Add security infrastructure for open source release

.gitignore

@@ -1,13 +1,71 @@
+# ============================================================================
+# AutoJSON Specific Files
+# ============================================================================
 # AutoJSON output files
 .autojson_debug_context.json
 .autojson_filter_config.json
 dashboard/.service_config.json
 
+# AutoJSON time-travel archives
+.autojson_history/
+
+# AutoJSON temporary files
+*.tmp
+.autojson_tmp_*.json
+
+# Test outputs
+test_*.json
+*_demo.json
+
+# ============================================================================
+# Sensitive Data & Secrets (CRITICAL - Never commit these!)
+# ============================================================================
+# Environment variables
+.env
+.env.*
+!.env.example
+.envrc
+
+# API Keys and tokens
+*.key
+*.pem
+*.p12
+*.pfx
+*.cer
+*.crt
+*.der
+secrets/
+.secrets/
+
+# Configuration files with credentials
+*secret*.json
+*credentials*.json
+*config*.local.*
+*private*.json
+
+# Database files
+*.db
+*.sqlite
+*.sqlite3
+
+# Backup files
+*.backup
+*.bak
+*.old
+*.orig
+
+# ============================================================================
 # Python
+# ============================================================================
+# Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
 *$py.class
+
+# C extensions
 *.so
+
+# Distribution / packaging
 .Python
 build/
 develop-eggs/
@@ -28,39 +86,271 @@ share/python-wheels/
 *.egg
 MANIFEST
 
-# Virtual environments
-venv/
-env/
-ENV/
-env.bak/
-venv.bak/
+# PyInstaller
+*.manifest
+*.spec
 
-# Testing
-.pytest_cache/
-.coverage
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
 htmlcov/
 .tox/
-.hypothesis/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
 *.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+pytestdebug.log
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
 *.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+docs/.doctrees/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+*.ipynb
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+Pipfile.lock
+
+# PEP 582
+__pypackages__/
 
-# IDEs
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+pythonenv*
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# ============================================================================
+# IDEs and Editors
+# ============================================================================
+# VSCode
 .vscode/
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# PyCharm / IntelliJ IDEA
 .idea/
+.idea/*
+*.iml
+*.ipr
+*.iws
+.idea_modules/
+
+# Sublime Text
+*.sublime-project
+*.sublime-workspace
+*.tmlanguage.cache
+*.tmPreferences.cache
+*.stTheme.cache
+*.sublime-workspace
+sftp-config.json
+sftp-config-alt*.json
+
+# Vim
 *.swp
 *.swo
+.vim/
+.vimsettings
+tags
+.netrwhist
+
+# Emacs
+\#*\#
+/.emacs.desktop
+/.emacs.desktop.lock
+*.elc
+auto-save-list
+tramp
+.\#*
+
+# TextMate
+*.tmproj
+*.tmproject
+tmtags
+
+# Eclipse
+.project
+.cproject
+.classpath
+.settings/
+.buildpath
+
+# NetBeans
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+.nb-gradle/
+
+# ============================================================================
+# Operating System Files
+# ============================================================================
+# Common to all OS
 *~
+
+# macOS
 .DS_Store
+.AppleDouble
+.LSOverride
+._*
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
 
-# Temporary files
-*.tmp
-.autojson_tmp_*.json
+# Windows
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+*.stackdump
+[Dd]esktop.ini
+$RECYCLE.BIN/
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+*.lnk
+
+# Linux
+.directory
+.Trash-*
+.nfs*
+
+# ============================================================================
+# Temporary and Cache Files
+# ============================================================================
 tmp/
 temp/
+*.tmp
+*.temp
+*.cache
+.cache/
 
-# Test outputs
-test_*.json
-*_demo.json
+# ============================================================================
+# Logs
+# ============================================================================
+*.log
+logs/
+*.log.*
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
 
-# AutoJSON time-travel archives
-.autojson_history/
+# ============================================================================
+# Node.js / JavaScript (if applicable for dashboard or extensions)
+# ============================================================================
+node_modules/
+npm-debug.log
+yarn-error.log
+.npm
+.yarn-integrity
+package-lock.json
+yarn.lock
+.pnp
+.pnp.js
+.eslintcache
+
+# ============================================================================
+# Misc
+# ============================================================================
+# Archives
+*.zip
+*.tar
+*.tar.gz
+*.tgz
+*.rar
+*.7z
+
+# Docker
+docker-compose.override.yml
+.dockerignore
+
+# Git
+*.rej
+.git-rewrite/
+
+# Other
+.history/

README.md

@@ -397,6 +397,9 @@ indicate security vulnerabilities in auth, payment, or admin endpoints.
 - **[FILE_ANCHORS_GUIDE.md](FILE_ANCHORS_GUIDE.md)** - File navigation implementation
 - **[BATCHING_SUMMARY.md](BATCHING_SUMMARY.md)** - Performance optimization details
 
+### Security
+- **[SECURITY.md](SECURITY.md)** - 🔒 Security policy, vulnerability reporting, and best practices
+
 ---
 
 ## 🔒 Security & Privacy
@@ -406,6 +409,14 @@ indicate security vulnerabilities in auth, payment, or admin endpoints.
 - ✅ **No Internet Required** - Fully offline capable
 - ⚠️ **Sensitive Data** - `.autojson_debug_context.json` may contain error messages with user data
 
+**Security Resources:**
+- **[SECURITY.md](SECURITY.md)** - 🔒 Complete security policy, vulnerability reporting, and best practices
+- **Git History Scanner** - Scan for accidentally committed secrets:
+  ```bash
+  python scripts/scan_git_history.py
+  python scripts/scan_git_history.py --output security_report.txt
+  ```
+
 **Recommended `.gitignore`:**
 ```
 .autojson_debug_context.json