Todo Panel — Category management (create, rename, delete, empty toggle, JIRA) #51

Parent

#44

What to build

Full category CRUD: create, rename, delete with guard, empty-category visibility toggle, and JIRA link on categories.

State machine: todoStore gains:

• createCategory() — creates with a default name ("New Category") and random color, appended at the end
• renameCategory(categoryId, name) — updates the name
• setCategoryColor(categoryId, color) — updates the color
• setCategoryJiraLink(categoryId, jiraLink) — sets/clears the JIRA link
• deleteCategory(categoryId) — only succeeds if the category has zero items with status todo or in-progress. Returns error otherwise.

UI:

• "+" button at the top of the category list to create a new category
• Double-click a category header to rename (inline text input, Enter saves, Escape cancels)
• Right-click context menu on category header with "Delete" option (greyed out if category has active items). Delete shows a confirm dialog.
• Category JIRA link: if set, displays as a clickable ticker/number extracted from the URL. Edit via context menu or detail.
• Color picker (simple palette or hex input) in context menu.
• Empty categories toggle: a small toggle button somewhere at the top hides categories with zero active items (todo or in-progress). Categories with only done items still count as empty for this toggle.

Acceptance criteria

• "+" button at top of list creates a new category with default name and random color
• Double-click category header opens inline rename input; Enter saves, Escape cancels
• Right-click category header shows context menu with Rename, Color, JIRA Link, Delete options
• Delete is greyed out / blocked if category has active (todo or in-progress) items
• Confirm dialog before deleting a category
• JIRA link displays as clickable ticker/number (not raw URL) when set
• JIRA link can be set/cleared via context menu
• Color can be changed via context menu (simple color palette or hex input)
• Empty categories toggle hides categories with zero active items; toggle state is local (not persisted)
• Category with only done items counts as "empty" for the toggle
• Unit tests: createCategory, deleteCategory guard, renameCategory
• bun fmt, bun lint, bun typecheck all pass

Blocked by

• Todo Panel — Read-only categories from JSON persistence #46