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/12df52a6905f47cba2585d0c5145ab93/metadata.json

@@ -0,0 +1,117 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/hljjmsr/flyingrc-f405-sleek-v1-0",
+  "project_id": "12df52a6905f47cba2585d0c5145ab93",
+  "title": "FlyingRC-F405-SLEEK-V1.0",
+  "description_short": "FlyingRC-F405-Sleek V1.0 穿越机-固定翼 高性能飞控",
+  "description_path": "description.md",
+  "author": {
+    "username": "hljjmsr",
+    "display_name": "hljjmsr",
+    "user_id": "6b757f14148844228f06baed886e5663"
+  },
+  "license": "GPL 3.0",
+  "tags": [],
+  "created_at": "2022-06-14T12:45:59.000Z",
+  "updated_at": "2024-09-02T02:52:38.000Z",
+  "published_at": "2022-11-25T00:57:26.000Z",
+  "crawled_at": "2026-04-30T10:49:10.973952+00:00",
+  "metrics": {
+    "likes": 16,
+    "stars": 37,
+    "forks": 43,
+    "views": 7966,
+    "watch": 0,
+    "comments": 3
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/pullimage/QLrCLqltuzxbDmymXd65ccTyPSbRseh4VfQO0SsD.jpeg",
+    "path": null
+  },
+  "files": [],
+  "raw_fields": {
+    "path": "hljjmsr/flyingrc-f405-sleek-v1-0",
+    "grade": 3,
+    "origin": "std",
+    "public": true,
+    "publish": true,
+    "skipped_files": []
+  },
+  "source_format": "easyeda-std",
+  "source_path": "source/",
+  "source_documents": [
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+      "docType": 1,
+      "master": "3a6c30ddee2443e49520fc19e3cf54b3",
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+}