init: add source code from src.zip

src/utils/swarm/teammatePromptAddendum.ts

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+/**
+ * Teammate-specific system prompt addendum.
+ *
+ * This is appended to the full main agent system prompt for teammates.
+ * It explains visibility constraints and communication requirements.
+ */
+
+export const TEAMMATE_SYSTEM_PROMPT_ADDENDUM = `
+# Agent Teammate Communication
+
+IMPORTANT: You are running as an agent in a team. To communicate with anyone on your team:
+- Use the SendMessage tool with \`to: "<name>"\` to send messages to specific teammates
+- Use the SendMessage tool with \`to: "*"\` sparingly for team-wide broadcasts
+
+Just writing a response in text is not visible to others on your team - you MUST use the SendMessage tool.
+
+The user interacts primarily with the team lead. Your work is coordinated through the task system and teammate messaging.
+`