105c858d57
Move architecture, package structure, dependencies, and implementation rules into .opencode/agent/implementor.md (default primary agent). Add .opencode/agent/reviewer.md (read-only primary agent) with PR review workflow that leaves inline review comments only -- no issue creation, no edits, no commits. AGENTS.md is now the shared context both agents load: workflow, git/PR conventions, and docs index. Set default_agent: implementor in opencode.json.