Replace the throwaway debug screen with the first real calendar UI and a
functional Month <-> Week switcher, on Material 3 Expressive.
Month view (S1):
- Material 3 Expressive card-per-day grid; only the current month's weeks
render (neighbouring days left blank)
- per-day event dots with "+N" overflow, today via primaryContainer
- spring-based press feedback from the active motion scheme
- swipe + drawer navigation, Loading/Failure/Success states
Week view (S2):
- vertical time schedule with overlap-resolved lanes (per-day clipping,
midnight spanning, instant events)
- all-day / multi-day events as connected horizontal spans
- single scroll container (gutter + day columns stay aligned), columns
bundled in a rounded container, noon-centred on load
- top section colour-shifts with the app bar on scroll; swipe navigation,
three states
Shared / infra:
- CalendarHost holds the active view; RootScreen renders it post-permission
- ui/common building blocks: CalendarDrawer, CalendarFailure,
ViewSwitcherPill, pastelize, observable locale, M3 Expressive slide
transition (motionScheme fastSpatialSpec)
- unit tests for the week layout (lanes, clipping, all-day spans)
- build: compileSdk 37, material3 pinned to 1.5.0-alpha21 for Expressive
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Cal.id and Event.instanceId share a numeric range, and the LazyColumn
keys both sections — colliding values (e.g. cal-id=4 + event-instance-id=4)
crashed with "Key '4' was already used". Additionally, Instances._ID is
inherited from the parent Event, so recurring events produce multiple
rows with the same instanceId; the start instant disambiguates them.
Deviation from Plan 02: changing from Cursor-returning interface to
domain-returning interface so the repository unit tests can use a simple
fake without constructing ContentObserver/Handler/Looper on the JVM
(which would either crash or no-op via the mockable.jar stubs).
Deviation from Plan 02: the JVM mockable-android.jar stubs every Cursor
method even with isReturnDefaultValues=true (returns null/0 regardless of
the underlying MatrixCursor backing). Introduce an internal ColumnReader
interface so mappers stay pure-Kotlin and JVM-testable via MapColumnReader,
while production reads through CursorColumnReader.
CalendulaApp registers the Hilt component graph. MainActivity uses
enableEdgeToEdge() and renders a centered placeholder showing app
name + tagline via CalendulaTheme. PlaceholderPreview lets the IDE
preview the layout. Resolves the pre-existing MissingClass lint
error from the manifest reference.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
CalendulaSeed (0xFF5C6B7A) anchors the design palette. Theme picks
Dynamic Color on API 31+ when enabled (default true) and falls back
to a hand-tuned Light/Dark scheme otherwise. CalendulaTypography is
the M3 Expressive default for V1 - custom type scale lands in a
later UI-design iteration.
ColorSchemeTest pins the seed value (3 unit tests, all pass).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
