Serve MCP at /mcp, keep /health at root

- Route MCP streamable handler to /mcp via http.ServeMux
- Move /health to a dedicated mux route (no auth required)
- Simplify authMiddleware by removing /health special case
- Apply CORS middleware at the mux level
- Ignore nix build result symlink

.gitignore

@@ -1,6 +1,9 @@
 # Binary
 st-pierre
 
+# Nix build result
+result
+
 # Environment
 .env
 

main.go

@@ -78,11 +78,16 @@ func main() {
 
 	streamableServer := server.NewStreamableHTTPServer(mcpServer)
 
-	authHandler := authMiddleware(token, streamableServer)
+	mux := http.NewServeMux()
+	mux.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte("ok"))
+	})
+	mux.Handle("/mcp", authMiddleware(token, streamableServer))
 
 	httpServer := &http.Server{
 		Addr:    ":" + port,
-		Handler: corsMiddleware(authHandler),
+		Handler: corsMiddleware(mux),
 	}
 
 	logger.Info("starting", zap.String("port", port))
@@ -160,7 +165,11 @@ func handleStoreKnowledge(sqlite *sqliteStore, qdrant *qdrantStore, logger *zap.
 
 		note, ok := args["note"].(string)
 		if !ok || note == "" {
-			return mcp.NewToolResultError("note is required and must be a non-empty string"), nil
+			if content, ok := args["content"].(string); ok && content != "" {
+				note = content
+			} else {
+				return mcp.NewToolResultError("note (or content) is required and must be a non-empty string"), nil
+			}
 		}
 
 		repos := parseStringSlice(args["repos"])
@@ -238,12 +247,6 @@ func handleSearchKnowledge(sqlite *sqliteStore, qdrant *qdrantStore) server.Tool
 
 func authMiddleware(token string, next http.Handler) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		if r.URL.Path == "/health" {
-			w.WriteHeader(http.StatusOK)
-			w.Write([]byte("ok"))
-			return
-		}
-
 		authHeader := strings.ToLower(r.Header.Get("Authorization"))
 		if !strings.HasPrefix(authHeader, "bearer ") || strings.TrimPrefix(authHeader, "bearer ") != token {
 			w.Header().Set("Content-Type", "application/json")