feat: 项目级成本预算系统（按模型×token 精确计费 + 超额自动暂停）

精确到项目级的成本/预算护栏，成本按「模型 × token 用量」折算（⑧ ★ 新特性）。

定价（单源）：
- src/model/pricing.ts：MODEL_PRICES（opus/sonnet/haiku，USD/1M token，分
  input/output/cacheRead/cacheWrite）+ computeCost/addUsage，前缀容错、未知模型记 0

token 捕获链（worker → daemon）：
- cc.ts：从 SDK result 消息抓 usage，跨 resume/回退累计；CCResult.usage
- runner/reviewer：结果对象带 usage + modelUsed
- protocol.ts：新增 'usage' outbox 记录；pipeline 每次 CC（executor/复审/planner/
  conflict）后 emit usage（worker 侧写文件，不碰 DB）
- ingest.ts：'usage' → store.setRunUsage（累加、按模型折算）→ enforceBudget

存储 + 护栏：
- schema/db.ts：runs.usage/cost_usd、projects.budget_usd/budget_period（幂等迁移）
- store.ts：setRunUsage（累加）、projectSpend、costSummary（按项目/模型/总计）、
  enforceBudget（超额 → 置 paused + 广播 budget.exceeded）
- 编排器天然停领：orchestrator 既有「跳过 paused 项目」即生效，无需改

API：
- GET /api/usage：并入成本明细 {session,weekly,cost:{period,total,byProject,byModel}}，?period/?project
- GET /api/health：{ok,db,inflight,at}
- PATCH /api/projects：支持 budgetUsd/budgetPeriod

前端：
- adapt.js：agentSummary 用真实成本/token；adaptProject 透传预算字段
- app.jsx：budget.exceeded → 告警 toast
- ConfigPanel：预算 $ + 周期（day|month）受控输入

验证：typecheck 干净；206 测试通过（含新增 budget.test.ts 4 例：定价折算/累加/
costSummary/enforceBudget）；前端 build + 截图确认预算输入渲染、0 错误。
注：生效需合并后重启 daemon（迁移幂等加列、向后兼容旧库）。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

design/ui_kits/console/Topbar.jsx

@@ -107,16 +107,23 @@ function Topbar({ project, counts, onSync, onToggleConfig, t, theme, onToggleThe
   );
 }
 
-function ConfigPanel({ project, onSave, onClose, onSync, t }) {
+function ConfigPanel({ project, onSave, onClose, onSync, t, lang }) {
   const { Button, Input, Select } = window.MaestroDesignSystem_a6a290;
   const [concurrency, setConcurrency] = React.useState(String(project.concurrency));
   const [autonomy, setAutonomy] = React.useState(project.autonomy);
   const [logo, setLogo] = React.useState(project.logo || '');
   const [verifyCmd, setVerifyCmd] = React.useState(project.verifyCmd || '');
   const [model, setModel] = React.useState(project.model || '');
+  const [budgetUsd, setBudgetUsd] = React.useState(project.budgetUsd != null ? String(project.budgetUsd) : '');
+  const [budgetPeriod, setBudgetPeriod] = React.useState(project.budgetPeriod || 'month');
+  const BL = lang === 'en'
+    ? { budget: 'Budget $ (empty=∞)', period: 'Period', day: 'Daily', month: 'Monthly', ph: 'e.g. 20' }
+    : { budget: '预算 $（空=不限）', period: '周期', day: '按天', month: '按月', ph: '如 20' };
   const save = () => onSave({
     concurrency: Number(concurrency), autonomy,
     logo: logo || null, verifyCmd: verifyCmd || null, model: model || null,
+    budgetUsd: budgetUsd.trim() === '' ? null : Number(budgetUsd),
+    budgetPeriod,
   });
   return (
     <section style={{ position: 'relative', zIndex: 30, background: 'var(--panel)', border: '1px solid var(--line)', borderRadius: 6, padding: '12px 14px', marginTop: 12, animation: 'maestro-rise .18s ease both' }}>
@@ -134,6 +141,11 @@ function ConfigPanel({ project, onSave, onClose, onSync, t }) {
         <span style={{ flex: 1, minWidth: 170, display: 'flex' }}><Input label={t.verifyCmd} placeholder={t.verifyPh} value={verifyCmd} onChange={setVerifyCmd} style={{ width: '100%' }} /></span>
         <span style={{ flex: 1, minWidth: 170, display: 'flex' }}><Input label={t.model} placeholder={t.modelPh} value={model} onChange={setModel} style={{ width: '100%' }} /></span>
       </div>
+      <div style={{ display: 'flex', gap: 14, alignItems: 'flex-end', flexWrap: 'wrap', marginTop: 12 }}>
+        <Input label={BL.budget} type="number" placeholder={BL.ph} value={budgetUsd} onChange={setBudgetUsd} width={150} />
+        <Select label={BL.period} value={budgetPeriod} onChange={setBudgetPeriod}
+          options={[{ value: 'day', label: BL.day }, { value: 'month', label: BL.month }]} />
+      </div>
       <div style={{ display: 'flex', alignItems: 'center', gap: 10, marginTop: 10, paddingTop: 10, borderTop: '1px dashed var(--line-soft)' }}>
         <span style={{ fontSize: 10.5, color: 'var(--faint)', letterSpacing: '.06em' }}>{t.lastSync}</span>
         <Button size="xs" onClick={onSync}>⟳ {t.sync}</Button>