fix(cli): harden launcher lifecycle

packages/ui/app-boot/src/index.ts

@@ -208,7 +208,7 @@ export function assertEntriesLoaded(ctx: Context, binName: string): void {
  * (see {@link resolveConfigPath}).
  * @param patches - optional overlay patches applied over the included tree
  * (see {@link loadPersonalPatches}); an empty list mounts none.
- * @param prepare - optional host setup run against the root context before any Loader entry mounts.
+ * @param prepare - optional host setup run after Loader installation and before any config-tree entry mounts.
  * @returns the root context once every entry has started.
  */
 export async function boot(
@@ -218,10 +218,10 @@ export async function boot(
   prepare?: (ctx: Context) => Promise<void> | void,
 ): Promise<Context> {
   const ctx = new Context()
-  await prepare?.(ctx)
   ctx.baseUrl = pathToFileURL(dirname(absoluteConfigPath)).href + '/'
   await ctx.plugin(Loader)
   ctx.loader.builtins.include = Include
+  await prepare?.(ctx)
   await ctx.loader.create({
     name: 'cordis:include',
     config: {

packages/ui/app-boot/tests/app-boot.spec.ts

@@ -195,7 +195,11 @@ describe('boot', () => {
     writeFileSync(join(dir, 'noop.mjs'), 'export const name = "noop"\nexport function apply() {}\n')
     writeFileSync(join(dir, 'cordis.yml'), '- id: noop\n  name: ./noop.mjs\n')
     const prepared: Context[] = []
-    const ctx = await boot(NAME, join(dir, 'cordis.yml'), undefined, (hostCtx) => { prepared.push(hostCtx) })
+    const ctx = await boot(NAME, join(dir, 'cordis.yml'), undefined, (hostCtx) => {
+      expect(hostCtx.loader).toBeDefined()
+      expect([...hostCtx.loader.entries()]).toEqual([])
+      prepared.push(hostCtx)
+    })
     try {
       expect(prepared).toEqual([ctx])
     } finally {

packages/ui/tui/src/index.ts

@@ -1676,7 +1676,9 @@ export function apply(ctx: Context, config: Config): void {
     initialSkill === undefined ? {} : { initialSkill },
   ), {
     terminal: new ProcessTerminal(),
-    exit: code => process.exit(code),
+    exit: (code) => {
+      void ctx.fiber.dispose().finally(() => { process.exit(code) })
+    },
     ...resumeHost === undefined ? {} : { handoffResume: (sessionId, cwd) => resumeHost.handoff(sessionId, cwd) },
     ...goodbyeMessage === undefined ? {} : { goodbyeMessage },
   })