Kanban Card User Filter — Kanban Card User Filter

Kanban Card User Filter enhances your Basecamp Kanban board with powerful filtering and organization tools.

Features:
- Filter cards by assignee, priority, project, cycle, and date range
- Search cards by title
- Tag system with configurable formats: [square], (round), or {curly} brackets
- Story point badges with automatic total calculation
- Priority badges with customizable regex patterns, labels, and colors
- Project and cycle label badges
- CSV export for reporting (Card ID, Title, Story Points, Categories, Assignee)
- Per-board filter persistence across page navigations
- Open card details in an inline iframe or navigate directly
- Dark mode support

How to use:
1. Navigate to any Kanban board on 3.basecamp.com
2. Use the filter dropdowns and search box injected into the board header
3. Click the extension icon to configure tag patterns, priorities, and preferences

Tag format example:
A card titled "[3] [P1] [ProjectX] Fix login bug" will display badges for story points (3), priority (P1/High), and project label (ProjectX).

This extension only runs on https://3.basecamp.com and requires no data collection. Your settings sync across devices via browser storage.