Release v0.2.0: integrate IEC 61850 engineering workbench

[masarray]

Purpose

Integrate the validated v0.2.0 IEC 61850 engineering workbench onto the current main without regressing newer mainline work.

Provenance

• current main parent: f39a406aebc285f23726307670fd1c186b7ecf11
• validated simulator parent: 7093aad60e2c9d4ab4023a8166c8524df1f83453
• exact release candidate before simulator-parent merge: f50a3aea1f1748298cf7e3a18e813519e81e41d8 — 18/18 workflows successful
• integration merge commit: 28643ecb566b16bed88a49dc839afe3b11f2bf32

The integration tree was built from current main and overlays the simulator changes from their common ancestor. Only overlapping files were resolved explicitly; main-only changes remain preserved.

Gate

Keep this PR Draft until the exact integration-head CI matrix is green. Do not release from the old diverged simulator PR path.

[masarray]

Final integration gate

Authoritative integration head: 28643ecb566b16bed88a49dc839afe3b11f2bf32.

This commit has:

• current main as first parent;
• validated simulator merge 7093aad60e2c9d4ab4023a8166c8524df1f83453 as second parent;
• behind=0 against current main;
• explicit overlap resolution;
• zero vendor-keyword hits in the PR added-content audit.

Keep Draft until the exact-head integration matrix is fully successful.