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/13f634be49f647319760111c0f7474fa/metadata.json

@@ -36,5 +36,82 @@
     "public": true,
     "publish": true,
     "skipped_files": []
-  }
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "4f4507e436cf4a3398fb9a4885806a2e",
+      "docType": 1,
+      "master": "84cb7850c2a04eeca116b81e2705afd3",
+      "path": "source/4f4507e436cf4a3398fb9a4885806a2e.json",
+      "size": 379214,
+      "sha256": "f89f38326057ed4c274c5f5efd4eeb83793e64d13fc0d7df807d80ca76fe43c9"
+    },
+    {
+      "doc_uuid": "15489eb123924d6e90bc6a5254ce47e8",
+      "docType": 1,
+      "master": "a6146623605448d6bb1350ea01a7b77b",
+      "path": "source/15489eb123924d6e90bc6a5254ce47e8.json",
+      "size": 379214,
+      "sha256": "f89f38326057ed4c274c5f5efd4eeb83793e64d13fc0d7df807d80ca76fe43c9"
+    },
+    {
+      "doc_uuid": "547ed9923c0441ed87b2965bc195963e",
+      "docType": 3,
+      "master": "d967d6bffde745fca3cacc4522927fcd",
+      "path": "source/547ed9923c0441ed87b2965bc195963e.json",
+      "size": 339937,
+      "sha256": "12eb98f2e7e3279a60cea12f4326a0ed2132cb7cbba546358954362083d7bf8f"
+    },
+    {
+      "doc_uuid": "6a9e16a7a5dd46f296166ca48c1f3f1a",
+      "docType": 1,
+      "master": "e9523b9f75324e6a887dc3adc78f6a2c",
+      "path": "source/6a9e16a7a5dd46f296166ca48c1f3f1a.json",
+      "size": 379214,
+      "sha256": "f89f38326057ed4c274c5f5efd4eeb83793e64d13fc0d7df807d80ca76fe43c9"
+    },
+    {
+      "doc_uuid": "1595c14c26a340c4a4055a219bdcb160",
+      "docType": 3,
+      "master": "c45d0cb5940b4331846876852e0048b1",
+      "path": "source/1595c14c26a340c4a4055a219bdcb160.json",
+      "size": 489095,
+      "sha256": "845a5ee40222342b287581f0bb5584d9a9d45d78a3192ee941c6209d9a3dfd90"
+    },
+    {
+      "doc_uuid": "a019cd371a284c1abfae233790f12d84",
+      "docType": 3,
+      "master": "331c7b375e3d47f9954e97c30dfb1928",
+      "path": "source/a019cd371a284c1abfae233790f12d84.json",
+      "size": 1815639,
+      "sha256": "cb383e74ae5f90291ff64d24c3916cdba5a8afc3990c7be980ca6839cbf10de4"
+    },
+    {
+      "doc_uuid": "309e45a0e528463a89335bc728501803",
+      "docType": 3,
+      "master": "74c7b82266354f9d9dbdc46029558c7f",
+      "path": "source/309e45a0e528463a89335bc728501803.json",
+      "size": 3430157,
+      "sha256": "4d5d158f95c166b9f2705436031cb9504b1303d5129a74ef96469cea2bd18ac0"
+    },
+    {
+      "doc_uuid": "4994265d6ab14e538356422a09bcf10b",
+      "docType": 3,
+      "master": "862a0f224fdd4fc2917d1b2241919337",
+      "path": "source/4994265d6ab14e538356422a09bcf10b.json",
+      "size": 893112,
+      "sha256": "879e77e9329e8d361109e9f2d44fdae3fabd964f3d9aa91d433d22000e780ac9"
+    },
+    {
+      "doc_uuid": "e6e0a75c37e549bab9638f665a781654",
+      "docType": 3,
+      "master": "09d20d06a2b5402d8bf2d976692bee90",
+      "path": "source/e6e0a75c37e549bab9638f665a781654.json",
+      "size": 1783920,
+      "sha256": "91915f977f06998999f7ae09256984ce37062b2842c96b8ec6f2145af076383a"
+    }
+  ],
+  "editor_version": "6.5.34"
 }