feat(embedding): add get_embed_status() for API-only mode

paperforge/embedding/status.py

@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+import logging
+from pathlib import Path
+
+from paperforge.embedding._chroma import get_collection, get_vector_db_path
+from paperforge.embedding._config import get_api_model
+
+logger = logging.getLogger(__name__)
+
+
+def get_embed_status(vault: Path) -> dict:
+    """Get vector DB status. API-only mode.
+
+    Returns dict with keys: db_exists, chunk_count, model, mode, healthy, error.
+    """
+    db_path = get_vector_db_path(vault)
+    exists = db_path.exists()
+    chunk_count = 0
+    healthy = True
+    error = ""
+    if exists:
+        try:
+            collection = get_collection(vault)
+            chunk_count = collection.count()
+        except Exception as exc:
+            healthy = False
+            error = str(exc)
+
+    model = get_api_model(vault)
+
+    return {
+        "db_exists": exists,
+        "chunk_count": chunk_count,
+        "model": model,
+        "mode": "api",
+        "healthy": healthy,
+        "error": error,
+    }