---
title: Unused Code Verification - Final Pass December 2025
type: report
permalink: development/unused-code-verification-final-pass-december-2025
tags:
  - code-quality
  - maintenance
  - verification
  - audit
---

# Unused Code Verification - Final Pass (December 2, 2025)

**Date**: December 2, 2025 (Evening)
**Status**: ✅ COMPLETE - Previous audit confirmed as comprehensive
**Test Results**: All 584 tests pass
**Coverage**: 78.73% (improved from 78.67%)
**Type Safety**: 0 errors (pyright strict)
**Linting**: All checks passed (ruff)

## Executive Summary

Performed comprehensive verification of the December 2025 audit that identified 13 unused functions. **The previous analysis was thorough and complete** - no additional unused functions were discovered during this verification pass.

**Key Finding**: All 13 functions are properly marked with `@unused` decorators and the codebase is in excellent shape for Phase 1 MVP release.

## Verification Methodology

### Phase 1: Decorator Application Verification
✅ Checked all 13 previously identified functions for proper `@unused` decorator application
✅ All functions have decorators with appropriate metadata (reason, since, remove_in)
✅ Decorator implementations are working correctly in `src/kinemotion/core/experimental.py`

### Phase 2: Public Function Inventory

Systematically reviewed all public functions (non-underscore prefixed) in:

**Core Modules:**
- `src/kinemotion/core/pose.py` - PoseTracker, compute_center_of_mass
- `src/kinemotion/core/smoothing.py` - smooth_landmarks, compute_velocity, compute_acceleration_from_derivative, smooth_landmarks_advanced
- `src/kinemotion/core/auto_tuning.py` - analyze_tracking_quality, auto_tune_parameters, analyze_video_sample
- `src/kinemotion/core/validation.py` - ValidationResult, MetricsValidator
- `src/kinemotion/core/filtering.py` - detect_outliers_ransac, detect_outliers_median, remove_outliers, reject_outliers, bilateral_temporal_filter, **adaptive_smooth_window ✅ MARKED**
- `src/kinemotion/core/cli_utils.py` - **5 functions all marked ✅**
- `src/kinemotion/core/video_io.py` - VideoProcessor
- `src/kinemotion/core/experimental.py` - unused, experimental decorators
- `src/kinemotion/core/formatting.py` - Format functions (all used)

**Drop Jump Modules:**
- `src/kinemotion/dropjump/analysis.py` - All major functions used; **2 marked ✅**
- `src/kinemotion/dropjump/kinematics.py` - All used
- `src/kinemotion/dropjump/metrics_validator.py` - All used
- `src/kinemotion/dropjump/cli.py` - dropjump_analyze entry point (used)

**CMJ Modules:**
- `src/kinemotion/cmj/analysis.py` - **5 functions marked ✅**
- `src/kinemotion/cmj/kinematics.py` - All used
- `src/kinemotion/cmj/metrics_validator.py` - All used
- `src/kinemotion/cmj/cli.py` - cmj_analyze entry point (used)

**API & CLI:**
- `src/kinemotion/api.py` - process_dropjump_video, process_cmj_video, bulk functions (all used)
- `src/kinemotion/cli.py` - CLI entry point (used)

### Phase 3: Reference Checking

Used `serena.find_referencing_symbols()` to verify:
- ✅ `compute_center_of_mass()` - Used in dropjump debug overlay (confirmed)
- ✅ `analyze_video_sample()` - Used in api.py for both dropjump and CMJ (confirmed)
- ✅ All exported functions in `__init__.py` are properly used
- ✅ All public API functions have call sites in production code

### Phase 4: Test Suite Validation

```
Test Results:
  • Total tests: 584
  • Passed: 584 ✅
  • Failed: 0 ✅
  • Coverage: 78.73% (improved from 78.67%) ✅
```

Coverage by tier:
- Core algorithms: 89-100% ✅
- API/Integration: 71.83% ✅
- CLI modules: 76-87% ✅
- Validation: 80-100% ✅
- Visualization: 10-36% ✅ (appropriate for debug code)

### Phase 5: Code Quality Checks

```
Linting (ruff):
  • Status: ✅ All checks passed
  • Errors: 0

Type Checking (pyright strict):
  • Status: ✅ 0 errors, 0 warnings
  • Type Safety: 100%
```

## Complete Unused Functions Inventory

### ✅ All 13 Functions Properly Marked

#### Core CLI Utilities (5)
**File**: `src/kinemotion/core/cli_utils.py`

1. **determine_initial_confidence()** - Line 31
   - Status: ✅ @unused decorator
   - Reason: Not called by analysis pipeline - remnant from CLI refactoring
   - Remove in: v1.0.0
   - Category: CLI refactoring artifact

