feat: add @hanzo/og programmatic OG image package

Shared package for generating OpenGraph/social images across all Hanzo
sites. Supports 6 layout variants (page, model, code, stat, split,
minimal) with inline styles for next/og ImageResponse compatibility.
Includes HANZO_AI_THEME and HANZO_INDUSTRIES_THEME brand presets.

Author: hanzo-dev

packages/og/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "@hanzo/og",
+  "version": "1.0.0",
+  "description": "Programmatic OpenGraph image generation for Hanzo sites",
+  "main": "./src/index.ts",
+  "types": "./src/index.ts",
+  "peerDependencies": {
+    "next": ">=14.0.0",
+    "react": ">=18.0.0"
+  },
+  "keywords": ["og", "opengraph", "social", "seo", "hanzo"]
+}

packages/og/src/index.ts

@@ -0,0 +1,4 @@
+export { createOgImageResponse } from './response.js'
+export { renderOgImage } from './render.js'
+export type { OgConfig } from './types.js'
+export { HANZO_AI_THEME, HANZO_INDUSTRIES_THEME, HANZO_BRAND_SVG, HANZO_H_SVG, MODALITY_COLORS } from './theme.js'