Add document_share table (CREATE TABLE IF NOT EXISTS; opaque token, optional
expiry, revoke flag) and repos-shares.ts:
- mintShare: 256-bit randomBytes hex token (64 hex, unique), default +30d expiry,
audited — the token itself is never written to the audit trail or any log.
- validateShare: resolves a live token to its one document; null on
unknown / revoked / expired (ISO-8601 UTC lexical compare).
- revokeShare: flips revoked=1, audited.
- listShares: a document's shares, scoped and newest-first.
Wire POST /api/documents/:id/share and
POST /api/documents/:id/share/:shareId/revoke (requireAuth, document-scoped
share guard) and surface shares on GET /api/documents/:id. TDD: 14 tests cover
token shape/uniqueness, validate rejections, revoke, and audit-without-token.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Thomas Joise