fix(types)!: align send() response with real server contract ({ emails: [...], timestamp })

[AminDhouib]

The drift

POST /api/emails has always returned:

{ "success": true, "data": { "emails": [{ "contact": { "id": "…", "email": "…" }, "email": "<email-record-uuid>" }], "timestamp": "…" } }

i.e. data.emails has one entry per recipient (an array to fans out to several), and each entry is { contact: { id, email }, email } where the nested email is the id of the queued email record for that recipient.

The OpenAPI spec and this SDK's generated types instead declared a flat { contact, email, timestamp } and typed emails.send() as Promise<SendEmailData | SendEmailData[]>. So every TS user doing const { email } = await sendly.emails.send(...) got undefined.

Decision

The platform owner ruled the server shape canonical. The monorepo OpenAPI spec is already fixed and merged (DevinoSolutions/sendly main@ee407438). This PR regenerates the SDK from that corrected contract. Runtime SDK behavior was already correct — send() returns the response's unwrapped data verbatim — so only the types / spec / docs were stale.

What changed

• openapi.json — byte-copied from the corrected monorepo spec. SendEmailData is now { emails: SendEmailRecipientResult[], timestamp }; SendEmailRecipientResult = { contact: { id, email }, email }; SendEmailResponse.data = SendEmailData (the old single | array union is gone). Batch keeps BatchSendResponse / BatchEntryResult (rows'' data = SendEmailData).
• src/types.generated.ts — regenerated via pnpm build:types (never hand-edited).
• src/resources/emails.ts — send() return type is now the single corrected SendEmailData (was SendEmailData | SendEmailData[]); JSDoc updated.
• src/__tests__/emails.test.ts — send tests now genuinely assert the unwrapped { emails: [...], timestamp } shape.
• README.md — send example shows reading result.emails[0].email + result.timestamp.
• CHANGELOG.md — 0.2.0 entry: breaking type change, runtime unchanged, spec corrected to match server.
• package.json + SDK_VERSION — 0.1.0 → 0.2.0 (breaking type change; not yet published to npm).
• dist/ — rebuilt and committed (the consuming monorepo pins the GitHub tarball and uses dist directly).

Verification (all run locally, no --no-verify)

• pnpm lint (--max-warnings=0) — pass
• pnpm check-types — pass
• pnpm test — 74 passed (11 files)
• pnpm build — regenerated committed dist/
• pnpm format:check — pass
• dist/index.d.ts confirmed: send(body, opts?): Promise<SendEmailData> with SendEmailData = { emails: SendEmailRecipientResult[]; timestamp }; no remaining SendEmailData | SendEmailData[] union.

pnpm check-spec-drift will WARN vs live prod (prod not yet redeployed) — expected and non-blocking.