Merge remote-tracking branch 'origin/master' into feat/web-message-feedback-ui

Adapt to two contract changes master introduced:

- The generated Remote face now wraps every business result in
  RemoteResult, folding carrier failures into an ok:false branch instead
  of rejecting. The controller reads that envelope at its three call
  sites and maps a carrier failure onto the same settled shape the
  controls already render; three specs cover the new branch.
- Client packages split their tsconfig into host and client halves, and
  the host aggregate now compiles any test not named *.client.spec.*.
  Rename this package's specs to the client convention and drop the
  ../connection project reference, which pointed at a solution file that
  no longer carries the client sources.

Keep master's mount loop with its rollback-on-failure in api-remotes and
add messageFeedbackRemote to it.

packages/client/ui-settings/tests/plugin.client.spec.ts

@@ -0,0 +1,29 @@
+/**
+ * The settings domain base plugin's own mounting behavior: it stands up
+ * `ctx.settingsScope` for every feature that owns a preference row, and the
+ * service retires with its fiber.
+ */
+import { Context } from '@deepseek-ai/cordis'
+import { describe, expect, it } from 'vitest'
+import { apply, inject, SettingsScopeService } from '../src/client/index.ts'
+
+/** Boot the browser half over a bare root context; it injects nothing. */
+function bench() {
+  const ctx = new Context()
+  return { ctx, fiber: ctx.plugin({ inject: [...inject], apply }) }
+}
+
+describe('settings domain base plugin', () => {
+  it('mounts the scope service under settingsScope', async () => {
+    const { ctx, fiber } = bench()
+    await fiber.await()
+    expect(ctx.get('settingsScope')).toBeInstanceOf(SettingsScopeService)
+  })
+
+  it('fiber disposal retires the service', async () => {
+    const { ctx, fiber } = bench()
+    await fiber.await()
+    await fiber.dispose()
+    expect(ctx.get('settingsScope')).toBeUndefined()
+  })
+})