refactor(prompt): remove wrapJoinedMentions parameter from selectedCo…

…dePromptWithExtraFiles

This change simplifies the selectedCodePromptWithExtraFiles function by:
- Removing the optional wrapJoinedMentions parameter
- Always joining mentions with a simple space separator
- Removing the conditional wrapping of mentions with parentheses

vscode/src/commands/execute/index.ts

@@ -70,8 +70,7 @@ export async function executeDefaultCommand(
 
 export function selectedCodePromptWithExtraFiles(
     primary: ContextItem,
-    other: ContextItem[],
-    wrapJoinedMentions = true
+    other: ContextItem[]
 ): PromptString {
     const primaryMention = ps`@${PromptString.fromDisplayPathLineRange(primary.uri, primary.range)}`
     const otherMentions = other.map(
@@ -82,7 +81,5 @@ export function selectedCodePromptWithExtraFiles(
     }
 
     const joinedMentions = PromptString.join(otherMentions, ps` `)
-    return ps`${primaryMention}${
-        wrapJoinedMentions ? ps` ( ${joinedMentions} )` : ps` ${joinedMentions}`
-    }`
+    return ps`${primaryMention} ${joinedMentions}`
 }

vscode/src/prompts/prompt-hydration.ts

@@ -235,7 +235,7 @@ async function hydrateWithOpenTabs(promptText: PromptString): Promise<[PromptStr
     return [
         promptText.replaceAll(
             PROMPT_EDITOR_OPEN_TABS_PLACEHOLDER,
-            selectedCodePromptWithExtraFiles(firstOpenTab, otherOpenTabs, false)
+            selectedCodePromptWithExtraFiles(firstOpenTab, otherOpenTabs)
         ),
         [firstOpenTab, ...otherOpenTabs],
     ]