Adds edits_json column (migration v3) to store user overrides separately
from detail_json so Option A server re-extraction never clobbers them.
- Tap the title in the detail screen to edit (local activities only, shown
with a ✎ hint). Saves on keyboard dismiss via onEndEditing.
- Cards and search display user_title ?? title.
- Raw upload: user_title sent to server -> sidecar written so web UI shows
the correct title (server re-extracts from FIT, which has Karoo's title).
- BAS upload: detail.title overridden before sending, no sidecar needed.
- Import tab now accepts multiple files at once (DocumentPicker multiple:true),
processes them sequentially through Pyodide, and shows a summary with per-file
errors on completion.
- DB migration v2 adds source_path column (original filesystem path before copy)
and an index on it, enabling O(1) deduplication for watch-folder imports.
- On Android, if auto_import_path is set, the Import tab scans the directory on
mount and on AppState 'active' (app foreground), then automatically imports any
FIT files not yet in the DB. Designed for Karoo: finish a ride, open the app,
new files import without any manual steps.
- insertActivity now accepts optional source_path; both importBasJson and
importNativeFile pass it through (null for files picked via DocumentPicker,
real path for watch-folder files).
Davide Scaini