Move types.ts, selectors/{index,create,resolve}.ts, and pdf-selector-math.ts
out of citation-evidence/src/anchor/ into src/ (pdf math under src/pdf/).
Rewrite all @shared/* imports to @citation-evidence/engine/shared; wire the
public entrypoint (src/index.ts) and the ./pdf subpath. Port the three unit
suites. Confidence ladder and selector-redundancy rules preserved verbatim.
Verified: pnpm test (29 passed), typecheck, and lint all green.
Also adds Node/TS .gitignore entries and the pnpm lockfile.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add package.json (name evidence-anchor, exports . and ./pdf, scripts
test/typecheck/lint), tsconfig.json (mirrors engine, DOM+jsx), vitest.config.ts
(happy-dom + react plugin), eslint.config.js (confines viewer libs to src/pdf/),
.nvmrc, and placeholder src entrypoints. Depends on @citation-evidence/engine
via sibling-checkout link only; no citation-evidence internals.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
