feat: add videodb media index with Docker stack

- Add videodb PHP/MySQL media collection manager (Blu-ray, DVD, CD)
- Dockerfile: PHP 8.1 + Apache with GD/mysqli/exif extensions
- docker-compose.yml: app on port 6761 + MySQL 8.0 with health checks
- docker-entrypoint.sh: auto-generates config.inc.php from env vars,
  waits for MySQL, initializes DB schema idempotently
- init-db.php: CLI schema installer using app's own prefix_query() logic
- Persistent volumes for DB, cache, and cover images

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

videodb/vendor/guzzlehttp/psr7/.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  pull_request:
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 10
+      matrix:
+        php: ['5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
+
+    steps:
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: 'none'
+          extensions: mbstring
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Mimic PHP 8.0
+        run: composer config platform.php 8.0.999
+        if: matrix.php > 8
+
+      - name: Install dependencies
+        run: composer update --no-interaction --no-progress
+
+      - name: Run tests
+        run: make test

videodb/vendor/guzzlehttp/psr7/.github/workflows/integration.yml

@@ -0,0 +1,37 @@
+name: Integration
+
+on:
+  pull_request:
+
+jobs:
+
+  build:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 10
+      matrix:
+        php: ['7.2', '7.3', '7.4', '8.0']
+
+    steps:
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: none
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Download dependencies
+        uses: ramsey/composer-install@v1
+        with:
+          composer-options: --no-interaction --optimize-autoloader
+
+      - name: Start server
+        run: php -S 127.0.0.1:10002 tests/Integration/server.php &
+
+      - name: Run tests
+        env:
+          TEST_SERVER: 127.0.0.1:10002
+        run: ./vendor/bin/phpunit --testsuite Integration

videodb/vendor/guzzlehttp/psr7/.github/workflows/static.yml

@@ -0,0 +1,29 @@
+name: Static analysis
+
+on:
+  pull_request:
+
+jobs:
+  php-cs-fixer:
+    name: PHP-CS-Fixer
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '7.4'
+          coverage: none
+          extensions: mbstring
+
+      - name: Download dependencies
+        run: composer update --no-interaction --no-progress
+
+      - name: Download PHP CS Fixer
+        run: composer require "friendsofphp/php-cs-fixer:2.18.4"
+
+      - name: Execute PHP CS Fixer
+        run: vendor/bin/php-cs-fixer fix --diff-format udiff --dry-run