fix(memory): use Homebrew for Ollama installation on macOS (#742)

Added macOS-specific branch in getOllamaInstallCommand() to use
'brew install ollama' instead of the Linux-only curl install script.

- macOS: now uses 'brew install ollama' (Homebrew)
- Linux: continues using 'curl -fsSL https://ollama.com/install.sh | sh'
- Windows: unchanged (uses winget)

Closes ACS-114

Co-authored-by: Andy <119136210+AndyMik90@users.noreply.github.com>

apps/frontend/src/main/ipc-handlers/memory-handlers.ts

@@ -212,7 +212,11 @@ function checkOllamaInstalled(): OllamaInstallStatus {
  * - Official method per https://winstall.app/apps/Ollama.Ollama
  * - Winget is pre-installed on Windows 10 (1709+) and Windows 11
  *
- * macOS/Linux: Uses official install script from https://ollama.com/download
+ * macOS: Uses Homebrew (most common package manager on macOS)
+ * - Official method: brew install ollama
+ * - Reference: https://ollama.com/download/mac
+ *
+ * Linux: Uses official install script from https://ollama.com/download
  *
  * @returns {string} The install command to run in terminal
  */
@@ -222,8 +226,13 @@ function getOllamaInstallCommand(): string {
     // This is an official installation method for Ollama on Windows
     // Reference: https://winstall.app/apps/Ollama.Ollama
     return 'winget install --id Ollama.Ollama --accept-source-agreements';
+  } else if (process.platform === 'darwin') {
+    // macOS: Use Homebrew (most widely used package manager on macOS)
+    // Official Ollama installation method for macOS
+    // Reference: https://ollama.com/download/mac
+    return 'brew install ollama';
   } else {
-    // macOS/Linux: Use shell script from official Ollama
+    // Linux: Use shell script from official Ollama
     // Reference: https://ollama.com/download
     return 'curl -fsSL https://ollama.com/install.sh | sh';
   }