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/91fd41224cd74ffd8410bc77b216693b/metadata.json

@@ -64,5 +64,94 @@
     "public": true,
     "publish": true,
     "skipped_files": []
-  }
+  },
+  "source_format": "easyeda-pro-legacy",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "b4b3614bc7184a1f9445d7885eb8f616",
+      "docType": 1,
+      "path": "source/b4b3614bc7184a1f9445d7885eb8f616.json",
+      "size": 859,
+      "sha256": "f0dbc7720da86375cc446f160dad7fc9c6d1c5d477da08f373cd163c8bb5a1b9"
+    },
+    {
+      "doc_uuid": "8ff7a425c871429c991ac3e4328d822f",
+      "docType": 1,
+      "path": "source/8ff7a425c871429c991ac3e4328d822f.json",
+      "size": 858,
+      "sha256": "4f298d0c990f2e04ad9035f657202da9b3598ccdfeb66a6d4c3acc22db83ca3a"
+    },
+    {
+      "doc_uuid": "817fee9e90af420e9330f22a582a2676",
+      "docType": 1,
+      "path": "source/817fee9e90af420e9330f22a582a2676.json",
+      "size": 755,
+      "sha256": "ab9232d1c4f394d77bece4d6005bb878d8aa101404d08da454c3975f76c4ec9c"
+    },
+    {
+      "doc_uuid": "1cf9c767c77348b3a829d81037eb932e",
+      "docType": 1,
+      "path": "source/1cf9c767c77348b3a829d81037eb932e.json",
+      "size": 755,
+      "sha256": "4b1b907c4ec8379b20d9527889bbe9dcc197d7fda146c9905dfb728c269ebed4"
+    },
+    {
+      "doc_uuid": "c852244acd994585aa4691f78a4d51bf",
+      "docType": 1,
+      "path": "source/c852244acd994585aa4691f78a4d51bf.json",
+      "size": 755,
+      "sha256": "d7221efc110cb7d7104df8b67323330c83d6d5917b8a83fe4b56f67fb0742572"
+    },
+    {
+      "doc_uuid": "391a0b1398e6497a9555ca42a41a8a1c",
+      "docType": 1,
+      "path": "source/391a0b1398e6497a9555ca42a41a8a1c.json",
+      "size": 755,
+      "sha256": "e86849bdb7f54214e3a0818107fbcce943bfdb7d26c70fcc84497a9bcd741db6"
+    },
+    {
+      "doc_uuid": "fdb574424e574b95b797e2f65bac104d",
+      "docType": 3,
+      "path": "source/pcb_fdb574424e574b95b797e2f65bac104d.json",
+      "size": 847,
+      "sha256": "763216a2f70dc5c7afbddc327a14e726325631038accd2065f0eb2643b883bea"
+    },
+    {
+      "doc_uuid": "6dd70de7266647b69de56d5fc821ce3e",
+      "docType": 3,
+      "path": "source/pcb_6dd70de7266647b69de56d5fc821ce3e.json",
+      "size": 878,
+      "sha256": "8e644f1340db2ee7f9600530fb40811cad098dd15aaa99b343733974e1fef892"
+    },
+    {
+      "doc_uuid": "69beddc786354e0eb294141c6ff2cb94",
+      "docType": 3,
+      "path": "source/pcb_69beddc786354e0eb294141c6ff2cb94.json",
+      "size": 845,
+      "sha256": "543c178d81e1efa69cce9833b009b002bbcd98feb066efbd6049ed7f3c93be32"
+    },
+    {
+      "doc_uuid": "a708fcf4b2014aeca660d61cba4ea94c",
+      "docType": 3,
+      "path": "source/pcb_a708fcf4b2014aeca660d61cba4ea94c.json",
+      "size": 865,
+      "sha256": "6dfed88f991f99e73ebee025cce3efeeafb132b69d65c87887f01f527904ce7b"
+    },
+    {
+      "doc_uuid": "98cf618227af4144bc219ec58ca653c9",
+      "docType": 3,
+      "path": "source/pcb_98cf618227af4144bc219ec58ca653c9.json",
+      "size": 878,
+      "sha256": "d34a969b95845e9d1ae0d7b67cb697b1065cb87a5a0bf3b0a4f969e08552db47"
+    },
+    {
+      "doc_uuid": "0f2f6d0927c543e5b0e800a389b31d2a",
+      "docType": 3,
+      "path": "source/pcb_0f2f6d0927c543e5b0e800a389b31d2a.json",
+      "size": 760,
+      "sha256": "317f5ffac63ff028f1b82db70fe4e5d62973b0a032352feed04767c93104984a"
+    }
+  ],
+  "editor_version": "2.2.35.1"
 }