Files
eng-pad/PROGRESS.md
Kyle Isom 0b53023a25 Implement Phase 1: project skeleton and data layer
Android project with Kotlin, Jetpack Compose, and Room. Includes:
- Gradle build system with version catalog, foojay JDK resolver, lint config
- Room entities (Notebook, Page, Stroke) with packed float BLOB encoding
- DAOs and repositories for all entities
- Unit tests for blob roundtrip and PageSize enum (10 tests, all passing)
- Minimal Application class and stub MainActivity

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-24 14:03:57 -07:00

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# PROGRESS.md — eng-pad Implementation Progress
This file tracks completed work and decisions. Updated after every step.
See PROJECT_PLAN.md for the full step list.
## Completed
### Phase 0: Project Documents (2026-03-24)
- [x] 0.1: Created DESIGN.md — full technical design covering architecture,
data model, coordinate system, rendering, input handling, and source tree.
- [x] 0.2: Created PROJECT_PLAN.md — discrete steps grouped by phase with
checkboxes and file references.
- [x] 0.3: Created PROGRESS.md — this file.
- [x] 0.4: Updated CLAUDE.md — build commands, source tree, project doc
pointers.
### Phase 1: Project Skeleton + Data Layer (2026-03-24)
- [x] 1.1: Generated Android project — Gradle 8.14.2, AGP 8.10.1, Kotlin 2.1.20
- [x] 1.2: Version catalog with Compose BOM 2026.03.00, Room 2.8.4,
Navigation 2.9.7, Lifecycle 2.10.0
- [x] 1.3: Lint configured — warningsAsErrors, AGP version check suppressed
(AGP 9.x needs Gradle 9.x)
- [x] 1.4: Room entities: Notebook, Page, Stroke, PageSize enum
- [x] 1.5: Converters: FloatArray ↔ ByteArray (packed little-endian)
- [x] 1.6: DAOs: NotebookDao, PageDao, StrokeDao
- [x] 1.7: EngPadDatabase (Room, version 1)
- [x] 1.8: NotebookRepository, PageRepository
- [x] 1.9: Unit tests: StrokeBlobTest (6 tests), PageSizeTest (4 tests) — all pass
- Foojay resolver added for automatic JDK toolchain download
- compileSdk/targetSdk bumped to 36 (required by latest androidx dependencies)
## In Progress
Phase 2: Notebook List Screen
## Decisions & Deviations
- **Language**: Kotlin (chosen over Java for better Compose/coroutine support).
- **Storage**: Room/SQLite with packed float BLOBs for stroke points.
- **Palm rejection**: Hardware only (EMR digitizer handles it).
- **Pressure sensitivity**: None — two fixed pen sizes (0.38mm, 0.5mm).
- **Coordinate system**: 300 DPI canonical points (scaled to 72 DPI for PDF export).
- **UI framework**: Compose for chrome, custom View for canvas (Compose
Canvas lacks MotionEvent access needed for stylus input).