feat(gui): goal wire domain, client goal state, and docked goal bar

- apiproxy goals RPC domain (get/create/edit/pause/resume/complete/clear)
  with CAS refs, zod schemas, and fetch client/handler wiring
- client runtime session goal state: live goal/change meta triggers a
  coalesced refetch; mutations fold transport errors into RpcResult
- web GoalBar: docked strip above the composer (sparkle, phase label,
  truncated objective, inline edit, clear; resume when paused); creation
  stays on the /goal command
- GoalBarActions in the ui-conversation contract layer; IconSparkle16
  moves to ui-primitives icons

packages/client/ui-primitives/src/icons/index.tsx

@@ -573,3 +573,14 @@ export const IconTreeCorner8x10 = ({ size = 10, className }: IconProps) => (
     <path d="M0 0L-0.5 0L-0.5 7L0 7L0.5 7L0.5 0L0 0ZM3 10L3 10.5L8 10.5L8 10L8 9.5L3 9.5L3 10ZM0 7L-0.5 7C-0.5 8.933 1.067 10.5 3 10.5L3 10L3 9.5C1.61929 9.5 0.5 8.38071 0.5 7L0 7Z" fill="currentColor"/>
   </svg>
 )
+
+/** sparkle_16 (Others tool-row / goal strip leading glyph; hand-authored three-star
+ *  approximation — the figma 43:31850 glyph is an SF Symbols "sparkles" text glyph,
+ *  not extractable as vector data) */
+export const IconSparkle16 = ({ size = 16, className }: IconProps) => (
+  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <path d="M6.1 3.1Q6.6 7.8 11.3 8.3Q6.6 8.8 6.1 13.5Q5.6 8.8 0.9 8.3Q5.6 7.8 6.1 3.1Z" fill="currentColor" />
+    <path d="M11.9 1Q12.2 3.7 14.9 4Q12.2 4.3 11.9 7Q11.6 4.3 8.9 4Q11.6 3.7 11.9 1Z" fill="currentColor" />
+    <path d="M12.5 9.4Q12.7 11.4 14.7 11.6Q12.7 11.8 12.5 13.8Q12.3 11.8 10.3 11.6Q12.3 11.4 12.5 9.4Z" fill="currentColor" />
+  </svg>
+)

packages/client/ui-primitives/tests/icons.spec.tsx

@@ -14,8 +14,8 @@ const icons = Object.fromEntries(
 const iconNames = Object.keys(icons)
 
 describe('ic_ds_ icon set', () => {
-  it('exports the full P-I set (43 deepsuite + 6 figma extracts)', () => {
-    expect(iconNames.length).toBe(49)
+  it('exports the full P-I set (43 deepsuite + 6 figma extracts + 1 hand-authored)', () => {
+    expect(iconNames.length).toBe(50)
   })
 
   it.each(iconNames)('%s renders an svg with currentColor fills and no hardcoded palette', name => {