Update CLI commands to use latest versions for Amp, Claude, and Gemini executors (#140)

backend/src/executors/amp.rs

@@ -58,6 +58,7 @@ Task title: {}"#,
 
         // Use shell command for cross-platform compatibility
         let (shell_cmd, shell_arg) = get_shell_command();
+        // --format=jsonl is deprecated in latest versions of Amp CLI
         let amp_command = "npx @sourcegraph/amp@0.0.1752148945-gd8844f --format=jsonl";
 
         let mut command = Command::new(shell_cmd);

backend/src/executors/claude.rs

@@ -509,7 +509,7 @@ impl Executor for ClaudeFollowupExecutor {
         let (shell_cmd, shell_arg) = get_shell_command();
         // Pass prompt via stdin instead of command line to avoid shell escaping issues
         let claude_command = format!(
-            "npx -y @anthropic-ai/claude-code -p --dangerously-skip-permissions --verbose --output-format=stream-json --resume={}",
+            "npx -y @anthropic-ai/claude-code@latest -p --dangerously-skip-permissions --verbose --output-format=stream-json --resume={}",
             self.session_id
         );
 

backend/src/executors/gemini.rs

@@ -620,7 +620,7 @@ You are continuing work on the above task. The execution history shows what has
         comprehensive_prompt: &str,
     ) -> Result<AsyncGroupChild, ExecutorError> {
         let (shell_cmd, shell_arg) = get_shell_command();
-        let gemini_command = "npx @google/gemini-cli --yolo";
+        let gemini_command = "npx @google/gemini-cli@latest --yolo";
 
         tracing::info!(
             "Spawning Gemini followup execution for attempt {} with resume context ({} chars)",