fix(project): normalize Windows recording asset paths

[yashranaway]

opening a project recorded on windows on a mac or linux box can't find its media. the loader already converts backslash paths in the recording metadata, but when the path was already relative it built the fixed string and then threw it away. keyboard sidecar paths also skipped the check, so a moved project lost its keyboard overlay even when everything else resolved.

it keeps the converted path now and runs the same check on keyboard paths. three tests load metadata with both separators and read the files back. they fail on main.

🤖 Generated with Claude Code

Confidence Score: 5/5

The PR appears safe to merge; no blocking issues were found.

Summary

This PR keeps converted Windows asset paths when loading a project and applies the same conversion to keyboard files.

• Recording projects resolve media and keyboard files from their current folder.

_{Reviews (2) · Last reviewed commit: "fix(project): normalize Windows recordin..." · Reviewed by Greptile}

[yashranaway]

@greptileai review

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