fix(ci): fix E2E test and Windows npm install failures

**E2E Test Fix (TestE2E_InspectQuarantined):**
- Fixed type assertion for mcp.TextContent in quarantine inspection test
- Test was only checking for *mcp.TextContent (pointer) but content can be value type
- Added value type check consistent with debug logging (lines 1073-1078)

**Windows CI Fix:**
- Added PowerShell retry logic for npm ci on Windows (3 attempts with 5s wait)
- Windows has intermittent EPERM errors during npm cleanup
- Cleanup node_modules between retries to avoid stale state
- Uses --prefer-offline and --no-audit flags for faster installs
- Only applies to Windows matrix (Unix uses standard npm ci)

**Testing:**
- Verified TestE2E_InspectQuarantined passes locally
- Windows npm install will now retry on permission errors

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: Dumbris

.github/workflows/unit-tests.yml

@@ -171,7 +171,41 @@ jobs:
         with:
           node-version: '20'
 
-      - name: Install frontend dependencies
+      - name: Install frontend dependencies (Windows)
+        if: matrix.os == 'windows-latest'
+        shell: pwsh
+        run: |
+          cd frontend
+          $maxRetries = 3
+          $retryCount = 0
+
+          while ($retryCount -lt $maxRetries) {
+            $retryCount++
+            Write-Host "Attempting npm ci (attempt $retryCount/$maxRetries)..."
+
+            npm ci --prefer-offline --no-audit 2>&1 | Out-Host
+
+            if ($LASTEXITCODE -eq 0) {
+              Write-Host "npm ci succeeded"
+              break
+            }
+
+            if ($retryCount -lt $maxRetries) {
+              Write-Host "npm ci failed with exit code $LASTEXITCODE, waiting 5 seconds before retry..."
+              Start-Sleep -Seconds 5
+
+              if (Test-Path node_modules) {
+                Write-Host "Cleaning up node_modules..."
+                Remove-Item -Recurse -Force node_modules -ErrorAction SilentlyContinue
+              }
+            } else {
+              Write-Host "npm ci failed after $maxRetries attempts"
+              exit 1
+            }
+          }
+
+      - name: Install frontend dependencies (Unix)
+        if: matrix.os != 'windows-latest'
         run: cd frontend && npm ci
 
       - name: Build frontend

internal/server/e2e_test.go

@@ -1070,8 +1070,11 @@ func TestE2E_InspectQuarantined(t *testing.T) {
 	// Verify the result contains information about the tools
 	var resultText string
 	for _, content := range inspectResult.Content {
+		// Handle both pointer and value types
 		if textContent, ok := content.(*mcp.TextContent); ok {
 			resultText += textContent.Text
+		} else if textContent, ok := content.(mcp.TextContent); ok {
+			resultText += textContent.Text
 		}
 	}
 	assert.Contains(t, resultText, "test_tool_1", "Result should mention test_tool_1")