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- docs: README, runbook, ADR-001 superseded, plan §1 validation row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

biome.json

@@ -1,6 +1,10 @@
 {
   "$schema": "./node_modules/@biomejs/biome/configuration_schema.json",
-  "vcs": { "enabled": true, "clientKind": "git", "useIgnoreFile": true },
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true
+  },
   "files": {
     "includes": [
       "**",
@@ -8,6 +12,7 @@
       "!**/dist",
       "!**/build",
       "!**/.react-router",
+      "!types",
       "!spikes",
       "!docs",
       "!apps/web/app/app.css",
@@ -21,21 +26,55 @@
     "lineWidth": 120
   },
   "javascript": {
-    "formatter": { "quoteStyle": "double", "semicolons": "always", "trailingCommas": "all" }
+    "formatter": {
+      "quoteStyle": "double",
+      "semicolons": "always",
+      "trailingCommas": "all"
+    }
   },
   "linter": {
     "enabled": true,
     "rules": {
       "preset": "recommended",
-      "style": { "noNonNullAssertion": "off" },
-      "suspicious": { "noArrayIndexKey": "off" }
+      "style": {
+        "noNonNullAssertion": "off"
+      },
+      "suspicious": {
+        "noArrayIndexKey": "off"
+      },
+      "correctness": {
+        "useImportExtensions": "error"
+      }
+    }
+  },
+  "assist": {
+    "actions": {
+      "source": {
+        "organizeImports": "on"
+      }
     }
   },
-  "assist": { "actions": { "source": { "organizeImports": "on" } } },
   "overrides": [
     {
       "includes": ["apps/web/app/components/ui/**"],
-      "linter": { "rules": { "a11y": "off", "security": { "noDangerouslySetInnerHtml": "off" } } }
+      "linter": {
+        "rules": {
+          "a11y": "off",
+          "security": {
+            "noDangerouslySetInnerHtml": "off"
+          }
+        }
+      }
+    },
+    {
+      "includes": ["packages/adapters/src/sites/**", "packages/testkit/src/sites/**", "scripts/mp-sync/**"],
+      "linter": {
+        "rules": {
+          "correctness": {
+            "useImportExtensions": "off"
+          }
+        }
+      }
     }
   ]
 }