feat: examples directory — agent templates + standalone scripts

[OneStepAt4time]

M3.1 — Examples Directory

Parent: #440 (Roadmap)
Milestone: M3 — Reference Implementation
Depends on: M1 + M2 complete

Deliverables

examples/
├── openclaw-agent/
│   ├── SOUL.md                 # Template: dev agent with Aegis
│   ├── HEARTBEAT.md            # Template: automated dev loop
│   └── openclaw.json           # Reference OpenClaw config
├── claude-code-skill/
│   ├── aegis-workflow.md       # CC skill for full workflow orchestration
│   └── aegis-task.md           # CC skill for single task execution
└── standalone/
    ├── simple-agent.ts         # Minimal Node.js script using Aegis MCP
    ├── ci-runner.ts            # CI/CD example: run tests via Aegis session
    └── README.md               # How to run examples

Acceptance criteria

• Each example runs independently
• standalone/simple-agent.ts creates a session, sends a prompt, reads result — in <50 lines
• Templates are battle-tested (derived from Hep's actual config, not theoretical)