fix(claude-code): allow goose to run inside a Claude Code session (#7232)

Signed-off-by: Adrian Cole <adrian@tetrate.io>

crates/goose/src/providers/claude_code.rs

@@ -269,6 +269,8 @@ impl ClaudeCodeProvider {
     fn build_stream_json_command(&self) -> Command {
         let mut cmd = Command::new(&self.command);
         configure_subprocess(&mut cmd);
+        // Allow goose to run inside a Claude Code session.
+        cmd.env_remove("CLAUDECODE");
         cmd.arg("--input-format")
             .arg("stream-json")
             .arg("--output-format")