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/9158ea94e9654f6eb2cca93b5c2a9c32/metadata.json

@@ -73,5 +73,82 @@
     "public": true,
     "publish": true,
     "skipped_files": []
-  }
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "8ce25474ebfe4bdaa081a6d634aef197",
+      "docType": 1,
+      "master": "916a38ecbafa40ddb0c939a77a0d03b0",
+      "path": "source/8ce25474ebfe4bdaa081a6d634aef197.json",
+      "size": 118695,
+      "sha256": "7538f42932e35d95ac06a934be4f64fc5cf4ad2b0cdfe1019ad54d355225d13b"
+    },
+    {
+      "doc_uuid": "5fa2f9b7635c4b6c94b9c737129f2242",
+      "docType": 3,
+      "master": "21232cdfcd4d4f799bbfdcc1c81c49f8",
+      "path": "source/5fa2f9b7635c4b6c94b9c737129f2242.json",
+      "size": 1199597,
+      "sha256": "85c8d9706beae30de7be052db562add8f98cffaf004bb0683ee0da4bfc1f84df"
+    },
+    {
+      "doc_uuid": "7cd87edc61ad4f848abc9a2e6cab761f",
+      "docType": 3,
+      "master": "7b9cf2a5d22246589a828814d8be77b9",
+      "path": "source/7cd87edc61ad4f848abc9a2e6cab761f.json",
+      "size": 569228,
+      "sha256": "e789c63a1e2ed74392ec03ec9b80ba6eff7224470791fb1a09b53e88c7395259"
+    },
+    {
+      "doc_uuid": "9196001047de42ec8c02d46c7e121702",
+      "docType": 3,
+      "master": "2959b9688d82418294a5322c62a62ff3",
+      "path": "source/9196001047de42ec8c02d46c7e121702.json",
+      "size": 485630,
+      "sha256": "972254c2f36c4f984215c2cce4f24de1554163d2f8d42a52cab7b84b9a81421f"
+    },
+    {
+      "doc_uuid": "ac9a7e8aa80e44a7b4423f7c65647c1a",
+      "docType": 3,
+      "master": "dda8170224df4e7bbe837eecf956bee0",
+      "path": "source/ac9a7e8aa80e44a7b4423f7c65647c1a.json",
+      "size": 993681,
+      "sha256": "19d8966863c2586215ce73eb24da3d2ba74aa9cc5c003ac6c745daea9848588a"
+    },
+    {
+      "doc_uuid": "6f93583d22c1453eabc7566d8c1665b3",
+      "docType": 3,
+      "master": "8f9a6f8dd3fe4ff7becd926698145883",
+      "path": "source/6f93583d22c1453eabc7566d8c1665b3.json",
+      "size": 580272,
+      "sha256": "4f7ccf7ae0ffd364c4695e4104aae35f9d93f562a236d01ac2f913fcde468350"
+    },
+    {
+      "doc_uuid": "6a003873c26649f4bfde9abcba215bd0",
+      "docType": 3,
+      "master": "ca0e857985264ccd9cab8a62f18b022c",
+      "path": "source/6a003873c26649f4bfde9abcba215bd0.json",
+      "size": 1207905,
+      "sha256": "4f68cb0cceb1e9ace05473530260cd87e8603f39fef02ff8b9f2f9b0895d7d59"
+    },
+    {
+      "doc_uuid": "15a2570f61164fb58b49b71bc8c107ad",
+      "docType": 3,
+      "master": "07e1e6a28d304169a09e3f063ba63b6f",
+      "path": "source/15a2570f61164fb58b49b71bc8c107ad.json",
+      "size": 599494,
+      "sha256": "61e9086b85dddeff42a67cccdb81be1e341610ca00d717155aa1b80ea0fe4bd7"
+    },
+    {
+      "doc_uuid": "c71ef753b18b44df9f6197b7812af583",
+      "docType": 3,
+      "master": "56a506edd2b346afbed3e3c329b7a61d",
+      "path": "source/c71ef753b18b44df9f6197b7812af583.json",
+      "size": 599489,
+      "sha256": "088be4a9ab923c20db11268a1caeb8328e8fa7344971848d9d2711bb03382e96"
+    }
+  ],
+  "editor_version": "6.5.47"
 }