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.

bahn/project-audit/data/gitlab-inventory/statistics.md

@@ -0,0 +1,42 @@
+# Projektstatistiken
+
+- Projekte: 167
+- Untergruppen: 9
+- Archiviert: 32
+
+## Sprachen
+- Java: 47
+- Dockerfile: 46
+- Shell: 22
+- Python: 15
+- Gherkin: 14
+- Smarty: 14
+- HTML: 9
+- JavaScript: 8
+- Mustache: 5
+- CSS: 4
+- TypeScript: 2
+- Batchfile: 2
+- Groovy: 1
+- Go: 1
+- Jinja: 1
+- Groovy Server Pages: 1
+- FreeMarker: 1
+- SCSS: 1
+- XSLT: 1
+
+## Tags
+- maven: 83
+- java: 47
+- docker: 46
+- archived: 32
+- infrastructure: 29
+- inactive-6m+: 21
+- testing: 20
+- service: 17
+- python: 15
+- frontend-app: 15
+- frontend: 9
+- library: 6
+- inactive-1y+: 5
+- npm: 3