Study timer with a log

Use with: build-web-app. Resume line when done: Built {project_name}, a study timer with a session log — live at {url}

Brief

A timer for study sessions plus a plain log of what each session covered. Pick a subject from your own course list, start the timer, and when it ends write one line about what you did. The log is the point; the timer exists to make you write the line. Sessions persist across reloads (localStorage is fine), and a totals view shows hours per subject.

Personalize

• Your subjects. This term's courses, from your timetable, with the one you avoid at the top of the list where you have to see it.
• Your session length. Time three of your study sessions before building anything and set the default to what you measured. If you focus for 35 minutes, the default is 35.
• The log line. Decide what one honest line looks like ("did problems 4 to 9, stuck on 7") and show your best past lines as the placeholder text.

Milestones

1. Model in the README: what is a session (subject, duration, the line), and what the log shows before the first one.
2. Timer with your subjects, deployed. Ugly is fine.
3. Session end prompts for the log line and saves the session; log survives a reload; empty state designed.
4. The log view: sessions listed by day, editable and deletable, because typos in your own history grate.
5. Totals per subject for the week, plus the abandoned-session case: a timer closed early either logs honestly as partial or discards, your rule.
6. Two weeks of real studying through it. Final README quoting your own log as evidence.

Done means

• Live URL responding; sessions survive a reload
• Every completed timer produced a logged line
• Edit and delete work on log entries; empty state is designed
• Two weeks of real sessions in the log, cited in the README
• At least 10 commits across at least 7 distinct days, authored by you
• SESSIONS.md has an entry per session, written by you