commit e8177e67ba62d8289bd14f03a4319979051ed8b2
Author: Dr.Lt.Data <dr.lt.data@gmail.com>
Date:   Fri Nov 13 22:11:22 2026 +0900

    Add validation evidence for the v4 Fix node (recreate) fix

diff --git a/README.md b/README.md
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+# Validation evidence: v4 "Fix node (recreate)" with string node ids
+
+Implementation: `5a14b552389885e214526ffc47e11b10c70d49a3` on `fix/v4-node-fixer-recreate`, targeting `manager-v4`.
+
+- `v4-node-fixer-recreate-pr-assets/annotated/`: the captures with boxes and captions laid over them
+- `v4-node-fixer-recreate-pr-assets/screens/`: the unmodified browser captures
+- `v4-node-fixer-recreate-pr-assets/evidence.json`: what was captured, from which `node_fixer.js`, with hashes
+- `v4-node-fixer-recreate-pr-assets/capture_evidence.cjs`: the script that made the captures
+- `manifest.json`: checksums of the files here
diff --git a/manifest.json b/manifest.json
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+{
+  "implementation_head": "5a14b552389885e214526ffc47e11b10c70d49a3",
+  "files": {
+    "v4-node-fixer-recreate-pr-assets/annotated/green-2-clicked.png": {
+      "bytes": 83290,
+      "sha256": "80bdbaf612dd7b943093da8bba5c46600aa17b4feba5d7112af26111f856ef6d"
+    },
+    "v4-node-fixer-recreate-pr-assets/annotated/green-3-moved.png": {
+      "bytes": 111977,
+      "sha256": "b525d594b2075240182abf4fe3f511f0e659725b40e8a5076e620edf020d5eb5"
+    },
+    "v4-node-fixer-recreate-pr-assets/annotated/red-2-clicked.png": {
+      "bytes": 102151,
+      "sha256": "418639b288004017e7483822016d444ccd20e0537d5f5e5dffa3923683b6ca07"
+    },
+    "v4-node-fixer-recreate-pr-assets/annotated/red-3-moved.png": {
+      "bytes": 111159,
+      "sha256": "c60dcbb406fa0ca826474b4eed63c265c745f942e85c1fdfef505c2fd56145f0"
+    },
+    "v4-node-fixer-recreate-pr-assets/capture_evidence.cjs": {
+      "bytes": 5600,
+      "sha256": "5a0095ea2318b1039114352e1c463d911dc75039ff79801ab66f1ae95ed49f45"
+    },
+    "v4-node-fixer-recreate-pr-assets/evidence.json": {
+      "bytes": 3511,
+      "sha256": "4cb612b6a83a6a7116006501acb210d648e95e3e64696526d7582da9efbde782"
+    },
+    "v4-node-fixer-recreate-pr-assets/screens/green-2-clicked.png": {
+      "bytes": 69923,
+      "sha256": "da8466d7f2bb993a664c106f3f8c0522dae9699668594581ae5b222f257e8d88"
+    },
+    "v4-node-fixer-recreate-pr-assets/screens/green-3-moved.png": {
+      "bytes": 90285,
+      "sha256": "f4469655d55aa5ef68fe295ea48af9b9603690c76fa532c06fe7425f7afbc01f"
+    },
+    "v4-node-fixer-recreate-pr-assets/screens/red-2-clicked.png": {
+      "bytes": 88270,
+      "sha256": "eb73c9fa42d4b96e817de3e3ff46e48fb97a01729a722bc1451a39f118bb1b8a"
+    },
+    "v4-node-fixer-recreate-pr-assets/screens/red-3-moved.png": {
+      "bytes": 90941,
+      "sha256": "09dc655c7519d9b3dbbcd53d151e83dfb0c3a0e8c6b0424256229900ba8a14fd"
+    }
+  }
+}
diff --git a/v4-node-fixer-recreate-pr-assets/annotated/green-2-clicked.png b/v4-node-fixer-recreate-pr-assets/annotated/green-2-clicked.png
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diff --git a/v4-node-fixer-recreate-pr-assets/annotated/green-3-moved.png b/v4-node-fixer-recreate-pr-assets/annotated/green-3-moved.png
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diff --git a/v4-node-fixer-recreate-pr-assets/annotated/red-2-clicked.png b/v4-node-fixer-recreate-pr-assets/annotated/red-2-clicked.png
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diff --git a/v4-node-fixer-recreate-pr-assets/annotated/red-3-moved.png b/v4-node-fixer-recreate-pr-assets/annotated/red-3-moved.png
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diff --git a/v4-node-fixer-recreate-pr-assets/capture_evidence.cjs b/v4-node-fixer-recreate-pr-assets/capture_evidence.cjs
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+// Captures the Red/Green screens for "Fix node (recreate)".
