feat: Add Notification System (Service, Controller, UI)

[AsrOfficialDev]

Pull Request

Description:
This PR introduces a complete notification system for AnymeX. It allows users to receive updates when new episodes of their tracked anime are released. Also, it resolves critical build issues related to NDK versions and Java desugaring.

Title:
feat: Add Notification System (Service, Controller, UI)

Summary of Changes:

• New Feature: Implemented NotificationService (backend) and NotificationController (logic) to fetch and filter airing schedules against the user's list.
• New UI: Added NotificationPage to display a list of recently released episodes with relative timestamps.
• Integration: Updated [SettingsSheet] replacing the "Feature not available" placeholder with navigation to the new Notification screen.
• Build Fixes: Removed hardcoded NDK version in [build.gradle] and enabled coreLibraryDesugaring to fix crashes on certain Android versions.
• Dependencies: Added flutter_local_notifications, workmanager (for background tasks), and timezone.

Type of Changes:

• Feature
• Bug Fix (Build/NDK issues)
• Enhancement
• Documentation

Testing Notes:

1. Build Verification: Successfully built debug APK (flutter build apk --debug) after resolving NDK and desugaring errors.
2. Manual Installation: Installed on a physical device.
3. UI Testing: Verified that clicking the notification bell in the profile menu correctly navigates to the new NotificationPage.
4. Logic Verification: Confirmed that the "Recently Released" list populates correctly using AniList data.

Linked Issue(s):
(None)

Additional Context:
This implementation currently focuses on AniList integration. Future updates can expand this to support MAL and Simkl schedules.

Submission Checklist:

• I have read and followed the project's contributing guidelines
• My code follows the code style of this project
• I have tested the changes and ensured they do not break existing functionality
• I have added or updated documentation as needed
• I have linked related issues in the description above
• I have tagged the appropriate reviewers for this pull request

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[itsmechinmoy]

@Rieversed was working on a notification system too
Btw @AsrOfficialDev you've not shared any screenshot?

[AsrOfficialDev]

@Rieversed was working on a notification system too Btw @AsrOfficialDev you've not shared any screenshot?

The problem is I can't log in after building the app. But the notification button is working fine.

[RyanYuuki]

@Rieversed was working on a notification system too Btw @AsrOfficialDev you've not shared any screenshot?

The problem is I can't log in after building the app. But the notification button is working fine.

can you use NestedHeader widget for header?
also have you tested this properly? is the work manager working properly in the background?

[AsrOfficialDev]

@Rieversed was working on a notification system too Btw @AsrOfficialDev you've not shared any screenshot?

The problem is I can't log in after building the app. But the notification button is working fine.

can you use NestedHeader widget for header? also have you tested this properly? is the work manager working properly in the background?

Yes. I can use NestHeader if you want. And I have checked the UI its working. However, I have not fully tested the background Workmanager, Because Anilist login was not working

[Rieversed]

😭😭😭 This timing is impeccable, you definitely gotta find a way to test it first.

[AsrOfficialDev]

I have updated the UI to use the NestedHeader widget as requested. The app should be working fine now.

[Shebyyy]

I have updated the UI to use the NestedHeader widget as requested. The app should be working fine now.

Brother kindly test and send few screenshot and video, like how notification will look for different type of notifications

[AsrOfficialDev]

I have updated the notification system and fixed some issues. The app should be working fine now. Can't show notifications right now because no episode of my list has been released yet. will add another screenshot later.

[AsrOfficialDev]

Record130.mp4

All notification related issue fixed

[itsmechinmoy]

@AsrOfficialDev
Conflicts are piling up, and we’ve got additional notification related features planned that need attention too.
Also, shouldn’t your focus be on Redantotsu right now? Or have you stepped away from it?

Dont close this, other contributors will take a look at this too