d94a739203
Use display names as config.agent keys so opencode shows proper names in UI (Tab/@ menu). Key remapping happens after all agents are assembled but before reordering, via remapAgentKeysToDisplayNames(). - agent-config-handler: set default_agent to display name, add key remapping - agent-key-remapper: new module to transform lowercase keys to display names - agent-priority-order: CORE_AGENT_ORDER uses display names - tool-config-handler: look up agents by config key via agentByKey() helper