recipe-maintainer: public snapshot (secrets + deployment plans removed, single commit)

Sanitized single-commit public mirror of recipe-maintainer.
- Removed test-ssh/.testenv (live creds); added test-ssh/.testenv.example placeholders.
- Removed plans/ and planned-updates/ (deployment-planning docs) so no client/
  deployment domains appear in the public repo.
- All other secret stores were already gitignored.
- docs.coopcloud.tech retained as a submodule (public upstream).

recipe-info/immich/setup.md

@@ -0,0 +1,38 @@
+# Immich — First-Time Setup
+
+## Prerequisites
+
+- DNS: `immich.<domain_suffix>` must resolve to the server
+- **Authentik** must be deployed and running (dependency)
+
+## Steps
+
+1. **Create the app:**
+   ```bash
+   abra app new immich --server <SERVER> --domain immich.<DOMAIN_SUFFIX> --no-input
+   ```
+
+2. **Generate secrets:**
+   ```bash
+   abra app secret generate immich.<DOMAIN_SUFFIX> --all -m --no-input
+   ```
+   Save output to `recipe-info/testsecrets/immich.<DOMAIN_SUFFIX>`.
+
+3. **Deploy:**
+   ```bash
+   abra app deploy immich.<DOMAIN_SUFFIX> --chaos --force --no-input
+   ```
+
+4. **Authentik SSO integration:**
+   ```bash
+   python3 recipe-info/immich/setup_authentik_integration.py
+   ```
+   This creates an OAuth2 provider and application in Authentik, creates a test user, creates an Immich admin account via the API, and configures Immich's OAuth settings via the Immich system API.
+
+5. **Verify:** curl `https://immich.<DOMAIN_SUFFIX>` returns HTTP 200.
+
+## Notes
+
+- Credentials are saved to `recipe-info/immich/authentik-test-credentials.<DOMAIN_SUFFIX>.toml`.
+- Unlike other recipes, Immich's OAuth is configured via its admin API (not env vars), so no redeploy is needed after SSO setup.
+- OIDC test user: `testuser` / `testpass123`.