Task groups 5 and 6 of gpx-parser-robustness.
Group 5 — packages/gpx/fixtures/*.gpx (synthetic, no personal data):
route-only, missing-coords, garbage-ele, timestamps-partial,
timestamps-mostly-invalid, multi-track, unicode-name,
namespaced-extensions, plus trimmed Komoot/Wahoo-style exports.
parse-node.test.ts gains a fixture table test that auto-discovers every
*.gpx from disk, asserts finite stats + per-fixture shape, and fails
loudly if a file has no EXPECTATIONS entry (the corpus is the regression
mechanism).
Group 6 — verification: GpxData shape unchanged; journal + planner
compile with no changes; gpx suite 98/98; full pnpm typecheck 13/13,
lint 13/13, test 11/11. Route-only + broken-file import behaviour is
covered by the fixtures + consumer compile; the browser leg rides e2e.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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