refactor: group native chat text presentation (#34647)

config/scripts/ci-shard-timings.json

@@ -12509,7 +12509,7 @@
       "src/shared/native-chat-subagent-summary.test.ts": 45,
       "src/shared/native-chat/input/native-chat-task-list-history.test.ts": 58,
       "src/shared/native-chat/input/native-chat-task-list.test.ts": 41,
-      "src/shared/native-chat-text-reveal.test.ts": 27,
+      "src/shared/native-chat/transcript/native-chat-text-reveal.test.ts": 27,
       "src/shared/native-chat-transcript-contracts.test.ts": 591,
       "src/shared/native-chat-transcript-projection.test.ts": 134,
       "src/shared/native-chat-transcript-retention.test.ts": 55,

mobile/src/session/native-chat/transcript/MobileNativeChatMessage.paced-reveal.test.ts

@@ -5,8 +5,8 @@ import type { NativeChatMessage } from '../../../../../src/shared/native-chat-ty
 import {
   createNativeChatReplyRevealTracker,
   trackNativeChatReplyRows
-} from '../../../../../src/shared/native-chat-reply-reveals'
-import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS } from '../../../../../src/shared/native-chat-text-reveal'
+} from '../../../../../src/shared/native-chat/transcript/native-chat-reply-reveals'
+import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS } from '../../../../../src/shared/native-chat/transcript/native-chat-text-reveal'
 import {
   MobileNativeChatReplyRevealsContext,
   type MobileNativeChatReplyReveals

mobile/src/session/native-chat/transcript/MobileNativeChatMessageTime.tsx

@@ -3,7 +3,7 @@ import { Text } from 'react-native'
 import {
   NATIVE_CHAT_MESSAGE_FULL_TIME_FORMAT,
   NATIVE_CHAT_MESSAGE_TIME_FORMAT
-} from '../../../../../src/shared/native-chat-message-time'
+} from '../../../../../src/shared/native-chat/transcript/native-chat-message-time'
 import { colors, typography } from '../../../theme/mobile-theme'
 import { themedStyleSheet } from '../../../theme/themed-styles'
 import { useMobileColorScheme } from '../../../theme/use-mobile-color-scheme'

mobile/src/session/native-chat/transcript/MobileNativeChatPacedProse.tsx

@@ -1,5 +1,5 @@
 import { useMemo, type ReactNode } from 'react'
-import { nativeChatProseToMarkdown } from '../../../../../src/shared/native-chat-prose'
+import { nativeChatProseToMarkdown } from '../../../../../src/shared/native-chat/transcript/native-chat-prose'
 import { isTextBlock, type NativeChatBlock } from '../../../../../src/shared/native-chat-types'
 import {
   useMobileNativeChatPacedText,

mobile/src/session/native-chat/transcript/MobileNativeChatUserMessageFold.tsx

@@ -3,7 +3,7 @@ import { Pressable, Text, View } from 'react-native'
 import {
   NATIVE_CHAT_USER_MESSAGE_MAX_UNFOLDED_LINES,
   nativeChatUserMessageFolds
-} from '../../../../../src/shared/native-chat-user-message-fold'
+} from '../../../../../src/shared/native-chat/transcript/native-chat-user-message-fold'
 import { styles as markdownStyles } from '../../../components/mobile-markdown-styles'
 import { colors, spacing, typography } from '../../../theme/mobile-theme'
 import { themedStyleSheet } from '../../../theme/themed-styles'

mobile/src/session/native-chat/transcript/mobile-native-chat-reply-reveals.ts

@@ -5,7 +5,7 @@ import {
   createNativeChatReplyRevealTracker,
   trackNativeChatReplyRows,
   type NativeChatReplyReveals
-} from '../../../../../src/shared/native-chat-reply-reveals'
+} from '../../../../../src/shared/native-chat/transcript/native-chat-reply-reveals'
 import { useReducedMotionEnabled } from '../../../platform/use-reduced-motion'
 
