Add local dashcam video library

Co-authored-by: Copilot <[email protected]>

modules/app_sql.py

@@ -222,6 +222,46 @@ def dashcam_file_marked_uploaded(relative_path, sha256):
         return cur.fetchone() is not None
 
 
+def dashcam_file_uploaded_for_stat(relative_path, size, mtime):
+    """Whether the current local file version is confirmed uploaded.
+
+    Uses the existing hash cache so list/retention scans never rehash large
+    video files merely to display their status.
+    """
+    conn = get_conn()
+    if conn is None:
+        return False
+    with _conn_lock:
+        cur = conn.execute(
+            """SELECT 1
+               FROM dashcam_hash_cache AS cache
+               JOIN dashcam_uploads AS uploads
+                 ON uploads.RELATIVE_PATH = cache.RELATIVE_PATH
+                AND uploads.SHA256 = cache.SHA256
+               WHERE cache.RELATIVE_PATH = ?
+                 AND cache.SIZE = ?
+                 AND cache.MTIME = ?""",
+            (relative_path, size, mtime),
+        )
+        return cur.fetchone() is not None
+
+
+def uploaded_dashcam_file_stats():
+    """Return exact uploaded file versions as (path, size, mtime) tuples."""
+    conn = get_conn()
+    if conn is None:
+        return set()
+    with _conn_lock:
+        cur = conn.execute(
+            """SELECT cache.RELATIVE_PATH, cache.SIZE, cache.MTIME
+               FROM dashcam_hash_cache AS cache
+               JOIN dashcam_uploads AS uploads
+                 ON uploads.RELATIVE_PATH = cache.RELATIVE_PATH
+                AND uploads.SHA256 = cache.SHA256"""
+        )
+        return set(cur.fetchall())
+
+
 def mark_dashcam_file_uploaded(relative_path, sha256):
     conn = get_conn()
     if conn is None: