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/b8ade899f37149e1b562c8f38369fb5a/description.md

@@ -0,0 +1,9 @@
+# 空心杯四轴穿越机
+
+基于NAZE32飞控固件的空心杯飞控/机架，使用BF或者CF软件进行调参，需要外置接收机以及航模遥控器。适合用来四轴入门。主控为STM32F103C8T6，陀螺仪MPU6050,气压计BMP280
+
+---
+- Source: https://oshwhub.com/death/naze32-kong-xin-bei-si-zhou
+- Author: SaekiSayaka (death)
+- License: Public Domain
+- Published: 2023-04-11T12:29:02.000Z