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/tcpdump.md

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+# tcpdump
+> Command-line packet capture tool
+
+**Category:** [[categories/explore-network-interactions-monitoring|Explore Network Interactions > Monitoring]] | **Tier:** Rich (FOR610)
+**Docs:** [https://docs.remnux.org/discover-the-tools/explore+network+interactions/monitoring](https://docs.remnux.org/discover-the-tools/explore+network+interactions/monitoring)
+
+## Usage
+```bash
+tcpdump -i eth0 -w capture.pcap
+tcpdump -r capture.pcap
+```
+
+## Workflows
+- [[workflows/behavioral-analysis-workflow|Behavioral Analysis]] — Step 3: Monitoring Setup
+- [[workflows/network-interception-workflow|Network Traffic Interception]] — Step 4: Packet Capture
+
+## Related Tools
+- [[tools/burp-suite-community-edition|Burp Suite Community Edition]] — Investigate website interactions using this web proxy.
+- [[tools/cs-parse-traffic|cs-parse-traffic.py]] — Decrypt and parse Cobalt Strike beacon network traffic using
+- [[tools/mitmproxy|mitmproxy]] — Interactive HTTPS proxy for intercepting, inspecting, and mo
+- [[tools/network-miner-free-edition|Network Miner Free Edition]] — Examine network traffic and carve PCAP capture files.
+- [[tools/ngrep|ngrep]] — Search network traffic for patterns — like grep for packets
+
+## FOR610
+**Sections:** 1
+
+#packet-capture #cli #network