v0.3.0 -- Chunked exports and codebase-aware pipeline

Chunked Export Format

Every agent output is now a focused chunk: 50-200 lines with frontmatter, written to a predictable path. Each phase directory gets an INDEX.md manifest listing all chunks with descriptions.

This keeps context lean. Downstream agents load only the chunks they need instead of entire monolith files.

Codebase-Aware Pipeline

The pipeline now scans your codebase before making decisions. It detects your tech stack, existing design tokens, component libraries, and conventions. Strategy routing adapts based on what it finds -- a Next.js project with Tailwind gets different output than a bare HTML site.

Scope Routing

Projects are classified by scope (brand-only, project-only, full pipeline) and the pipeline skips irrelevant phases automatically.