Link takes to specific text blocks

[KSemenenko]

Summary

Allow users to link recorded audio files to specific blocks of text and display different takes side-by-side for comparison.

Source

• Category: Recording & Exporting
• Feedback video: https://youtu.be/IeUoMyx7dKE?t=37m38s

Acceptance criteria

• Recorded takes can be associated with specific script blocks.
• Users can compare multiple takes for the same block side-by-side.
• The association persists in local browser data without corrupting script source text.
• Add or update browser/UI test coverage for the relevant user flow.
• Solution tests pass before the issue is marked ready for user verification.

[KSemenenko]

Implemented and pushed to main in commit df3d068.

What changed:

• Recorded take exports now return file metadata back to Blazor when a recording stops or rotates to another block.
• Go Live persists take metadata in local browser storage by script/block key, separate from TPS source text.
• The recording block cue overlay now shows side-by-side take cards for the active block, including sequential take labels, file name, size, and timestamp.
• Added browser coverage for recording two takes of the same block, comparing them side-by-side, and reloading to prove persistence.

Verification passed:

• dotnet build ./PrompterOne.slnx -warnaserror --no-restore
• dotnet test --project tests/PrompterOne.Web.Tests/PrompterOne.Web.Tests.csproj --no-build -- --treenode-filter "/*/*/GoLiveSessionInteractionTests/*" --no-ansi --no-progress
• dotnet test --project tests/PrompterOne.Web.UITests.Studio/PrompterOne.Web.UITests.Studio.csproj --no-build -- --treenode-filter "/*/*/GoLiveShellSessionFlowTests/GoLivePage_RecordingBlockTakes_PersistAndCompareSameBlockSideBySide" --no-ansi --no-progress
• dotnet test --project tests/PrompterOne.Web.Tests/PrompterOne.Web.Tests.csproj --no-build -- --no-ansi --no-progress
• dotnet test --project tests/PrompterOne.Web.UITests.Studio/PrompterOne.Web.UITests.Studio.csproj --no-build -- --no-ansi --no-progress
• dotnet test @./tests/dotnet-test-progress.rsp --solution ./PrompterOne.slnx (1175/1175 passed)

Please review when ready. I left the issue open for your verification.