Initial scaffold: tooling, plan, task briefs

- pnpm 10 workspace + TypeScript strict + ESLint flat + Prettier
- CLAUDE.md as canonical brief
- docs/tasks/ — 22 task briefs broken out by phase for sub-sessions
- docs/decisions/ — ADR scaffold

Implements task 01 (repo-init).

package.json

@@ -0,0 +1,26 @@
+{
+  "name": "famapp",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "packageManager": "pnpm@10.33.3",
+  "engines": {
+    "node": ">=22"
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
+    "format": "prettier --write .",
+    "format:check": "prettier --check .",
+    "typecheck": "tsc --noEmit"
+  },
+  "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "@types/node": "^22.9.0",
+    "eslint": "^9.15.0",
+    "globals": "^15.12.0",
+    "prettier": "^3.3.3",
+    "typescript": "^5.6.3",
+    "typescript-eslint": "^8.15.0"
+  }
+}