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/24adb01d49b04090b3a7e2ad549f3db0/_urls.json

@@ -0,0 +1,16 @@
+{
+  "detail_url": "https://oshwhub.com/zl4430/matek-f411-gu-ding-yi-fei-kong",
+  "cover_url": "https://image.lceda.cn/pullimage/DksY8zw0fQmfcz8GtjT1TkGZ5dEiQQEZ81dUFI2J.jpeg",
+  "attachments": [
+    {
+      "name": "左手边 MATEK F411 WING 4层板优化布局.zip",
+      "url": "https://image.lceda.cn/attachments/2022/5/zFoFD5a1UfcPI2qKhL1blUpAeS6ipQGKOafh9Fev.zip",
+      "original_id": "ca39bcf39669443cbc9798ba7e073193"
+    },
+    {
+      "name": "MatekF411 inav bf固件+配置文件.zip",
+      "url": "https://image.lceda.cn/attachments/2023/5/5UIPMgEdDI7fFY7Y7h6hNUF5hvkOgJ0YAqsihJjF.zip",
+      "original_id": "f0b023a56d204d16a8715a09de9631c3"
+    }
+  ]
+}