Add comprehensive .gitignore file and remove cached Python bytecode

- Add standard Python .gitignore with comprehensive patterns
- Include AI/ML specific ignores (models, caches, datasets)
- Add DigiPal-specific patterns (assets/, backups/, logs/, *.db)
- Remove tracked __pycache__ directories and .pyc files
- Ignore development tools (.claude/, .kiro/), environment files, and temporary files
- Include patterns for common IDEs, OS-specific files, and build artifacts

This ensures a clean repository with only source code tracked.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

.gitignore

@@ -0,0 +1,306 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# 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/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# 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/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be added to the global gitignore or merged into this project gitignore.  For a PyCharm
+#  project, it is not recommended to check the JetBrains specific gitignore file into
+#  version control. More details at https://github.com/github/gitignore/issues/3076
+.idea/
+
+# VS Code
+.vscode/
+
+# Sublime Text
+*.sublime-project
+*.sublime-workspace
+
+# Vim
+*.swp
+*.swo
+*~
+
+# Emacs
+*~
+\#*\#
+/.emacs.desktop
+/.emacs.desktop.lock
+*.elc
+auto-save-list
+tramp
+.\#*
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Windows
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+*.stackdump
+[Dd]esktop.ini
+$RECYCLE.BIN/
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+*.lnk
+
+# Linux
+*~
+
+# =============================================================================
+# PROJECT SPECIFIC IGNORES
+# =============================================================================
+
+# DigiPal Application Data
+assets/
+backups/
+logs/
+*.db
+*.sqlite
+*.sqlite3
+
+# AI Model Caches and Downloads
+models/
+model_cache/
+.cache/
+huggingface_cache/
+transformers_cache/
+
+# Large model files
+*.bin
+*.safetensors
+*.onnx
+*.pt
+*.pth
+*.h5
+
+# Audio/Media files (if generated during development)
+*.wav
+*.mp3
+*.mp4
+*.avi
+*.mov
+
+# Image files (if generated during development)
+*.png
+*.jpg
+*.jpeg
+*.gif
+*.bmp
+*.tiff
+
+# Backup files
+*.backup
+*.bak
+*.gz
+
+# Temporary files
+temp/
+tmp/
+.tmp/
+
+# Development tools
+.claude/
+.kiro/
+
+# Environment and secrets
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+secrets/
+.secrets
+
+# HuggingFace specific
+.huggingface/
+hf_cache/
+
+# Gradio specific
+gradio_cached_examples/
+flagged/
+
+# DigiPal specific database and storage
+digipal.db
+digipal_*.db
+*_digipal.db
+test_*.db
+
+# Session and authentication cache
+session_cache/
+auth_cache/
+
+# Performance monitoring logs
+performance_logs/
+metrics/
+
+# Error reports
+crash_reports/
+error_dumps/
+
+# Development artifacts
+.dev/
+dev_*
+debug_*
+test_output/
+
+# Local configuration overrides
+local_config.py
+config_local.py
+local_settings.py