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/skills/time-fetcher/SKILL.md

@@ -0,0 +1,31 @@
+---
+name: time-fetcher
+description: Instructions for fetching current Dubai time via bash command
+user-invocable: false
+---
+
+## Dubai Time Fetcher
+
+### Command
+
+```bash
+TZ='Asia/Dubai' date '+%Y-%m-%d %H:%M:%S %Z'
+```
+
+### Expected Output Format
+
+`YYYY-MM-DD HH:MM:SS +04` (Gulf Standard Time)
+
+### Timezone Details
+
+- Timezone: Asia/Dubai
+- Offset: UTC+4
+- Abbreviation: GST (Gulf Standard Time)
+- Dubai does not observe daylight saving time
+
+### Return Format
+
+Provide the following fields:
+- `time`: Just the time portion (HH:MM:SS)
+- `timezone`: "GST (UTC+4)"
+- `formatted`: The full output string from the command