docs: initialize ddhh-job-manager

Closed job board for digital dabei Hamburg with provider self-registration, admin moderation, and mentor access.

Creates PROJECT.md with requirements and constraints.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.planning/config.json

@@ -0,0 +1,26 @@
+{
+  "mode": "yolo",
+  "depth": "standard",
+  "parallelization": {
+    "enabled": true,
+    "plan_level": true,
+    "task_level": false,
+    "skip_checkpoints": true,
+    "max_concurrent_agents": 3,
+    "min_plans_for_parallel": 2
+  },
+  "gates": {
+    "confirm_project": false,
+    "confirm_phases": false,
+    "confirm_roadmap": false,
+    "confirm_breakdown": false,
+    "confirm_plan": false,
+    "execute_next_plan": false,
+    "issues_review": false,
+    "confirm_transition": false
+  },
+  "safety": {
+    "always_confirm_destructive": true,
+    "always_confirm_external_services": true
+  }
+}