chore: drop CHANGELOG, .gitignore, hitl.db, and .pr_body from PR

Per review feedback on #110 — these files should not be part of this PR.

Author: garythomasgeorge

.gitignore

@@ -79,12 +79,6 @@ Thumbs.db
 *.tmp
 *.temp
 
-# ADK local dev artifacts
-.adk/
-*.db
-*.sqlite
-hitl.db
-
 # gemini-cli settings
 .gemini/
 

.pr_body.md

@@ -1,11 +1,5 @@
 # Changelog
 
-## [Unreleased]
-
-### Features
-
-* **hitl:** add production-ready Human-in-the-Loop approval gateway for ADK agents — includes `@hitl_tool` decorator, FastAPI approval service with SQLite persistence, ADK 1.x adapter, and reference Streamlit dashboard (`contributing/samples/hitl_approval`)
-
 ## [0.5.0](https://github.com/google/adk-python-community/compare/v0.4.1...v0.5.0) (2026-05-20)