Replace @k-bieniek with @ElizaVetaFomka in CODEOWNERS

[omaiesh]

Summary

• Replace @k-bieniek with @ElizaVetaFomka as code owner for /instructions/, /docs/, /plans/, and /*.md

Test plan

• Verify @ElizaVetaFomka GitHub handle exists and is correct
• Verify PR approval requirements work correctly after merge

🤖 Generated with Claude Code

[github-actions]

Rosetta Triage Review

Summary: This PR updates .github/CODEOWNERS to replace @k-bieniek with @ElizaVetaFomka as a code owner for /instructions/, /docs/, /plans/, and /*.md paths, while keeping @scappuccino-grid and @YevheniiaLementova as co-owners.

Findings:

• Change is focused and minimal (4 lines changed, 1 file)
• All four affected ownership rules are updated consistently
• Other ownership rules (docs/web/, .github/, /tools) are untouched
• No code, tests, or documentation content is modified
• PR body includes a test plan with verification steps for the new handle

Suggestions:

• Confirm that @ElizaVetaFomka has accepted their GitHub organization membership invite and has the required repo access before merging, so that CODEOWNERS approval requests route correctly

Automated triage by Rosetta agent