chore(deno): migrate toolchain from Node 24 + pnpm to Deno 2.9.7 + TypeScript 7.0.2 (W1.5)

- root deno.json workspace (nodeModulesDir auto), npm versions registered once in imports, deno.lock;
  remove pnpm-lock/pnpm-workspace/root package.json; members keep minimal package.json (name/type/exports)
- tasks: dev, typecheck (tsc 7.0.2 per member + deno check), lint/fmt (biome, useImportExtensions),
  test (vitest via deno), check:tokens, build (web + deno compile), ci, db:migrate/reset, gen:types
- tsconfig base moved to config/ (no root tsconfig.json); deno types -> types/deno.d.ts; web drops baseUrl
- server: Deno.serve entry with graceful shutdown, --role migrate|preflight|probe, WEB_ROOT static SPA hosting;
  drop @hono/node-server, tsx, esbuild build.mjs
- logger: redact child() bindings and serialize err by message/stack; sync stdout destination; tests
- relative imports get explicit extensions (sites/mp-sync paths left for follow-up)
- crash-recovery tests spawn `deno run -A`; tasks tests use unique per-file schemas
- single-container Dockerfile + entrypoint (migrate -> preflight -> api+worker watchdog), docker-compose.yml
- docs: README, runbook, ADR-001 superseded, plan §1 validation row

Co-Authored-By: Claude Fable 5.1 <[email protected]>

packages/contracts/src/events.ts

@@ -1,9 +1,9 @@
 import { z } from "zod";
-import { AgentRunStatus, DecisionKind, DecisionStatus, Severity } from "./agent";
-import { Id, NonNegInt, Timestamp } from "./common";
-import { DownloadStatus, PauseReason, TaskKind, TaskStatus } from "./execution";
-import { OrganizationStatus } from "./organization";
-import { FeedHealth } from "./sources";
+import { AgentRunStatus, DecisionKind, DecisionStatus, Severity } from "./agent.ts";
+import { Id, NonNegInt, Timestamp } from "./common.ts";
+import { DownloadStatus, PauseReason, TaskKind, TaskStatus } from "./execution.ts";
+import { OrganizationStatus } from "./organization.ts";
+import { FeedHealth } from "./sources.ts";
 
 /** SSE 事件信封:seq 在进程内单调递增,客户端断线后用 ?after=<seq> 补读 */
 export const EventEnvelope = z.object({