Initial commit: COPILOT D6 Flutter keyboard controller

Flutter web app replacing legacy WPF CCTV surveillance keyboard controller.
Includes wall overview, section view with monitor grid, camera input,
PTZ control, alarm/lock/sequence BLoCs, and legacy-matching UI styling.

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

.gitignore

@@ -0,0 +1,42 @@
+# Legacy app binaries and decompiled sources
+App/
+
+# Node.js
+node_modules/
+package-lock.json
+
+# Playwright
+.playwright-mcp/
+test-results/
+
+# Flutter build outputs
+copilot_keyboard/build/
+copilot_keyboard/.dart_tool/
+copilot_keyboard/.idea/
+copilot_keyboard/.flutter-plugins
+copilot_keyboard/.flutter-plugins-dependencies
+copilot_keyboard/.metadata
+copilot_keyboard/windows/
+
+# Temporary screenshots
+flutter_screenshot.png
+flutter_section_screenshot.png
+flutter_selected_screenshot.png
+flutter_fullscreen.png
+
+# Temp/utility scripts
+screenshot.js
+screenshot_fullscreen.js
+screenshot.mjs
+activate_and_screenshot.ps1
+maximize_and_screenshot.ps1
+take_screenshot.ps1
+convert_doc.ps1
+extract_doc.py
+extract_html.py
+test_coordinator.ps1
+package.json
+nul
+
+# Decompiled text dumps
+C*DEVCOPILOT_D6*