Can I build my own Todoist with AI?

Build a personal task management app similar to Todoist for solo use.

**Objective:** Create a clean task manager where a user can capture, organise, and complete tasks across projects with due dates and priorities.

**Target user:** A freelancer or knowledge worker who wants a simple Todoist-style app without paying for features they don't use.

**Core functionality:**
- Create, edit, and delete tasks
- Assign tasks to projects (folders)
- Set due dates and priority (P1-P4 or Low/Medium/High)
- Mark tasks complete; show completed tasks in a separate view
- Filter views: Inbox (no project), Today, Upcoming (next 7 days), Overdue
- Quick-add task from any screen

**Pages/screens:**
- Main task list (default: Today or Inbox)
- Project view (tasks filtered by project)
- Sidebar with project list and view shortcuts
- Task detail panel or modal (title, description, due date, priority, project)
- Settings: manage projects, accent colour

**User flows:**
1. User logs in and lands on Today view
2. User quick-adds a task with title + optional due date
3. User opens task detail to set project and priority
4. User marks task complete; it moves to completed list
5. User creates a new project and moves tasks into it

**UI direction:**
- Minimal, calm productivity aesthetic, lots of whitespace
- Todoist-inspired red accent (or user-chosen colour)
- Checkbox on the left of each task row
- Due dates shown as subtle pills (Today = green, Overdue = red)
- Keyboard-friendly: Enter to add, Escape to cancel

**Data model:**
- User: { id, email, name }
- Project: { id, userId, name, colour, sortOrder }
- Task: { id, userId, projectId?, title, description?, dueDate?, priority, completed, completedAt?, createdAt }

**Authentication:** Email/password or magic link, one user account per person.

**APIs/integrations:** None required for MVP. Optional email reminders in v2.

**Responsive requirements:** Must work well on mobile browser (touch-friendly checkboxes and add button).

**Error states:** Empty states for each view ("Nothing due today, nice work"); handle invalid dates gracefully.

**Deployment:** Host on AI builder default hosting with connected database.

**Explicit exclusions:** No natural language parsing, no recurring tasks, no team sharing, no push notifications, no karma/gamification.

**Suggested implementation order:**
1. Auth + database schema
2. Task CRUD and project list
3. Today / Upcoming / Overdue filters
4. Task detail panel and priority styling
5. Mobile polish and empty states