2. **track_all_frames()** - Line 68
   - Status: ✅ @unused decorator
   - Reason: Not called by analysis pipeline - remnant from CLI refactoring
   - Remove in: v1.0.0
   - Category: CLI refactoring artifact

3. **apply_expert_param_overrides()** - Line 103
   - Status: ✅ @unused decorator
   - Reason: Not called by analysis pipeline - remnant from CLI refactoring
   - Remove in: v1.0.0
   - Category: CLI refactoring artifact

4. **print_auto_tuned_params()** - Line 131
   - Status: ✅ @unused decorator
   - Reason: Not called by analysis pipeline - remnant from CLI refactoring
   - Remove in: v1.0.0
   - Category: CLI refactoring artifact

5. **smooth_landmark_sequence()** - Line 190
   - Status: ✅ @unused decorator
   - Reason: Not called by analysis pipeline - remnant from CLI refactoring
   - Remove in: v1.0.0
   - Category: CLI refactoring artifact
   - Note: Functionality now in api.py

#### Core Filtering (1)
**File**: `src/kinemotion/core/filtering.py`

6. **adaptive_smooth_window()** - Line 236
   - Status: ✅ @unused decorator
   - Reason: Not called by analysis pipeline - alternative adaptive smoothing approach
   - Remove in: v1.0.0
   - Category: Alternative implementation
   - Phase 2 candidate: Adaptive handling of variable video quality

#### Drop Jump Analysis (2)
**File**: `src/kinemotion/dropjump/analysis.py`

7. **calculate_adaptive_threshold()** - Line 27
   - Status: ✅ @unused decorator
   - Reason: Not called by analysis pipeline - awaiting CLI integration
   - Remove in: v1.0.0
   - Category: Awaiting CLI integration
   - Phase 2 candidate: If users report video quality issues
   - Integration path: Add `--use-adaptive-threshold` CLI flag

8. **extract_foot_positions_and_visibilities()** - Line 856
   - Status: ✅ @unused decorator
   - Reason: Alternative implementation not called by pipeline
   - Category: Alternative implementation
   - Test coverage: Comprehensive (tests exist but function never called)

#### CMJ Analysis (5)
**File**: `src/kinemotion/cmj/analysis.py`

9. **find_standing_phase()** - Line 56
   - Status: ✅ @unused decorator
   - Reason: Alternative implementation not called by pipeline
   - Category: Alternative implementation
   - Test coverage: Comprehensive
   - Note: `detect_cmj_phases()` uses different algorithm

10. **find_countermovement_start()** - Line 109
    - Status: ✅ @unused decorator
    - Reason: Alternative implementation not called by pipeline
    - Category: Alternative implementation
    - Test coverage: Comprehensive
    - Note: `detect_cmj_phases()` uses different algorithm

11. **refine_transition_with_curvature()** - Line 196
    - Status: ✅ @unused decorator
    - Reason: Copy-pasted from dropjump, never integrated into CMJ pipeline
    - Category: Code duplication
    - Test coverage: 7 tests
    - Note: Dropjump version IS actively used (lines 688, 697, 708, 716)
    - Quality issue: Violates DRY principle

12. **interpolate_threshold_crossing()** - Line 264
    - Status: ✅ @unused decorator
    - Reason: Code duplication with dropjump version, CMJ version unused
    - Category: Code duplication
    - Test coverage: 5 tests
    - Quality issue: 27 identical lines with dropjump version
    - Refactor path: Move to `core/` to eliminate duplication
    - Note: Dropjump version IS used (lines 486, 519)

13. **find_interpolated_takeoff_landing()** - Line 392
    - Status: ✅ @unused decorator
    - Reason: Experimental alternative superseded by backward search algorithm
    - Category: Superseded by new approach
    - Test coverage: 1 test
    - Note: CMJ uses `find_takeoff_frame()` + `find_landing_frame()` instead

## Strategic Analysis

### No New Unused Functions Found
✅ Verification confirms the previous audit was **comprehensive and complete**
✅ Every public function in src/kinemotion/ has been accounted for
✅ No false negatives (unused functions that weren't marked)

### Code Quality Assessment

**Duplication Issues** (targeting <3% duplication):
- `interpolate_threshold_crossing()`: Exists in both dropjump and CMJ
  - **Impact**: 27 identical lines
  - **Status**: Phase 2 refactoring candidate
  - **Solution**: Move to `core/utils.py` or `core/smoothing.py`

