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/2246f96d10b04e94bf3170bb4837d647/metadata.json

@@ -100,5 +100,24 @@
     "public": true,
     "publish": true,
     "skipped_files": []
-  }
+  },
+  "source_format": "easyeda-pro-legacy",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "2076f1e07f2a44aea88de1b764b894b7",
+      "docType": 1,
+      "path": "source/2076f1e07f2a44aea88de1b764b894b7.json",
+      "size": 44144,
+      "sha256": "653dedb18a6a2a92c5fab212032bbf88ab9f4635136dec7a1051747ff98b966c"
+    },
+    {
+      "doc_uuid": "e8c1b58348bc4ec394108f6791b8b075",
+      "docType": 3,
+      "path": "source/pcb_e8c1b58348bc4ec394108f6791b8b075.json",
+      "size": 71188,
+      "sha256": "2e1bd4614881eadca2b7127cdf438892cdc542467eebf6fb768caaee6d1189e2"
+    }
+  ],
+  "editor_version": "2.1.22.c2e45758.d51db2"
 }

data/raw/oshwhub/2246f96d10b04e94bf3170bb4837d647/source/coppers.json

@@ -0,0 +1 @@
+[]

data/raw/oshwhub/2246f96d10b04e94bf3170bb4837d647/source/manifest.json

@@ -0,0 +1,45 @@
+{
+  "project_uuid": "2246f96d10b04e94bf3170bb4837d647",
+  "fetched_at": "2026-04-28T17:54:03.278134+00:00",
+  "editor_version": "2.1.22.c2e45758.d51db2",
+  "boards": [
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+      "sch": "028033db7d404d549db7c621dc2d6f1a",
+      "name": "Board1",
+      "pcb": "e8c1b58348bc4ec394108f6791b8b075"
+    }
+  ],
+  "documents": [
+    {
+      "doc_uuid": "2076f1e07f2a44aea88de1b764b894b7",
+      "docType": 1,
+      "path": "source/2076f1e07f2a44aea88de1b764b894b7.json",
+      "size": 44144,
+      "sha256": "653dedb18a6a2a92c5fab212032bbf88ab9f4635136dec7a1051747ff98b966c"
+    },
+    {
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+      "docType": 3,
+      "path": "source/pcb_e8c1b58348bc4ec394108f6791b8b075.json",
+      "size": 71188,
+      "sha256": "2e1bd4614881eadca2b7127cdf438892cdc542467eebf6fb768caaee6d1189e2"
+    }
+  ],
+  "structure_summary": {
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+    "schematic_containers": 1,
+    "schematic_sheets": 1,
+    "pcbs": 1,
+    "symbols": 24,
+    "footprints": 50,
+    "devices": 22,
+    "coppers": 4,
+    "textpath": 3,
+    "blobs": 19
+  },
+  "aux": {
+    "coppers_count": 0,
+    "textpath_count": 3,
+    "blobs_count": 19
+  }
+}

data/raw/oshwhub/2246f96d10b04e94bf3170bb4837d647/source/ticket.json

@@ -0,0 +1,151 @@
+{
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+}