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/pattern.md

@@ -0,0 +1,31 @@
+---
+type: pattern
+name: <slug>
+display_name: <Pattern Name>
+last_compiled: YYYY-MM-DD
+compiled_by: <session_id>
+sources: []
+backlinks: []
+---
+
+# <Pattern Name>
+
+## Rule
+
+*(One-sentence statement of the pattern — the thing to always do or never do)*
+
+## Why
+
+*(Why this rule exists — the incident, constraint, or hard-learned lesson behind it)*
+
+## How to Apply
+
+*(When and where this applies. Edge cases. What "good" looks like vs. what to avoid)*
+
+## Examples
+
+*(Session log references where this played out — dates and brief context)*
+
+## Backlinks
+
+*(Projects, clients, or systems where this pattern is especially relevant)*