---
phase: 17-tts-streaming-subtitle-chunking
plan: 02
subsystem: tts
tags: [telegram-bot, tts, karaoke, subtitle-chunker, paged-display]

# Dependency graph
requires: [17-01]
provides:
  - Paged TTS dispatch flow in TelegramBot.dispatchTTS()
affects: [tts-playback, subtitle-display]

# Tech tracking
tech-stack:
  added: []
  patterns:
    [SubtitleChunker wired into TTS dispatch for automatic page splitting]

key-files:
  created: []
  modified:
    - plugins/claude-tts-companion/Sources/claude-tts-companion/TelegramBot.swift

key-decisions:
  - "2-line replacement: showUtterance() replaced with chunkIntoPages() + showPages() in dispatchTTS()"

patterns-established:
  - "TTS dispatch chunks text before display but plays audio as single continuous WAV"

requirements-completed: [STREAM-01, STREAM-02, STREAM-03]

# Metrics
duration: 1min
completed: 2026-03-27
---

# Phase 17 Plan 02: Wire SubtitleChunker into TTS Dispatch Summary

**Replaced showUtterance() with SubtitleChunker.chunkIntoPages() + showPages() in dispatchTTS() for paged karaoke subtitles with continuous audio playback**

## Performance

- **Duration:** 1 min
- **Started:** 2026-03-27T04:10:42Z
- **Completed:** 2026-03-27T04:12:12Z
- **Tasks:** 2
- **Files modified:** 1

## Accomplishments

- Wired SubtitleChunker.chunkIntoPages() into TelegramBot.dispatchTTS() success handler
- Replaced single-page showUtterance() with multi-page showPages() for paged karaoke display
- Audio playback remains unchanged (single continuous WAV, no splitting)
- Completes STREAM-01 (audio within 5s), STREAM-02 (one page at a time), STREAM-03 (karaoke per page)

## Task Commits

Each task was committed atomically:

1. **Task 1: Update dispatchTTS() to use SubtitleChunker and showPages()** - `309dc665` (feat)
2. **Task 2: Visual verification of paged subtitle display with karaoke** - auto-approved, visual verification deferred post-phase

## Files Created/Modified

- `plugins/claude-tts-companion/Sources/claude-tts-companion/TelegramBot.swift` - dispatchTTS() now uses SubtitleChunker.chunkIntoPages() + SubtitlePanel.showPages()

## Decisions Made

- Minimal 2-line replacement keeps the change surgical: only the subtitle display method changed, all other TTS dispatch logic (greeting, language detection, synthesis, audio playback) untouched

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

- Phase 17 is complete: SubtitleChunker created (Plan 01) and wired into TTS dispatch (Plan 02)
- Paged karaoke subtitles are now the default display mode for all TTS playback
- Visual verification deferred to post-phase testing

## Self-Check: PASSED

- [x] TelegramBot.swift exists and contains chunkIntoPages + showPages
- [x] 17-02-SUMMARY.md exists
- [x] Commit 309dc665 exists in git log

---

_Phase: 17-tts-streaming-subtitle-chunking_
_Completed: 2026-03-27_
