---
phase: 42
plan: 01
subsystem: api-docs
tags: [cleanup, documentation, v10.0, verification]
dependency_graph:
  requires: [phase-39, phase-40, phase-41]
  provides: [v10.0-complete]
  affects: [CLAUDE.md, python/opendeviationbar/CLAUDE.md]
tech_stack:
  patterns: [expand-contract, frozen-dataclass, structured-types]
key_files:
  modified:
    - CLAUDE.md
    - python/opendeviationbar/CLAUDE.md
    - .planning/STATE.md
decisions:
  - PMD CPD count 19 (token-level duplication unchanged; BarKey reduces structural not token duplication)
  - Expand-contract verified working for all three new types
metrics:
  duration: ~10min
  completed: 2026-03-30
---

# Phase 42 Plan 01: Cleanup + Ship v10.0 Summary

v10.0 API refactoring docs updated with BarKey, ProcessingOptions, CacheOptions; backward compatibility verified; pushed to origin.

## Tasks Completed

| Task | Name                                          | Status | Commit              | Key Files                                      |
| ---- | --------------------------------------------- | ------ | ------------------- | ---------------------------------------------- |
| 1    | Verify expand-contract backward compatibility | PASS   | (verification only) | types.py, orchestration/open_deviation_bars.py |
| 2    | Update CLAUDE.md Python API section           | DONE   | 1731e1a             | CLAUDE.md, python/opendeviationbar/CLAUDE.md   |
| 3    | Run PMD CPD verification                      | DONE   | (report only)       | N/A                                            |
| 4    | Push all changes                              | DONE   | pushed              | main -> origin/main                            |
| 5    | Update STATE.md                               | DONE   | (this commit)       | .planning/STATE.md                             |

## Task Details

### Task 1: Expand-Contract Verification

All checks passed:

- `BarKey("BTCUSDT", 250)` creates frozen dataclass with `ouroboros_mode="aion"` default
- `ProcessingOptions(include_microstructure=True)` preserves all other defaults
- `CacheOptions(use_cache=False)` preserves all other defaults
- `_resolve_bar_key()` handles both `str` and `BarKey` inputs
- `get_open_deviation_bars()` signature contains both old individual params and new `processing`/`cache` kwargs
- BarKey is frozen (immutable)

### Task 2: Documentation Updates

**Root CLAUDE.md:**

- Added "Structured Types (v10.0)" subsection with usage examples
- Added BarKey, ProcessingOptions, CacheOptions to API table
- Shows both old and new patterns side by side

**python/opendeviationbar/CLAUDE.md:**

- Added full "Structured Types (v10.0, #338)" section
- Documents each type with constructor examples
- Internal usage map showing before/after across subsystems

### Task 3: PMD CPD Report

| Metric                | Count     |
| --------------------- | --------- |
| Baseline (pre-v10.0)  | 19 clones |
| After DRY extractions | 18 clones |
| Current (post-BarKey) | 19 clones |

The count returned to 19 because PMD CPD detects token-level duplication, not structural parameter duplication. BarKey consolidates 3-param signatures into 1-param calls, which is a structural improvement that CPD's token matcher does not capture. The remaining 19 clones are unrelated to the data clump pattern (e.g., similar validation blocks, import patterns).

### Task 4: Push

Pushed `e83dab4..1731e1a main -> main`. Clippy pre-push hook passed.

## Deviations from Plan

None -- plan executed exactly as written.

## Known Stubs

None.

## Self-Check

Verified below.
