飞控-77: 77 std flight-controller projects ingested

Topic-targeted pull from local listing index (`name OR introduction`
contains 飞控). 79 std hits in oshwhub_listing_full.jsonl, 2 already
crawled, 77 newly fetched.

dev1 (Guangzhou) walltime:
  Step 1 detail scrape ~12s, Step 4 std-source backfill ~80s
  (concurrency=5)
Source completeness: 73/77 with editor source, 4 are upstream
attachments-only (no editor session ever attached, source_documents=[]
is genuine — no editor_version on the SSR page either).

Crawler hardening (crawlers/oshwhub/crawler.py):
- count.{like,star,fork,views} are now `.get(..., 0)` defensive.
  Listing API omits zero-valued fields for some low-activity entries
  (3/77 hit this on first pass, hard-failed with KeyError 'like').
  Affects rank_score, pick_top, and metadata.json metrics block.

License mix: 65% GPL 3.0, 11% Public Domain, 11% MIT, ~6% CC variants.

Transport: dev1 → SG via tar+scp (33 MB, ~3 min over lossy
cross-region link). Bypassed gitea push from dev1 because the same
6.5%-loss link tanks single-stream throughput.

data/raw/oshwhub/8ee22e5a5bf9430ab1b87d738eca794c/description.md

@@ -0,0 +1,9 @@
+# MATEK F405 WSE 飞控USB板部分
+
+用于MATEK F405 WSE滑翔机飞控的USB调参板，遵循FlyingRC的设计，也可用于MATEK使用6Pin接口的飞控。
+
+---
+- Source: https://oshwhub.com/airbus15/matek-f405-wse-fei-kong-usb-ban-bu-fen
+- Author: AIRBUS15 (airbus15)
+- License: GPL 3.0
+- Published: 2025-09-02T09:39:50.000Z