fix: auto-clean orphan entities on purge; fix graph camera zoom; optimize system prompt

.gitignore

@@ -1,77 +1,23 @@
-# Python
 __pycache__/
-*.py[cod]
-*$py.class
-*.so
-.Python
-develop-eggs/
-dist/
-downloads/
-eggs/
-.lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-
-# Virtual Environment
-venv/
-test_venv/
-ENV/
-env/
-
-# IDE
-.vscode/
-.idea/
-.arts/
-.codeartsdoer/
-*.swp
-*.swo
-*~
-
-# Database
-*.db
-*.sqlite
-*.sqlite3
-
-# Logs
-*.log
-logs/
-
-# OS
+*.pyc
+*.pyo
 .DS_Store
-Thumbs.db
-
-# Sensitive
-.env
-*.key
-*.pem
-config.json
-
-# Build
-dist/
-
-# Temporary
-*.tmp
-*.bak
-
-# AI Generated
-jimeng*.png
-
-# Test Cache
-.pytest_cache/
-
-# Web config (contains passwords, secret keys)
-web_config.json
-
-# Node.js
+harmonyos/.hvigor/
+harmonyos/build/
+harmonyos/entry/build/
+harmonyos.bak/
 node_modules/
-
-# Test artifacts
-/session_*/
+ts/node_modules/
+ts/dist/
+ts/build/
+*.hap
+*.hsp
+.env
+venv/
+.venv/
+dist/
+build/trulymem/
+*.db
 task_archive/
-ts/
+ts/task_archive/
+core/web_config.json