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/78dd4bf7e1c94c1e82b34c5509874cc6/metadata.json

@@ -0,0 +1,98 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/yang_xw0011/P900shuo-zhuan-dian-tai",
+  "project_id": "78dd4bf7e1c94c1e82b34c5509874cc6",
+  "title": "P900数传电台",
+  "description_short": "P900数传电台，可作为无人机飞控的数传，支持pixhawk。附件包含两块板子，天空端和地面端，天空端5V供电，地面端7-28V供电。使用915Mhz天线。\n仅供学习参考使用。",
+  "description_path": "description.md",
+  "author": {
+    "username": "yang_xw0011",
+    "display_name": "自动挖掘机",
+    "user_id": "4453b68f289c4a75843896f600019616"
+  },
+  "license": "MIT",
+  "tags": [],
+  "created_at": "2022-10-12T02:11:24.000Z",
+  "updated_at": "2022-11-09T12:57:49.000Z",
+  "published_at": "2022-10-12T05:23:18.000Z",
+  "crawled_at": "2026-04-30T10:49:14.035030+00:00",
+  "metrics": {
+    "likes": 28,
+    "stars": 48,
+    "forks": 20,
+    "views": 7483,
+    "watch": 0,
+    "comments": 5
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/pullimage/RIRvNpZ36aiOgjPGF2GJrG7FH4hO9TnjP12jNg7E.jpeg",
+    "path": null
+  },
+  "files": [
+    {
+      "name": "P900_ds_cn_1.3.pdf",
+      "url": "https://image.lceda.cn/attachments/2022/10/nUrVscwm83CxQcvD5FeNvNE4hZyARBbU0hkYo2I3.pdf",
+      "original_id": "6bf75ec8049345ceb2ffb36b7939b3c3",
+      "ext": "pdf",
+      "mime": "application/pdf",
+      "size": 531893,
+      "md5": "54572bb3e70eb870ad20f5018d62a3bf"
+    },
+    {
+      "name": "P900_Manual.v1.8.7.pdf",
+      "url": "https://image.lceda.cn/attachments/2022/10/sDVjqcWOyIv5QWxalur67H2bLfuruc7K1mCTdrlY.pdf",
+      "original_id": "7ccc1eafce2a4e15a2abe63f0a935c14",
+      "ext": "pdf",
+      "mime": "application/pdf",
+      "size": 6553799,
+      "md5": "59daa76748b5f102eb8d1072187a73af"
+    },
+    {
+      "name": "D02超视距数传使用说明书V1.1.2.pdf",
+      "url": "https://image.lceda.cn/attachments/2022/10/nqzRGDAES8uZpuF3bmhiSeUlQOexUbnVN8asonLK.pdf",
+      "original_id": "2e3057efd41442139569904ccfc2ea8a",
+      "ext": "pdf",
+      "mime": "application/pdf",
+      "size": 1085403,
+      "md5": "1f16c422667a41c30fdc0ee13a74a4be"
+    },
+    {
+      "name": "天空端PCB文件.rar",
+      "url": "https://image.lceda.cn/attachments/2022/10/fVwXcz3DmAe93abSNDO9nxmlfVDaY3KMgtiOT0YC.rar",
+      "original_id": "ebe6f0a02f134e0ca09306b38136bd5b",
+      "ext": "rar",
+      "mime": "application/octet-stream",
+      "size": 1106134,
+      "md5": "dc77a3540692a1a418a2c3b6e623028b"
+    },
+    {
+      "name": "地面端PCB文件.rar",
+      "url": "https://image.lceda.cn/attachments/2022/10/ynFjIluU0bC5z8qkIFmn6sYArY2mDrGsoexq5879.rar",
+      "original_id": "73590960bb8e4c13a55c60247100b84a",
+      "ext": "rar",
+      "mime": "application/octet-stream",
+      "size": 3817905,
+      "md5": "1b63263f96b41e8ec83db1c9260054c7"
+    },
+    {
+      "name": "D02_1.0.0.exe",
+      "url": "https://image.lceda.cn/attachments/2022/10/9YMeABqw56cyR6XqTTeZqnKvLvZEFUVWIHcNUAVU",
+      "original_id": "1b96889731494d43a0280d55f0939df1",
+      "ext": null,
+      "mime": "application/x-msdownload",
+      "size": 51020902,
+      "md5": "ba243b2895af96a053c25302585aebd1"
+    }
+  ],
+  "raw_fields": {
+    "path": "yang_xw0011/P900shuo-zhuan-dian-tai",
+    "grade": 2,
+    "origin": "std",
+    "public": true,
+    "publish": true,
+    "skipped_files": []
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": []
+}