+// Same steps on both sides; only the served node_fixer.js differs.
+//
+// usage: node capture_evidence.cjs <playwright-core dir> <base url> <label> <out dir>
+//   label: "red" or "green" (names the output files only)
+//
+// Steps:
+//   1. build CheckpointLoaderSimple -> KSampler -> VAEDecode on an empty canvas
+//   2. capture                                           -> <label>-1-before.png
+//   3. right-click the KSampler title, click "Fix node (recreate)"
+//   4. capture                                           -> <label>-2-clicked.png
+//   5. click an empty spot of the canvas (closes a context menu left open)
+//   6. drag whatever node is at the KSampler title 290px down
+//   7. capture                                           -> <label>-3-moved.png
+// Step 6 is there because the replacement is created exactly on top of the
+// original, so a leftover original cannot be seen without moving the top node.
+const fs = require('fs');
+const path = require('path');
+const crypto = require('crypto');
+const [pwDir, baseURL, label, outDir] = process.argv.slice(2);
+const { chromium } = require(pwDir);
+const sha256 = (buf) => crypto.createHash('sha256').update(buf).digest('hex');
+const DRAG_DY = 290;
+
+(async () => {
+  const browser = await chromium.launch({ channel: 'chrome', headless: true });
+  const page = await (await browser.newContext({ viewport: { width: 1280, height: 800 }, locale: 'en-US' })).newPage();
+  const pageErrors = [];
+  page.on('pageerror', (e) => pageErrors.push(e.message));
+  await page.goto(baseURL, { waitUntil: 'load' });
+  await page.waitForFunction(() => !!window.LiteGraph?.registered_node_types?.KSampler, { timeout: 60_000 });
+  await page.waitForTimeout(4000);
+  await page.keyboard.press('Escape');
+  await page.waitForTimeout(500);
+
+  const served = await page.evaluate(async () => {
+    const text = await (await fetch('/extensions/comfyui-manager-legacy/node_fixer.js')).text();
+    return { text, line: text.split('\n').find((l) => l.includes('src_node.connect')).trim() };
+  });
+
+  const original = await page.evaluate(() => {
+    const { app, LiteGraph } = window;
+    const graph = app.canvas.graph;
+    graph.clear();
+    const add = (type, x) => { const n = LiteGraph.createNode(type); n.pos = [x, 150]; graph.add(n); return n; };
+    const loader = add('CheckpointLoaderSimple', 50);
+    const sampler = add('KSampler', 500);
+    const decoder = add('VAEDecode', 900);
+    loader.connect(0, sampler, 'model');
+    sampler.connect(0, decoder, 'samples');
+    app.canvas.ds.offset = [0, 0];
+    app.canvas.ds.scale = 1;
+    app.canvas.draw(true, true);
+    return { id: sampler.id, idType: typeof sampler.id, x: sampler.pos[0] + 60, y: sampler.pos[1] - LiteGraph.NODE_TITLE_HEIGHT / 2 };
+  });
+  await page.waitForTimeout(500);
+
+  const readNodes = () => page.evaluate((originalId) => {
+    const { app, LiteGraph } = window;
+    return app.canvas.graph.nodes.map((n) => ({
+      id: n.id, type: n.type,
+      isOriginal: n.id === originalId,
+      inputsFrom: Object.fromEntries(n.inputs.filter((i) => i.link != null)
+        .map((i) => [i.name, n.getInputNode(n.findInputSlot(i.name))?.type ?? null])),
