v1.4.12

Hotfix

• Fixes legacy OpenCode config compatibility during SDD injection.

What was happening

Some existing opencode.json files still used the old agents key schema.
During SDD merge, this could prevent reliable orchestrator wiring under the current agent key model.

Fix

• Added migration in SDD JSON merge path: legacy agents is normalized into agent before overlay merge.
• Preserves existing entries and avoids overriding current agent definitions.
• Added regression test covering legacy-key migration + orchestrator presence.

Impact

Older OpenCode configs now upgrade safely during install, and /sdd-* wiring remains deterministic.