fix: serve docs/index.html som landing page på /

main.py

@@ -84,6 +84,13 @@ class DagRequest(BaseModel):
     scheduler: str = Field("threads")
 
 
+# ── ROOT LANDING PAGE ───────────────────────────────────────────────────
+@app.get("/")
+def root():
+    """Serves the documentation index page."""
+    return FileResponse("docs/index.html")
+
+
 # ── HEALTH ────────────────────────────────────────────────────────────────────
 @app.get("/health")
 def health():