---
phase: 109-checkbox-multiselect-filters
plan: 01
completed: 2026-04-28T22:00:00+02:00
duration: same-session
---

<summary>
## Objective
Replace native multi-select boxes on `/statistics/orders` with compact checkbox dropdown controls while preserving the existing GET filter contract.

## What Was Built

| File | Purpose |
|------|---------|
| `resources/views/statistics/orders.php` | Marked `channels[]` and `status_groups[]` multi-selects for progressive enhancement. |
| `public/assets/js/modules/checkbox-multiselect.js` | Added reusable vanilla JS checkbox-dropdown enhancer. |
| `resources/views/layouts/app.php` | Loaded the new JS module with `filemtime()` cache busting. |
| `resources/scss/app.scss` | Added compact dropdown, trigger, checkbox, and open-state styles. |
| `public/assets/css/app.css` | Rebuilt compiled CSS. |
| `.paul/codebase/architecture.md` | Documented the frontend enhancement module pattern. |
| `.paul/codebase/tech_changelog.md` | Added Phase 109 technical changelog entry. |
| `C:\Users\jacek\.claude\commands\paul\plan.md` | Added codebase architecture and DB schema docs to plan context. |
| `C:\Users\jacek\.claude\paul-framework\workflows\plan-phase.md` | Added required reading/load-context instructions for codebase docs. |
| `C:\Users\jacek\.codex\paul-framework\...` | Synced Claude source framework into Codex target with `~/.codex` path adaptation. |

## Acceptance Criteria Results

| AC | Result | Evidence |
|----|--------|----------|
| AC-1 Checkbox Dropdown Behavior | PASS | Marked selects are enhanced into trigger + checkbox dropdown with "Wszystkie". |
| AC-2 Existing Filter Contract Preserved | PASS | Original selects remain in DOM with unchanged `channels[]` and `status_groups[]` names. |
| AC-3 Compact Visual Fit | PASS | SCSS defines compact 30px trigger, scrollable 200px dropdown, focus border, and subtle shadow. |
| AC-4 Progressive Enhancement | PASS | Native selects are hidden only after JS creates the wrapper and sets enhancement attribute. |

## Verification

| Check | Result |
|-------|--------|
| `npm install` | PASS |
| `npm run build:css` | PASS |
| `php -l resources\views\statistics\orders.php` | PASS |
| `php -l resources\views\layouts\app.php` | PASS |
| `node --check public\assets\js\modules\checkbox-multiselect.js` | PASS |
| `git diff --check -- ...` | PASS |
| `sonar-scanner` | PASS, task `c378ed6c-51bf-4815-acf8-b4e76ca9b9f2` |

## Deviations
- Added the requested PAUL framework sync and `paul:plan` context update during the same plan, because it was explicitly requested with implementation.
- Sonar issue lookup through public API returned `401 Unauthorized`; no SonarQube MCP tool is available in this Codex session.

## Key Patterns / Decisions
- Keep original native select controls as the source of truth for form submission.
- Apply the checkbox dropdown as progressive enhancement only after successful JS initialization.
- Treat Claude PAUL files as source and Codex PAUL files as target, with path adaptation from `~/.claude` to `~/.codex`.

## Skill Audit
- `sonar-scanner`: invoked.

## Next Phase
Phase 109 is complete. v3.3 UI Filters can be closed; next work returns to selecting a new milestone or phase from `.paul/ROADMAP.md`.
</summary>
