Fixing gnommo

gnommo/validator.py

@@ -57,16 +57,26 @@ def validate_project(
         # Skip audio markers (start with 'A' followed by audio id, e.g., Awoosh)
         if marker.startswith("A") and len(marker) > 1 and marker[1:].isalnum():
             continue
-        # Validate video trigger markers (video:xxx) - slide-like videos
-        if marker.startswith("video:"):
-            video_id = marker[6:]  # Remove 'video:' prefix
+        # Validate video trigger markers — both legacy [video:xxx] and
+        # shorthand [vft:xxx] / [vfb:xxx] / [vst:xxx] / [vsb:xxx].
+        _VIDEO_PREFIXES = {
+            "video:": 6,
+            "vft:": 4,
+            "vfb:": 4,
+            "vst:": 4,
+            "vsb:": 4,
+        }
+        matched_prefix = next(
+            (p for p in _VIDEO_PREFIXES if marker.startswith(p)), None
+        )
+        if matched_prefix is not None:
+            video_id = marker[_VIDEO_PREFIXES[matched_prefix] :]
             if video_id not in videos:
-                # Check if it's a file extension mismatch
                 hint = ""
                 if "." in video_id:
                     base_name = video_id.rsplit(".", 1)[0]
                     if base_name in videos:
-                        hint = f" (Did you mean [video:{base_name}]? Don't include file extensions in markers)"
+                        hint = f" (Did you mean [{matched_prefix}{base_name}]? Don't include file extensions in markers)"
                 warnings.append(
                     ValidationIssue(
                         f"Video marker [{marker}] referenced in manuscript but '{video_id}' not defined in videos.json{hint} — using PlaceholderVideo instead",
@@ -214,11 +224,12 @@ def validate_project(
                         )
                     )
 
-    # Check we have at least one video source
-    if not videos:
+    # Check videos.json exists (empty is fine — project may not need triggered videos)
+    if not (project_path / config.videos_path).exists():
         issues.append(
             ValidationIssue(
-                "No video sources defined in videos.json", project_path / "videos.json"
+                "videos.json not found — run 'gnommo import' to create it",
+                project_path / "videos.json",
             )
         )