fix: improve lychee link checker to catch dead links returning 403 (#2261)

- Remove blanket HTTP 403 acceptance from lychee config, which was
masking genuinely dead links (e.g.,
make.com/en/integrations/apify-instagram-scraper).
- Add `--max-redirects 5` to properly follow redirects instead of
reporting 302 as errors.
- Add bot-blocking domains (soundcloud.com, fandom.com, remax.com.tr) to
.lycheeignore to avoid false positives from sites that return 403 to
non-browser clients.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: TC-MO

.github/workflows/lychee.yml

@@ -46,6 +46,7 @@ jobs:
                         --verbose
                         --no-progress
                         --timeout '60'
-                        --accept '100..=103,200..=299,403..=403,429'
+                        --accept '100..=103,200..=299,429'
+                        --max-redirects 5
                         --format markdown
                         './build/**/*.html'

.lycheeignore

@@ -13,3 +13,7 @@ https://console-backend.apify.com/
 https://mcp.apify.com/
 https://www.deviceinfo.me/
 https://trust.apify.com/
+# Bot-blocked sites (return 403 to non-browser clients)
+https?:\/\/(www\.)?soundcloud\.com\/.*
+https?:\/\/(www\.)?fandom\.com\/.*
+https?:\/\/(www\.)?remax\.com\.tr\/.*