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-primitives/tests/state-dot.client.spec.tsx

@@ -0,0 +1,46 @@
+// @vitest-environment jsdom
+import { cleanup, render } from '@testing-library/react'
+import { afterEach, describe, expect, it } from 'vitest'
+import { StateDot } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { StateDotState } from '@deepseek-ai/dsh-client-ui-primitives'
+
+afterEach(cleanup)
+
+describe('StateDot', () => {
+  it.each(['done', 'warning', 'ongoing', 'error'] as const)('renders state %s as data-state', (state) => {
+    const { container } = render(<StateDot state={state} />)
+    const dot = container.firstElementChild as HTMLElement
+    expect(dot.dataset['state']).toBe(state)
+    expect(dot.getAttribute('aria-hidden')).toBe('true')
+  })
+
+  it('solid states are spans; ongoing is an svg pixel matrix', () => {
+    const { container, rerender } = render(<StateDot state="done" />)
+    expect(container.firstElementChild?.tagName).toBe('SPAN')
+    rerender(<StateDot state="ongoing" />)
+    const matrix = container.firstElementChild as SVGSVGElement
+    expect(matrix.tagName).toBe('svg')
+    const cells = matrix.querySelectorAll('rect')
+    expect(cells).toHaveLength(8)
+    // Chase phase: every cell carries its own negative animation delay.
+    const delays = [...cells].map(cell => (cell).style.animationDelay)
+    expect(new Set(delays).size).toBe(8)
+  })
+
+  it('sizes via the size prop in both shapes', () => {
+    const { container, rerender } = render(<StateDot state="done" size={12} />)
+    const dot = container.firstElementChild as HTMLElement
+    expect(dot.style.width).toBe('12px')
+    expect(dot.style.height).toBe('12px')
+    rerender(<StateDot state="ongoing" size={12} />)
+    const ring = container.firstElementChild as SVGSVGElement
+    expect(ring.getAttribute('width')).toBe('12')
+    expect(ring.getAttribute('height')).toBe('12')
+  })
+
+  it('rejects unknown states at the type level', () => {
+    const bad = (state: StateDotState) => state
+    // @ts-expect-error 'paused' is not one of the four states
+    expect(bad('paused')).toBe('paused')
+  })
+})