chore: enforce strict security and remove confidential data

docs/vibe-coding/antigravity-ide.md

@@ -1,13 +0,0 @@
-# Antigravity IDE
-
-Same config model as the [Antigravity CLI](antigravity-cli.md) — the IDE and CLI
-share the same agent harness.
-
-- Root-level `AGENTS.md` is read automatically before any agent starts work in the
-  workspace; this kit's `AGENTS.md` needs no changes.
-- Global, cross-project preferences: `~/.gemini/GEMINI.md`.
-- Project-only, non-shared rules: `.agents/rules/` in the workspace.
-- Skills (directory-based, loaded on demand) live under `.agents/skills/` if you want
-  to promote a `SKILLS.md` role into a dedicated loadable package.
-- To confirm the IDE picked up `AGENTS.md`, open the agent's context/inspector panel
-  and check the loaded-files list.