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- docs: README, runbook, ADR-001 superseded, plan §1 validation row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]>

package.json

@@ -1,31 +0,0 @@
-{
-  "name": "uhd-media-tool",
-  "private": true,
-  "type": "module",
-  "packageManager": "[email protected]",
-  "engines": {
-    "node": ">=24"
-  },
-  "scripts": {
-    "dev": "pnpm --parallel --filter @umt/server --filter @umt/web dev",
-    "dev:web": "pnpm --filter @umt/web dev",
-    "dev:server": "pnpm --filter @umt/server dev",
-    "db:up": "docker compose -f docker-compose.dev.yml up -d --wait",
-    "db:migrate": "pnpm --filter @umt/db migrate",
-    "db:reset": "pnpm --filter @umt/db reset",
-    "typecheck": "pnpm -r --workspace-concurrency=4 typecheck",
-    "lint": "biome check .",
-    "format": "biome check --write .",
-    "test": "pnpm -r test",
-    "check:tokens": "pnpm --filter @umt/web check:tokens",
-    "build": "pnpm -r build",
-    "ci": "pnpm typecheck && pnpm lint && pnpm test && pnpm check:tokens && pnpm build"
-  },
-  "devDependencies": {
-    "@biomejs/biome": "^2.5.14",
-    "@types/node": "^24",
-    "tsx": "^4.23.15",
-    "typescript": "^5.9.2",
-    "vitest": "^5.0.2"
-  }
-}