fix(workouts): recognize trail running and repair code 7 history

[lingcang728]

Fixes #24.

Zepp cloud-history code 7 was mapped using the Zepp OS device-protocol meaning, open_water_swimming. It now normalizes to trail_running, so the activity label and JSON, GPX and FIT exports reflect trail running automatically.

The evidence is visualcurrent's September 9 comment: the ZeppBridge screenshot shows raw code 7 and no correction; the matching Zepp screenshot identifies an Amazfit Balance trail run. The supplied JSON confirms numeric_mapped, and the official Zepp GPX identifies the same activity as Trail running. Both screenshots and the export snippets were checked. Tests reconstruct minimal cloud-shaped inputs from that evidence; the comment did not include a complete raw cloud response. No personal identifiers or GPS coordinates from the report are committed.

• Update the shared catalog with the evidence link. Keep Open Water Swimming available for explicit names and manual corrections without inventing an unverified replacement cloud code; preserve pool-swimming code 14.
• Add schema migration 22 to repair existing numeric_mapped code-7 swimming rows, including libraries whose raw payloads have expired. Only the stored interpretation changes; user overrides, metrics, routes and sync timestamps remain intact. Existing migration locking, transaction and pre-upgrade backup apply.
• Advance the normalizer to v24. Upgrade from v23 replays workout summaries only; older upgrade paths still include their required streams.
• Cover numeric/string code inputs, swimming non-regression, historical repair without raw data, replay/override preservation, English/Chinese labels, and JSON/GPX/FIT output (including decoding FIT sport/sub-sport as Running/Trail).

Validation: workspace Rust tests (389 passed, 1 pre-existing ignored), Clippy with warnings denied, rustfmt, frontend build/tests (110 passed), Functions tests (33 passed), version/docs/i18n checks and bundle budget. Also ran the compiled Windows CLI against an isolated on-disk v21 library with no raw payloads: verified migration, exact preservation of all other workout columns, routes, the original v21 backup, JSON/GPX/FIT exports and idempotent replay.

Reporter-device retesting remains for the eventual release. Existing export files must be exported again. This PR is ready for the maintainer to review and merge; no release is published here.