fix: update CODEOWNERS to use personal account

Changed @bitwize-music-studio (organization) to @bitwize-music (user account).
CODEOWNERS requires individual user accounts or team names, not organization names.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: bitwize-music

.github/CODEOWNERS

@@ -5,11 +5,11 @@
 
 # Workflow files require manual security review
 # These files execute code in CI/CD and must be carefully reviewed
-.github/workflows/* @bitwize-music-studio
+.github/workflows/* @bitwize-music
 
 # Plugin manifest files (version changes trigger releases)
-.claude-plugin/plugin.json @bitwize-music-studio
-.claude-plugin/marketplace.json @bitwize-music-studio
+.claude-plugin/plugin.json @bitwize-music
+.claude-plugin/marketplace.json @bitwize-music
 
 # Core documentation that defines workflow behavior
-CLAUDE.md @bitwize-music-studio
+CLAUDE.md @bitwize-music

.github/SECURITY.md

@@ -17,7 +17,7 @@ We will respond within 48 hours and work with you to address the issue.
 **Workflow files execute code in CI/CD and require strict security review.**
 
 Requirements for workflow changes:
-- ✅ Must be reviewed and approved by @bitwize-music-studio
+- ✅ Must be reviewed and approved by @bitwize-music
 - ✅ Manual security audit required (no automated approval)
 - ✅ Changes must be explained in PR description
 - ❌ Do not include executable code in PR descriptions or comments