feat: improve Study by card state or tag dialog

[Akira2206]

Note

Logic and documentation assisted by Gemini 3 Flash.

Purpose / Description

Improves the "Study by card state or tag" dialog and implements filtering of tags.

Fixes

• Fixes Improve the Study by card state or tag dialog #20601

Approach

• Added a title to the input dialog using AlertDialog.Builder.title(), affecting all custom study sub-dialogs
• Removed the "Select x cards from the deck" label
• Implemented dynamic hints in TextInputLayout that switch between "Number of days" and "Number of cards" based on the ContextMenuOption
• Called selectAll() in a post {} block within the input dialog to improve text selection behavior
• Changed positive button labels to "Create" in CustomStudyDialog and "Confirm" in TagsDialog
• Integrated a red error state in TextInputLayout and dynamic isEnabled updates for the positive button when findNotes returns zero results
• Added a tag selection button that mimics the Note Editor's tag box
• Updated TagsDialogViewModel to accept a filterQuery, ensuring the TagsDialog only displays tags available for the selected CustomStudyCardState
• Implemented an intersection check during card state changes to retain valid tags in viewModel.selectedTags while removing unavailable ones
• Added logic in the doAfterTextChanged listener to sanitize numeric input and prevent leading zeros

How Has This Been Tested?

WhatsApp.Video.2026-04-22.at.05.11.48.mp4

Screenshots of affected dialogs

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[github-actions]

Important

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[criticalAY]

CI is failing

[Akira2206]

I ran ./gradlew ktlintCheck and ./gradlew jacocoUnitTestReport. The unit tests and lint are passing, but codecov check is failing

[criticalAY]

I didn't like the UI, it doesnt go withh the current dialog UI

[Akira2206]

I have updated the tag selection UI to use a ChipGroup for selected tags. Here is a video for the interaction:

WhatsApp.Video.2026-04-25.at.14.41.13.mp4

And images of the dialog in different themes:

[ZornHadNoChoice]

Looks great!

However, I think it'd be even better if it was more compact. For starters, the vertical spacing between the chips could be smaller. Also, the crosses aren't really necessary since the user can use the edit button.

[Akira2206]

Hope it's better now

WhatsApp.Video.2026-05-02.at.15.29.02.mp4

[ZornHadNoChoice]

It's better, yes, but can we do anything about the edit button? It's eating up half of the space. Perhaps, tapping anywhere on the "ChipGroup" can open the tag dialog instead?

[Akira2206]

Actually the edit button isnt taking up any space here

Because it's a FrameLayout, the chips group and the text box are layered on top of each other.
I had set a 40dp padding so chips don't overlap the edit pencil button, so the reason why you see so much space is simply because the third tag didn't fit inside the remaining space

Earlier this was set to 36dp which i changed to 40dp because I felt the chips were getting too close
These are ss from 36dp one for comparison:

That being said I can completely remove the edit icon and just make the chips/box clickable to open the dialog as well if that's better

[ZornHadNoChoice]

I'm in favor of removing it.

[Akira2206]

done, clicking either the chips or inside the outline box opens the tags dialog