batch-50: Step 3-4 source download from Guangzhou — 49/50 ok

Run on dev1 (Guangzhou) for the latency advantage. Walltime 3:41 vs
Singapore-estimated 1-2h (~30x speedup, mostly from image.lceda.cn
RTT going from 263ms to 2.6ms).

Pro 25:  24 ok + 1 fail (Super Dial 7f7565ef11 — Pro 2.x legacy
                          schematic/lists 401, separate cookie-perm issue)
         611 docs, 31 MB total
Std 25:  25 ok, 97 docs, 74 MB total
Combined: 49/50 success, 708 docs, 105 MB new disk usage

--max-source-mb 200 cap was not tripped; the 25 Pro candidates are all
under 10 MB, so the 481 MB X86-board outlier from the original sample
was not representative.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

data/raw/oshwhub/f81e1c7f04774545a5c3d14212072a1e/metadata.json

@@ -46,5 +46,90 @@
     "public": true,
     "publish": true,
     "skipped_files": []
-  }
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "0e68756502194dbba1baa0230e15b4d2",
+      "docType": 3,
+      "master": "de530e13a0db4e729b8586436216c29c",
+      "path": "source/0e68756502194dbba1baa0230e15b4d2.json",
+      "size": 390228,
+      "sha256": "a3eabb449b5cf2874ecbb67c9973988a359af6afbc1d35e1673939d0c502b7fd"
+    },
+    {
+      "doc_uuid": "2b7a2d5477e1400ab4e108a74c807d9d",
+      "docType": 3,
+      "master": "2263d8947efb44d283e21df1e2f3ad96",
+      "path": "source/2b7a2d5477e1400ab4e108a74c807d9d.json",
+      "size": 62809,
+      "sha256": "4d1fdfc2a4f8d64fdfbaf438cc5b6371c7c592d717be6d27093dd56d8b167f0b"
+    },
+    {
+      "doc_uuid": "aa931c2262a248e09b8f271090872c3c",
+      "docType": 3,
+      "master": "f9ad9c81627a408a9a66f62bfa09b27e",
+      "path": "source/aa931c2262a248e09b8f271090872c3c.json",
+      "size": 425752,
+      "sha256": "12c47264be749c77d6d365a80ee2fae01af9a817b6b6bed145f5650cac3467a9"
+    },
+    {
+      "doc_uuid": "73018ddce427401e8f523169b3753ef0",
+      "docType": 3,
+      "master": "62b03b81bd204220a1ab2d9891a6e043",
+      "path": "source/73018ddce427401e8f523169b3753ef0.json",
+      "size": 1202240,
+      "sha256": "3c4123aad4eabc044651b1fca26fea943cb1a998eb3c75b5548e87eb715d56f0"
+    },
+    {
+      "doc_uuid": "02f25b7a6bea4090b47f942c06168df6",
+      "docType": 3,
+      "master": "e523bd0caa2c4f6aafcbb4192c21fad9",
+      "path": "source/02f25b7a6bea4090b47f942c06168df6.json",
+      "size": 829108,
+      "sha256": "cf62a16ed8b46fef450a41a07263a0a6aa9407311c6e6f44947ebfd4fbe8883d"
+    },
+    {
+      "doc_uuid": "3f94b16f950c4f26b247a5bb91a88a7a",
+      "docType": 1,
+      "master": "26edf39e90a7425890bc0dcf1f11a227",
+      "path": "source/3f94b16f950c4f26b247a5bb91a88a7a.json",
+      "size": 425709,
+      "sha256": "5dd4fa8e20b0123f6da96b3441d62d1328686dea87793ef7d0d4baebdd762339"
+    },
+    {
+      "doc_uuid": "5eb335481ba74f91b6cceaf4ae16bc99",
+      "docType": 3,
+      "master": "f4d312d60dd848959a7b9d2f4672ff3c",
+      "path": "source/5eb335481ba74f91b6cceaf4ae16bc99.json",
+      "size": 7987,
+      "sha256": "1ae6e388b1004c6551db4f6a90a252f1fa64e1fd5ffafa2a6957c2818eaa786a"
+    },
+    {
+      "doc_uuid": "726c5aff257c4d6e96cf0e5608033cbb",
+      "docType": 3,
+      "master": "b5912c48a89344c283e09b93839c7907",
+      "path": "source/726c5aff257c4d6e96cf0e5608033cbb.json",
+      "size": 482161,
+      "sha256": "750aac993394768923155aab04b1977f80c2d6d8d9e22a0f4aca570a2fe45b6a"
+    },
+    {
+      "doc_uuid": "2149d3935bb04f06a7c0eb2654dbe1bd",
+      "docType": 3,
+      "master": "7efdd1643acc4299b0b80eba37f37da5",
+      "path": "source/2149d3935bb04f06a7c0eb2654dbe1bd.json",
+      "size": 500974,
+      "sha256": "ee040aa38a4ae29b4f11a2aeb5dbe68f912f6a072121e4d38c5c7d5364c74545"
+    },
+    {
+      "doc_uuid": "0470704497254300b158cbdda9f69b27",
+      "docType": 3,
+      "master": "57624cbd99054c77a0a34aa4071d28e5",
+      "path": "source/0470704497254300b158cbdda9f69b27.json",
+      "size": 481775,
+      "sha256": "b353507529185d1f6a6ba6637959af0b4ddc11b7817818e1e0cfdc25b3f9b1e2"
+    }
+  ],
+  "editor_version": "6.4.25"
 }