chore: rename repo mana-monorepo → managarten

Phase-3-Rename des ehemaligen Multi-App-Monorepos zum eigenständigen
Produkt-Repo. Verein heißt mana e.V., Plattform-Domain bleibt mana.how,
apps/mana/ bleibt unverändert — nur der Repo-Container kriegt den
neuen Namen "managarten" (Garten der mana-Apps).

Geändert:
- package.json#name + #description
- README.md (Titel + erster Absatz)
- TROUBLESHOOTING.md
- alle Mac-Mini-Skripte (Pfade ~/projects/mana-monorepo → ~/projects/managarten)
- COMPOSE_PROJECT_NAME-default in scripts/mac-mini/status.sh
- .github/workflows/cd-macmini.yml + mirror-to-forgejo.yml
- apps/docs (astro.config.mjs + content)
- .claude/settings.local.json (Bash-Permission-Pfade)
- alle docs/*.md Pfad-Referenzen
- launchd plists, .env.macmini.example, infrastructure/

Forgejo-Repo + GitHub-Repo bereits via API umbenannt. Lokales
Verzeichnis-Rename + Mac-Mini-Cutover folgen separat.

.github/workflows/cd-macmini.yml

@@ -55,7 +55,7 @@ concurrency:
   cancel-in-progress: false  # Don't cancel in-progress deploys
 
 env:
-  PROJECT_DIR: /Users/mana/projects/mana-monorepo
+  PROJECT_DIR: /Users/mana/projects/managarten
   COMPOSE_FILE: docker-compose.macmini.yml
   ENV_FILE: .env.macmini
   DOCKER_BUILDKIT: 1

.github/workflows/mirror-to-forgejo.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - name: Mirror to Forgejo via SSH
         run: |
-          cd /Users/mana/projects/mana-monorepo
+          cd /Users/mana/projects/managarten
 
           # Stash any local changes so pull never fails
           git stash --quiet 2>/dev/null || true
@@ -25,5 +25,5 @@ jobs:
 
           # Push to Forgejo via localhost SSH (runner is on the Mac Mini)
           GIT_SSH_COMMAND='ssh -p 2222 -i ~/.ssh/id_ed25519 -o StrictHostKeyChecking=no' \
-            git push ssh://git@localhost:2222/till/mana-monorepo.git main 2>&1
+            git push ssh://git@localhost:2222/till/managarten.git main 2>&1
           echo "Mirrored to Forgejo"