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>

03-opensource/alternatives/freshrss.md

@@ -1,3 +1,12 @@
+---
+title: "FreshRSS — Self-Hosted RSS Reader"
+domain: opensource
+category: alternatives
+tags: [freshrss, rss, self-hosting, docker, privacy]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # FreshRSS — Self-Hosted RSS Reader
 
 ## Problem

03-opensource/alternatives/gitea.md

@@ -1,3 +1,12 @@
+---
+title: "Gitea — Self-Hosted Git"
+domain: opensource
+category: alternatives
+tags: [gitea, git, self-hosting, docker, ci-cd]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # Gitea — Self-Hosted Git
 
 ## Problem

03-opensource/alternatives/searxng.md

@@ -1,3 +1,12 @@
+---
+title: "SearXNG — Private Self-Hosted Search"
+domain: opensource
+category: alternatives
+tags: [searxng, search, privacy, self-hosting, docker]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # SearXNG — Private Self-Hosted Search
 
 ## Problem

03-opensource/dev-tools/rsync.md

@@ -1,3 +1,12 @@
+---
+title: "rsync — Fast, Resumable File Transfers"
+domain: opensource
+category: dev-tools
+tags: [rsync, backup, file-transfer, linux, cli]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # rsync — Fast, Resumable File Transfers
 
 ## Problem

03-opensource/dev-tools/screen.md

@@ -1,3 +1,12 @@
+---
+title: "screen — Simple Persistent Terminal Sessions"
+domain: opensource
+category: dev-tools
+tags: [screen, terminal, ssh, linux, cli]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # screen — Simple Persistent Terminal Sessions
 
 ## Problem

03-opensource/dev-tools/tmux.md

@@ -1,3 +1,12 @@
+---
+title: "tmux — Persistent Terminal Sessions"
+domain: opensource
+category: dev-tools
+tags: [tmux, terminal, ssh, multiplexer, linux]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # tmux — Persistent Terminal Sessions
 
 ## Problem

03-opensource/dev-tools/ventoy.md

@@ -78,4 +78,4 @@ sudo ./Ventoy2Disk.sh -u /dev/sdX
 
 ## See Also
 
-- [[linux-distro-guide-beginners]]
+- [linux-distro-guide-beginners](../../01-linux/distro-specific/linux-distro-guide-beginners.md)

03-opensource/media-creative/yt-dlp.md

@@ -1,3 +1,12 @@
+---
+title: "yt-dlp — Video Downloading"
+domain: opensource
+category: media-creative
+tags: [yt-dlp, video, youtube, downloads, cli]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # yt-dlp — Video Downloading
 
 ## What It Is

03-opensource/privacy-security/vaultwarden.md

@@ -1,3 +1,12 @@
+---
+title: "Vaultwarden — Self-Hosted Password Manager"
+domain: opensource
+category: privacy-security
+tags: [vaultwarden, bitwarden, passwords, self-hosting, docker]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # Vaultwarden — Self-Hosted Password Manager
 
 ## Problem

03-opensource/productivity/rmlint-duplicate-scanning.md

@@ -1,3 +1,12 @@
+---
+title: "rmlint — Extreme Duplicate File Scanning"
+domain: opensource
+category: productivity
+tags: [rmlint, duplicates, storage, cleanup, linux]
+status: published
+created: 2026-04-02
+updated: 2026-04-02
+---
 # rmlint — Extreme Duplicate File Scanning
 
 ## Problem