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-model/tests/browser-plugin.client.spec.ts

@@ -14,7 +14,7 @@ import { createScope } from '@deepseek-ai/dsh-client-runtime/client'
 import type { SessionId } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
 import { TestRemote } from '@deepseek-ai/dsh-client-test-runtime'
-import type { ModelSelection } from '@deepseek-ai/dsh-client-connection/client'
+import type { ModelSelection } from '@deepseek-ai/dsh-api-remotes/client'
 import type { CommandContribution, SelectOption } from '@deepseek-ai/dsh-client-ui-command/client'
 import type { ModelSelectInjected } from '../src/client/slots.ts'
 import { apply, inject } from '../src/client/index.ts'

packages/client/ui-model/tests/model-select.client.spec.tsx

@@ -1,7 +1,7 @@
 // @vitest-environment jsdom
 import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
-import type { ModelSelection } from '@deepseek-ai/dsh-client-connection/client'
+import type { ModelSelection } from '@deepseek-ai/dsh-api-remotes/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import type { ComponentProps } from 'react'
 import type { ModelDirectoryState } from '../src/client/directory.ts'