Refactor media-projection/screenshot flow and photo-reasoning into modular components

[Android-PowerUser]

Motivation

• Simplify MainActivity and ScreenCaptureService by extracting responsibilities (intents, notifications, storage, permission checks) into small, testable helpers.
• Improve reliability of MediaProjection permission flow and foreground service permission handling across API levels.
• Make photo-reasoning features (stream parsing, command parsing/execution, UI widgets, screenshot processing) more maintainable by splitting into dedicated modules.
• Improve accessibility command geometry and gesture handling with clearer error handling and dispatch callbacks.

Description

• Extracted many helpers and single-responsibility classes: MainActivityMediaProjectionIntents, MainActivityScreenshotIntents, MainActivityScreenshotFlowDecider, MainActivityStatusNotifier, NotificationPermissionPreferences, AccessibilityServiceStatusResolver, MainActivityBillingClientState, MainActivityBillingStateEvaluator, MainActivityScreenshotFlowDecider, ScreenCaptureNotificationFactory, and ScreenCaptureStorage, then wired MainActivity and ScreenCaptureService to use them.
• Reworked MediaProjection permission flow in MainActivity: centralized launch logic (launchCaptureIntent), foreground media-projection permission checks, clearer granted/denied handlers, and better flag reset behavior.
• Refactored ScreenCaptureService to use ScreenCaptureStorage and ScreenCaptureNotificationFactory, removed inline file IO/notification plumbing, and consolidated AI/network client responsibilities into dedicated files (ScreenCaptureVercelClient, ScreenCaptureApiClients, etc.).
• Large photo-reasoning feature split into many focused components under feature.multimodal: UI pieces (PhotoReasoningChatBubbles, PhotoReasoningPreviews, PhotoReasoningEntryEditor, DatabaseListPopup), view-model improvements (PhotoReasoningViewModel cleanup), chat/command pipeline utilities (PhotoReasoningHistoryBuilder, PhotoReasoningOpenAiStreamParser, PhotoReasoningScreenshotProcessor, PhotoReasoningScreenshotDebouncer, PhotoReasoningMessageMutations, PhotoReasoningCommandProcessing, PhotoReasoningCommandStateUpdater, PhotoReasoningCommandUiNotifier, PhotoReasoningCommandExecutionGuard, and PhotoReasoningScrollbar), DTOs for providers, and text/policy helpers (PhotoReasoningTextPolicies, TrialStateUiModelResolver).
• Improved ScreenOperatorAccessibilityService by moving geometry resolution into ScreenCommandGeometryResolver, consolidating gesture dispatch with callbacks, adding availability checks, and centralizing scroll/tap handling; also added safer queue/async handling for commands.
• Replaced ad-hoc shared-preference & notification logic with NotificationPermissionPreferences and MainActivityStatusNotifier to centralize and simplify state access and user feedback.

Testing

• Performed a local Gradle assemble and unit test run with ./gradlew assembleDebug and ./gradlew test. The project built successfully and unit tests completed successfully.
• Ran lint on the changed modules (./gradlew lint) to catch obvious issues and fixed findings; no blocking lint errors remained.
• Manually exercised key flows on device/emulator: requesting MediaProjection, starting/stopping the screen-capture service, taking screenshots, and basic photo-reasoning UI interactions; these flows behaved as expected during the local verification.

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Codex Task

[amazon-q-developer]

This refactoring successfully improves code organization and maintainability by extracting responsibilities into focused, testable modules. The changes follow solid engineering principles and maintain functionality while making the codebase more modular. The PR is ready for merge.

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⚠️ This PR contains more than 30 files. Amazon Q is better at reviewing smaller PRs, and may miss issues in larger changesets.

[Android-PowerUser]

/q kannst du die branchs refactor-god-classes-in-/app gegen codex/analyze-technical-debt-and-complexity-o6bm9p vergleichen und sagen ob der Code tatsächlich wartbarer geworden ist?

[amazon-q-developer]

Ja, der Code ist deutlich wartbarer geworden. This PR extracts responsibilities from god classes (MainActivity and ScreenCaptureService) into 20+ focused, single-responsibility classes. The changes include extracting media projection intents, notification handling, storage operations, and permission checks into dedicated helpers, and splitting the large photo-reasoning feature into modular components.

Key maintainability improvements:

• Separation of concerns: MainActivity reduced from handling everything to delegating to specialized classes like MainActivityMediaProjectionIntents, MainActivityScreenshotFlowDecider, and MainActivityStatusNotifier
• Testability: Small, focused classes are easier to unit test than large god classes
• Readability: Clear class names like ScreenCaptureNotificationFactory and PhotoReasoningCommandProcessing make code intent obvious
• Modularity: The photo-reasoning feature split into 15+ components under feature.multimodal allows independent modification without affecting unrelated functionality

The refactoring addresses technical debt by reducing class complexity and improving code organization. With 3009 additions and 2352 deletions across 41 files, the net increase reflects better structure rather than bloat.