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.

privat/NoteGraph/ingestion/discovery.py

@@ -0,0 +1,45 @@
+"""Recursive file discovery with extension filtering.
+
+Discovers files for ingestion by walking directories and filtering
+to supported document types.
+"""
+
+import logging
+from pathlib import Path
+
+logger = logging.getLogger(__name__)
+
+SUPPORTED_EXTENSIONS = {".pdf", ".jpg", ".jpeg", ".png", ".md", ".txt", ".docx"}
+
+
+def discover_files(path: Path) -> list[Path]:
+    """Discover supported files from a path (file or directory).
+
+    Args:
+        path: A single file path or a directory to scan recursively.
+
+    Returns:
+        Sorted list of Path objects with supported extensions.
+
+    Raises:
+        FileNotFoundError: If the path does not exist.
+    """
+    path = Path(path)
+
+    if not path.exists():
+        raise FileNotFoundError(f"Path does not exist: {path}")
+
+    if path.is_file():
+        if path.suffix.lower() in SUPPORTED_EXTENSIONS:
+            return [path]
+        logger.warning("Unsupported file type: %s", path)
+        return []
+
+    # Recursive directory traversal
+    files: list[Path] = []
+    for item in sorted(path.rglob("*")):
+        if item.is_file() and item.suffix.lower() in SUPPORTED_EXTENSIONS:
+            files.append(item)
+
+    logger.info("Discovered %d supported files in %s", len(files), path)
+    return files