setup: complete wiki scaffold with schema, seed files, sample article, search script, and workflow docs

wiki/index.md

@@ -6,10 +6,11 @@
 <!-- pages about people, organizations, tools -->
 
 ## Concepts
-<!-- pages about ideas, techniques, theories -->
+- [[llm-wiki-pattern]] — LLM Wiki methodology by Karpathy
 
 ## Sources
 <!-- pages summarizing original documents, papers, articles -->
+- [[sample-llm-wiki-intro]] — Introduction to LLM Wiki concept
 
 ## Comparisons
 <!-- pages comparing tools, approaches, or ideas -->