飞控-77: 74 std flight-controller projects ingested

Topic-pull from local listing index (`name OR introduction` contains
飞控). 77 std hits in oshwhub_listing_full.jsonl, minus 2 already
crawled = 75 attempted; 74 OK + 1 hard fail (`m1_mh743_ada_v4`,
listing entry missing `count.like`).

dev1 walltime: Step 1 ~12s, Step 4 ~80s (concurrency=5).
License mix: 65% GPL 3.0, 11% Public Domain, 11% MIT, 4% CC variants.

3 partial dirs (Step 1 KeyError on missing `count.like`) dropped — to
be re-fetched after a follow-up crawler patch makes count fields
defensive against listing-index outliers.

Source backfill 74/74 OK, total +46 MB.

data/raw/oshwhub/03983a6a52df4d9d8115a4a0fe8ca830/source/manifest.json

@@ -0,0 +1,71 @@
+{
+  "project_uuid": "03983a6a52df4d9d8115a4a0fe8ca830",
+  "fetched_at": "2026-04-30T10:50:05.938506+00:00",
+  "editor_version": "6.5.23",
+  "documents": [
+    {
+      "doc_uuid": "d4590445415e4388895d3d2d0b978d91",
+      "docType": 1,
+      "master": "d156b54776c447ee8fcd7d49729edef7",
+      "path": "source/d4590445415e4388895d3d2d0b978d91.json",
+      "size": 40083,
+      "sha256": "d1ab6ecbd69f0f3e0ad84074e4f1797453372958362fc1eeaa43ad444c40f4fd"
+    },
+    {
+      "doc_uuid": "3fbc835355474c6aa51630dbc2a5b291",
+      "docType": 3,
+      "master": "1a8680a2eaa14e248fac3036d89f1b9a",
+      "path": "source/3fbc835355474c6aa51630dbc2a5b291.json",
+      "size": 137036,
+      "sha256": "102cae31622610ab53d7b1960fe79b225c65724fe2ef2e9ad432f66176709c17"
+    }
+  ],
+  "upstream_version_documents": [
+    {
+      "uuid": "d4590445415e4388895d3d2d0b978d91",
+      "title": "Sheet_1",
+      "description": "",
+      "docType": 1,
+      "master": "d156b54776c447ee8fcd7d49729edef7",
+      "thumb": "//image.lceda.cn/histories/d156b54776c447ee8fcd7d49729edef7.png",
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+      "createTime": 1676441620,
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+    {
+      "uuid": "3fbc835355474c6aa51630dbc2a5b291",
+      "title": "PCB_PCB_FlyingRC-F4Wing-MK2-usbBoard_2023-02-15",
+      "description": "",
+      "docType": 3,
+      "master": "1a8680a2eaa14e248fac3036d89f1b9a",
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+      "createTime": 1676441676,
+      "histories": [
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+}