pi-python v0.3.0

Added

• TUI binary in GitHub Releases (beta): prebuilt zypi Linux x86_64 binary is now included in GitHub Releases alongside Python wheels. Download zypi-linux-x86_64 from the release assets page. Build from source for other platforms.
• Phase 5 (Coding Agent prompt engine): pi-aligned build_system_prompt() / build_coding_agent_harness_system_prompt() in pi_agent_cli; tool prompt_snippet / prompt_guidelines contributions; AGENTS.md / CLAUDE.md / SYSTEM.md / APPEND_SYSTEM.md context files; <available_skills> XML format; bash PI_* env.
• FrontierHarness 30-task evaluation: scripts/run_eval.py CLI with 21 Terminal-Bench + 9 DeepSWE industrial tasks; dual runtime (Windows local NTFS junctions + WSL2 Docker sandbox); v2ray proxy integration; full report in docs/benchmarks/FRONTIER-HARNESS-30-EVAL-REPORT.md.
• TUI & Code-Agent guide: new docs/TUI-AND-CODE-AGENT.md covering installation, configuration, and usage for both zypi TUI and pi_agent_cli.
• Release workflow: build-tui job builds the Rust TUI binary (cargo build --profile release-dist -p pi-pager-bin) and uploads zypi-linux-x86_64 to GitHub Releases.

Changed

• TUI x.ai/ residual cleanup (P4P5-1 resolution): systematic purge of 680 x.ai/ references across 115 files in tui/crates/codegen/pi-pager/src/. New acp/vendor.rs centralises vendor-prefix constants and helpers; 4 inbound filter sites use vendor::is_vendor_ext_method() as defensive guards; doc comments, test fixtures, views/dispatch literals all scrubbed. Only vendor.rs (4 constants) and worktree_cmd/mod.rs (20, deferred) retain x.ai/ strings.
• Test regression fixes: fixed 5 x.ai cleanup regressions where test data was over-renamed to pi/ while handler code still used original constant names (TITLE_IS_MANUAL_META_KEY, PI_SESSION_UPDATE_METHOD, is_vendor_meta_key).
• Grok-specific tests marked #[ignore]: 62 tests for features removed from pi-python (grok slash commands, /loop scheduler, /share, dashboard, ~/.grok path, agent subcommand) annotated with #[ignore = "pi-python: grok-specific feature not supported"].
• TUI test result: 8880 passed, 0 failed, 72 ignored.
• TUI and code-agent marked as beta in README.
• README restructured: added Status table, TUI install section, and updated roadmap.