Fix URL sharing

[ArnyminerZ]

Purpose

Right now, sharing URLs is broken on ICSx⁵ (lazy implementation). Also it looks like it's not the best thing in the world in the current ICSx⁵ release (#675).

Short description

Cleanup of the intent parsing logic.

Checklist

• The PR has a proper title, description and label.
• I have self-reviewed the PR.
• I have added documentation to complex functions and functions that can be used by other modules.
• I have added reasonable tests or consciously decided to not add tests.

[Copilot]

Pull Request Overview

This PR fixes URL sharing functionality by refactoring the intent parsing logic in the MainApp component. The implementation moves from lazy loading of URL data to eager parsing during navigation setup.

• Replaces LaunchedEffect-based URL extraction with direct intent parsing in the navigation destination calculation
• Adds URL parameter to the AddSubscription destination to pass parsed URL data
• Consolidates intent handling by passing the entire Intent object instead of just extras

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
MainActivity.kt	Updates MainApp call to pass entire intent and adds debug println
MainApp.kt	Refactors calculateInitialDestination to parse URLs from intent and removes LaunchedEffect
Destination.kt	Adds url parameter to AddSubscription destination

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[sunkup]

Nice ~ Feel free to merge