EsLint v9 (#154)

* Upgrade ESLint and related configurations to version 9

- Update ESLint to version 9.19.0
- Migrate ESLint configurations to flat config format
- Remove deprecated ESLint config files
- Update package dependencies and configurations
- Simplify ESLint setup across packages
- Remove unnecessary ESLint config blocks from package.json files
- Improved CI caching with Turborepo tasks
- Removed duplicate styles

.github/workflows/workflow.yml

@@ -7,13 +7,14 @@ on:
 jobs:
   typescript:
     name: ʦ TypeScript
-    timeout-minutes: 8
+    timeout-minutes: 10
     runs-on: ubuntu-latest
     env:
       SUPABASE_SERVICE_ROLE_KEY: ${{ secrets.SUPABASE_SERVICE_ROLE_KEY }}
       SUPABASE_DB_WEBHOOK_SECRET: ${{ secrets.SUPABASE_DB_WEBHOOK_SECRET }}
       STRIPE_SECRET_KEY: ${{ secrets.STRIPE_SECRET_KEY }}
       STRIPE_WEBHOOK_SECRET: ${{ secrets.STRIPE_WEBHOOK_SECRET }}
+      DO_NOT_TRACK: 1
 
     steps:
       - uses: actions/checkout@v4
@@ -27,6 +28,9 @@ jobs:
           node-version: lts/*
           cache: 'pnpm'
 
+      - name: Install dependencies
+        run: pnpm install
+
       - uses: actions/cache@v4
         with:
           path: .turbo
@@ -34,9 +38,6 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-turbo-
 
-      - name: Install dependencies
-        run: pnpm install
-
       - name: Typecheck
         run: pnpm run typecheck
 
@@ -54,6 +55,7 @@ jobs:
       STRIPE_SECRET_KEY: ${{ secrets.STRIPE_SECRET_KEY }}
       STRIPE_WEBHOOK_SECRET: ${{ secrets.STRIPE_WEBHOOK_SECRET }}
       ENABLE_BILLING_TESTS: ${{ vars.ENABLE_BILLING_TESTS }}
+      DO_NOT_TRACK: 1
 
     steps:
       - uses: actions/checkout@v4
@@ -62,13 +64,6 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/cache@v4
-        with:
-          path: .turbo
-          key: ${{ runner.os }}-turbo-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-turbo-
-
       - uses: actions/setup-node@v4
         with:
           node-version: lts/*