Initial clean commit of Assistive Dashboard project

.gitignore

+# Ignore node_modules folders
+backend/node_modules/
+dashboard/node_modules/
+
+# Ignore environment variables
+backend/.env
+
+# Ignore OS junk files
+.DS_Store
+
+# Ignore log files
+*.log
+
+# Ignore build artifacts (if any)
+dashboard/build/
\ No newline at end of file