Add markdown wiki with 473 pages and zk browser

Generate interlinked wiki from master inventory: 397 tool pages,
15 workflow pages, 27 recipe pages, 33 category pages, plus index.
All pages use [[wiki-links]] for cross-navigation between tools,
workflows, recipes, and categories (1782 links total).

Install zk for interactive browsing with fzf search, tag filtering,
and backlink discovery. Add 'fhelp wiki' command and Makefile target.

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

data/generated/wiki/tools/msg-extractor.md

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+# msg-extractor
+> Extract emails and attachments from Microsoft Outlook MSG files
+
+**Category:** [[categories/analyze-documents-email-messages|Analyze Documents > Email Messages]] | **Tier:** Rich (FOR610)
+**Docs:** [https://docs.remnux.org/discover-the-tools/analyze+documents/email+messages](https://docs.remnux.org/discover-the-tools/analyze+documents/email+messages)
+
+## Usage
+```bash
+extract_msg <email.msg>
+extract_msg --out-dir output/ <email.msg>
+```
+
+## Workflows
+- [[workflows/email-analysis-workflow|Email & Phishing Analysis]] — Step 2: Attachment Extraction
+
+## Related Tools
+- [[tools/emldump|emldump.py]] — Parse and analyze EML email message files
+- [[tools/mail-parser|mail-parser]] — Parse raw SMTP email messages and extract headers, body, and
+- [[tools/msgconvert|msgconvert]] — Convert MSG files to MBOX files.
+
+#email #msg #outlook #attachments