refactor: update skill paths to use .agents/skills/ for consistency and remove obsolete skill references

.opencode/skills/index.md

@@ -1,31 +1,12 @@
-# OpenCode Skills Index
+# OpenCode Skills Compatibility
 
-Skills available to the workspace agent.
+OpenCode CLI discovers the shared skills from `.agents/skills/`.
 
----
+Do not mirror skills into `.opencode/skills/`; duplicate skill names create warnings and ambiguous discovery.
 
-## Generic Skills
-
-- [Workspace Memory Curation](workspace-memory-curation/SKILL.md)
-- [Professional Communication](professional-communication/SKILL.md)
-- [Status Reporting](status-reporting/SKILL.md)
-- [AI Prompt Engineering](ai-prompt-engineering/SKILL.md)
-
----
-
-## Fidelity / iOS Skills
-
-- [Copilot Prompt Engineering](copilot-prompt-engineering/SKILL.md)
-- [iOS Swift Answering](ios-swift-answering/SKILL.md)
-- [iOS Testing Strategy](ios-testing-strategy/SKILL.md)
-- [SwiftUI Expert Skill](swiftui-expert-skill/SKILL.md)
-- [SwiftUI XFlow Review](swiftui-xflow-review/SKILL.md)
-- [Update SwiftUI APIs](update-swiftui-apis/SKILL.md)
-
----
-
-## Related
+Use:
 
+- [Shared Skills Index](../../.agents/skills/index.md)
 - [Tooling Map](../../agent-memory/maps/tooling.md)
 - [Commands Index](../commands/index.md)
 - [Prompts Index](../../prompts/index.md)