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The dashboard's loopback auth uses an ephemeral '_SESSION_TOKEN' that rotates on every server restart (hermes update, hermes gateway restart, etc.). A tab kept open across the restart holds the OLD token in window.__HERMES_SESSION_TOKEN__ from the previous HTML render, so every '/api/*' fetch returns '401 Unauthorized' — surfacing in the UI as 'Failed to load Kanban board: 401: Unauthorized', 'Analytics 401', etc. (#24186, #25275). Before this patch the workaround was to manually clear site data or hard-reload — annoying enough that users reported it as a regression even though the token rotation is by design (security property: stolen tokens can't survive a server restart). The HTML response already sets 'Cache-Control: no-store, no-cache, must-revalidate', so a reload reliably picks up the freshly-injected token. fetchJSON now triggers that reload automatically on the first loopback-mode 401, guarded by a sessionStorage flag so a genuine auth bug (where even the new token fails) falls through to throw on the second attempt instead of reload-looping. The flag is cleared on any 2xx so a subsequent server restart in the same tab gets its own reload cycle. Gated mode is unaffected — that path already redirects to login_url via the structured 401 envelope (Phase 6), and the new code is explicitly skipped when window.__HERMES_AUTH_REQUIRED__ is set. Refs #24186, #25275 |
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| App.tsx | ||
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| main.tsx | ||