Manage integrations only supported add/toggle/delete — fixing an
expired API token meant deleting and recreating the whole integration.
- New GET /api/integrations/:id/config returns only the non-secret
config fields (never the decrypted secret) so an edit form can
pre-fill URL/tailnet/etc. fields.
- New POST /api/integrations/:id/test merges the stored, decrypted
config with any freshly-typed overrides and pings the real adapter —
lets "Test connection" work during an edit without ever sending the
current secret back to the browser.
- New IntegrationEditForm component: secret fields render blank with a
"leave blank to keep the current value" placeholder; submitting only
sends the fields that were actually filled in, so a name/URL edit
can't accidentally wipe a secret and a secret rotation can't touch
anything else. Reuses the existing PATCH /:id route, which already
merged partial config updates correctly.
Verified end-to-end against the real dev server: confirmed via direct
DB decryption that a non-secret-only edit leaves the stored secret
byte-for-byte unchanged, and that a secret-only edit rotates it without
touching other config; the test route was confirmed to make a real
network call (got a genuine "API token invalid" from Tailscale's API
against a fake key).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>