Add agentic MCP stack with sanitized defaults and runtime fixes

[eoinjordan]

Summary

• add a new agentic-mcp/ MCP server stack with local LLM + tool integrations, k8s manifests, and setup scripts
• sanitize personal HF adapter defaults in new docs/config to reusable placeholders
• fix key runtime issues found during review:
  • Pi 5 detection typo (/proc/ccpuinfo -> /proc/cpuinfo)
  • HF output trimming now token-based (avoids brittle string slicing)
  • bridge factory return typing now matches actual return paths
  • add agentic_mcp package wrapper so python -m agentic_mcp.server works
• extend .gitignore for local planning/progress and generated Python artifacts

Validation

• python -m compileall -q agentic-mcp scripts serve_model.py
• import check for agentic_mcp.server
• JSON parse check for MCP config files
• git diff --cached --check

Notes

• local progress trackers were updated in ignored files (issues.md, plan.md) and are not part of this PR.