Fixes #issue. Add Spectre markup interop bridge package, UICatalog scenario, tuirec GIF docs, and cleanup pass

[Copilot]

• Review new @copilot PR comment and determine if code changes are required
• Check recent CI/workflow run status for the branch
• Verify docfx/API metadata configuration for Terminal.Gui.Interop.Spectre
• Reply to the PR comment with a precise answer and screenshot link if needed

[tig]

@copilot add a UICatalog scenario that shows this off.

[Copilot]

@copilot add a UICatalog scenario that shows this off.

Implemented in commit 5fac1c7.

Added a new UICatalog scenario: Spectre Markup Bridge (Examples/UICatalog/Scenarios/SpectreMarkupBridgeScenario.cs) and wired UICatalog.csproj to reference Terminal.Gui.Interop.Spectre.

Screenshot:

[tig]

@copilot use gui-cs/tuirec to record a gif of the new scenario in action and add the gif to docs/images.

[Copilot]

@copilot use gui-cs/tuirec to record a gif of the new scenario in action and add the gif to docs/images.

Done in commit bdcfb3b.

I recorded the new Spectre Markup Bridge scenario with gui-cs/tuirec and added the GIF to:
docfx/images/spectre-markup-bridge.gif

I also linked it from Examples/UICatalog/README.md.

[tig]

@copilot that video shows nothing

[Copilot]

@copilot that video shows nothing

Updated in commit 19f6877.

I re-recorded the scenario GIF with clearer, visible interaction (editing markup and re-applying) and replaced:
docfx/images/spectre-markup-bridge.gif

[tig]

@copilot see the code cleanup .md doc in ./.claude and use it on all touched files.

[Copilot]

@copilot see the code cleanup .md doc in ./.claude and use it on all touched files.

Done in commit b0636e87f.

I applied the .claude/tasks/clean-code-review.md cleanup pass across the touched source files in this PR (including target-typed new () cleanup and handler formatting normalization).

Current scenario screenshot:

[tig]

@copilot will the Api docs for the spectre intern stuff appear in the TG docs?

[Copilot]

@copilot will the Api docs for the spectre intern stuff appear in the TG docs?

Not as-is.

Right now docfx metadata is configured for Terminal.Gui.dll, Terminal.Gui.Editor.dll, and UICatalog project docs, but it does not include Terminal.Gui.Interop.Spectre, so those API types won’t appear in the published TG API docs unless we add that assembly/project to docfx/docfx.json.

Screenshot:

[tig]

Superseded by PR #5393 which consolidates #5391 and #5392 into a single interop package.