P0: cache completeness + cold-only splash + honest instant switching#705
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…ng, prefetch P0: an interrupted cold hydration left partial caches that the emptiness check read as warm — the daily backfill froze (missing older days) while session parsing healed gradually (drifting totals), poisoning every surface sharing the cache. Both caches now carry an explicit complete marker: partial resumes cold under the hydration lock; unmarked caches self-heal with one re-hydration. Regression test seeds the exact frozen artifact and asserts bit-for-bit convergence with a never-interrupted run. - splash indexing reveals only on genuinely cold scans (explicit cold flag in the progress protocol), never on warm incremental re-parses - uncached filter switches clear to skeleton instead of showing the previous filter's numbers; cached switches paint same-commit; background prefetch warms every detected provider after idle - build stamp (git sha + date) in splash and About ends build ambiguity - payload parity test: identical payloads on identical cache, and payload totals equal the CLI report path - Sessions empty state keeps the provider filter row; zero savings line hidden; TCC usage-description strings + Full Disk Access docs - warm profile documented: optimize scan ~1.47s dominant (safe refactor deferred), parse ~1s, aggregation ~30ms Root 1848, app 320, typechecks clean.
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Field-confirmed on two machines: partial caches from interrupted scans served as warm (drifting totals, missing chart days); indexing splash on every launch; stale numbers on filter switches. Root causes confirmed and fixed with a bit-for-bit convergence regression test that fails without the fix. Plus prefetch for instant switches, build stamps, payload parity tests, and TCC/FDA docs. Root 1848, app 320.