 // Retain reveal state above list remounts/view toggles so replies resume instead of replaying.

mobile/src/session/native-chat/transcript/use-mobile-native-chat-paced-text.ts

@@ -11,7 +11,7 @@ import {
   receiveNativeChatText,
   startNativeChatTextReveal,
   type NativeChatTextRevealFrames
-} from '../../../../../src/shared/native-chat-text-reveal'
+} from '../../../../../src/shared/native-chat/transcript/native-chat-text-reveal'
 import { MobileNativeChatReplyRevealsContext } from './mobile-native-chat-reply-reveals'
 import { MobileNativeChatGrowthHoldContext } from '../../mobile-native-chat-growth-hold'
 

src/renderer/src/components/native-chat/NativeChatMessageList.render-cost.test.tsx

@@ -25,7 +25,7 @@ afterEach(() => {
   expect(unusedChatLeaves.openSender).not.toHaveBeenCalled()
 })
 import type * as NativeChatWorkRunModule from '../../../../shared/native-chat/native-chat-work-run'
-import type * as NativeChatProseModule from '../../../../shared/native-chat-prose'
+import type * as NativeChatProseModule from '../../../../shared/native-chat/transcript/native-chat-prose'
 import type { NativeChatMessage } from '../../../../shared/native-chat-types'
 import { projectStructuredAgentSessionMessages } from '../../../../shared/structured-agent-session-message-projection'
 import type { AgentJournalRenderItem } from '../../../../shared/agent-session-journal-types'
@@ -35,7 +35,7 @@ import { installNativeChatMessageListTestViewport } from './native-chat-message-
 
 // Count markdown derivations: low render counts alone can hide repeated settled-row work.
 const proseCalls = vi.hoisted(() => ({ count: 0 }))
-vi.mock('../../../../shared/native-chat-prose', async (importOriginal) => {
+vi.mock('../../../../shared/native-chat/transcript/native-chat-prose', async (importOriginal) => {
   const actual = await importOriginal<typeof NativeChatProseModule>()
   return {
     ...actual,

src/renderer/src/components/native-chat/NativeChatMessageTimestamp.tsx

@@ -4,7 +4,7 @@ import { cn } from '@/lib/utils'
 import {
   NATIVE_CHAT_MESSAGE_FULL_TIME_FORMAT,
   NATIVE_CHAT_MESSAGE_TIME_FORMAT
-} from '../../../../shared/native-chat-message-time'
+} from '../../../../shared/native-chat/transcript/native-chat-message-time'
 
 let cached: {
   locale: string

src/renderer/src/components/native-chat/NativeChatPacedMarkdown.file-links.test.tsx

@@ -11,7 +11,7 @@ import {
   NativeChatReplyRevealsContext,
   type NativeChatReplyReveals
 } from './native-chat-reply-reveals'
-import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS } from '../../../../shared/native-chat-text-reveal'
+import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS } from '../../../../shared/native-chat/transcript/native-chat-text-reveal'
 
 vi.mock('@/hooks/usePrefersReducedMotion', () => ({ usePrefersReducedMotion: () => false }))
 vi.mock('./native-chat-visual-markdown-extension', () => ({

src/renderer/src/components/native-chat/NativeChatPacedMarkdown.mermaid.test.tsx

@@ -6,7 +6,7 @@ import {
   NativeChatReplyRevealsContext,
   type NativeChatReplyReveals
 } from './native-chat-reply-reveals'
-import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS } from '../../../../shared/native-chat-text-reveal'
+import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS } from '../../../../shared/native-chat/transcript/native-chat-text-reveal'
 
 const reveals: NativeChatReplyReveals = { begun: new Set(['reply']), drawn: new Map() }
 

src/renderer/src/components/native-chat/NativeChatUserMessageFold.tsx

@@ -3,7 +3,7 @@ import { Button } from '@/components/ui/button'
 import { translate } from '@/i18n/i18n'
 import { cn } from '@/lib/utils'
 import { useNativeChatDisclosure } from './native-chat-disclosure-store'
-import { nativeChatUserMessageFolds } from '../../../../shared/native-chat-user-message-fold'
+import { nativeChatUserMessageFolds } from '../../../../shared/native-chat/transcript/native-chat-user-message-fold'
 
