[shaonianche]

Summary

• Replace the bundled Garmin Profile spreadsheet with 21.218.0 from garmin/fit-sdk-tools and bump SDK_VERSION
• Regenerate typed profile code, field catalog, and component registry
• Sync profile-version references in docs and test snapshots; add news/68.dep (the superseded 21.213.0 fragment is dropped, since it never shipped)

Profile delta (purely additive)

Change	Count
New messages	1 (battery, global id 104)
New fields on existing messages	157 (split, split_summary, lap, session, length, segment_lap, barometer_data)
New enum types	15 (grading scales, split_status, dive_section_type, apnea_discipline)
New enum values	19 (fenix9 family, Approach S72, exposure_lights / forto_cycling / tymewear)

Catalog counts: 124 messages / 1566 fields / 115 enum types / 164 enum fields. No messages, fields, or type values were removed.

Verification

• uv run pytest — 440 passed, 1 skipped (live Garmin JS SDK test needs FIT_JS_SDK_PATH + Node)
• uv run ruff check fit_tool and the CI mypy subset — clean
• uv run gen-profile — idempotent, no diff on rerun
• Real fixtures (palisade.fit, activity_multiple_developer_index.fit, stagesLink_25622166.fit) decode then re-encode byte-identically; a new BatteryMessage round-trips through build/parse
• uv build succeeds

Closes #68

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.72%. Comparing base (399a980) to head (3dd4834).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #69   +/-   ##
=======================================
  Coverage   92.72%   92.72%           
=======================================
  Files          36       36           
  Lines        2721     2721           
  Branches      461      461           
=======================================
  Hits         2523     2523           
  Misses        117      117           
  Partials       81       81           

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