config: add shared app config and repo for execution profile

- add shared AppConfig schema and export from shared index
- introduce config repo that reads ~/.rowboat/config/config.json
- register config repo in init and conditionally bind execution services
- remove unused execution factory exports and file

apps/x/packages/shared/src/config.ts

@@ -0,0 +1,10 @@
+import { z } from "zod";
+import { ExecutionProfile } from "./execution-profile.js";
+
+export const AppConfig = z
+    .object({
+        executionProfile: ExecutionProfile,
+    })
+    .passthrough();
+
+export type AppConfig = z.infer<typeof AppConfig>;

apps/x/packages/shared/src/index.ts

@@ -8,4 +8,5 @@ export * as agentSchedule from './agent-schedule.js';
 export * as agentScheduleState from './agent-schedule-state.js';
 export * as serviceEvents from './service-events.js';
 export * as executionProfile from './execution-profile.js';
+export * as config from './config.js';
 export { PrefixLogger };