feat(hooks): allow gmail tailscale target URLs

src/config/types.ts

@@ -297,6 +297,8 @@ export type HooksGmailConfig = {
   tailscale?: {
     mode?: HooksGmailTailscaleMode;
     path?: string;
+    /** Optional tailscale serve/funnel target (port, host:port, or full URL). */
+    target?: string;
   };
   /** Optional model override for Gmail hook processing (provider/model or alias). */
   model?: string;

src/config/zod-schema.ts

@@ -962,6 +962,7 @@ const HooksGmailSchema = z
           .union([z.literal("off"), z.literal("serve"), z.literal("funnel")])
           .optional(),
         path: z.string().optional(),
+        target: z.string().optional(),
       })
       .optional(),
     model: z.string().optional(),