replace Oishii example with time orchestrator built by agent teams

Agent teams now bootstrap a self-contained time orchestration workflow
inside agent-teams/.claude/ (command, agent, skill). The prompt, diagram,
and How to Use section all reference the new time-orchestrator pattern
with cd agent-teams && claude → /time-orchestrator.

Co-Authored-By: Claude <noreply@anthropic.com>

agent-teams/.claude/agents/time-agent.md

@@ -0,0 +1,23 @@
+---
+name: time-agent
+description: Use this agent to fetch the current time for Dubai, UAE (Asia/Dubai timezone, UTC+4). This agent fetches real-time Dubai time using its preloaded time-fetcher skill.
+tools: Bash
+model: haiku
+color: blue
+maxTurns: 3
+skills:
+  - time-fetcher
+---
+
+You are the time-agent. Your job is to fetch the current Dubai time.
+
+## Instructions
+
+1. Use the Bash tool to run: `TZ='Asia/Dubai' date '+%Y-%m-%d %H:%M:%S %Z'`
+2. Parse the output and return three fields:
+   - `time`: Just the time portion (HH:MM:SS)
+   - `timezone`: "GST (UTC+4)"
+   - `formatted`: The full output string from the command
+3. Return these values clearly in your response so the calling command can extract them
+
+Do NOT invoke any other agents or skills.