feat(excalidraw): support .excalidraw.md (Obsidian plugin format) with lz-string decompression

backend/indexer.py

@@ -64,6 +64,7 @@ SUPPORTED_EXTENSIONS = {
     ".php", ".sql", ".r", ".m", ".swift", ".kt",
     ".dockerfile", ".makefile", ".cmake",
     ".excalidraw",
+    ".excalidraw.md",
 }
 
 

backend/main.py

@@ -124,6 +124,7 @@ class FileContentResponse(BaseModel):
     is_json: bool | None = Field(default=None, description="True for JSON files")
     is_excalidraw: bool | None = Field(default=None, description="True for Excalidraw diagram files")
     excalidraw_data: dict[str, Any] | None = Field(default=None, description="Excalidraw diagram data (elements, appState, files)")
+    excalidraw_data_compressed: str | None = Field(default=None, description="Compressed Excalidraw data for .excalidraw.md files")
     pdf_metadata: dict[str, Any] | None = Field(default=None, description="PDF metadata")
     pdf_toc: list[dict[str, Any]] | None = Field(default=None, description="PDF table of contents")
     image_mime: str | None = Field(default=None, description="MIME type for image files")
@@ -2505,7 +2506,28 @@ async def api_file(vault_name: str, path: str = Query(..., description="Relative
             "is_markdown": False, "is_json": True,
         }
 
-    # === Excalidraw: diagram editor ===
+    # === Excalidraw .excalidraw.md (Obsidian plugin format) ===
+    if path.lower().endswith(".excalidraw.md"):
+        import re as re_mod
+        raw_lower = file_path.read_text(encoding="utf-8", errors="replace")
+        # Check for excalidraw-plugin in frontmatter or body
+        if "excalidraw-plugin:" in raw_lower:
+            # Extract compressed JSON block
+            match = re_mod.search(r'```compressed-json\n(.*?)\n```', raw_lower, re_mod.DOTALL)
+            if match:
+                compressed = match.group(1).strip()
+                return {
+                    "vault": vault_name, "path": path,
+                    "title": file_path.name.replace(".excalidraw.md", ""),
+                    "tags": [], "frontmatter": {},
+                    "html": "", "raw_length": len(raw_lower),
+                    "extension": ".excalidraw.md",
+                    "is_markdown": False,
+                    "is_excalidraw": True,
+                    "excalidraw_data_compressed": compressed,
+                }
+        # Fallback: treat as regular markdown
+        raw = raw_lower
     if ext == ".excalidraw":
         import json as json_mod
         try: