spec.md, plan.md, metadata.json, state.toml under conductor/tracks/result_migration_review_pass_20260617/. Row added to conductor/tracks.md.