feat: add wiki knowledge layer (Phase 0 + Phase 1 seed)

Implements LLM-compiled wiki layer between raw session logs and live
CONTEXT.md, inspired by Karpathy's knowledge base workflow. Adds wiki/
directory structure, article templates, spec docs, and seeds first two
articles (Cascades of Tucson, GuruRMM) from 60+ session logs.

Updates CLAUDE.md to check wiki first on all context-loading triggers.
Captures verified ACG IP/hostname map and Neptune physical-location
clarification (Dataforth D2, subnet overlap TODO) in memory.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

wiki/_templates/project.md

@@ -0,0 +1,50 @@
+---
+type: project
+name: <slug>
+display_name: <Human Readable Name>
+last_compiled: YYYY-MM-DD
+compiled_by: <session_id>
+sources: []
+backlinks: []
+---
+
+# <Project Display Name>
+
+## Summary
+
+*(What it is, current maturity, who uses it, what problem it solves)*
+
+## Architecture
+
+### Components
+| Component | Location | Tech | State |
+|---|---|---|---|
+
+### Key Files & Repos
+- **Repo:** gitea link
+- **Config:** path
+- **Logs:** path
+- **API:** URL
+
+## Development
+
+### Current Focus
+*(Active dev areas, recent decisions, in-flight work)*
+
+### Patterns & Anti-Patterns
+*(Code patterns enforced, anti-patterns discovered, reasons — reference memory entries where applicable)*
+
+### Build & Deploy
+*(How to build, how to deploy, what to watch for, rollback procedure)*
+
+## Active State
+
+*(Brief current state — link to CONTEXT.md for live detail; do not duplicate live state here)*
+
+## History Highlights
+
+*(Major milestones, pivots, incident resolutions — one-liners with dates)*
+
+## Backlinks
+
+*(Other wiki articles related to this project)*