chore: purge accidentally tracked binaries and update gitignore

Author: hitendras510

.gitignore

@@ -45,11 +45,27 @@ __pycache__/
 models/eco_model.pth
 =======
 .venv/
+.venv*/
 __pycache__/
 *.pyc
+*.pyo
+*.pyd
 *.so
 *.exe
+*.dll
+*.bin
 node_modules/
 .env
 dist/
+<<<<<<< HEAD
 >>>>>>> 1c2f25b401a67215ea459ece945cb72cc7dbd373
+=======
+build/
+.pytest_cache/
+.ruff_cache/
+.mypy_cache/
+.turbo/
+.DS_Store
+# Avoid absolute binary rejects by HF if needed, but keep common assets
+# apps/frontend/hero-bg.png # This was specifically rejected
+>>>>>>> 448c73b (chore: purge accidentally tracked binaries and update gitignore)