docs: add public frontmatter to docs for soulcraft.com/docs pipeline

Add YAML frontmatter (slug, public, category, template, order) to 8
existing docs and 2 new getting-started guides (installation, quick-start).
Include docs/**/*.md in npm package files so the portal sync-docs script
can read them from node_modules after publish.

Update CLAUDE.md with docs pipeline trigger phrases and release checklist.

docs/FIND_SYSTEM.md

@@ -1,3 +1,16 @@
+---
+title: The Find System
+slug: guides/find-system
+public: true
+category: guides
+template: guide
+order: 3
+description: Complete guide to Brainy's find() method — four intelligence systems, query execution phases, NLP patterns, and performance from 1K to 10M entities.
+next:
+  - concepts/triple-intelligence
+  - api/reference
+---
+
 # Brainy's Find System - Complete Guide
 
 ## Overview