Migrate all repos into monorepo context folders

Bahn: aisupport, Analyse-O2C-C2S, awesome-bahn-mcp-servers, beam-mcp,
      Confluence_Bot, db-planet-mcp-server, O2C-Harness, project-audit,
      Projekt-KIQ-HP, teamlandkarte-mcp
Dhive: Jury-Voting
Privat: CV, NoteGraph (NOTE: NoteGraph needs complete redo after consolidation)
Shared: AI-Orchestrator, OrgMyLife, power_skills_and_more
Shared/references: symphony (read-only)

Bahn repos remain available as independent remotes - this monorepo
pulls them in via subtree, the originals are untouched.

shared/OrgMyLife/app/db/session.py

@@ -0,0 +1,25 @@
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+from dotenv import load_dotenv
+
+load_dotenv()
+
+DATABASE_URL = os.getenv("DATABASE_URL", "sqlite:///./orgmylife.db")
+
+connect_args = {}
+if DATABASE_URL.startswith("sqlite"):
+    connect_args["check_same_thread"] = False
+
+engine = create_engine(DATABASE_URL, connect_args=connect_args)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+# Dependency for FastAPI endpoints
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()