docs: rewrite README, llms.txt, and add AGENTS.md

feat: add unit tests for vm-common.sh helpers

feat: add provision command, host-port flag, and harden allocation helpers

Fix SSH wait checks to use explicit instance IDs

chore: up ver

feat: improve CLI output with colored status tables and better errors

fix: use fc-br0 bridge name to match existing infrastructure

feat: add fireclaw CLI wrapper and fix global install

Add unique VM api socket support

Validate instance id inputs

feat: add agent skill following open agent skills standard

docs: add llms.txt for LLM-readable project context

docs: expand README with architecture, setup guide, and usage reference

feat: initial Firecracker VM control plane for OpenClaw