Fix wiki-links to use filename-based resolution (#90)

## Summary
- Quartz's "shortest" path mode resolves wiki-links by **filename**, not frontmatter title
- Previous PR used title-based links like `[[Grafana Alloy]]` which looked for non-existent `Grafana-Alloy.md`
- Now using filename-based links like `[[alloy|Grafana Alloy]]` which correctly resolve

## Changes
- Rename zk duplicate files with `-log` suffix (e.g., `argocd.md` → `argocd-log.md`)
- Rename `reference/storage/postgresql.md` to `postgresql-storage.md`
- Convert all 175 wiki-links from `[[Title]]` to `[[filename|Title]]` format
- Rename `doc-card-titles` task to `doc-filenames` (checks filename uniqueness, not titles)
- Update pre-commit hook for renamed task

## Deployment and Testing
- [x] Pre-commit hooks pass
- [x] `mise run doc-filenames` shows no duplicate filenames
- [ ] Verify wiki-links work correctly in Quartz build

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

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/90

.pre-commit-config.yaml

@@ -89,12 +89,12 @@ repos:
         args: ['-config-file', '.github/actionlint.yaml']
         files: ^\.forgejo/workflows/
 
-  # Documentation - check for duplicate card titles
+  # Documentation - check for duplicate filenames (required for Quartz shortest path resolution)
   - repo: local
     hooks:
-      - id: doc-card-titles
-        name: doc-card-titles
-        entry: mise run doc-card-titles
+      - id: doc-filenames
+        name: doc-filenames
+        entry: mise run doc-filenames
         language: system
         files: ^docs/.*\.md$
         pass_filenames: false