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fix(app-space): persist selected track in URL for refresh + back/forward - #2950
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Navigating into a track only mutated local state, so a page refresh reset to the track list and the browser back/forward buttons did nothing. Reflect the selected track in a `track` query param via history.pushState, restore it on load, and listen for popstate so back/forward move between the list and a track. Unknown/stale ids fall back to the list. Existing eventId/theme params are preserved.
This was referenced Nov 1, 2026
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Problem
On the app-space event page (e.g.
/app-space/?eventId=10000002&theme=joule), clicking into a track only mutated local component state. Consequences:Fix
AppSpace.vuenow reflects the selected track in atrack=<id>query param:selectTrack/goBackpush history state viahistory.pushState, preserving existingeventId/themeparams.pathsload.popstatelistener syncs state so back/forward move between the list and a track.Tests
New
AppSpace.track-url.test.ts(5 cases): restore-on-load, param added on select, param removed on goBack, popstate sync, unknown-id fallback. All 9 app-space test files (35 tests) pass.