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/guides/installation.md

@@ -0,0 +1,100 @@
+---
+title: Installation
+slug: getting-started/installation
+public: true
+category: getting-started
+template: guide
+order: 1
+description: Install Brainy with npm, bun, yarn, or pnpm. Works in Node.js 22+, Bun 1.0+, and browser (OPFS). TypeScript included.
+next:
+  - getting-started/quick-start
+  - concepts/zero-config
+---
+
+# Installation
+
+## Requirements
+
+- **Node.js 22+** or **Bun 1.0+**
+- TypeScript is optional — Brainy ships with full type definitions
+
+## Install
+
+```bash
+npm install @soulcraft/brainy
+```
+
+Or with your preferred package manager:
+
+```bash
+bun add @soulcraft/brainy
+yarn add @soulcraft/brainy
+pnpm add @soulcraft/brainy
+```
+
+## Verify
+
+```javascript
+import { Brainy } from '@soulcraft/brainy'
+
+const brain = new Brainy()
+await brain.init()
+
+console.log('Brainy ready.')
+```
+
+## Native Acceleration (Optional)
+
+For production workloads, add Cortex for Rust-accelerated SIMD distance calculations, vector quantization, and native embeddings:
+
+```bash
+npm install @soulcraft/cortex
+```
+
+```javascript
+import { Brainy } from '@soulcraft/brainy'
+import { registerCortex } from '@soulcraft/cortex'
+
+registerCortex()  // activates native acceleration globally
+
+const brain = new Brainy()
+await brain.init()
+```
+
+Cortex delivers a **5.2x geometric mean speedup** — see [Brainy vs Cortex](/docs/cortex/comparison) for measured benchmarks.
+
+## Browser (OPFS)
+
+Brainy works in the browser using the Origin Private File System:
+
+```javascript
+import { Brainy } from '@soulcraft/brainy'
+
+const brain = new Brainy({ storage: 'opfs' })
+await brain.init()
+```
+
+No server required. Data persists across page refreshes in the browser's private storage.
+
+## TypeScript
+
+Brainy ships with full TypeScript types. No `@types/` package needed:
+
+```typescript
+import { Brainy, NounType, VerbType } from '@soulcraft/brainy'
+
+const brain = new Brainy()
+await brain.init()
+
+const id = await brain.add({
+  data: 'Hello, Brainy',
+  type: NounType.Concept,
+  metadata: { created: Date.now() }
+})
+```
+
+## Next Steps
+
+- [Quick Start](/docs/getting-started/quick-start) — build your first knowledge graph in 60 seconds
+- [Zero Configuration](/docs/concepts/zero-config) — understand what Brainy auto-detects
+- [Storage Adapters](/docs/guides/storage-adapters) — choose the right storage for your deployment