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- docs: README, runbook, ADR-001 superseded, plan §1 validation row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/tasks/test/helpers.ts

@@ -1,6 +1,6 @@
 import { Kysely, PostgresDialect, sql } from "kysely";
 import pg from "pg";
-import { migrateTasksTables, OpenWorkflowEngine, silentSink, type TaskRegistry } from "../src";
+import { migrateTasksTables, OpenWorkflowEngine, silentSink, type TaskRegistry } from "../src/index.ts";
 
 export const PG_URL =
   process.env.TASKS_TEST_DATABASE_URL ?? process.env.DATABASE_URL ?? "postgres://umt:umt@localhost:55433/umt";
@@ -21,9 +21,14 @@ export async function pgAvailable(): Promise<boolean> {
 // biome-ignore lint/suspicious/noExplicitAny: 测试直接用原生 SQL
 export type TestDb = Kysely<any>;
 
-/** 每个测试文件用独立 schema:业务表 <name>,引擎表 <name>_ow */
+/**
+ * 每个测试文件用独立 schema:业务表 <name>,引擎表 <name>_ow。
+ * 名字带 pid + 随机后缀:同一个 PG 上并发跑的多份测试(多个终端/CI 任务/多个 agent)互不踩踏;
+ * 调用方在 afterAll 里 dropSchemas 清理。
+ */
 export function testSchemas(suffix: string) {
-  const biz = `tasks_test_${suffix}`;
+  const uniq = `${process.pid.toString(36)}${Math.random().toString(36).slice(2, 8)}`;
+  const biz = `tasks_test_${suffix}_${uniq}`;
   return { biz, ow: `${biz}_ow` };
 }