feat: add quick wins - prettier, bundle limits, coverage

✅ Prettier config (.prettierrc) added to all 3 repos
- Consistent formatting: semicolons, single quotes, 100 char width
- Added format/format:check scripts to all package.json
- Added prettier devDependency

✅ Bundle size limits enforcement
- Added .bundlesizerc.json to all 3 dashboards
- Configured limits: _app (150kb), main (50kb), webpack (50kb), framework (100kb)
- Added bundlesize package and size:check script

✅ Test coverage with 80% thresholds
- Added coverage config to all dashboard vitest configs
- Enforces minimum coverage on branches, functions, lines, statements
- Generates text, json, and html reports

✅ TypeScript strict mode already enabled everywhere
- All repos already using strict: true in tsconfig

✅ EditorConfig already present in MindLyst

.prettierrc

@@ -0,0 +1,11 @@
+{
+  "semi": true,
+  "trailingComma": "es5",
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "bracketSpacing": true,
+  "arrowParens": "avoid",
+  "endOfLine": "lf"
+}

package.json

@@ -10,6 +10,8 @@
     "typecheck": "pnpm -r exec tsc --noEmit",
     "lint": "pnpm -r exec eslint . --ext .ts,.tsx",
     "lint:fix": "pnpm -r exec eslint . --ext .ts,.tsx --fix",
+    "format": "prettier --write \"**/*.{ts,tsx,js,jsx,json,md,yml,yaml}\"",
+    "format:check": "prettier --check \"**/*.{ts,tsx,js,jsx,json,md,yml,yaml}\"",
     "audit": "pnpm -r audit --audit-level moderate",
     "clean": "pnpm -r exec rm -rf dist"
   },
@@ -21,6 +23,7 @@
     "@typescript-eslint/parser": "^8.0.0",
     "@vitest/coverage-v8": "^3.0.0",
     "eslint": "^9.0.0",
+    "prettier": "^3.0.0",
     "typescript": "^5.7.0",
     "vitest": "^3.0.0"
   },