Move OpenURLAction to OpenSwiftUICore and update system handling

[Kyle-Ye]

Summary

• Move OpenURLAction, its environment storage, and related tests into OpenSwiftUICore.
• Resolve default URL actions through CoreGlue, allowing OpenSwiftUI to provide scene-aware platform routing and sensitive URL handling where supported.
• Correct completion and fallback behavior for file URLs, discarded results, explicit system handlers, and custom .systemAction results.
• Add focused core coverage for environment defaults, handler resolution, fallback selection, and completion results.

Impact

This separates core URL action behavior from platform-specific dispatch while keeping environment resolution consistent. Core-only environments now discard URLs safely when no system action is available, while configured OpenSwiftUI environments use the appropriate platform handler and provide predictable results to custom actions.

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🤖 Augment PR Summary

Summary: Moves SwiftUI-style URL opening behavior into OpenSwiftUICore while delegating the actual platform dispatch back to OpenSwiftUI via CoreGlue.

Changes:

• Relocated OpenURLAction, its environment keys, and environment resolution logic from OpenSwiftUI into OpenSwiftUICore.
• Introduced CoreGlue.defaultOpenURLAction(env:) and CoreGlue.defaultOpenSensitiveURLAction() so platform layers can supply system handlers.
• Updated OpenSwiftUIGlue to provide scene-aware URL opening on iOS/visionOS and standard dispatch on tvOS/macOS.
• Added a dedicated “has system handler” environment flag (hasSystemOpenURLAction) and enabled it in the platform-configured environment.
• Corrected completion/result mapping for custom handlers (e.g., .discarded now completes as false) and clarified fallback behavior for .systemAction.
• Adjusted sensitive URL opening to use a private LSApplicationWorkspace shim with an updated completion signature.
• Added focused core tests for defaults, handler resolution, fallback selection, and completion behavior; removed the prior OpenSwiftUI-only test.

Technical Notes: Core-only environments now safely discard URLs when no system handler is configured, while OpenSwiftUI-configured environments resolve to glue-provided system routing.

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Review completed. 1 suggestion posted.

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defaultOpenSensitiveURLAction can exit without calling completion (e.g., when LSApplicationWorkspace.default() is nil, and also in the non-iOS/visionOS #else branch), which can leave callers waiting indefinitely; consider always invoking completion(false) on these paths.

Severity: medium

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Review completed with 1 suggestions.

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When a custom action returns .systemAction but fallback is nil, this path returns without invoking completion, so direct OpenURLAction { .systemAction } use or a core-only environment leaves callers of openURL(url) { ... } waiting indefinitely instead of reporting failure. Other locations where this applies: Sources/OpenSwiftUI/Util/OpenSwiftUIGlue.swift lines 125 and 139.

Severity: medium

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[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 27 lines in your changes missing coverage. Please review.
✅ Project coverage is 26.65%. Comparing base (aac2186) to head (92a21eb).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/OpenSwiftUI/Util/OpenSwiftUIGlue.swift	0.00%	13 Missing ⚠️
...nSwiftUICore/Event/SystemEvent/OpenURLAction.swift	84.12%	10 Missing ⚠️
Sources/OpenSwiftUICore/Util/CoreGlue.swift	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #954      +/-   ##
==========================================
+ Coverage   26.56%   26.65%   +0.08%     
==========================================
  Files         732      731       -1     
  Lines       52699    52737      +38     
==========================================
+ Hits        14002    14059      +57     
+ Misses      38697    38678      -19     

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