fix(core): add VERSION file handling and comprehensive test coverage

This commit fixes version management and argument parsing issues across
both Windows and Linux/macOS platforms, achieving 100% test coverage.

Changes:
- Add VERSION file installation to both installers (install.sh, install.ps1)
- Fix version/help command detection when using 'powershell -File' syntax
- Rename PowerShell param from $Profile to $ProfileOrFlag for clarity
- Add $FirstArg detection to check both ProfileOrFlag and RemainingArgs
- Create comprehensive edge case test suites for both platforms:
  * tests/edge-cases.ps1 - 31 tests for Windows (100% pass)
  * tests/edge-cases.sh - 37 tests for Linux/macOS (100% pass)
- Fix multiline regex matching in tests for error messages
- Update test expectations to match platform-specific behavior
- Reorganize project structure:
  * Move installers to installers/ directory
  * Add scripts/ directory for version management
  * Add config/ directory for configuration templates
  * Add docs/ directory for documentation

Test Results:
- Windows (PowerShell): 31/31 tests passing (100%)
- Linux/macOS (Bash): 37/37 tests passing (100%)

Breaking Changes: None
- Installers moved but GitHub URLs updated in README files
- All existing functionality preserved

Co-authored-by: Claude Code <claude@anthropic.com>

scripts/worker.js

@@ -0,0 +1,46 @@
+export default {
+  async fetch(request) {
+    const url = new URL(request.url);
+
+    // Detect platform from User-Agent header
+    const userAgent = request.headers.get('user-agent') || '';
+    const isWindows = userAgent.includes('Windows') || userAgent.includes('Win32');
+    const isPowerShell = userAgent.includes('PowerShell') || userAgent.includes('pwsh');
+
+    // Smart routing with platform detection
+    let filePath;
+    if (url.pathname === '/install' || url.pathname === '/install.sh') {
+      filePath = (isWindows && isPowerShell) ? 'installers/install.ps1' : 'installers/install.sh';
+    } else if (url.pathname === '/install.ps1') {
+      filePath = 'installers/install.ps1';
+    } else if (url.pathname === '/uninstall' || url.pathname === '/uninstall.sh') {
+      filePath = (isWindows && isPowerShell) ? 'installers/uninstall.ps1' : 'installers/uninstall.sh';
+    } else if (url.pathname === '/uninstall.ps1') {
+      filePath = 'installers/uninstall.ps1';
+    } else {
+      return new Response('Not Found', { status: 404 });
+    }
+
+    try {
+      const githubUrl = `https://raw.githubusercontent.com/kaitranntt/ccs/main/${filePath}`;
+      const response = await fetch(githubUrl);
+
+      if (!response.ok) {
+        return new Response('File not found on GitHub', { status: 404 });
+      }
+
+      const contentType = filePath.endsWith('.ps1')
+        ? 'text/plain; charset=utf-8'
+        : 'text/x-shellscript; charset=utf-8';
+
+      return new Response(response.body, {
+        headers: {
+          'Content-Type': contentType,
+          'Cache-Control': 'public, max-age=300'
+        }
+      });
+    } catch (error) {
+      return new Response('Server Error', { status: 500 });
+    }
+  }
+};