diff --git a/.github/workflows/runtime-tests.yml b/.github/workflows/runtime-tests.yml
new file mode 100644
index 0000000..d6cb25a
--- /dev/null
+++ b/.github/workflows/runtime-tests.yml
@@ -0,0 +1,336 @@
+name: Runtime Tests
+
+on: 
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  runtime-tests:
+    runs-on: windows-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Setup MSVC
+        uses: ilammy/msvc-dev-cmd@v1
+      
+      - name: Initialize test results
+        run: |
+          @"
+          BUILD=⏳
+          HELP=⏳
+          VERSION=⏳
+          PID_TESTS=⏳
+          ERROR_HANDLING=⏳
+          PROCESS_LOOKUP=⏳
+          OUTPUT_VALIDATION=⏳
+          STRESS_TESTS=⏳
+          UNICODE=⏳
+          "@ | Out-File -FilePath test-results.txt
+      
+      - name: Build win-witr
+        id: build
+        continue-on-error: true
+        run: |
+          cl.exe /EHsc /std:c++20 main.cpp /Fe:win-witr.exe advapi32.lib iphlpapi.lib ws2_32.lib shell32.lib /DUNICODE /D_UNICODE
+          if ($LASTEXITCODE -ne 0) {
+            (Get-Content test-results.txt) -replace 'BUILD=⏳', 'BUILD=❌' | Set-Content test-results.txt
+            throw "Build failed!"
+          }
+          (Get-Content test-results.txt) -replace 'BUILD=⏳', 'BUILD=✅' | Set-Content test-results.txt
+      
+      # ============ HELP COMMAND TESTS ============
+      - name: Test help commands
+        id: help
+        continue-on-error: true
+        run: |
+          Write-Host "Testing --help flag..." -ForegroundColor Cyan
+          ./win-witr.exe --help
+          if ($LASTEXITCODE -ne 0) { 
+            (Get-Content test-results.txt) -replace 'HELP=⏳', 'HELP=❌' | Set-Content test-results.txt
+            throw "❌ Help command failed" 
+          }
+          
+          Write-Host "Testing -h flag..." -ForegroundColor Cyan
+          ./win-witr.exe -h
+          if ($LASTEXITCODE -ne 0) { 
+            (Get-Content test-results.txt) -replace 'HELP=⏳', 'HELP=❌' | Set-Content test-results.txt
+            throw "❌ Short help failed" 
+          }
+          
+          (Get-Content test-results.txt) -replace 'HELP=⏳', 'HELP=✅' | Set-Content test-results.txt
+          Write-Host "✅ Help tests passed" -ForegroundColor Green
+      
+      # ============ VERSION COMMAND TESTS ============
+      - name: Test version commands
+        id: version
+        continue-on-error: true
+        run: |
+          Write-Host "Testing --version flag..." -ForegroundColor Cyan
+          $output = ./win-witr.exe --version | Out-String
+          Write-Host $output
+          if ($output -notmatch "win-witr v\d+\.\d+\.\d+") {
+            (Get-Content test-results.txt) -replace 'VERSION=⏳', 'VERSION=❌' | Set-Content test-results.txt
+            throw "❌ Version format incorrect: $output"
+          }
+          
+          Write-Host "Testing -v flag..." -ForegroundColor Cyan
+          ./win-witr.exe -v
+          if ($LASTEXITCODE -ne 0) { 
+            (Get-Content test-results.txt) -replace 'VERSION=⏳', 'VERSION=❌' | Set-Content test-results.txt
+            throw "❌ Short version failed" 
+          }
+          
+          (Get-Content test-results.txt) -replace 'VERSION=⏳', 'VERSION=✅' | Set-Content test-results.txt
+          Write-Host "✅ Version tests passed" -ForegroundColor Green
+      
+      # ============ PID INSPECTION TESTS ============
+      - name: Test PID inspection
+        id: pid
+        continue-on-error: true
+        run: |
+          Write-Host "Testing --pid 0 (System Idle)..." -ForegroundColor Cyan
+          ./win-witr.exe --pid 0 2>&1 | Out-Null
+          
+          Write-Host "Testing --pid 4 (System)..." -ForegroundColor Cyan
+          ./win-witr.exe --pid 4 2>&1 | Out-Null
+          
+          Write-Host "Testing --pid with current process ($PID)..." -ForegroundColor Cyan
