feat: initial agent-swarm-repo template

Generelles Git-Repo-Template fuer KI-Agenten-Arbeit (multi-agent swarm pattern).

Enthaelt:
- Rollen-System (Leader, Worker, Reviewer) mit Model-Routing-Matrix (Tier-basiert)
- Zwei komplementaere Loops: Feature-Loop (vorwaerts) + Audit-Loop (rueckwaerts)
- Spike-Gate fuer Research-Items (GO/NO-GO vor Produktionscode)
- Obligatorische Opus-Review-Gate nach jeder Implement-Session
- Drei ausfuehrbare Gates: session-hygiene, ownership (Cross-Edit-Schutz), doc-drift
  -- alle dormant bis zur ersten Initialisierung, dann automatisch aktiv
- Bootstrap: scripts/init.sh + session-prompts/BOOTSTRAP.md
- Worked Example (URL-Shortener-Domaene): Board, Session-Log, Audit-Finding, ADR
- Token-Hygiene (3-Tier: Session-Schnitt / Command-Disziplin / Cache-Disziplin)
- GitHub Actions CI (gates.yml) laeuft auf jedem Push/PR

Muster destilliert aus produktiv-bewaehrten Patterns des ConformalLabpp-Projekts.

.github/workflows/gates.yml

@@ -0,0 +1,16 @@
+name: gates
+on: [push, pull_request]
+jobs:
+  quality:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with: { fetch-depth: 0 }
+      - name: Session-Hygiene-Gate
+        run: bash scripts/gate-session-hygiene.sh
+      - name: Ownership-Gate
+        run: bash scripts/gate-ownership.sh
+      - name: Doku-Drift-Gate
+        run: bash scripts/gate-doc-drift.sh
+      - name: Metriken sammeln
+        run: bash scripts/metrics.sh