 export function NativeChatUserMessageFold({
   messageId,

src/renderer/src/components/native-chat/native-chat-reply-reveals.ts

@@ -3,7 +3,7 @@ import {
   createNativeChatReplyRevealTracker,
   trackNativeChatReplyRows,
   type NativeChatReplyReveals
-} from '../../../../shared/native-chat-reply-reveals'
+} from '../../../../shared/native-chat/transcript/native-chat-reply-reveals'
 
 export type { NativeChatReplyReveals }
 

src/renderer/src/components/native-chat/native-chat-row-height-estimate.ts

@@ -5,7 +5,7 @@ import { deriveNativeChatRowContent } from '../../../../shared/native-chat-row-c
 import {
   NATIVE_CHAT_USER_MESSAGE_FOLDED_PX,
   nativeChatUserMessageFolds
-} from '../../../../shared/native-chat-user-message-fold'
+} from '../../../../shared/native-chat/transcript/native-chat-user-message-fold'
 
 export type NativeChatRowContentMetrics = {
   role: NativeChatMessage['role']

src/renderer/src/components/native-chat/use-native-chat-paced-text.remount.test.tsx

@@ -6,7 +6,7 @@ import {
   NativeChatReplyRevealsContext,
   type NativeChatReplyReveals
 } from './native-chat-reply-reveals'
-import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS as D } from '../../../../shared/native-chat-text-reveal'
+import { NATIVE_CHAT_TEXT_REVEAL_DELAY_MS as D } from '../../../../shared/native-chat/transcript/native-chat-text-reveal'
 import { useNativeChatPacedText } from './use-native-chat-paced-text'
 
 const motion = vi.hoisted(() => ({ reduced: false }))

src/renderer/src/components/native-chat/use-native-chat-paced-text.ts

@@ -8,7 +8,7 @@ import {
   startNativeChatTextReveal,
   type NativeChatTextReveal,
   type NativeChatTextRevealFrames
-} from '../../../../shared/native-chat-text-reveal'
+} from '../../../../shared/native-chat/transcript/native-chat-text-reveal'
 
 const WORD_FADE_MS = 300
 

src/renderer/src/components/sidebar/comment-markdown-word-fade.ts

@@ -1,7 +1,7 @@
 // Keep existing word elements stable while streams append so only newly mounted words fade.
 
 import type { Element, Root } from 'hast'
-import { SPACELESS_SCRIPT_RANGES } from '../../../../shared/native-chat-text-reveal'
+import { SPACELESS_SCRIPT_RANGES } from '../../../../shared/native-chat/transcript/native-chat-text-reveal'
 
 /** Elements whose renderers read their text, or that are faded in as a whole. */
 const UNSPLIT_TAGS = new Set(['a', 'code', 'pre', 'kbd', 'svg', 'math'])

src/shared/native-chat-row-content.ts

@@ -13,7 +13,7 @@ import {
   type NativeChatBlock
 } from './native-chat-types'
 import { splitNativeChatBlocks } from './native-chat/tools/native-chat-tool-fold'
-import { nativeChatProseToMarkdown } from './native-chat-prose'
+import { nativeChatProseToMarkdown } from './native-chat/transcript/native-chat-prose'
 
 /** Inferred from `derive` so the shape cannot drift from what it returns. */
 export type NativeChatRowContent = ReturnType<typeof derive>

src/shared/native-chat/transcript/native-chat-prose.ts

@@ -1,4 +1,4 @@
-import { isTextBlock, type NativeChatBlock } from './native-chat-types'
+import { isTextBlock, type NativeChatBlock } from '../../native-chat-types'
 
 export function nativeChatProseToMarkdown(blocks: NativeChatBlock[]): string {
   return blocks