Migrate the nate.rip application from the old rip.nate.* collections to the new site.standard schema for improved consistency and maintainability.

**Lexicon Changes** - Added `site.standard.document` lexicon for generic document records with fragmentType enum (post/shot/list/link) - Added `site.standard.publication` lexicon for publication metadata

**Scripts** - Added `upload-publication.ts` to create publication singleton records - Added `migrate-to-standard.ts` to convert existing records from old schema to new schema - Updated `upload-link.ts`, `upload-post.ts`, and `upload.ts` to target site.standard.document collection with new field mappings (content→textContent, createdAt→publishedAt, url→externalUrl)

**Frontend Updates** - Simplified `lib/atproto.ts` to fetch from a single COLLECTION_DOCUMENT with automatic fragmentType detection - Updated `lib/types.ts` to include atUri field on Fragment type - Updated `pages/f/[id].astro` to pass atUri to Base layout - Updated `layouts/Base.astro` to add atUri prop and rel="site.standard.document" link header

**Dependencies** - Removed ~8 "peer" flags from package-lock.json (dependencies no longer peer-only) - Removed ~25 "dev" flags from esbuild platform-specific packages

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