test(M00): calibrate paired renderer checkpoints

Work-Package: M00-QAR-VISUAL-DIFF-001
Agent: sindo-main-codex
Tests: synthetic JPG/PNG diff, manifest, coordination and documentation gates
Fidelity: five build 12340 references compared; coordinate and placement gaps recorded

tools/run_render_baseline.ps1

@@ -7,6 +7,8 @@ param(
     [double]$MeasureSeconds = 3.0,
     [string]$ReferenceCheckpointDirectory,
     [string]$VisualComparisonReport = "user://render_baseline/visual_comparison.json",
+    [int]$VisualComparisonWidth = 2560,
+    [int]$VisualComparisonHeight = 1440,
     [switch]$DryRun
 )
 
@@ -63,12 +65,26 @@ try {
         if ($DryRun) {
             throw "Reference checkpoint comparison requires PNG capture; remove -DryRun"
         }
+		$visualCandidateOutput = "$Output/visual_comparison_candidates"
+		$visualCaptureArgs = @(
+			"--path", ".",
+			"--script", "res://src/tools/capture_render_checkpoints.gd",
+			"--",
+			"--output", $visualCandidateOutput,
+			"--cache-state", $CacheState,
+			"--revision", $revision,
+			"--wait", $WaitSeconds.ToString([Globalization.CultureInfo]::InvariantCulture),
+			"--measure", $MeasureSeconds.ToString([Globalization.CultureInfo]::InvariantCulture),
+			"--viewport-width", $VisualComparisonWidth.ToString(),
+			"--viewport-height", $VisualComparisonHeight.ToString()
+		)
+		Invoke-GodotStep "visual-capture" $visualCaptureArgs
         Invoke-GodotStep "visual-comparison" @(
             "--headless", "--path", ".",
             "--script", "res://src/tools/compare_render_checkpoints.gd",
             "--",
             "--reference", $ReferenceCheckpointDirectory,
-            "--candidate", $Output,
+            "--candidate", $visualCandidateOutput,
             "--output", $VisualComparisonReport
         )
     }