Remove mikado frontmatter from closed chains, clarify finalization rules

During finalization, all mikado frontmatter (requires, status, branch) should
be removed — cards become plain documentation linked via wiki-links. Updated
agent-change-process docs and cleaned up 10 cards from closed chains. Also
fixed ai-docs referencing deleted plans/ files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/how-to/authentik/authentik-api-client-generation.md

@@ -2,8 +2,6 @@
 title: Generate Authentik API Clients
 modified: 2026-03-01
 last-reviewed: 2026-03-01
-requires:
-  - mirror-authentik-build-deps
 tags:
   - how-to
   - authentik

docs/how-to/authentik/authentik-go-server-derivation.md

@@ -2,9 +2,6 @@
 title: Build Authentik Go Server
 modified: 2026-03-02
 last-reviewed: 2026-03-02
-requires:
-  - authentik-api-client-generation
-  - authentik-python-backend-derivation
 tags:
   - how-to
   - authentik

docs/how-to/authentik/authentik-python-backend-derivation.md

@@ -2,8 +2,6 @@
 title: Build Authentik Python Backend
 modified: 2026-03-01
 last-reviewed: 2026-03-02
-requires:
-  - mirror-authentik-build-deps
 tags:
   - how-to
   - authentik

docs/how-to/authentik/authentik-web-ui-derivation.md

@@ -2,8 +2,6 @@
 title: Build Authentik Web UI
 modified: 2026-03-01
 last-reviewed: 2026-03-02
-requires:
-  - authentik-api-client-generation
 tags:
   - how-to
   - authentik

docs/how-to/authentik/build-authentik-from-source.md

@@ -2,10 +2,6 @@
 title: Build Authentik from Source
 modified: 2026-03-01
 last-reviewed: 2026-03-02
-requires:
-  - authentik-go-server-derivation
-  - authentik-web-ui-derivation
-  - authentik-python-backend-derivation
 tags:
   - how-to
   - authentik

docs/how-to/authentik/deploy-authentik.md

@@ -2,11 +2,6 @@
 title: Deploy Authentik Identity Provider
 modified: 2026-02-23
 last-reviewed: 2026-02-23
-requires:
-  - build-authentik-container
-  - provision-authentik-database
-  - create-authentik-secrets
-  - migrate-grafana-to-authentik
 tags:
   - how-to
   - authentik