Add image attachment support to Text

[Kyle-Ye]

Summary

• Add Text.init(_ image:) for embedding images in text.
• Support Image interpolation in LocalizedStringKey.
• Resolve image attachments through text storage, including named-image auxiliary metadata.

[augmentcode]

🤖 Augment PR Summary

Summary: This PR adds support for embedding images directly into Text and localized string interpolations.

Changes:

• Introduces Text.init(_ image: Image) backed by a new attachment-based text storage
• Adds LocalizedStringKey.StringInterpolation.appendInterpolation(_ image: Image) to allow "... \(Image)" usage
• Resolves attachments through AnyTextStorage, with a widget/metadata path via .writeAuxiliaryMetadata and named-image resolution
• Adds tests for equality behavior and attachment resolution to the object replacement character

Technical Notes: Attachment resolution uses ImageResolutionContext and can emit a named-image attachment when auxiliary metadata is requested.

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[augmentcode]

Review completed. 1 suggestion posted.

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[augmentcode]

Sources/OpenSwiftUICore/View/Text/Text/Text+Image.swift:L96: image.resolveNamedImage(in:) internally calls resolve(in:); when it returns nil (e.g., missing named asset) the fallback path resolves again, which can duplicate the external warning log and do the resolution work twice on the error path.

Severity: low

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[codecov]

Codecov Report

❌ Patch coverage is 73.80952% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 26.36%. Comparing base (94b21c0) to head (581f1e0).

Files with missing lines	Patch %	Lines
...es/OpenSwiftUICore/View/Text/Text/Text+Image.swift	73.80%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #941      +/-   ##
==========================================
+ Coverage   25.68%   26.36%   +0.67%     
==========================================
  Files         722      723       +1     
  Lines       51190    51232      +42     
==========================================
+ Hits        13150    13506     +356     
+ Misses      38040    37726     -314     

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