Add shared apiFetch timeouts/abort/typed errors with in-flight dedupe, a
RouteState UI for loading/empty/timeout/error+retry, and wire it through
Weekend (Data Health), Championship, Driver Profile, Briefing, Live, and
Race Hub. Driver summary is local-first with bounded optional OpenF1
enrichment so a hung remote call cannot block the profile.
Spike note: parseSourceMode defaults to openf1; driver summary now treats
omitted ?source= as auto so local season data is preferred.
Co-authored-by: Cursor <cursoragent@cursor.com>
Reframe Briefing into GP-window sections with driver/team tag chips, a sticky
"since last race" header, and client-side digest helpers (gpWindows, groupByWindow,
tagItems). Overlapping inter-race windows resolve to the latest GP; undated items
land in a Recent bucket. Vitest covers digest lib + page render/filter behaviour.
Co-authored-by: Cursor <cursoragent@cursor.com>
