## Feature 001: Start and complete a focus session with breaks

**Sources:** start-and-complete-a-focus-session, take-a-structured-break
**Personas:** focused-knowledge-worker, student-with-scattered-attention
**Stack span:** full-stack
**Tier:** v1

**Description:**

User can start a timed focus session, take structured breaks between sessions, and return to the next session when ready.

**Constituent tickets:**
- start-and-complete-a-focus-session
- take-a-structured-break