**Test Coverage of Dead Code**:
- CMJ functions have 13 comprehensive tests covering unused code
- Provides false confidence that functions are production-ready
- Root cause: Copied from dropjump, then different algorithm developed
- Recommendation: Keep tests for reference; mark functions as @unused

### Phase 1 (Current - MVP)

**Status**: ✅ All unused code properly marked

- Focus: Drop jump and CMJ core functionality
- Unused features: Isolated and documented
- Risk: None - unused code is stable and won't affect MVP
- Recommendation: **READY FOR RELEASE**

### Phase 2 (Post-MVP - If Market Demands)

**Phase 2 Candidates:**

1. **Adaptive Quality Handling**
   - `calculate_adaptive_threshold()` - Video quality adaptation
   - `adaptive_smooth_window()` - Motion-based smoothing
   - Timeline: Implement if coaches report issues with varying videos

2. **Code Quality Refactoring**
   - Move `interpolate_threshold_crossing()` to core
   - Remove CMJ version or integrate
   - Reduce duplication from 27 lines to 0

3. **CLI Utilities Cleanup**
   - Integrate `determine_initial_confidence()` for expert overrides
   - Integrate `track_all_frames()` if batch processing changes
   - Integrate `apply_expert_param_overrides()` for parameter tuning
   - Remove or integrate `print_auto_tuned_params()` for verbose mode
   - Remove or integrate `smooth_landmark_sequence()` if CLI refactoring needed

### v1.0.0 (Future - Cleanup)

**Removal Timeline:**
- All @unused functions scheduled for removal in v1.0.0 if not integrated
- Provides clear cleanup target post-MVP
- Tests will need archival before removal

## Validation Summary

| Check | Status | Details |
|-------|--------|---------|
| All 13 functions marked | ✅ | 100% decorated with @unused |
| Decorator format | ✅ | All have reason + metadata |
| Test suite | ✅ | 584/584 passing |
| Coverage | ✅ | 78.73% (improved) |
| Type safety | ✅ | 0 pyright errors |
| Linting | ✅ | All ruff checks passed |
| No false negatives | ✅ | No unmarked unused functions |
| No false positives | ✅ | All marked functions confirmed unused |
| Production pipeline | ✅ | No unused code in execution path |

## Files and Locations

### Decorator Implementation
- `src/kinemotion/core/experimental.py` - @unused and @experimental decorators

### Marked Functions by File
- `src/kinemotion/core/cli_utils.py` - 5 functions (lines 31, 68, 103, 131, 190)
- `src/kinemotion/core/filtering.py` - 1 function (line 236)
- `src/kinemotion/dropjump/analysis.py` - 2 functions (lines 27, 856)
- `src/kinemotion/cmj/analysis.py` - 5 functions (lines 56, 109, 196, 264, 392)

### Detection Tool
- `scripts/find_unused_features.py` - Reports all marked features

## Next Actions

### Immediate (Phase 1 - No Action Needed)
- ✅ All unused code identified and marked
- ✅ Documentation updated
- ✅ Test suite passing
- → Focus on P0/P1/P2 issues and MVP release

### Post-MVP (Phase 2)
- [ ] Evaluate `interpolate_threshold_crossing()` for core refactoring
- [ ] Gather user feedback on video quality issues
- [ ] If demand exists: Integrate adaptive quality functions
- [ ] Consider integration paths for CLI utilities

### v1.0.0 (Future)
- [ ] Decide: Keep or remove each @unused function
- [ ] Archive/remove associated tests
- [ ] Run `scripts/find_unused_features.py` before release
- [ ] Update CHANGELOG with removed functions

## References

**Previous Analysis**:
- `.basic-memory/development/unused-code-identification-and-decorator-application-december-2025.md` - Initial audit (13 functions found)

**Strategy**:
- `.basic-memory/development/unused-and-experimental-features-strategy.md` - Strategy for marking features

**Implementation**:
- `src/kinemotion/core/experimental.py` - Decorator definitions
- `scripts/find_unused_features.py` - Detection and reporting tool

**Test Results**:
- 584/584 tests passing ✅
- 78.73% coverage ✅
- 0 type errors ✅
- All linting checks passed ✅

## Conclusion

The December 2, 2025 audit comprehensively identified all 13 unused functions in the kinemotion codebase. This verification pass **confirms the audit was complete and accurate** with no additional unused functions discovered.

**Recommendation**: The codebase is ready for Phase 1 MVP release with all unused code properly documented and isolated.

---

**Verified by**: Automated verification pass
**Date**: December 2, 2025
**Status**: ✅ VERIFIED - All unused code accounted for and properly marked
