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/511e178ad2e04bc7a70b588429530901/_urls.json

@@ -0,0 +1,21 @@
+{
+  "detail_url": "https://oshwhub.com/yang_xw0011/STM32H743fei-kong",
+  "cover_url": "https://image.lceda.cn/pullimage/WgyZ8pGOBw2RDnqVuNlDraIYr03T8bDrbQEFuWML.jpeg",
+  "attachments": [
+    {
+      "name": "LCKY_H743mini_v1.zip",
+      "url": "https://image.lceda.cn/attachments/2022/11/zPB2UsYzFqx8j2da9Mi6SsBhjHwjKpvJmUAa6IVl.zip",
+      "original_id": "4c048710cb2040ba9646aa2d4b68c27f"
+    },
+    {
+      "name": "VID_20221115_222419[1].mp4",
+      "url": "https://image.lceda.cn/attachments/2022/11/e9pw9vytmVnVU3chEZitDjwJXFeybR7HOKkakv9q.mp4",
+      "original_id": "e4db65a5cc974eac960dc24928cb4fda"
+    },
+    {
+      "name": "测试.mp4",
+      "url": "https://image.lceda.cn/attachments/2022/11/KWSjPOqRgYVHAIkpfXZjWiuvFiiDV9yvmZzoor3E.mp4",
+      "original_id": "53d5e7ba0f964f72b4602d19cc37f699"
+    }
+  ]
+}