feat(web): W4-A wire console to real endpoints

- Agent page uses contracts (AgentRun/AgentRunDetail/AgentGoalReport) instead of a local
  mirror; ?mock=1 stays as an explicit demo switch; run snapshot refreshes on agent.run_status;
  stream auto-follow only while the user stays near the bottom (abort stays reachable)
- settings: Pi provider select incl. fake, new Agent runtime card (budgets, fakeScript)
- download trace uses /tasks?subjectId= and /organization-records?downloadTaskId= instead of
  time-window engine run matching and path matching; new business-task tab with cancel/retry
- workbench download dialog posts /acquisition-plans and shows per-slot rejection reasons
- preference tag revision history; subscription search by title/kind; identity/alias/subscription
  lists show entity titles; slot cards show current asset summary; policy preview sample titles
- DecisionSummary / IdentityRevisionList / ReleaseIdentityResult / TaskAccepted / PolicyPreviewSummary /
  OrganizePlanArtifactContent taken from contracts
- docs: SSE for console (cookie) vs GET /events?after=&limit= JSON replay for API keys

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/api/policies.ts

@@ -1,12 +1,12 @@
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import {
   cursorPage,
+  PolicyPreviewSummary,
   PolicyRevision,
   type PolicyRevisionCreate,
   type PolicyRevisionUpdate,
   type PolicyStatus,
 } from "@umt/contracts";
-import { z } from "zod";
 import { api } from "~/lib/api.ts";
 import { getParsed, parseOrThrow } from "./library.ts";
 
@@ -28,17 +28,9 @@ export function usePolicyRevisions(filters: PolicyFilters = {}) {
   });
 }
 
-/** 预览结果(服务端 previewPolicy 的形状;contracts 里是 JsonObject) */
-export const PolicyPreview = z.object({
-  evaluatedAt: z.string(),
-  sampleSize: z.number(),
-  templates: z.number(),
-  matched: z.number(),
-  excluded: z.number(),
-  samples: z.array(z.object({ sourceReleaseId: z.string(), template: z.string(), decision: z.string() })),
-  valid: z.boolean(),
-});
-export type PolicyPreview = z.infer<typeof PolicyPreview>;
+/** 预览结果(合同 PolicyPreviewSummary;存在 policy_revision.preview) */
+export const PolicyPreview = PolicyPreviewSummary;
+export type PolicyPreview = PolicyPreviewSummary;
 
 const parse = (d: unknown) => parseOrThrow(PolicyRevision, d, "/policy-revisions");