اضافه شدن قابلیت مقایسه شماتیک

frontend/compare-upload.html

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+<html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Compare Altium schematics</title><link rel="stylesheet" href="/assets/upload.css"><script type="module" src="/assets/compare-upload.js"></script></head><body><main><p class="eyebrow">NATIVE ALTIUM · STRUCTURAL DIFF</p><h1>Compare schematics.</h1><p>Select the original and modified SchDoc files.</p><form id="compare-upload"><label for="key">API key</label><input id="key" type="password" autocomplete="off" placeholder="Configured service key"><label for="old-file">Original schematic</label><input id="old-file" type="file" accept=".SchDoc" required><label for="new-file">Modified schematic</label><input id="new-file" type="file" accept=".SchDoc" required><button type="submit">Compare schematics <span aria-hidden="true">↗</span></button></form><output id="result" role="status"></output><p class="note">Comparison uses native objects and saved geometry. Connection graphics are compared without a compiled electrical netlist.</p><a href="/">Single schematic viewer</a></main></body></html>