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Oleksandr Bezdieniezhnykh
581dff206e
AZ-357 — eliminate year-based tile cache expiry (LF-1): - Migration 012: drop 5-col unique index, dedupe by (lat,lon,zoom, size) keeping max(updated_at), add new 4-col unique index, make version column nullable + drop default. Column itself preserved per coderule (column drops require explicit confirmation; tracked in AZ-373 / C20). - TileEntity.Version, TileMetadata.Version, DownloadTileResponse. Version: int -> int? (HTTP shape preserved; field still in JSON). - TileService.DownloadAndStoreTilesAsync: drop currentVersion year computation and the .Where(t => t.Version == currentVersion) cache filter. BuildTileEntity: drop year arg; write Version=null. - TileRepository: ON CONFLICT now 4-col; lookup queries ORDER BY updated_at DESC instead of version DESC. - Tests: replace inverted BT02b with positive AZ357_AC1 (prior-year cached tile is reused). Add BuildTileEntity_ DoesNotPopulateVersion_AZ357 to enforce the no-write contract. - 69 unit + 5 smoke + 3 stub-contract integration tests pass. Cumulative code review (batches 7-9, 7 tasks): VERDICT=PASS. Report at _docs/03_implementation/reviews/batch_09_review.md. Zero Critical/High/Medium/Low findings. Architecture baseline remains clean. Co-authored-by: Cursor <cursoragent@cursor.com>