docs: generalize agent compatibility in README across Claude, Codex, Antigravity, and other tools

README.md

@@ -1,4 +1,4 @@
-# Public Agent & Antigravity Skills
+# Public Agent Skills
 
 A collection of public, reusable agent skills, cheatsheets, and operational workflows for AI coding assistants and automation agents.
 
@@ -10,8 +10,10 @@ A collection of public, reusable agent skills, cheatsheets, and operational work
 
 ---
 
-## 🛠️ Usage
+## 🛠️ Usage Across AI Agents & Tools
 
-To use these skills with Antigravity:
-1. Clone or symlink desired skills into your project's `.agents/skills/` or global `~/.gemini/config/skills/`.
-2. The agent will discover them automatically through progressive disclosure.
+These skill documents are compatible across agentic developer assistants and environments:
+- **Claude Code / Claude Desktop**: Symlink or reference in project instructions or memory.
+- **Codex**: Include in workspace instructions or agent configuration.
+- **Antigravity**: Mount or reference from workspace `.agents/skills/` or global `~/.gemini/config/skills/`.
+- **Other AI Tools (Cursor, OpenCode, Aider, Devin)**: Include as persistent project rules or context files.