feat: hide Next Action when at expected starting state for current step

Implement precise logic to avoid redundant Next Action display:

- First step (index 0): Hide if currentValue === tutorial step startValue
- Subsequent steps: Hide if currentValue === previous step's targetValue

This ensures users see step instructions without redundant bead movement
guidance when they're at the natural starting point for each step, while
still providing helpful guidance when they're mid-action or off-track.

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

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

apps/web/src/components/tutorial/TutorialPlayer.tsx

@@ -834,11 +834,20 @@ export function TutorialPlayer({
                       const mathTerm = expectedSteps[index]?.mathematicalTerm
                       const isCurrentStep = index === currentMultiStep
 
-                      // Get the target value for this step to check if we need to show "Next Action"
-                      const stepTargetValue = expectedSteps[index]?.targetValue
-                      const hasChangesNeeded = currentValue !== stepTargetValue
+                      // Hide "Next Action" when at the expected starting state for this step
+                      const isAtExpectedStartingState = (() => {
+                        if (index === 0) {
+                          // First step: check if current value matches tutorial step start value
+                          return currentValue === currentStep.startValue
+                        } else {
+                          // Subsequent steps: check if current value matches previous step's target
+                          const previousStepTarget = expectedSteps[index - 1]?.targetValue
+                          return currentValue === previousStepTarget
+                        }
+                      })()
+
                       const hasMeaningfulSummary = currentStepSummary && !currentStepSummary.includes('No changes needed')
-                      const needsAction = isCurrentStep && hasChangesNeeded && hasMeaningfulSummary
+                      const needsAction = isCurrentStep && !isAtExpectedStartingState && hasMeaningfulSummary
 
                       return (
                         <div key={index}>