Switch to title-based wiki-links (#91)

## Summary
- Remove aliases from all zk cards to prevent them from capturing wiki-links
- Convert all wiki-links from `[[filename|Title]]` to `[[Title]]` format
- Replace `doc-filenames` task with `doc-titles` for duplicate title detection
- Update pre-commit hook to use `doc-titles`

Wiki-links now resolve to reference docs by their frontmatter title, which is more readable and maintainable than filename-based links.

## Deployment and Testing
- [x] Pre-commit hooks pass (including new `doc-titles` check)
- [x] Manually verified zk cards have aliases removed
- [ ] Deploy docs v1.0.7 and verify wiki-links resolve correctly
- [ ] Test links to reference docs (e.g., [[Grafana Alloy]], [[ArgoCD]])

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/91

docs/reference/services/forgejo.md

@@ -44,5 +44,5 @@ Managed via 1Password: `lfs-jwt-secret`, `internal-token`, `oauth2-jwt-secret`,
 
 ## Related
 
-- [[argocd|ArgoCD]] - Uses Forgejo as git source
-- [[zot|Zot]] - Container registry for built images
+- [[ArgoCD]] - Uses Forgejo as git source
+- [[Zot]] - Container registry for built images