Blender Control Rig for Simple Rigid-Skinned Low-Poly Character

Title: Blender Control Rig for Simple Rigid-Skinned Low-Poly Character Description: I have a simple low-poly character in Blender that is already rigged and rigid skinned to an existing FK skeleton. The skeleton is simple: * 3 bones per arm/hand side * 3 bones per leg side * hip bone * torso bone * head bone * no facial rig needed I need an animator-friendly control rig added on top of the existing skeleton. The important requirement is that the existing joint/head positions and vertex-to-bone assignments must stay the same. The character is rigid skinned, and I do not want the skinning/vertex assignments changed. Bone tails, bone roll/local axes, and bone names can be changed if needed for the control rig. What I want added: * IK controls for legs * hand/arm controls if practical * pole targets for knees and elbows * hip/body control * torso control * head control * visible, easy-to-select control shapes * clean organization * constraints set up so the control rig drives the existing skeleton Deliverables: * updated Blender file with the control rig * original joint/head positions preserved * original vertex-to-bone assignments preserved * short screen recording demonstrating the rig Please show the rig doing: * crouch pose * walking/stepping pose * arms raised * head rotation * elbows and knees bending correctly * reset/default pose Please include examples of previous Blender rigging/control rig work.