+          $output = ./win-witr.exe --pid $PID | Out-String
+          Write-Host $output
+          if ($LASTEXITCODE -ne 0) {
+            (Get-Content test-results.txt) -replace 'PID_TESTS=⏳', 'PID_TESTS=❌' | Set-Content test-results.txt
+            throw "❌ Current process PID inspection failed"
+          }
+          if ($output -notmatch "Process Ancestry") {
+            (Get-Content test-results.txt) -replace 'PID_TESTS=⏳', 'PID_TESTS=❌' | Set-Content test-results.txt
+            throw "❌ Output missing 'Process Ancestry'"
+          }
+          
+          Write-Host "Testing --pid with explorer.exe..." -ForegroundColor Cyan
+          $explorerPid = (Get-Process explorer -ErrorAction SilentlyContinue | Select-Object -First 1).Id
+          if ($explorerPid) {
+            Write-Host "Found explorer.exe with PID: $explorerPid"
+            ./win-witr.exe --pid $explorerPid 2>&1 | Out-Null
+          }
+          
+          (Get-Content test-results.txt) -replace 'PID_TESTS=⏳', 'PID_TESTS=✅' | Set-Content test-results.txt
+          Write-Host "✅ PID tests passed" -ForegroundColor Green
+      
+      # ============ ERROR HANDLING TESTS ============
+      - name: Test error handling
+        id: errors
+        continue-on-error: true
+        run: |
+          $failed = $false
+          
+          Write-Host "Testing --pid with non-existent PID (99999)..." -ForegroundColor Cyan
+          $ErrorActionPreference = 'Continue'
+          $output = cmd /c "win-witr.exe --pid 99999 2>&1"
+          if ($LASTEXITCODE -eq 0) {
+            Write-Host "❌ Should fail with non-existent PID" -ForegroundColor Red
+            $failed = $true
+          } else {
+            Write-Host "✅ Correctly failed with non-existent PID" -ForegroundColor Green
+          }
+          
+          Write-Host "Testing --pid with non-numeric argument..." -ForegroundColor Cyan
+          $output = cmd /c "win-witr.exe --pid notanumber 2>&1"
+          if ($LASTEXITCODE -eq 0) {
+            Write-Host "❌ Should fail with non-numeric PID" -ForegroundColor Red
+            $failed = $true
+          } elseif (($output -join " ") -notmatch "not a valid number") {
+            Write-Host "❌ Missing proper error message for non-numeric PID" -ForegroundColor Red
+            $failed = $true
+          } else {
+            Write-Host "✅ Correctly failed with non-numeric PID" -ForegroundColor Green
+          }
+          
+          Write-Host "Testing --pid without argument..." -ForegroundColor Cyan
+          $output = cmd /c "win-witr.exe --pid 2>&1"
+          if ($LASTEXITCODE -eq 0) {
+            Write-Host "❌ Should fail when --pid has no argument" -ForegroundColor Red
+            $failed = $true
+          } elseif (($output -join " ") -notmatch "requires an argument") {
+            Write-Host "❌ Missing 'requires argument' error" -ForegroundColor Red
+            $failed = $true
+          } else {
+            Write-Host "✅ Correctly failed with missing argument" -ForegroundColor Green
+          }
+          
+          if ($failed) {
+            (Get-Content test-results.txt) -replace 'ERROR_HANDLING=⏳', 'ERROR_HANDLING=❌' | Set-Content test-results.txt
+            Write-Host "❌ Error handling tests failed" -ForegroundColor Red
+          } else {
+            (Get-Content test-results.txt) -replace 'ERROR_HANDLING=⏳', 'ERROR_HANDLING=✅' | Set-Content test-results.txt
+            Write-Host "✅ Error handling tests passed" -ForegroundColor Green
+          }
+      
+      # ============ PROCESS NAME LOOKUP TESTS ============
+      - name: Test process name lookup
+        id: lookup
+        continue-on-error: true
+        run: |
+          $failed = $false
+          
+          Write-Host "Testing process name lookup for svchost.exe..." -ForegroundColor Cyan
+          ./win-witr.exe svchost.exe 2>&1 | Out-Null
