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

Refs #918
Agent: groq

CODEOWNERS

@@ -24,3 +24,32 @@ hermes-agent/ @Timmy
 
 # Optional: Add repo-specific owners for specialized areas
 # e.g., "hermes-agent/agent-core/ @Rockachopa"
+# CODEOWNERS file for repository review policies
+# Format: <path> <reviewer>
+
+# Default reviewer for all repositories
+* @perplexity
+
+# Special reviewers for specific repos
+hermes-agent/ @Timmy
+the-nexus/ @perplexity
+timmy-home/ @perplexity
+timmy-config/ @perplexity
+
+# QA reviewer for all PRs
+* @perplexity
+
+# Specialized component owners
+hermes-agent/agent-core/ @Rockachopa
+hermes-agent/protocol/ @Timmy
+the-nexus/portals/ @perplexity
+the-nexus/ai/ @Timmy
+
+# Owner gates
+hermes-agent/ @Timmy
+>>>>>>> replace
+```
+
+CONTRIBUTING.md
+```diff
+<<<<<<< search