Removing skip teardown option from integration test workflow (#91)

* Remove skip_teardown option from integration-test workflow

* Update integration-test defaults and branch gating

* Restore run-roundtrip-test script and keep SkipTeardown removal in workflow only

* Revert default region from eastus back to centralus

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

Author: Copilot

.github/workflows/integration-test.yml

@@ -32,7 +32,6 @@ on:
         type: choice
         options:
           - StandardV2
-          - Developer
           - Premium
           - PremiumV2
         default: StandardV2
@@ -46,11 +45,6 @@ on:
         required: false
         type: string
         default: Verbose
-      skip_teardown:
-        description: 'Skip teardown (for debugging)'
-        required: false
-        type: boolean
-        default: false
 
   workflow_call:
     inputs:
@@ -69,11 +63,6 @@ on:
         required: false
         type: string
         default: Verbose
-      skip_teardown:
-        description: 'Skip teardown (for debugging)'
-        required: false
-        type: boolean
-        default: false
     secrets:
       AZURE_CLIENT_ID:
         required: true
@@ -99,6 +88,7 @@ env:
 jobs:
   roundtrip-test:
     name: Extract→Publish Round-Trip
+    if: github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
     timeout-minutes: 120
     environment: integration-test # Requires approval for cost protection
@@ -123,7 +113,6 @@ jobs:
       - name: Run Round-Trip Test
         shell: pwsh
         run: |
-          $skipTeardown = '${{ inputs.skip_teardown }}' -eq 'true'
           $logLevel = '${{ inputs.log_level }}'
           if ([string]::IsNullOrWhiteSpace($logLevel)) { $logLevel = 'Verbose' }
           if ($logLevel -notin @('Info', 'Verbose', 'Debug')) {
@@ -140,7 +129,6 @@ jobs:
             ExtractOutputDir   = './extracted-artifacts'
             HardDelete         = $true
           }
-          if ($skipTeardown) { $params.SkipTeardown = $true }
 
           ./tests/integration/all-resource-types/run-roundtrip-test.ps1 @params
 
@@ -153,7 +141,7 @@ jobs:
           if-no-files-found: ignore
 
       - name: Emergency Teardown
-        if: failure() && inputs.skip_teardown != true
+        if: failure()
         shell: pwsh
         run: |
           $sourceRg = '${{ env.SOURCE_RG }}'