feat: bootstrap pnpm workspace (E00-S01)

pnpm 11.23.0 workspace with a committed frozen lockfile, Node engine
restricted to the 24.x line, TypeScript 6.0.3 pinned exactly, strict base
tsconfig, apps/packages/extensions kept as separate workspaces, root
build/test/typecheck commands, and the FIT-001 architecture test rejecting
core-to-extension imports. Minimal CI runs only the root scripts (S05
stages stay out of scope). Closes #58.

apps/server/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "@personal-blog/server",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "description": "EPPP public server application. Bootstrap placeholder — the Fastify 5 application shell lands in a later story.",
+  "scripts": {
+    "build": "tsc -p tsconfig.json",
+    "typecheck": "tsc -p tsconfig.json --noEmit"
+  }
+}

apps/server/src/index.ts

@@ -0,0 +1,7 @@
+/**
+ * @personal-blog/server — EPPP public server application.
+ *
+ * Bootstrap placeholder so apps/ is a real workspace and root build/typecheck
+ * cover it. The Fastify 5 application shell lands in a later story.
+ */
+export const APP_NAME = 'eppp-server';

apps/server/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "dist"
+  },
+  "include": ["src"]
+}