1765 Feature Completeness Checker 9efa14fd

---
phase: completed
title: Planning - Completeness Checker
description: Task breakdown for implementing the completeness checker.
---

# Project Planning & Task Breakdown

## Milestones
**What are the major checkpoints?**

- [x] Milestone 1: Basic matching logic implemented (Done).
- [x] Milestone 2: Detailed failure reporting and score calculation (Done).
- [x] Milestone 3: Fuzzy matching for resilience against noise (Done).
- [x] Milestone 4: 100% Score achieved on real integration fixtures (Done).

## Task Breakdown
**What specific work needs to be done?**

### Phase 1: Foundation
- [x] Task 1.1: Define `ValidationFailure` and `ValidationResult` dataclasses (Done).
- [x] Task 1.2: Implement `CompletenessChecker` class skeleton (Done).
- [x] Task 1.3: Integrate `text_segmenter` inside the checker (Done).

### Phase 2: Core Logic
- [x] Task 2.1: Implement the search loop with sliding search cursor (Done).
- [x] Task 2.2: Add score calculation and noise filtering (Done).
- [x] Task 2.3: Implement `_fuzzy_check` for token-based matching to handle embedded noise/artifacts.

### Phase 3: Testing & Optimization
- [x] Task 3.1: Unit tests with synthetic strings (Done).
- [x] Task 3.2: Integration test using real PDF/EPUB fixtures (Done - 100% score).
- [x] Task 3.3: Debug and resolve false negatives caused by header/footer artifacts.

## Timeline & Estimates
- Completed 2025-12-30.

## Risks & Mitigation
- **Risk:** Slight extraction differences blocking exact matches.
- **Mitigation:** Implemented token-based (85% threshold) fuzzy search fallback.
- **Risk:** High memory usage for very large books.
- **Mitigation:** The checker uses a sliding window search `current_pos` and local fuzzy search window (10k chars) to keep performance high.