feat: contribute DocsClaw as Go-based example to kagenti/agent-examples

Summary

Contribute a DocsClaw-based agent example to the
kagenti/agent-examples
repository, demonstrating a Go-based alternative to the Python agents.

Motivation

All current kagenti agent examples use Python with various
frameworks (LangGraph, AG2, CrewAI, Marvin). DocsClaw can
replace 6 of the 10 agents with configuration alone — different
ConfigMaps, same 10 MiB binary. This demonstrates:

• Single runtime, multiple personalities (vs. framework per agent)
• 10 MiB per pod vs. 200-500 MiB for Python agents
• No framework choice paralysis — config-driven behavior

Approach

Start by reproducing the Generic Agent — it's the most
flexible example and shows dynamic tool loading. A DocsClaw
ConfigMap with the same system prompt and MCP tool connections
would produce equivalent behavior.

Depends on

• #2 (MCP client integration) — needed to connect to the same
  MCP tool servers the Python agents use

Start by reviewing the Generic Agent example in kagenti/agent-examples and the DocsClaw configuration described in this issue. Check issue #2 for MCP client integration and reproduce the Generic Agent's system prompt and MCP tool connections; done means a working Go-based example in the target repository with equivalent behavior.