chore(cache): bump database schema version to 13

[branchseer]

Increments the SQLite database schema version from 12 to 13 to invalidate existing caches. This ensures that any cached data from previous versions is discarded and regenerated with the current schema.

Changes

• Updated PRAGMA user_version from 12 to 13 in the database initialization path
• Adjusted version range checks: versions 1-12 now trigger a reset, and version 13 is the current version
• Versions 14+ are treated as from a newer/incompatible version

This is a routine cache invalidation bump, likely accompanying other changes documented in the changelog entry about filter behavior and task command shorthands.

https://claude.ai/code/session_014GJcPFA2riNUVobvPFKs7s