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/bd3d092f63dd4b6f88eba099ef0e3c81/metadata.json

@@ -0,0 +1,61 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/pdwdw/at32f437",
+  "project_id": "bd3d092f63dd4b6f88eba099ef0e3c81",
+  "title": "AT32F437飞控",
+  "description_short": "基于AT32F435/7 国产芯片飞控，固件 ：betaflight 4.3",
+  "description_path": "description.md",
+  "author": {
+    "username": "pdwdw",
+    "display_name": "辉光管",
+    "user_id": "9187e940c7ea48499e31f8ce934d98a0"
+  },
+  "license": "GPL 3.0",
+  "tags": [],
+  "created_at": "2022-09-03T12:58:35.000Z",
+  "updated_at": "2025-12-19T00:41:40.000Z",
+  "published_at": "2024-02-02T01:58:40.000Z",
+  "crawled_at": "2026-04-30T10:49:08.362788+00:00",
+  "metrics": {
+    "likes": 180,
+    "stars": 401,
+    "forks": 273,
+    "views": 53725,
+    "watch": 0,
+    "comments": 49
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/pullimage/ny11Tsy7sdEiMo5B5oZ85LKWkNgrh5rkrrDcTykB.jpeg",
+    "path": null
+  },
+  "files": [],
+  "raw_fields": {
+    "path": "pdwdw/at32f437",
+    "grade": 3,
+    "origin": "std",
+    "public": true,
+    "publish": true,
+    "skipped_files": []
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "97fe30f387734738a702af14a39dd81b",
+      "docType": 1,
+      "master": "2f23a9e516824dc2a21a277b71ce8c9e",
+      "path": "source/97fe30f387734738a702af14a39dd81b.json",
+      "size": 299469,
+      "sha256": "db7f836c9495e2309fa05dc151af9fe51606994f6df9e6698e57cad35dab9043"
+    },
+    {
+      "doc_uuid": "828e7bed3b6b46b4aa05243b18876c07",
+      "docType": 3,
+      "master": "d6f7c181ca1b42aeaed3c42c22a8a1e1",
+      "path": "source/828e7bed3b6b46b4aa05243b18876c07.json",
+      "size": 1147256,
+      "sha256": "0a5194d67b7e4f543de77a134b0a042fab6b33a3d6c9805cc19027db956c15b7"
+    }
+  ],
+  "editor_version": "6.5.34"
+}