Fix three bugs preventing ralph from running

- Rename ralph-loop.js → .cjs so consuming projects with
  "type": "module" in package.json don't break require() calls
- Unset CLAUDECODE env var to prevent "nested session" rejection
  when ralph:start is run from within a Claude Code terminal
- Fix missing && between env exports and cd in screen command;
  export was eating the path as an invalid identifier, aborting
  the chain before node could start

Author: Developer

scripts/ralph-loop.js scripts/ralph-loop.cjsscripts/ralph-loop.js renamed to scripts/ralph-loop.cjs

@@ -174,9 +174,14 @@ function truncate(str, maxLen) {
 
 function runClaude(claudeArgs, logger) {
   return new Promise((resolve, reject) => {
+    // Remove CLAUDECODE to prevent "nested session" detection when Ralph
+    // is started from within a Claude Code terminal
+    const env = { ...process.env };
+    delete env.CLAUDECODE;
+
     const proc = spawn("claude", claudeArgs, {
       stdio: ["inherit", "pipe", "pipe"],
-      env: { ...process.env },
+      env,
     });
 
     let output = "";

src/Commands/StartCommand.php

@@ -65,7 +65,7 @@ public function handle(SessionTracker $tracker, ScreenManager $screenManager): i
         // Build the ralph-loop command
         /** @var string|null $configScriptPath */
         $configScriptPath = config('ralph.script_path');
-        $scriptPath = $configScriptPath ?? dirname(__DIR__, 2).'/scripts/ralph-loop.js';
+        $scriptPath = $configScriptPath ?? dirname(__DIR__, 2).'/scripts/ralph-loop.cjs';
         $loopCmd = $this->buildLoopCommand($scriptPath, $prompt, $name, $iterations, $sessionId);
 
         // Foreground (--once) mode
@@ -95,7 +95,8 @@ public function handle(SessionTracker $tracker, ScreenManager $screenManager): i
         $this->components->info("Starting ralph session '{$name}'...");
 
         $envExports = $this->buildEnvExportString();
-        $screenCmd = "{$envExports} cd {$workingDir} && {$loopCmd}";
+        $parts = array_filter(['unset CLAUDECODE', $envExports, "cd {$workingDir}", $loopCmd]);
+        $screenCmd = implode(' && ', $parts);
 
         $screenManager->start($name, $screenCmd, $workingDir);