pi-python v0.2.0

Added

• Phase 4 P0–P4 (Coding Agent CLI): vendored grok-build TUI under tui/ (Apache-2.0, excluded from wheels); packages/pi-agent-cli standard ACP agent over AgentHarness (no x.ai/*); TUI spawn python -m pi_agent_cli, skip xAI login, drop vendor extension RPCs, home ~/.pi-python, product binary zypi. TUI Cargo crates renamed xai-* → pi-*, then P5 de-grok: pi-grok-* → pi-*, grok CLI subcommands removed, auth/prefetch startup skipped when auth_methods is empty. /new→session/new, /resume→session/list+session/load; @ is in-process directory listing; zypi -p / python -m pi_agent_cli -p is Python headless. P4: config.toml (model, permission, skills, [agent].command), coding system prompt + skills XML, Windows notes in docs/WINDOWS.md.
• Pelican-on-a-bicycle foundation benchmark: pi_agent_cli.benchmarks.pelican, scripts/smoke_pelican.py, docs/benchmarks/PELCAN-BICYCLE.md — structural SVG smoke test for the pi TUI agent path.
• PyPI: pi-agent-cli-lc included in the release workflow (tag v* builds and publishes core, harness, and cli wheels/sdists; Rust TUI excluded).