feat: add canvasHost liveReload option

src/config/types.ts

@@ -477,6 +477,8 @@ export type CanvasHostConfig = {
   root?: string;
   /** HTTP port to listen on (default: 18793). */
   port?: number;
+  /** Enable live-reload file watching + WS reloads (default: true). */
+  liveReload?: boolean;
 };
 
 export type TalkConfig = {

src/config/zod-schema.ts

@@ -748,6 +748,7 @@ export const ClawdisSchema = z.object({
       enabled: z.boolean().optional(),
       root: z.string().optional(),
       port: z.number().int().positive().optional(),
+      liveReload: z.boolean().optional(),
     })
     .optional(),
   talk: z