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/ebcaa9ec6f0044548d8b85adb58876b3/metadata.json

@@ -0,0 +1,89 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/nevet/fly_main_board",
+  "project_id": "ebcaa9ec6f0044548d8b85adb58876b3",
+  "title": "小四轴飞控（简化版）",
+  "description_short": "记录一个小四轴飞行器制作。",
+  "description_path": "description.md",
+  "author": {
+    "username": "nevet",
+    "display_name": "Nevet",
+    "user_id": "8dfefb68e785475a83dc7ad3011cd8cf"
+  },
+  "license": "GPL 3.0",
+  "tags": [],
+  "created_at": "2022-04-25T05:19:11.000Z",
+  "updated_at": "2025-09-21T07:48:00.000Z",
+  "published_at": "2022-07-15T02:50:27.000Z",
+  "crawled_at": "2026-04-30T10:49:12.140382+00:00",
+  "metrics": {
+    "likes": 34,
+    "stars": 97,
+    "forks": 29,
+    "views": 16088,
+    "watch": 0,
+    "comments": 7
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/avatars/2022/7/zJXQsgPJ1Q6vB56QuJ2SYBWlTMQwTnlTWdYLYBkw.png",
+    "path": null
+  },
+  "files": [
+    {
+      "name": "小四轴源码.rar",
+      "url": "https://image.lceda.cn/attachments/2022/7/yiByRFuPxVT0XNIBw5cFDaBf3HjKH0C5tljiKL7v.rar",
+      "original_id": "1a87b258d9bc472fb5f660906dedff6d",
+      "ext": "rar",
+      "mime": "application/octet-stream",
+      "size": 6602753,
+      "md5": "dc1ee7464d4d19b953e81732338f3647"
+    },
+    {
+      "name": "试飞记录.mp4",
+      "url": "https://image.lceda.cn/attachments/2022/7/iLDsZMqyvDnA3vHyLcWxpqhYFqNd0xKvv7MyS5w6.mp4",
+      "original_id": "64acd31062b6465eb5bb4d75d0ea0ac0",
+      "ext": "mp4",
+      "mime": "video/mp4",
+      "size": 40392695,
+      "md5": "66de45e90c873e0c4f2f9e9833019465"
+    },
+    {
+      "name": "遥控.mp4",
+      "url": "https://image.lceda.cn/attachments/2022/7/5U3UIaoQBXIKPxrKR8lm7BjQTi5RRh2HreP4ybqK.mp4",
+      "original_id": "f67d5be3c2c14a328faa466c030119fb",
+      "ext": "mp4",
+      "mime": "video/mp4",
+      "size": 1221361,
+      "md5": "e3171a354bd52aba3529ddc074055680"
+    }
+  ],
+  "raw_fields": {
+    "path": "nevet/fly_main_board",
+    "grade": 3,
+    "origin": "std",
+    "public": true,
+    "publish": true,
+    "skipped_files": []
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": [
+    {
+      "doc_uuid": "e163a09df1094c33b98307bd634b1487",
+      "docType": 1,
+      "master": "655a8c1fcb324d20881db8b59608a3e3",
+      "path": "source/e163a09df1094c33b98307bd634b1487.json",
+      "size": 445939,
+      "sha256": "65180836ddcfb80e27fc29d4c8b25c5d6649a58c820bb70e1a4f562c946a2586"
+    },
+    {
+      "doc_uuid": "81db4e4da2fd4ed09785ce256d056a0b",
+      "docType": 3,
+      "master": "35810badc1b24f42a5d450c7dc2deb4d",
+      "path": "source/81db4e4da2fd4ed09785ce256d056a0b.json",
+      "size": 699878,
+      "sha256": "2b53d6592b15d81e2e2f3ca45c07b25fa6af4a4907bb5cb6f782a316255a17bf"
+    }
+  ],
+  "editor_version": "6.5.8"
+}