Task
Build `detective_score(clues_found, clues_total, time_seconds)` — a Code Detective scoring helper for the in-game UI:
1. Base score = `int(100 * clues_found / clues_total)` (percent of clues found).
2. `time_seconds <= 30` → bonus +20 (sleuth speed).
3. `30 < time_seconds <= 90` → no bonus.
4. `time_seconds > 90` → penalty -10 (overthinking).
5. Clamp final score to `[0, 100]`.
6. `clues_total == 0` → return 0 (defensive — no puzzle to solve).