Function ends_with_output

src/code_actions/extract_function.rs:654–678

Check whether the body *ends* with one or more output statements but also contains non-output setup lines (assignments, calls, etc.). This catches the common "compute then display" pattern: ```php $first = $users->first(); echo $first->name; ```

(body: &str)

/// echo $first->name;
/// ```
fn ends_with_output(body: &str) -> bool {
    let trimmed = body.trim();
    if trimmed.is_empty() {
        return false;
    }

    let lines: Vec<&str> = trimmed
        .lines()
        .map(|l| l.trim().trim_end_matches(';').trim())
        .filter(|l| !l.is_empty() && !l.starts_with("//") && !l.starts_with('#'))
        .collect();

    if lines.len() < 2 {
        return false;
    }

    // The last line must be output.
    if !is_output_line(lines[lines.len() - 1]) {
        return false;
    }

    // At least one earlier line must NOT be output (otherwise
    // `is_pure_output` already matched).
    lines[..lines.len() - 1].iter().any(|l| !is_output_line(l))
}

/// Detect when the body is a single method call or function call
/// statement (no assignment, no return).  Returns a name derived from