# Tasks: enterprise-telegram-client

**Change ID**: enterprise-telegram-client
**Package**: `@suaveplan/telegram-client`
**Target path**: `universal/social/telegram-client`
**Prerequisite packages on Verdaccio**: `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/retry`

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## 0. Pre-flight (non-negotiable)

- [ ] 0.1 Confirm clean working tree (`git status` reports nothing) and no in-flight worktrees with uncommitted work (`git worktree list` then `git status` in each)
- [ ] 0.2 If any worktrees exist under `.claude/worktrees/`, account for each one: still-active agent, work-pending-merge, or stale-and-prune. Stale worktrees MUST be removed (`git worktree remove`) before opening a new one — code that has been lost twice on main is the failure mode this guards against.
- [ ] 0.3 Confirm the package set in `MANIFEST.md` matches `find packages -maxdepth 3 -name package.json` count. Drift here means a prior change archived without regenerating the manifest.

## 1. Scaffold

- [ ] Create `universal/social/telegram-client/` with `src/`, `tests/`, `src/__benchmarks__/` and all feature subdirectories per the layout in `proposal.md`.
- [ ] Write `package.json` at version `0.1.0` with `"type": "module"`, `"sideEffects": false`, correct `exports` map, `dependencies`, and `devDependencies`.
- [ ] Write `tsconfig.json` extending `@suaveplan/typescript-config/library.json`.
- [ ] Write `vitest.config.ts` using `createTestConfig()` from `@suaveplan/testing/config`.
- [ ] Add `lint`, `typecheck`, `test`, `test:coverage`, `build`, `docs:check` scripts.

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## 2. Types + errors

- [ ] `src/types/common.ts` — `TelegramBotOptions`, `SendMessageOptions`, `SendMediaOptions`, `EditOptions`, `AnswerCallbackOptions`, `GetUpdatesOptions`, `WebhookOptions`, `TelegramMessage`, `TelegramUpdate`, `TelegramUser`, `InlineQueryResult`, `InlineKeyboardMarkup`, `ReplyKeyboardMarkup`, `ReplyKeyboardRemove`.
- [ ] `src/types/common.md` (≥200 words, both examples, API reference).
- [ ] `src/error-codes.ts` — `TelegramErrorCode` (7 codes), metadata, register, eager call.
- [ ] `src/types/schemas.ts` + `schemas.md` — Zod schemas.

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## 3. Core modules

- [ ] **`src/core/api-caller/`** — `ApiCaller`: calls `https://api.telegram.org/bot{token}/method`; parses JSON; throws `TELEGRAM_API_ERROR` on `ok:false` (with Telegram `error_code` and `description`); handles 429 with `retry_after`; wraps with `@suaveplan/retry`. Tests: success, ok:false, 429.
- [ ] **`src/core/telegram-bot/`** — `TelegramBot`: implements all public methods. `sendPhoto`/`sendDocument` with URL string uses `photo=url` form data; with `Uint8Array` uses `multipart/form-data`. Tests: `sendMessage` text+HTML parse_mode, `sendPhoto` URL, `editMessageText`, `deleteMessage`, `answerCallbackQuery`, `setWebhook`, `deleteWebhook`, `getMe`.
- [ ] **`src/core/update-poller/`** — `getUpdates(options)`: `AsyncGenerator<TelegramUpdate>` that manages `offset` (last_update_id + 1); each iteration calls `getUpdates` API with `timeout=25` (long-poll); on `AbortSignal`, finishes current batch and yields. Tests: yields updates in order, offset advances, abort exits generator cleanly.
- [ ] **`src/keyboards/keyboard-builder/`** — `inlineKeyboard`, `replyKeyboard`, `removeKeyboard`: pure constructors. Tests: 2×2 inline, 3-button reply, remove, ForceReply.

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## 4. OTel instrumentation

- [ ] Span `telegram.api_call` with attribute `telegram.method`; counter `telegram.api_total`; histogram `telegram.api_duration_ms`.

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## 5. Property-based tests (`tests/property.test.ts`)

- [ ] Keyboard builder: for arbitrary row/button arrays, `inlineKeyboard(rows)` produces JSON with `inline_keyboard` array of same dimensions.

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## 6. Benchmarks (`src/__benchmarks__/telegram-client.bench.ts`)

- [ ] `inlineKeyboard` construction for 10-row × 5-button keyboard 100 000 times.

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## 7. Docs + verify

- [ ] One `.md` per implementation file (≥200 words, both examples, API reference). Root `README.md`.
- [ ] `bunx turbo lint typecheck test --filter=@suaveplan/telegram-client` — green.
- [ ] `bunx turbo test:coverage --filter=@suaveplan/telegram-client` — 100%.
- [ ] `bun scripts/publish.ts --package @suaveplan/telegram-client`.
- [ ] Archive: `openspec/archive/2026-04-24-enterprise-telegram-client/`.