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/7c227fd50bcd410fbfec06823bc17bd7/_urls.json

@@ -0,0 +1,31 @@
+{
+  "detail_url": "https://oshwhub.com/humphreylin/gps-mu-kuai-30-kong",
+  "cover_url": "https://image.lceda.cn/pullimage/kFlz6eAn43CJ58UF20CLBEE5pHXowmSy9Etl8xBL.jpeg",
+  "attachments": [
+    {
+      "name": "u-bloxM8_ReceiverDescriptionProtocolSpec_(UBX-13003221)_Public.pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/rC4uDX1JDhs7HXcz2XqfMVNHKU1z57UOiZ0yoZaL.pdf",
+      "original_id": "78cc1008942c4041906630abe483551f"
+    },
+    {
+      "name": "UBX-M8030_DataSheet_(UBX-13001634)_CONFIDENTIAL.pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/k8BzUBxvNzT6Z3z5PRyH38vPZaySxQze1jo03iA5.pdf",
+      "original_id": "0880a00f0af945c6ad51ffd9ba5976af"
+    },
+    {
+      "name": "UBX-M8030_HardwareIntegrationManual_(UBX-13001708)_Confidential.pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/DYXvA8O8ExGE5NqY7cVACNKRlDxh862sNfOENjuI.pdf",
+      "original_id": "afbcabca18554ba59e85c8aba7d11032"
+    },
+    {
+      "name": "UBX-M8030_ProductSummary_(UBX-13002862).pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/xrOzqjlLczNZ5KnCpRc2NeX0pMPRJjKazmYTWhPo.pdf",
+      "original_id": "b0623a55cc02414ab989ed03712360e8"
+    },
+    {
+      "name": "u-center-v22.02_0.zip",
+      "url": "https://image.lceda.cn/attachments/2023/4/xt65jrNeqM9mvbzx72LVW8UcU7v2pLWTz1TiJP69.zip",
+      "original_id": "940f4220b0f24b7eb9cf7350830d80b7"
+    }
+  ]
+}