Chat: Sort recent files above tools (microsoft#255950) (microsoft#256026)

* Chat: Sort recent files above tools (microsoft#255950)

* explain

Author: bpasero

.github/instructions/typescript.instructions.md

@@ -9,6 +9,7 @@ You MUST check compilation output before running ANY script or declaring work co
 1. **ALWAYS** check the "Core - Build" task output for compilation errors
 2. **ALWAYS** check the "Ext - Build" task output for compilation errors
 3. **NEVER** run tests if there are compilation errors
+3. **NEVER** use `npm run compile` to compile TypeScript files, always check task output
 4. **FIX** all compilation errors before moving forward
 
 ## TypeScript compilation steps

src/vs/workbench/contrib/chat/browser/contrib/chatInputCompletions.ts

@@ -876,7 +876,7 @@ class BuiltinDynamicCompletions extends Disposable {
 			const labelDescription = description
 				? localize('fileEntryDescription', '{0} ({1})', uriLabel, description)
 				: uriLabel;
-			const sortText = description ? 'z' : '{'; // after `z`
+			const sortText = ' '; // keep files always at the top
 
 			return {
 				label: { label: basename, description: labelDescription },