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/5089e537f97d4be1a13252fb120f9962/_urls.json

@@ -0,0 +1,21 @@
+{
+  "detail_url": "https://oshwhub.com/ni-kan-wo-shuo-di-dui-fou-dui/2021-niang-ti-zhi-bao-fei-xing-qi",
+  "cover_url": "https://image.lceda.cn/pullimage/fRfJ5TwGlWNHfA1nDUrayqMHc7SfDAnCr0ubQjE8.jpeg",
+  "attachments": [
+    {
+      "name": "openmv识别A与圆代码.zip",
+      "url": "https://image.lceda.cn/attachments/2021/12/lCla6cm7pu7d8Wf3Kirzvbz7sUEgru7tOh3rN84W.zip",
+      "original_id": "41e20577067f49b682dccbac76bfe070"
+    },
+    {
+      "name": "备赛时的调试视频.txt",
+      "url": "https://image.lceda.cn/attachments/2021/12/FRU3JWIT14Gp2jmpQwCUenNckIptmKj3SWPIrUUv.txt",
+      "original_id": "5ed76ea25fc949fd837ff02e098ab7c9"
+    },
+    {
+      "name": "植保飞行器代码.zip",
+      "url": "https://image.lceda.cn/attachments/2022/1/Z7ZuJPd7MlX8G9uCy5gbHmlsssIIIlGBaZlsWKv2.zip",
+      "original_id": "1690fcae71824028ae1abeaba1d24f03"
+    }
+  ]
+}