Files
librenotes/cmd
libretechandClaude Opus 4.7 274c7054d0 Add JWT session client and tenant-scoped storage
cmd/librenotes/web/public/auth-client.js exposes window.authClient
with the full session API used by the rest of the frontend:

Session storage (#14):
- saveSession / loadSession / clearSession / isAuthenticated
- Backed by sessionStorage, not localStorage: tokens are isolated
  per tab and cleared on tab close. localStorage would survive
  tab close on a shared device, which we want to avoid.
- loadSession returns null when expires_at has passed, so callers
  treat expired sessions as logged-out without a network round
  trip.

API wrapper (#14):
- apiFetch(url, init) attaches Authorization: Bearer <jwt> to
  every call. On 401 it clears the session and redirects to
  /login.html?next=<current-path> so the user returns where they
  started. Throws after the redirect so the caller's .then does
  not run with stale data.

Tenant-scoped localStorage (#15):
- tenantStore() returns a get/set/remove wrapper whose keys are
  prefixed "librenotes:{user_id}:". Two users on the same browser
  therefore have fully independent UI state. JSON serialisation
  with try/catch fallbacks for corrupted or quota-exceeded
  storage so a bad blob never crashes the app.
- clearTenantStore(userID) removes every key with that prefix.
  Called from clearSession() so logout wipes both the JWT and
  the user's preferences.

verify.html + verify.js complete the magic-link flow: read
?token=, POST /auth/verify, hand the response to saveSession(),
strip the token from the URL via history.replaceState. Errors
route the user back to /login.html.

app.html + app.js are a minimal authenticated landing demonstrating
the full stack end-to-end: apiFetch hits /api/whoami, tenantStore
persists a theme preference, logout clears both. The full notes
UI is left to a later phase — this is the seam.

Closes #14 and #15.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-28 22:25:07 +02:00
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