Form nesting analysis (lines inside main form with nested <form>):
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Line 24: === MAIN FORM OPENS ===
Line 338: NESTED FORM OPEN (depth now 3)
Line 360: NESTED FORM OPEN (depth now 4)
Line 381: NESTED FORM OPEN (depth now 5)
Line 404: NESTED FORM OPEN (depth now 6)
WARNING: Main form never properly closed!