[huxiaoyi-ovo]

Summary

Adds a runnable Panda inverse-kinematics example with one joint locked, addressing the remaining IK documentation task in #825.

The example uses ETS.fixjoint() to lock the third joint of a seven-joint Panda arm, solves the reduced six-joint problem with ikine_LM, and verifies the recovered end-effector pose.

Validation

• Changes limited to docs/source/IK/numerical.rst (29 added lines).
• The earlier staging version passed the full cross-platform test matrix and Sphinx documentation build.
• The clean branch is based on the latest upstream main. Updated CI validation is pending.

No runtime logic or public API changes.

AI assistance: ChatGPT (GPT-6) assisted with documentation preparation and review.

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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