diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index 26617776..760febd2 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -40,9 +40,11 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
+  test:
+    name: Build and E2E Tests
+    # Pin to ubuntu-22.04 for Playwright compatibility
+    # ubuntu-latest (24.04) has library version mismatches with Playwright's WebKit dependencies
+    runs-on: ubuntu-22.04
     permissions:
       contents: read
 
@@ -85,46 +87,27 @@ jobs:
           echo "| custom-status-block.js | $(du -h build/custom-status-block.js | cut -f1) |" >> $GITHUB_STEP_SUMMARY
           echo "| calendar-react.js | $(du -h build/calendar-react.js | cut -f1) |" >> $GITHUB_STEP_SUMMARY
 
-      - name: Upload build artifacts
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
-        with:
-          name: build-artifacts
-          path: build/
-          retention-days: 1
-
-  test:
-    name: E2E Tests
-    # Pin to ubuntu-22.04 for Playwright compatibility
-    # ubuntu-latest (24.04) has library version mismatches with Playwright's WebKit dependencies
-    runs-on: ubuntu-22.04
-    needs: build
-    permissions:
-      contents: read
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          persist-credentials: false
-
-      - name: Set up NodeJS 20
-        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with:
-          node-version: '20'
-          cache: npm
-
-      - name: Install dependencies
-        run: npm ci
+      - name: Resolve Playwright version
+        id: playwright-version
+        run: |
+          version=$(node -p "require('@playwright/test/package.json').version")
+          echo "version=${version}" >> "$GITHUB_OUTPUT"
 
-      - name: Download build artifacts
-        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      - name: Cache Playwright browsers
+        id: playwright-cache
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
-          name: build-artifacts
-          path: build/
+          path: ~/.cache/ms-playwright
+          key: playwright-${{ runner.os }}-${{ steps.playwright-version.outputs.version }}
 
       - name: Install Playwright browsers and system dependencies
+        if: steps.playwright-cache.outputs.cache-hit != 'true'
         run: npx playwright install --with-deps chromium
 
+      - name: Install Playwright system dependencies
+        if: steps.playwright-cache.outputs.cache-hit == 'true'
+        run: npx playwright install-deps chromium
+
       - name: Install WordPress with wp-env
         run: npm run wp-env start
 
diff --git a/.github/workflows/js-tests.yml b/.github/workflows/js-tests.yml
index 62616ca5..343dabb2 100644
--- a/.github/workflows/js-tests.yml
+++ b/.github/workflows/js-tests.yml
@@ -53,8 +53,19 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Cache ESLint and Jest results
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        with:
+          path: |
+            .eslintcache
+            node_modules/.cache/jest
+          key: js-cache-${{ runner.os }}-${{ hashFiles('package-lock.json', 'jest.config.js', '.eslintrc*', 'eslint.config.*') }}-${{ github.sha }}
+          restore-keys: |
+            js-cache-${{ runner.os }}-${{ hashFiles('package-lock.json', 'jest.config.js', '.eslintrc*', 'eslint.config.*') }}-
+            js-cache-${{ runner.os }}-
+
       - name: Run Lint JS
-        run: npm run lint-js
+        run: npm run lint-js -- --cache
 
       - name: Run Jest tests
         run: npm run test-jest
diff --git a/.github/workflows/php-lint.yml b/.github/workflows/php-lint.yml
index 6261f551..01ac88e4 100644
--- a/.github/workflows/php-lint.yml
+++ b/.github/workflows/php-lint.yml
@@ -49,8 +49,17 @@ jobs:
         with:
           composer-options: --prefer-dist --no-progress
 
+      - name: Cache PHPCS results
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        with:
+          path: .phpcs-cache
+          key: phpcs-${{ runner.os }}-${{ hashFiles('.phpcs.xml.dist', 'composer.json') }}-${{ github.sha }}
+          restore-keys: |
+            phpcs-${{ runner.os }}-${{ hashFiles('.phpcs.xml.dist', 'composer.json') }}-
+            phpcs-${{ runner.os }}-
+
       - name: PHP syntax lint
         run: composer lint-ci | cs2pr
 
       - name: PHP coding standards
-        run: composer cs -- --report=checkstyle | cs2pr
+        run: composer cs -- --cache=.phpcs-cache --report=checkstyle | cs2pr
diff --git a/.gitignore b/.gitignore
index 250094d5..e29be333 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,5 +11,9 @@ dist/
 .phpunit.cache/
 artifacts/
 
+# Tool caches
+.phpcs-cache
+.eslintcache
+
 # Local wp-env overrides
 .wp-env.override.json