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/44b3175b9aae45acb274d626c1c44d0c/_urls.json

@@ -0,0 +1,11 @@
+{
+  "detail_url": "https://oshwhub.com/onlylgb/loli-zui-xiao-ban",
+  "cover_url": "https://image.lceda.cn/pullimage/UEJ3vHscxfHsr8MBTSY1VfYWFs69FhL7ErLqHT3C.jpeg",
+  "attachments": [
+    {
+      "name": "BOM_PCB_LOLI最小板_2022-10-15.csv",
+      "url": "https://image.lceda.cn/attachments/2022/10/4aguxcck1VHC8XQOzizx7VZyNtskDcPRDCnDkO1G.txt",
+      "original_id": "c83e63bb9c5b4a4abcb86053fc5e6fc4"
+    }
+  ]
+}