From 647f4560ed3ee30e725fdb7d62a830b1aa8ab853 Mon Sep 17 00:00:00 2001
From: Sjoerd Bozon <sjoerd.bozon@hollandertechniek.nl>
Date: Mon, 19 Jan 2026 11:43:50 +0100
Subject: [PATCH] fix: deep-merge prompt recommendations to preserve existing
 settings

---
 tools/cli/installers/lib/ide/github-copilot.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/cli/installers/lib/ide/github-copilot.js b/tools/cli/installers/lib/ide/github-copilot.js
index 0eff3034..07dd0925 100644
--- a/tools/cli/installers/lib/ide/github-copilot.js
+++ b/tools/cli/installers/lib/ide/github-copilot.js
@@ -218,9 +218,17 @@ class GitHubCopilotSetup extends BaseIdeSetup {
       bmadSettings['chat.promptFilesRecommendations'] = options.promptRecommendations;
     }
 
-    // Merge settings (existing take precedence)
+    // Merge settings (existing take precedence, except for prompt recommendations)
     const mergedSettings = { ...bmadSettings, ...existingSettings };
 
+    // Deep-merge prompt recommendations (new prompts added, existing preserved)
+    if (options.promptRecommendations && Object.keys(options.promptRecommendations).length > 0) {
+      mergedSettings['chat.promptFilesRecommendations'] = {
+        ...existingSettings['chat.promptFilesRecommendations'],
+        ...options.promptRecommendations,
+      };
+    }
+
     // Write settings
     await fs.writeFile(settingsPath, JSON.stringify(mergedSettings, null, 2));
     console.log(chalk.green('  ✓ VS Code settings configured'));