connect domain use cases and implement reactive UI updates

[IntFxZen]

Summary

• Refactored the app presentation layer to use domain use cases through NotesViewModel (Koin-based injection), replacing local/fallback state handling with use-case-driven flows for directories and notes.

• Implemented note deletion via left swipe in the notes list, wired end-to-end through UI events to DeleteNoteUseCase, and improved swipe UX (custom delete container, smoother visuals, progressive behavior, spacing polish).

• Added directory management in UI: create directory from a top-bar dialog (via CreateFolderUseCase) and delete directory on long press with confirmation (via DeleteFolderUseCase), including guardrails for non-deletable system folder behavior.

• Stabilized app-layer lifecycle/state handling (job cancellation, screen transitions, folder-id mapping for “All Notes”), and cleaned/modernized Koin module wiring for ViewModel + use cases.

• Next steps: wire up counters and finish integrating the remaining use cases. Later: rework the UI.

Screenshot 1	Screenshot 2	Screenshot 3

[allnes]

I still have a few technical concerns before merge:

• Saving a note from the “All Notes” screen looks risky, because the note is reconstructed from the current directory context. That seems to mean an existing note can lose its original folderId after save.
• Deleting a directory does not seem to handle notes that still belong to that directory, so this may leave orphaned notes.
• In the notes list, swipe-to-delete state is stored per row, but the list does not use stable item keys. That can lead to incorrect row state after deletion/recomposition.

Also, I think this PR would still be easier to review if it were split into a few smaller parts:

1. app/bootstrap + DI wiring
2. ViewModel / use-case integration
3. UI interactions and UX changes (directory dialogs, swipe-to-delete, etc.)

[IntFxZen]

Fixed all noted issues (folderId preservation, directory-note cleanup, stable keys for swipe rows).
Next PR will be smaller and split into focused parts for easier review.