+      outputsTo: (n.outputs?.[0] ? n.getOutputNodes(0) ?? [] : []).map((t) => t.type),
+      // client-space box including the title bar (canvas at 0,0, scale 1)
+      box: [n.pos[0], n.pos[1] - LiteGraph.NODE_TITLE_HEIGHT, n.size[0], n.size[1] + LiteGraph.NODE_TITLE_HEIGHT].map(Math.round),
+    }));
+  }, original.id);
+
+  const shot = async (name) => {
+    const file = path.join(outDir, name);
+    await page.screenshot({ path: file });
+    return { file: name, sha256: sha256(fs.readFileSync(file)) };
+  };
+
+  const before = { nodes: await readNodes(), capture: await shot(`${label}-1-before.png`) };
+
+  await page.mouse.click(original.x, original.y, { button: 'right' });
+  await page.locator('.litecontextmenu .litemenu-entry', { hasText: 'Fix node (recreate)' }).click();
+  await page.waitForTimeout(500);
+  const clicked = {
+    contextMenuOpen: await page.locator('.litecontextmenu').count() > 0,
+    nodes: await readNodes(),
+    capture: await shot(`${label}-2-clicked.png`),
+  };
+
+  await page.mouse.click(1000, 520);
+  await page.waitForTimeout(300);
+  await page.mouse.move(original.x, original.y);
+  await page.mouse.down();
+  await page.mouse.move(original.x, original.y + DRAG_DY, { steps: 15 });
+  await page.mouse.up();
+  await page.mouse.move(40, 760);
+  await page.waitForTimeout(700);
+
+  const after = { nodes: await readNodes(), capture: await shot(`${label}-3-moved.png`) };
+
+  const result = {
+    label,
+    capturedAt: new Date().toISOString(),
+    baseURL,
+    frontend: await page.evaluate(() => window.__COMFYUI_FRONTEND_VERSION__ ?? null),
+    viewport: [1280, 800],
+    nodeFixer: { sha256: sha256(Buffer.from(served.text, 'utf-8')), connectLine: served.line },
+    originalSampler: { id: original.id, idType: original.idType },
+    dragDy: DRAG_DY,
+    pageErrors,
+    before,
+    clicked,
+    after,
+  };
+  fs.writeFileSync(path.join(outDir, `${label}.json`), JSON.stringify(result, null, 2) + '\n');
+  await browser.close();
+  console.log(JSON.stringify({
+    label, frontend: result.frontend, idType: original.idType, line: served.line, pageErrors, menuOpenAfterClick: clicked.contextMenuOpen,
+    after: after.nodes.map((n) => `${n.type}#${n.id}${n.isOriginal ? '(original)' : ''} in=${JSON.stringify(n.inputsFrom)} out=${JSON.stringify(n.outputsTo)} box=${n.box}`),
+  }, null, 1));
+})().catch((e) => { console.error(e); process.exit(1); });
diff --git a/v4-node-fixer-recreate-pr-assets/evidence.json b/v4-node-fixer-recreate-pr-assets/evidence.json
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+{
+  "scenario": "Fix node (recreate) on a KSampler wired CheckpointLoaderSimple -> KSampler -> VAEDecode",
+  "steps": "see the header of capture_evidence.cjs",
+  "red": {
+    "frontend": "1.57.6",
+    "nodeIdType": "string",
+    "capturedAt": "2026-11-13T13:03:30.402Z",
+    "nodeFixer": {
+      "sha256": "92e88ee61108c4679acb903ecbcd279c2c56f68f61b760a5945f5136b4b8c1cf",
+      "connectLine": "src_node.connect(link.origin_slot, dest.id, input.name);"
+    },
+    "pageErrors": [
+      "t.findInputSlot is not a function"
+    ],
+    "contextMenuOpenAfterClick": true,
+    "kSamplersAtEnd": [
