⚙️[Chore] Sprint 0 Repository Foundation

[maruson08]

Summary

• initialize the ESM-first TypeScript library scaffold with zero runtime dependencies
• add the three-function public API skeleton and typed deterministic not-implemented behavior
• establish shared metadata, diagnostic, and conservative parser-limit models
• configure Vitest, strict TypeScript, ESLint, Prettier, tsup, and lockfile-based CI
• document architecture, security invariants, cleaning policy, format roadmap, and explicit non-goals

Sprint 0 non-goals

No JPEG, PNG, WebP, TIFF, EXIF, GPS, XMP, IPTC, ICC, cleaning, rewriting, decompression, image decoding, UI, Rust, or WebAssembly implementation is included.

Validation

• npm run format:check — passed
• npm run lint — passed
• npm run typecheck — passed
• npm test — 2 files, 8 tests passed
• npm run build — ESM and declarations built successfully
• npm audit --omit=dev — 0 vulnerabilities
• npm pack --dry-run — expected 7-file package payload

Dependencies

• runtime dependencies: 0
• development dependencies: 8
• esbuild override: 0.28.2 to resolve the current transitive development-tool advisory