Fix cockpit project option field: payload is projectId, not id

Why: the local ProjectView interface invented 'id'; rdm.project.list
returns projectId. Every option value was undefined, so auto-select set
pid to undefined and the overview request was never issued — cockpit
showed 加载概览… forever after the project list loaded (I4 e2e scenario 1).

Evidence: tsc clean, vitest green, build green (SELF); network probe shows
rdm.cockpit.overview 200 and .cockpit-stats rendered; seven-scenario rerun
to be recorded on the Dev I4 card.

Impact: cockpit entry only.

Refs: rollout I4

src/components/DocumentCockpit.tsx

@@ -18,7 +18,7 @@ import {
 } from '../documentCockpit'
 import { CockpitPanel, CockpitReader } from './CockpitReader'
 
-interface ProjectView { id: string; name: string; canAudit?: boolean }
+interface ProjectView { projectId: string; name: string; canAudit?: boolean }
 
 function CockpitErrorState({ raw }: { raw: string }) {
   const c = classifyRdmError(raw)
@@ -71,7 +71,7 @@ export function DocumentCockpit() {
         const rows = Array.isArray(list) ? list : (list?.projects ?? [])
         setProjects(rows)
         // 设计 §6.2：进入驾驶舱默认选中第一个可见项目，驱动概览首屏。
-        if (rows.length > 0) setPid(prev => prev || rows[0].id)
+        if (rows.length > 0) setPid(prev => prev || rows[0].projectId)
       })
       .catch(e => { if (!c) setError(e.message) })
     return () => { c = true }
@@ -130,7 +130,7 @@ export function DocumentCockpit() {
     <div className="cockpit">
       <div className="cockpit-header">
         <select className="ui-input cockpit-project" value={pid} onChange={e => { setPid(e.target.value); setSelected(null); setFilter('') }} aria-label="选择项目">
-          {projects.map(p => <option key={p.id} value={p.id}>{p.name}</option>)}
+          {projects.map(p => <option key={p.projectId} value={p.projectId}>{p.name}</option>)}
         </select>
         {filter && <button type="button" className="cockpit-filter-chip" onClick={() => setFilter('')}>
           筛选：{STAT_FILTERS.find(s => s.filter === filter)?.label || filter} ✕