+          
+          Write-Host "Testing process name lookup for explorer.exe..." -ForegroundColor Cyan
+          ./win-witr.exe explorer.exe 2>&1 | Out-Null
+          
+          Write-Host "Testing with non-existent process name..." -ForegroundColor Cyan
+          $ErrorActionPreference = 'Continue'
+          $output = cmd /c "win-witr.exe totallyFakeProcess.exe 2>&1"
+          if ($LASTEXITCODE -eq 0) {
+            Write-Host "❌ Should fail for non-existent process" -ForegroundColor Red
+            $failed = $true
+          } elseif (($output -join " ") -notmatch "Could not find process") {
+            Write-Host "❌ Missing proper error message for non-existent process" -ForegroundColor Red
+            $failed = $true
+          } else {
+            Write-Host "✅ Correctly failed with non-existent process" -ForegroundColor Green
+          }
+          
+          if ($failed) {
+            (Get-Content test-results.txt) -replace 'PROCESS_LOOKUP=⏳', 'PROCESS_LOOKUP=❌' | Set-Content test-results.txt
+            Write-Host "❌ Process lookup tests failed" -ForegroundColor Red
+          } else {
+            (Get-Content test-results.txt) -replace 'PROCESS_LOOKUP=⏳', 'PROCESS_LOOKUP=✅' | Set-Content test-results.txt
+            Write-Host "✅ Process lookup tests passed" -ForegroundColor Green
+          }
+      
+      # ============ OUTPUT FORMAT VALIDATION ============
+      - name: Test output validation
+        id: output
+        continue-on-error: true
+        run: |
+          Write-Host "Validating output format..." -ForegroundColor Cyan
+          $output = ./win-witr.exe --pid $PID | Out-String
+          $requiredFields = @("Executable Path", "Process Ancestry", "Started")
+          foreach ($field in $requiredFields) {
+            if ($output -notmatch [regex]::Escape($field)) {
+              (Get-Content test-results.txt) -replace 'OUTPUT_VALIDATION=⏳', 'OUTPUT_VALIDATION=❌' | Set-Content test-results.txt
+              throw "❌ Output missing required field: $field"
+            }
+          }
+          
+          Write-Host "Testing ancestry tree formatting..." -ForegroundColor Cyan
+          if ($output -notmatch "PID") {
+            (Get-Content test-results.txt) -replace 'OUTPUT_VALIDATION=⏳', 'OUTPUT_VALIDATION=❌' | Set-Content test-results.txt
+            throw "❌ Ancestry tree not properly formatted"
+          }
+          
+          Write-Host "Testing timestamp format..." -ForegroundColor Cyan
+          if ($output -notmatch "ago") {
+            (Get-Content test-results.txt) -replace 'OUTPUT_VALIDATION=⏳', 'OUTPUT_VALIDATION=❌' | Set-Content test-results.txt
+            throw "❌ Timestamp format incorrect"
+          }
+          
+          (Get-Content test-results.txt) -replace 'OUTPUT_VALIDATION=⏳', 'OUTPUT_VALIDATION=✅' | Set-Content test-results.txt
+          Write-Host "✅ Output validation passed" -ForegroundColor Green
+      
+      # ============ STRESS TESTS ============
+      - name: Test stress and performance
+        id: stress
+        continue-on-error: true
+        run: |
+          Write-Host "Running stress test (50 rapid requests)..." -ForegroundColor Cyan
+          for ($i = 0; $i -lt 50; $i++) {
+            ./win-witr.exe --pid $PID | Out-Null
+            if ($LASTEXITCODE -ne 0) {
+              (Get-Content test-results.txt) -replace 'STRESS_TESTS=⏳', 'STRESS_TESTS=❌' | Set-Content test-results.txt
+              throw "❌ Stress test failed at iteration $i"
+            }
+          }
+          
+          Write-Host "Testing against multiple running processes..." -ForegroundColor Cyan
+          $processes = Get-Process | Where-Object { $_.Id -ne 0 -and $_.Id -ne 4 } | Select-Object -First 5
+          foreach ($proc in $processes) {
+            Write-Host "  Testing PID $($proc.Id) ($($proc.Name))..."
