Models & normalization

Source: src/models.js (+ time.js, prefs.js, legacy.js).

Event fields (eventFields)

• day clamped to 0..6
• start snapped to 30-minute slots
• dur at least 30 minutes, capped so the block cannot extend past the 24h grid window
• title ≤ 80 chars; memo ≤ 300
• unknown colors → sky

Board fields (boardFields)

• name trimmed, ≤ 40 chars (fallback 시간표)
• repeatEvery via repeatWeeksOf → 0..8

Board coverage (boardCoversDate)

• One-off boards: bounded or open-ended ranges
• Repeating boards: anchor at from; active window length is original from→to span capped to one repeat cycle
• Repeating with no from: covers all dates

Time (src/time.js)

Grid origin is 06:00 (DAY_ORIGIN = 360 minutes).

• fmt(0) → 06:00
• fmt(1080) → 00:00 (next calendar day on the grid)
• plannerDate() assigns pre-06:00 wall times to the previous planner date
• nowOnGrid() drives the now line, today highlight, and todo day key

Config constants (src/config.js): SLOTS = 48, SLOT_MIN = 30, DAY_MIN = 1440, NEXT_DAY_START_SLOT = 36.

Derived helpers

• fromInstantEvents — Instant rows → UI events
• buildTodayTodos — weekday events + checked map → checklist
• pickLeastUsedColor — default color for new events
• nextBoardSortOrder / nextBoardName — tab creation

Prefs (prefs.js)

Color labels JSON, hidden colors array, defaults: weekends visible, non-compact, memos visible.