chore: drop 27 imports nothing references in src and adapters

Found by widening scripts/pr/dead-imports.ts past src/server/ws once its
lexer stopped desyncing. None of these bindings appear anywhere in their own
file; several are the tail of a move that left the import behind, and
useMergedTools still lists replBridgeEnabled in a dependency array after the
useAppState call that set it was stubbed out.

Nine statements lost their last binding. Each target was checked for a
top-level side effect first: node:fs, node:fs/promises and bun:bundle have
none, ws/events.js is a type-only import that never emits, AppState.tsx,
model/model.ts and markdown-style.ts declare only, and utils/config.ts does
register a cleanup but is imported by 157 other files in src, so
attachments.ts dropping it cannot unregister anything.

No behavior change intended and none observed: src is 2995 pass / 37 skip /
30 fail across 273 files before and after, with the 30 failures identical
test for test, and adapters is 437 pass / 0 fail both times. The 30 are
pre-existing and unrelated.

adapters/common/__tests__/message-buffer.test.ts

@@ -1,4 +1,4 @@
-import { describe, it, expect, beforeEach } from 'bun:test'
+import { describe, it, expect } from 'bun:test'
 import { MessageBuffer } from '../message-buffer.js'
 
 describe('MessageBuffer', () => {

adapters/feishu/__tests__/streaming-card.test.ts

@@ -11,7 +11,7 @@
  * - 纯 patch fallback 路径
  */
 
-import { describe, it, expect, beforeEach } from 'bun:test'
+import { describe, it, expect } from 'bun:test'
 import {
   StreamingCard,
   buildInitialStreamingCard,

adapters/feishu/index.ts

@@ -9,7 +9,6 @@
 
 import * as Lark from '@larksuiteoapi/node-sdk'
 import * as path from 'node:path'
-import * as fs from 'node:fs/promises'
 import { WsBridge, type ServerMessage, type AttachmentRef } from '../common/ws-bridge.js'
 import { MessageDedup } from '../common/message-dedup.js'
 import { StreamingCard } from './streaming-card.js'
@@ -19,7 +18,6 @@ import {
   formatImHelp,
   formatImStatus,
   formatPermissionRequest,
-  splitMessage,
 } from '../common/format.js'
 import {
   formatPermissionDecisionStatus,
@@ -31,7 +29,6 @@ import { SessionStore } from '../common/session-store.js'
 import { AdapterHttpClient, type RecentProject } from '../common/http-client.js'
 import { restoreStoredSessionBinding } from '../common/session-recovery.js'
 import { isAllowedUser, tryPair } from '../common/pairing.js'
-import { optimizeMarkdownForFeishu } from './markdown-style.js'
 import { extractInboundPayload } from './extract-payload.js'
 import { FeishuMediaService } from './media.js'
 import { AttachmentStore } from '../common/attachment/attachment-store.js'

adapters/telegram/__tests__/telegram.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'bun:test'
-import { splitMessage, formatPermissionRequest, truncateInput, escapeMarkdownV2 } from '../../common/format.js'
+import { splitMessage, formatPermissionRequest, escapeMarkdownV2 } from '../../common/format.js'
 import { parsePermitCallbackData } from '../../common/permission.js'
 import {
   buildTelegramThinkingUpdate,

adapters/whatsapp/index.ts

@@ -5,7 +5,6 @@
  * then run: bun run whatsapp
  */
 
-import * as fs from 'node:fs/promises'
 import * as path from 'node:path'
 import {
   normalizeMessageContent,