chore: migrate .gemini to .agents and update CODEOWNERS (#4853)

Author: kislaykishore

.gemini/config.yaml .agents/config.yaml.gemini/config.yaml renamed to .agents/config.yaml

@@ -262,7 +262,7 @@ When introducing a new integration test suite, you **MUST** register the package
 ### 5.4 PR Creation & Skill Delegation
 After formatting verification passes successfully:
 1. Generate a concise, high-quality summary of changes and pull request fields (Title with Conventional Commits structure, e.g., `test(operations): add directory operations test`).
-2. **Invoke GCSFuse PR Skill**: Delegate the PR publishing task to GCSFuse's central **Pull Request Creation Skill** by loading and strictly executing the steps laid out in [.gemini/skills/pull-request/SKILL.md](../../../.gemini/skills/pull-request/SKILL.md).
+2. **Invoke GCSFuse PR Skill**: Delegate the PR publishing task to GCSFuse's central **Pull Request Creation Skill** by loading and strictly executing the steps laid out in [.agents/skills/pull-request/SKILL.md](../../../.agents/skills/pull-request/SKILL.md).
 
 ---
 

.gemini/skills/build/SKILL.md .agents/skills/build/SKILL.md.gemini/skills/build/SKILL.md renamed to .agents/skills/build/SKILL.md

@@ -1,6 +1,6 @@
 # These owners will be the default owners for everything in
 # the repo.
 *           @GoogleCloudPlatform/gcsfuse-codeowners
-.gemini @alleaditya @thrivikram-karur-g @PranjalC100 @meet2mky @anushka567 @vipnydav @GoogleCloudPlatform/gcsfuse-codeowners
+.agents @alleaditya @thrivikram-karur-g @PranjalC100 @meet2mky @anushka567 @vipnydav @GoogleCloudPlatform/gcsfuse-codeowners
 perfmetrics/scripts/ @meet2mky @GoogleCloudPlatform/gcsfuse-codeowners
 tools/ @meet2mky @GoogleCloudPlatform/gcsfuse-codeowners