feat(web): manage custom ingest keys in ingestion settings - #1520

🟢 Confidence 9/10 · safe to merge
The only change since the last review moves useIngestKeyCrumbs above the retired-tab redirects, where it now runs unconditionally; no test pins the ordering.
_{quality 100/100 · no findings · tests partial · risk low}

SettingsPage now reads the ingest-key crumbs before the retired-tab redirects, so /settings?tab=developer and its neighbours no longer render a different number of hooks. The hook ordering fix is the whole change since the last review; safe to merge.

• useIngestKeyCrumbs runs unconditionally at the top of SettingsPage, before the legacy-tab Navigate returns

Fixed since the last review

• ✅ F2 · useIngestKeyCrumbs runs after the legacy-tab early returns and crashes /settings?tab=developer

Production impact

_{8546136 · Updated on every push. Reply "won't fix" to dismiss a finding, or mention @maple-review-bot to ask about one.}