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

.agents/notes/implemented/feature/2026-07-22-docked-web-goal-bar.i18n.yaml

@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write
+2026-07-22-docked-web-goal-bar.md: b2ae08f1c0f0ceaf5d726ff3f2560f37a0e1762c
+2026-07-22-docked-web-goal-bar.zh.md: b3f2c603dca05cb98b2a0bb7b6d78e6011246018