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/4b1becb00f4d4c65832451d2e7f49d5f/metadata.json

@@ -0,0 +1,61 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/cai20070410/at32-20-kong-aio-fei-kong-ban_copy",
+  "project_id": "4b1becb00f4d4c65832451d2e7f49d5f",
+  "title": "（新）AT32AIO 20孔飞控板V2",
+  "description_short": "简介：采用了AT32F435国产单片机的AIO飞控板，支持ATBF BF和INAV，低成本，配套电调板请看作者主页",
+  "description_path": "description.md",
+  "author": {
+    "username": "cai20070410",
+    "display_name": "cai",
+    "user_id": "10dba363579a460eb91f9b26b4516fc2"
+  },
+  "license": "CC BY-NC-SA 4.0",
+  "tags": [],
+  "created_at": "2025-08-13T07:32:04.000Z",
+  "updated_at": "2026-02-05T12:08:47.000Z",
+  "published_at": "2025-12-29T06:11:22.000Z",
+  "crawled_at": "2026-04-30T10:49:16.823617+00:00",
+  "metrics": {
+    "likes": 6,
+    "stars": 11,
+    "forks": 16,
+    "views": 796,
+    "watch": 0,
+    "comments": 0
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/oshwhub/pullImage/3505ee411b404c17ba0f8d51aef7e928.jpg",
+    "path": null
+  },
+  "files": [],
+  "raw_fields": {
+    "path": "cai20070410/at32-20-kong-aio-fei-kong-ban_copy",
+    "grade": 1,
+    "origin": "std",
+    "public": true,
+    "publish": true,
+    "skipped_files": []
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "66bcff8cf1b243499b3fd4ae35cf0080",
+      "docType": 1,
+      "master": "3059d01ef8094d0688545eafe0094aeb",
+      "path": "source/66bcff8cf1b243499b3fd4ae35cf0080.json",
+      "size": 151472,
+      "sha256": "07955b9754ae42c3e261ab8e8bd1d6a385c386d7709df3f6ff311f12c26fcc7f"
+    },
+    {
+      "doc_uuid": "8c7cc30855da4e8286536dc6843e3483",
+      "docType": 3,
+      "master": "538d3bc644bd46f9bd8f2d987df6fc69",
+      "path": "source/8c7cc30855da4e8286536dc6843e3483.json",
+      "size": 814268,
+      "sha256": "33057ed014ec4abc358ee46164775c9d77334ff447fb14f5f25bbef6f8f969ea"
+    }
+  ],
+  "editor_version": "6.5.51"
+}