[codex] Sort NavLog radio frequencies by route order

[msupino]

Summary

• Sort the NavLog comm-change frequency list by each callout route waypoint index.
• Keep unmapped frequency notes stable after mapped route frequencies.
• Prevent known route waypoints from snapping to a different nearby comm-change point at low zoom.
• Add regression tests for route-order sorting and the Herzliya -> Beer Sheva Country Club false positive.

Root cause

The NavLog frequency list was built directly from state.notes, so it followed note insertion/storage order instead of the order a pilot reaches those waypoints.

A second issue caused the Herzliya -> Beer Sheva template to show Country Club / Herzliya at the end: comm-change auto-seeding used screen-pixel distance to match a route waypoint to a comm-change point. At fit zoom, the known waypoint HTZUK was close enough on screen to the known comm point KNTRY, so the reverse-route Country Club frequency was created as an unmapped note and then sorted last.

Validation

• node --check docs/app/draw.js
• node --check docs/app/io.js
• node --check tests/nav-log.spec.js
• git diff --check
• npx playwright test tests/nav-log.spec.js

Fixes #778

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https://msupino.github.io/NavigationApp/branch/codex/navlog-freq-route-order/

Commit: 55ac9a4