---
phase: 13-auto-continue-evaluation
plan: 01
subsystem: auto-continue
tags: [minimax, evaluation, state-management, sweep, plan-discovery]

requires:
  - phase: 07-auto-continue-stub
    provides: AutoContinueEvaluator stub with ContinueDecision enum and MiniMaxClient integration
provides:
  - Full legacy auto-continue evaluation engine with SYSTEM_PROMPT, SWEEP_PROMPT, per-session state tracking
  - Sibling JSONL plan discovery with sweep_done lifecycle check
  - Deterministic sweep detection for checkbox-based plans
  - Multi-line MiniMax decision parsing with fail-open defaults
  - Tool breakdown aggregation excluding subagent orchestration tools
affects: [13-02-telegram-notification, stop-hook]

tech-stack:
  added: []
  patterns:
    [
      per-session JSON state files,
      budget-limited transcript building,
      deterministic sweep fallback,
    ]

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

key-decisions:
  - "Snake-case CodingKeys on AutoContinueState for backward compatibility with legacy TypeScript state files"
  - "Unicode escapes for em dashes in prompt templates (consistent with Phase 12 pattern)"

patterns-established:
  - "Per-session state persistence at ~/.claude/hooks/state/auto-continue-{sessionId}.json"
  - "Deterministic sweep fallback when MiniMax says DONE but all checkboxes checked"
  - "Manual intervention detection via lastBlockedAt timestamp window (5 min)"

requirements-completed: [EVAL-01, EVAL-02, EVAL-03, EVAL-04, EVAL-06]

duration: 4min
completed: 2026-03-27
---

# Phase 13 Plan 01: Auto-Continue Evaluation Summary

**Full legacy auto-continue evaluation engine ported from TypeScript with verbatim SYSTEM_PROMPT/SWEEP_PROMPT, per-session state tracking, sibling JSONL plan discovery, and deterministic sweep fallback**

## Performance

- **Duration:** 4 min
- **Started:** 2026-03-27T00:08:10Z
- **Completed:** 2026-03-27T00:12:10Z
- **Tasks:** 1
- **Files modified:** 2

## Accomplishments

### Task 1: Rewrite AutoContinue.swift with full legacy evaluation logic

Completely replaced the Phase 7 stub (250 lines) with the full legacy evaluation engine (796 lines). All 13 components from the plan implemented:

1. **ContinueDecision enum** -- kept existing, unchanged
2. **AutoContinueState struct** (EVAL-04) -- Codable with snake_case CodingKeys for legacy compatibility
3. **Constants** -- MAX_ITERATIONS, MAX_RUNTIME_MIN, TRANSCRIPT_BUDGET with env var overrides, ABSOLUTE_MAX
4. **SYSTEM_PROMPT** (EVAL-01) -- verbatim from legacy TypeScript
5. **SWEEP_PROMPT** (EVAL-03) -- verbatim 5-step pipeline from legacy TypeScript
6. **Plan discovery** (EVAL-02) -- scans current transcript + sibling JSONLs with sweep_done check
7. **Transcript building** -- budget-limited with per-field truncation (2000/4000/1500 chars)
8. **Evaluation function** -- MiniMax query with plan/sweep sections
9. **Decision parsing** -- multi-line, pipe-delimited, prefix matching, fail-open to DONE
10. **Deterministic sweep detection** (EVAL-06) -- checkbox counting with review section check
11. **Main evaluate() method** -- full pipeline: state load, intervention detection, limits, MiniMax, sweep fallback
12. **Tool breakdown** -- aggregation excluding subagent tools, top-6, "Bash61 Edit54" format
13. **Checkbox progress helpers** -- checkboxCounts, progressBar, extractPlanTitle

Also updated `main.swift` call site to match the new `evaluate(sessionId:transcriptPath:cwd:)` signature.

## Verification

- `swift build` succeeds with zero errors
- SYSTEM_PROMPT contains "autonomous session evaluator" (EVAL-01)
- SWEEP_PROMPT contains "Blind Spot Analysis" (EVAL-03)
- AutoContinueState referenced 7 times (EVAL-04)
- "sibling" referenced 20 times (EVAL-02)
- detectSweepNeeded referenced 2 times (EVAL-06)

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] Updated main.swift call site for new evaluate() signature**

- **Found during:** Task 1 verification (swift build)
- **Issue:** main.swift called old `evaluate(transcriptPath:)` which returned a tuple; new signature is `evaluate(sessionId:transcriptPath:cwd:)` returning `EvaluationResult`
- **Fix:** Updated destructuring to use the new struct fields
- **Files modified:** main.swift
- **Commit:** d18f99a5

## Known Stubs

None -- all evaluation logic fully implemented.

## Self-Check: PASSED
