docs: consolidate Release Notes into Changelog and remove temp file [skip ci]

RELEASE_NOTES.md

@@ -1,47 +0,0 @@
-# 🚀 RELEASE NOTES: Antigravity Awesome Skills V3.0.0
-
-**"The Governance Update"**
-
-This release transforms the repository from a simple collection of scripts into a trusted, battle-tested platform for AI Agents.
-
-## 🌟 Headline Features
-
-### 1. Trusted Quality Bar (`docs/QUALITY_BAR.md`)
-
-Every skill now undergoes a strict 5-point validation check.
-
-- **Why?** No more broken scripts or vague instructions.
-- **For You:** Look for the 🟣 **Official** or 🔵 **Safe** badges.
-
-### 2. Security Guardrails (`docs/SECURITY_GUARDRAILS.md`)
-
-We introduced "Risk Labels" to protect you.
-
-- 🔴 **Offensive** skills (Pentesting) now require explicit authorization mechanisms.
-- 🟢 **Safe** skills are guaranteed non-destructive.
-
-### 3. Starter Packs (`docs/BUNDLES.md`)
-
-Don't know where to start? We now have **9 Curated Bundles**:
-
-- **Essentials Pack**: `concise-planning`, `clean-code`, `lint-and-validate`.
-- **Web Wizard**: `react-patterns`, `tailwind-mastery`, `frontend-design`.
-- **Agent Architect**: `mcp-builder`, `agent-evaluation`.
-- ...plus **DevOps**, **Game Dev**, **Data Science**, **Testing**, and more.
-
-## 🛠️ For Developers & Contributors
-
-- **New CI/CD**: Pull Requests are now automatically validated (`.github/workflows/ci.yml`).
-- **Strict Linting**: `scripts/validate_skills.py --strict` is the new sheriff in town.
-- **Attribution**: We now have a clear ledger of sources in `docs/SOURCES.md`.
-
-## 📦 How to Update
-
-```bash
-cd .agent/skills
-git pull origin main
-# (Optional) Verify your local skills
-python3 scripts/validate_skills.py
-```
-
-_Built with ❤️ by the Antigravity Team._