Fix tool result highlighting

[andreasjansson]

No description provided.

[Copilot]

Pull Request Overview

This PR updates tool-result handling so that results still generating are neither folded nor syntax-highlighted, and hides the ID line until generation completes.

• Renames greger--tool-placeholder to greger--tool-result-placeholder and adds a greger-tool-result-generating text property
• Adds logic in greger.el and greger-ui.el to skip folding/highlighting while a result is generating, and to clear the property on completion
• Updates existing tests to use the new placeholder function and adds a UI test for generating behavior

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
test/greger-ui-test.el	Added UI test verifying that generating tool results remain visible and unhighlighted
test/greger-test.el	Updated test code to call greger--tool-result-placeholder instead of the old placeholder
greger.el	Renamed placeholder function, applied text property, added node lookup/removal logic
greger-ui.el	Modified folding and syntax-highlighting functions to respect the generating property

Comments suppressed due to low confidence (1)

greger.el:807

• The TODO comment still refers to greger--tool-placeholder. Update it to greger--tool-result-placeholder so it matches the renamed function.

    (greger--append-tool-result-text state tool-id tool-result-text t)

[Copilot]

The test applies the greger-tool-result-generating property at buffer start, but the UI logic checks it at the tool-result node start. Tag the actual placeholder insertion range (or the tool-result node region) to ensure the generating flag is detected.

Suggested change

	;; Add the generating property to simulate a generating tool result
	(put-text-property (point-min) (1+ (point-min)) 'greger-tool-result-generating t)
	;; Add the generating property to the tool-result node region to simulate a generating tool result
	(let ((tool-result-start (search-forward "<tool.toolu_999>"))
	(tool-result-end (search-forward "</tool.toolu_999>")))
	(put-text-property tool-result-start tool-result-end 'greger-tool-result-generating t))