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/8394447d1bf7406daf1e58458bfd5262/_urls.json

@@ -0,0 +1,21 @@
+{
+  "detail_url": "https://oshwhub.com/dahjdksakdlshjkads/g-zhi-bao-fei-xing-qi",
+  "cover_url": "https://image.lceda.cn/pullimage/3wiuqTi29BTdzNVsr4g4seSOHTp5qSHTALtOtRip.jpeg",
+  "attachments": [
+    {
+      "name": "视觉程序.zip",
+      "url": "https://image.lceda.cn/attachments/2022/1/4mq3yPk9dKu9BlbbviBtSmpo1RcbC96m5v8Sk76t.bin",
+      "original_id": "6b09367a41e04b1dae4c7c575f35630b"
+    },
+    {
+      "name": "飞控软件.zip",
+      "url": "https://image.lceda.cn/attachments/2022/1/LWmoGlqmXaSyAT2tPMyYY3JZLAneeVh8D4STA0eh.bin",
+      "original_id": "477cfb9c73b143f4931bc5f522dba818"
+    },
+    {
+      "name": "报告.pdf",
+      "url": "https://image.lceda.cn/attachments/2022/1/Rq76jqcziw658i704sOX5Qnd7LqYC9d4PneekJyt.pdf",
+      "original_id": "d8eb6b7e1e0543cba27e11ce3b8101ab"
+    }
+  ]
+}