v2.5.0 — Grok Build compatibility and portable multi-CLI packaging

Highlights

• Adds Grok Build compatibility without changing the existing Codex, Claude Code, and Gemini CLI behavior.
• Ships one portable 2.5.0 package across all four runtimes, with a Grok adapter, metadata, default install/sync target, portability fixtures, and native discovery validation.
• Documents Gemini Agent Skills discovery, Antigravity targeting, and duplicate-install prevention.
• Includes the 2.4.0 language-preference and multi-LLM brainstorming additions that landed after the previous GitHub release.
• Supports user-home installation on Bluefin 44 / Fedora Silverblue without modifying the immutable system layer.

See CHANGELOG.md for full details.

Full Changelog: v2.3.0...v2.5.0