V59 CLOVER / TEARDROP SECONDARY DEFORMATION

What changed
- Keeps the V58 patch-flattening and brush-mask reconstruction workflow.
- Replaces the ring/halo-style secondary field with a clover-like petal field.
- The generated secondary deformation is now composed of:
  * one dominant petal on the physically favored side
  * one weaker partner petal on the opposite side
  * two opposite-sign petals near the along-strike ends
- Petals are asymmetric (teardrop-like), not perfect circles.

Fault-sense branching
- Reverse/thrust-like: dominant uplift petal + weaker uplift partner, with opposite-sign end petals.
- Normal-fault-like: dominant subsidence petal + weaker subsidence partner, with opposite-sign end petals.

Why
- The user-provided target pattern is not a uniform band around the fault.
- The desired geometry is closer to a rounded clover / teardrop-leaf pattern tied to the fault orientation.

Operational notes
- Press F in stamp mode to flatten already existing direct patches if needed.
- Press G to rebuild the automatic secondary deformation using the new petal model.
- If the side sense is flipped, use D and then G again.
