## Story 006: Sound notification at session end

**Persona:** Jordan, 29, open-plan office, needs to know when a session ends but can't have a loud alarm. They want a subtle audio cue that breaks through ambient office noise without startling colleagues.

**Situation:**

Jordan's focus session ends while they are deep in thought, earbuds in. They need a notification they won't miss, but they can't blast an air horn in a shared space.

**Need:**

As Jordan, I want a configurable audio notification when my session ends, so that I know to transition to my break without checking the screen constantly.

**Acceptance:**
- I can enable or disable the audio notification in settings
- If enabled, it plays when the session ends
- The default notification is clear but not aggressive (not a alarm-clock blast)
- I can potentially choose between a few notification sounds

**Tier:** enrichment

**Confusion-flags:**
- Should the notification play even if the app is backgrounded? (Probably yes, which means permissions.)
- Does the user mute the app, or does the app respect device volume/mute state?
