🧹 Refactor paste method to improve readability by extracting OS-specific logic

[undivisible]

🎯 What: The code health issue addressed
The paste function in src/lib.rs was overly long (100+ lines) and complex, primarily because it directly embedded lengthy, heavily nested, OS-specific logic for Windows and macOS directly in the method body.

💡 Why: How this improves maintainability
Extracting the Windows and macOS logic into their own dedicated, conditionally compiled functions (windows_native_paste and macos_native_paste) reduces the size of the paste method drastically. It makes the main paste function much easier to read (it now simply acts as a dispatcher to OS-specific handlers) and isolates the platform-specific code, making future changes or debugging on specific platforms easier.

✅ Verification: How you confirmed the change is safe

• Extracted code functionally exactly matches the original inline code.
• Passed cargo check and cargo fmt.
• Passed cargo clippy.
• Ran full test suite via cargo test which confirmed no functionality was broken.
• Requested review from AI agent which gave a "Correct" rating.

✨ Result: The improvement achieved
The paste method is now clean, readable, and small, effectively delegating to well-named helper functions to handle the actual logic for macOS and Windows, resolving the "overly long function" code health issue.

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PR created automatically by Jules for task 9147010404471194839 started by @undivisible

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Note

Low Risk
Pure refactor with no behavioral change to clipboard or synthetic keyboard input; Linux paste was already externalized the same way.

Overview
Refactors native paste so NativeRuntime::paste matches the existing Linux pattern: it only dispatches to OS-specific helpers instead of embedding large inline blocks.

macOS logic moves to macos_native_paste (accessibility check, pbcopy, Cmd+V via mac_post_key). Windows logic moves to windows_native_paste (clipboard Unicode setup and Ctrl+V via SendInput). Behavior is unchanged—code was relocated, not rewritten.

tests/cli.rs fixes indentation on the stdin write_all block in the CLI test helper.

^{Reviewed by Cursor Bugbot for commit 77f466c. Configure here.}

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