* feat(plugins): add auth capability for plugin-provided OIDC/SAML login
Plugins can now authenticate a visitor against an external IdP (OIDC/SAML)
and contribute a login button to the pre-auth screen:
- new `auth` manifest capability + a capability-gated X-Kandev-Auth-Login
webhook-response directive; the host mints the kandev_session (ADR 0050),
the plugin never receives the raw token. Plugin-set Set-Cookie is dropped.
- auth.Service.AuthenticateExternal: existing-identity / link-by-email / JIT
member provisioning; refuses to auto-link to an admin; verified-email is
the plugin's contract.
- auth_providers manifest block + plugins.SSOProviders() populate the
anonymous boot payload (auth.ssoProviders); the login page renders a
"Continue with <provider>" button per provider.
- ADR 0050 + plugin-manifest / plugin-authoring / auth spec docs.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* docs: exclude publish_review_findings_kandev from public-docs coverage
The native code-review agent (#1957) added the publish_review_findings_kandev
MCP tool but did not update docs/public/coverage.json; that PR did not touch
docs/public so the path-filtered validator never ran. It's an internal review
reporting tool, not a user-facing feature, so record it as an exclusion.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(plugins,auth): address review on SSO directive and JIT provisioning
- takeAuthLoginDirective strips every case variant of X-Kandev-Auth-Login and
rejects (403) when a plugin sends more than one, so no variant leaks to the
browser and login never uses a nondeterministically-picked assertion.
- provisionExternalUser rolls back the just-created user when the identity
insert fails (transient error or a lost UNIQUE(provider,subject) race) and
resolves to the winning identity, so no account is left without a login and
no email is reserved by an unusable row. Adds userstore.DeleteUser.
- auth spec: mark the login-page SSO buttons + provider discovery as landed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* docs: drop redundant coverage exclusion; main now covers publish_review_findings_kandev
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Kandev Agent <agent@kandev.dev>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Clément Fiere