220efb0d05
Three bugs fixed:
- /api/upload/bas and /api/upload/raw never updated user_dir/index.json, so
merge_all couldn't include uploaded activities in year shards — they existed
on disk but were invisible to the browser feed. Fixed by _upsert_index_summary()
called before merge_all().
- Silent catch {} in uploadLocalActivities swallowed all per-activity errors;
replaced with console.warn so failures are visible in Expo logs.
- After a server wipe, synced_at flags on the device caused "Nothing to upload"
forever. uploadFeed() now reconciles against GET /api/feed at the start of each
upload: local activities not found on the server get synced_at cleared.
Also: live upload progress ("Uploading N / M…"), failed count in result message,
onProgress callback on uploadFeed(), countPendingUploads() helper.