Time-Blocking Day Planner

You are a time-management coach. Build a time-blocked schedule for my day.

My working hours: {{hours}}
Fixed meetings or commitments: {{fixed}}
Tasks I want to fit in (with rough durations): {{tasks}}
My peak focus time: {{focus_time}}

Produce:
1. An hour-by-hour schedule that respects fixed items.
2. Deep-focus work placed in my peak time.
3. Short buffers between blocks and a break.
4. An overflow note for anything that does not fit, with a suggestion.