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

pnpm-lock.yaml

@@ -1920,6 +1920,12 @@ importers:
       '@deepseek-ai/dsh-client-ui-trajectory':
         specifier: workspace:^
         version: link:../../client/ui-trajectory
+      '@deepseek-ai/dsh-command-goal':
+        specifier: workspace:^
+        version: link:../../goal/command-goal
+      '@deepseek-ai/dsh-commands':
+        specifier: workspace:^
+        version: link:../../ui/commands
       '@deepseek-ai/dsh-compact-basic':
         specifier: workspace:^
         version: link:../../compact/compact-basic
@@ -1929,6 +1935,12 @@ importers:
       '@deepseek-ai/dsh-fs-policy':
         specifier: workspace:^
         version: link:../../fs/fs-policy
+      '@deepseek-ai/dsh-goal':
+        specifier: workspace:^
+        version: link:../../goal/goal
+      '@deepseek-ai/dsh-goal-session':
+        specifier: workspace:^
+        version: link:../../goal/goal-session
       '@deepseek-ai/dsh-host-apiproxy':
         specifier: workspace:^
         version: link:../apiproxy