Make Claude Code the primary interface — no API key needed

Add .claude/commands/ slash commands (/wiki-ingest, /wiki-query,
/wiki-lint, /wiki-graph) so the wiki works directly inside Claude Code
without any Python or API key. CLAUDE.md updated to lead with Claude
Code usage. Python tools remain as optional standalone scripts.

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

.claude/commands/wiki-graph.md

@@ -0,0 +1,18 @@
+Build the LLM Wiki knowledge graph.
+
+Usage: /wiki-graph
+
+First try running: python tools/build_graph.py --open
+
+If that fails (missing dependencies), build the graph manually:
+
+1. Use Grep to find all [[wikilinks]] across every file in wiki/
+2. Build a nodes list: one node per wiki page, with id=relative-path, label=title, type from frontmatter
+3. Build an edges list: one edge per [[wikilink]], tagged EXTRACTED
+4. Infer additional implicit relationships between pages not captured by wikilinks — tag these INFERRED with a confidence score (0.0–1.0); tag low-confidence ones AMBIGUOUS
+5. Write graph/graph.json with {nodes, edges, built: today}
+6. Write graph/graph.html as a self-contained vis.js page (nodes colored by type, edges colored by type, interactive, searchable)
+
+After building, summarize: node count, edge count, breakdown by type, and the most connected nodes (hubs).
+
+Append to wiki/log.md: ## [today's date] graph | Knowledge graph rebuilt