+      {
+        "id": "2",
+        "isOriginal": true,
+        "inputsFrom": {
+          "model": "CheckpointLoaderSimple"
+        },
+        "outputsTo": [
+          "VAEDecode"
+        ]
+      },
+      {
+        "id": "4",
+        "isOriginal": false,
+        "inputsFrom": {},
+        "outputsTo": []
+      }
+    ],
+    "nodeCountAtEnd": 4
+  },
+  "green": {
+    "frontend": "1.57.6",
+    "nodeIdType": "string",
+    "capturedAt": "2026-11-13T13:03:38.668Z",
+    "nodeFixer": {
+      "sha256": "d857b9ae4a6a7b171f52d309fbffcc9f60c68eb1a806b3e9bf2be7ebc6fdc305",
+      "connectLine": "src_node.connect(link.origin_slot, dest, input.name);"
+    },
+    "pageErrors": [],
+    "contextMenuOpenAfterClick": false,
+    "kSamplersAtEnd": [
+      {
+        "id": "4",
+        "isOriginal": false,
+        "inputsFrom": {
+          "model": "CheckpointLoaderSimple"
+        },
+        "outputsTo": [
+          "VAEDecode"
+        ]
+      }
+    ],
+    "nodeCountAtEnd": 3
+  },
+  "figures": [
+    {
+      "figure": "red-2-clicked",
+      "side": "red",
+      "step": "Right after clicking \"Fix node (recreate)\"",
+      "raw": {
+        "file": "screens/red-2-clicked.png",
+        "sha256": "eb73c9fa42d4b96e817de3e3ff46e48fb97a01729a722bc1451a39f118bb1b8a"
+      },
+      "annotated": {
+        "file": "annotated/red-2-clicked.png",
+        "sha256": "418639b288004017e7483822016d444ccd20e0537d5f5e5dffa3923683b6ca07"
+      }
+    },
+    {
+      "figure": "green-2-clicked",
+      "side": "green",
+      "step": "Right after clicking \"Fix node (recreate)\"",
+      "raw": {
+        "file": "screens/green-2-clicked.png",
+        "sha256": "da8466d7f2bb993a664c106f3f8c0522dae9699668594581ae5b222f257e8d88"
+      },
+      "annotated": {
+        "file": "annotated/green-2-clicked.png",
+        "sha256": "80bdbaf612dd7b943093da8bba5c46600aa17b4feba5d7112af26111f856ef6d"
+      }
+    },
+    {
+      "figure": "red-3-moved",
+      "side": "red",
+      "step": "After dragging the node at the KSampler title 290px down",
+      "raw": {
+        "file": "screens/red-3-moved.png",
+        "sha256": "09dc655c7519d9b3dbbcd53d151e83dfb0c3a0e8c6b0424256229900ba8a14fd"
+      },
+      "annotated": {
+        "file": "annotated/red-3-moved.png",
+        "sha256": "c60dcbb406fa0ca826474b4eed63c265c745f942e85c1fdfef505c2fd56145f0"
+      }
+    },
+    {
+      "figure": "green-3-moved",
+      "side": "green",
+      "step": "After dragging the node at the KSampler title 290px down",
+      "raw": {
+        "file": "screens/green-3-moved.png",
+        "sha256": "f4469655d55aa5ef68fe295ea48af9b9603690c76fa532c06fe7425f7afbc01f"
+      },
+      "annotated": {
+        "file": "annotated/green-3-moved.png",
+        "sha256": "b525d594b2075240182abf4fe3f511f0e659725b40e8a5076e620edf020d5eb5"
+      }
+    }
+  ],
+  "note": "annotated/*.png = screens/*.png with an HTML overlay rendered on top; screens/*.png are the unmodified captures."
+}
diff --git a/v4-node-fixer-recreate-pr-assets/screens/green-2-clicked.png b/v4-node-fixer-recreate-pr-assets/screens/green-2-clicked.png
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