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>

.claude/specs/wiki-layer/references.md

@@ -0,0 +1,75 @@
+# Wiki Layer — References
+
+## Files This Feature Reads From
+
+| File / Path | Role |
+|---|---|
+| `session-logs/*.md` | Raw source — root general logs |
+| `projects/*/session-logs/*.md` | Raw source — project-specific logs |
+| `clients/*/session-logs/*.md` | Raw source — client logs |
+| `projects/*/CONTEXT.md` | Cross-reference for live state facts |
+| `.claude/memory/*.md` | Cross-reference for discrete facts |
+| `credentials.md` | Cross-reference for access details |
+
+## Files This Feature Writes To
+
+| File / Path | Role |
+|---|---|
+| `wiki/index.md` | LLM-maintained master index |
+| `wiki/clients/<slug>.md` | Per-client synthesized knowledge |
+| `wiki/projects/<slug>.md` | Per-project synthesized knowledge |
+| `wiki/systems/<slug>.md` | Per-system synthesized knowledge |
+| `wiki/patterns/<slug>.md` | Cross-cutting pattern articles |
+
+## Commands This Feature Touches
+
+| Command | Change |
+|---|---|
+| `.claude/commands/context.md` | Add wiki-first search step (Phase 3) |
+| `.claude/commands/save.md` | Add post-save wiki update prompt (Phase 5) |
+| `.claude/commands/wiki-compile.md` | New — created in Phase 2 |
+| `.claude/commands/wiki-lint.md` | New — created in Phase 4 |
+
+## Integration Points
+
+### GrepAI
+- `wiki/` is under the repo root — GrepAI watcher picks it up automatically
+- No config change needed
+- Wiki articles get full semantic search immediately after creation
+- CLI: `D:/claudetools/grepai.exe search "cascades billing rate" --json -c -n 5`
+
+### Ollama (Compilation Engine)
+- Model: `qwen3:8b` on DESKTOP-0O8A1RL (86 tok/s, fits in 12GB VRAM)
+- Model: `qwen3:14b` on other machines
+- Prompt style: structured-format, JSON frontmatter first, then article body
+- Endpoint: `http://localhost:11434` (DESKTOP-0O8A1RL) | `http://100.92.127.64:11434` (others)
+- See `.claude/OLLAMA.md` for full routing table
+
+### Git / Gitea Sync
+- `wiki/` is tracked in Git — syncs via `sync.sh` on every `/save` and `/sync`
+- Cross-machine sync is automatic: Mike compiles on DESKTOP, Howard gets it on next pull
+- No special handling needed
+
+### Coord API
+- Wiki does NOT replace coord API — they serve different purposes
+- Coord API: real-time state (locks, messages, component state)
+- Wiki: synthesized historical knowledge
+- `/wiki-compile` may read coord API component state for currency checks but does not write to it
+
+## Existing Relevant Docs
+
+| Doc | Why Relevant |
+|---|---|
+| `.claude/CLAUDE.md` | Auto-context-loading section needs updating to reference wiki |
+| `.claude/OLLAMA.md` | Compilation uses Ollama — routing table and examples |
+| `.claude/FILE_PLACEMENT_GUIDE.md` | `wiki/` placement is new — add section |
+| `.claude/memory/MEMORY.md` | Memory entries should link to wiki articles where applicable |
+| `CONTEXT.md` (root) | Add wiki to "Where to Find Things" section |
+
+## Karpathy Reference
+
+Original post: https://x.com/karpathy/status/2039805659525644595
+Posted: 2026-04-02
+Key insight adopted: raw data → LLM-compiled wiki → Q&A against wiki → outputs filed back into wiki
+Key insight NOT adopted: Obsidian IDE, RAG pipelines, finetuning (unnecessary at our scale)
+Key divergence: We already have GrepAI (replaces his naive search engine) and coord API (real-time comms he lacks)