Function detectTSquare

detectTSquare(aspects: Aspect[]): AspectPattern[]
Detect T-Square patterns.
Parameters
- aspects: Aspect[]
Returns AspectPattern[]
Remarks
A T-Square consists of:
- 1 opposition (180°)
- 2 squares (90°) from each end of the opposition to a common apex
Mathematical verification:
- Body A at 0°, Body B at 180° (opposition)
- Body C at 90° (apex)
- A-C = 90° (square), B-C = 90° (square) ✓
- Defined in aspects/patterns.ts:81