Compose Screen Shipper

Compose Screen Shipper

Overview

Ship new or refactored Compose screens end-to-end: UI + MVVM + navigation + previews + resources + verification, without breaking existing flows.

Workflow Decision Tree

• Architecture gate (must happen first): inspect app/src/main/java/com/xenogenics/app/MainActivity.java and determine whether UI is WebView/HTML, native Compose, or hybrid.
• If WebView-based, default to shipping screens as HTML/CSS/JS and wiring via WebView routes + JS bridge. Only add Compose if explicitly requested.
• If Compose is not present in the repo, stop and ask for guidance before introducing it.
• If the request is a new screen, implement screen + ViewModel/UiState/events (if needed) + navigation wiring.
• If the request is a refactor, preserve behavior and persistence keys; only change what the request requires.

Workflow

1) Intake and Scope

• Parse the request for: screen name, user flow, routes/args, expected states, and UI actions.
• Confirm constraints from references/project-standards.md.

2) Repo Scan

• Read references/repo-scan.md and locate Compose, theme, and navigation patterns.
• If Compose or NavGraph patterns are missing, stop and ask for the expected architecture before adding new patterns.

3) Screen Implementation

• Build a single-purpose screen composable; keep UI state in a UiState class and handle events via callbacks or ViewModel.
• Avoid mutable state in composables unless it is explicitly local UI state (e.g., transient dialog visibility).
• Use collectAsStateWithLifecycle() when observing flows.

4) Navigation Wiring

• Add routes, arguments, and deep links using the repo's existing pattern.
• Integrate the new route into the current NavGraph without breaking existing back behavior.

5) Resources and Theme Compliance

• Add all user-visible strings to strings.xml and reference them via stringResource.
• Use existing theme tokens for colors, typography, spacing, and shape.
• Only add new theme tokens when the request explicitly needs them.

6) Previews

• Provide at least one preview per major screen state (loading/empty/content/error if applicable).
• Use fake state objects for previews only; do not introduce runtime stubs.

7) Verification

• Run the project build or tests (prefer ./gradlew :app:assembleDebug) and fix issues until green.
• Report any remaining warnings with rationale.

8) Output

• Provide a concise change log with file paths touched and why.

Guardrails and Quality Bar

• No placeholders, TODOs, or dead buttons.
• All visible controls are wired to events/callbacks.
• Do not add new dependencies without explicit justification.
• Do not change applicationId or package names.
• Do not delete existing routes or screens.
• Do not restyle unrelated screens.

References

• references/project-standards.md
• references/repo-scan.md
• references/navigation-patterns.md
• references/theme-map.md
• references/golden_screen_example.kt

Golden Path Pointers

• Entry point: app/src/main/java/com/xenogenics/app/MainActivity.java
• Web UI: app/src/main/assets/www/index.html, app/src/main/assets/www/script.js, app/src/main/assets/www/style.css

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