wiki: audit fixes — broken links, wikilinks, frontmatter, stale content (66 files)

- Fixed 4 broken markdown links (bad relative paths in See Also sections)
- Corrected n8n port binding to 127.0.0.1:5678 (matches actual deployment)
- Updated SnapRAID article with actual majorhome paths (/majorRAID, disk1-3)
- Converted 67 Obsidian wikilinks to relative markdown links or plain text
- Added YAML frontmatter to 35 articles missing it entirely
- Completed frontmatter on 8 articles with missing fields

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

02-selfhosting/services/updating-n8n-docker.md

@@ -61,7 +61,7 @@ docker stop n8n-n8n-1 && docker rm n8n-n8n-1
 docker run -d \
   --name n8n-n8n-1 \
   --restart unless-stopped \
-  -p 5678:5678 \
+  -p 127.0.0.1:5678:5678 \
   -v n8n_n8n_data:/home/node/.n8n \
   -e N8N_EDITOR_BASE_URL=https://n8n.majorshouse.com/ \
   -e N8N_PORT=5678 \