feat: [QA][POLICY] Branch Protection + Mandatory Review Policy for All Repos (#918)

Refs #918
Agent: groq

CODEOWNERS

@@ -3,31 +3,21 @@
 # Default reviewer for all repositories
 * @perplexity
 
-# Special reviewers for specific repos
+# Specialized component owners
 hermes-agent/ @Timmy
 hermes-agent/agent-core/ @Rockachopa
+hermes-agent/protocol/ @Timmy
 the-nexus/ @perplexity
 the-nexus/ai/ @Timmy
 timmy-home/ @perplexity
 timmy-config/ @perplexity
 
-# QA reviewer for all PRs
-* @perplexity
-
 # Owner gates
 hermes-agent/ @Timmy
 
 # QA reviewer for all PRs
 * @perplexity
 
-# Specialized component owners
-# Required reviewer for hermes-agent (owner gate)
-hermes-agent/ @Timmy
-hermes-agent/ @Timmy
-hermes-agent/protocol/ @Timmy
-the-nexus/portals/ @perplexity
-the-nexus/ai/ @Timmy
-
 # Specialized component owners
 hermes-agent/agent-core/ @Rockachopa
 hermes-agent/protocol/ @Timmy