adr: record docs source decision

Author: OgeonX-Ai

adr/0001-docs-source.md

@@ -0,0 +1,19 @@
+# ADR-0001: Repository docs are the source
+
+## Status
+
+Accepted
+
+## Context
+
+AI-OS has repository docs and wiki pages. They need one source of truth.
+
+## Decision
+
+The repository `/docs` tree is the source of truth. Wiki pages are curated navigation pages.
+
+## Consequences
+
+- Changes are reviewed through pull requests.
+- Documentation is versioned with workflows and templates.
+- Wiki pages can stay concise.