Build a time-blocked schedule for tomorrow

Create a time-blocked schedule for {{day}}.

Fixed events (cannot move):
{{fixed_events}}

Tasks I want to do, with estimates if known:
{{tasks}}

My day runs from {{start_time}} to {{end_time}}. My energy pattern: {{energy_pattern}}

Scheduling rules:
- Place the single most important task first in my best energy window.
- Group shallow work (email, admin, quick replies) into one or two batches.
- Add a 10-minute break after every 90 minutes of focused work and a proper lunch break.
- Leave at least 30 minutes of unallocated buffer.
- Add 25% to my time estimates when they look optimistic, and tell me which ones you changed.
- If everything does not fit, list what is cut and why instead of cramming it in.

Output format: a table with columns Time | Block | Type (deep, shallow, meeting, break, buffer). After the table, give a 3-line "If the day goes off track" fallback plan.