Analysis cache redesign:
- Remove Hive persistence from AnalysisCacheService entirely
- Use Map<String, SakeAnalysisResult> in-memory instead of Hive boxes
- Cache now lives only for the duration of an app session; restart always
produces a fresh analysis — no stale misidentifications can persist
- Remove Hive init(), TTL/cleanupExpired(), getCachedByBrand() dead code
- API surface unchanged: callers (gemini_service, dev_menu) need no edits
- main.dart: delete legacy Hive boxes (analysis_cache_v1, brand_index_v1)
from disk on startup for existing users
- dev_menu_screen: update cache description text to reflect new behavior
Rationale:
- Camera captures always produce unique files -> cache hit rate was ~0%
- Each user supplies their own Gemini API key -> no shared cost benefit
- Persistent wrong results (e.g. misrecognized brand names) could survive
up to 30 days under the old design
- Different sake editions photographed separately have different hashes
and were never affected by the cache in the first place
Made-with: Cursor
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