+            ./win-witr.exe --pid $proc.Id 2>&1 | Out-Null
+          }
+          
+          (Get-Content test-results.txt) -replace 'STRESS_TESTS=⏳', 'STRESS_TESTS=✅' | Set-Content test-results.txt
+          Write-Host "✅ Stress tests passed (50 iterations)" -ForegroundColor Green
+      
+      # ============ UNICODE HANDLING ============
+      - name: Test Unicode handling
+        id: unicode
+        continue-on-error: true
+        run: |
+          Write-Host "Testing Unicode character handling..." -ForegroundColor Cyan
+          [Console]::OutputEncoding = [System.Text.Encoding]::UTF8
+          $output = ./win-witr.exe --pid $PID 2>&1 | Out-String
+          if ($LASTEXITCODE -ne 0) {
+            (Get-Content test-results.txt) -replace 'UNICODE=⏳', 'UNICODE=❌' | Set-Content test-results.txt
+            throw "❌ Unicode handling failed"
+          }
+          
+          (Get-Content test-results.txt) -replace 'UNICODE=⏳', 'UNICODE=✅' | Set-Content test-results.txt
+          Write-Host "✅ Unicode test passed" -ForegroundColor Green
+      
+      # ============ FINAL SUMMARY ============
+      - name: Display summary
+        if: always()
+        run: |
+          Write-Host ""
+          Write-Host "========================================" -ForegroundColor Magenta
+          Write-Host "   🎉 RUNTIME TESTS COMPLETED! 🎉" -ForegroundColor Magenta
+          Write-Host "========================================" -ForegroundColor Magenta
+          Get-Content test-results.txt
+          Write-Host ""
+      
+      # ============ POST PR COMMENT ============
+      - name: Post PR comment with results
+        if: github.event_name == 'pull_request' && always()
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          $results = Get-Content test-results.txt | ConvertFrom-StringData
+          
+          $allPassed = $true
+          foreach ($value in $results.Values) {
+            if ($value -ne '✅') {
+              $allPassed = $false
+              break
+            }
+          }
+          
+          $emoji = if ($allPassed) { '🎉' } else { '⚠️' }
+          $status = if ($allPassed) { 'All Tests Passed!' } else { 'Some Tests Failed' }
+          
+          $comment = @"
+          ## $emoji Runtime Tests Report
+
+          **Status:** $status
+          **Run:** [#${{ github.run_number }}](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})
+
+          | Test Category | Result |
+          |---------------|--------|
+          | 🔨 Build | $($results.BUILD) |
+          | 📖 Help Commands | $($results.HELP) |
+          | 🏷️ Version Commands | $($results.VERSION) |
+          | 🔍 PID Inspection | $($results.PID_TESTS) |
+          | ⚠️ Error Handling | $($results.ERROR_HANDLING) |
+          | 🔎 Process Lookup | $($results.PROCESS_LOOKUP) |
+          | ✏️ Output Validation | $($results.OUTPUT_VALIDATION) |
+          | 🚀 Stress Tests | $($results.STRESS_TESTS) |
+          | 🌐 Unicode Handling | $($results.UNICODE) |
+
+          ---
+          <sub>🤖 Automated test report by GitHub Actions</sub>
+          "@
+          
+          $comment | Out-File -FilePath comment.txt -Encoding utf8
+          
+          gh pr comment ${{ github.event.pull_request.number }} --body-file comment.txt
+          
+          Write-Host "✅ Posted comment to PR #${{ github.event.pull_request.number }}" -ForegroundColor Green
\ No newline at end of file