Update .gitignore: add target/ and clean up patterns

- Add Rust target/ directory to gitignore
- Remove target/ from git tracking to prevent build artifacts from being committed
- Reorganize .gitignore with proper sections for Rust, Node.js, IDEs, OS files
- Clean up numbered line prefixes and organize patterns logically
- Add comprehensive coverage for build artifacts, dependencies, and temporary files

Co-authored-by: larp0 <[email protected]>

Author: Copilot

.gitignore

@@ -1,100 +1,84 @@
-build
-.vscode
-/index.js
-Tornado_flat.sol
+# Rust
+target/
+Cargo.lock
+**/*.rs.bk
+*.pdb
 
-# Created by .ignore support plugin (hsz.mobi)
-### Node template
-# Logs
-logs
-*.log
+# Node.js
+node_modules/
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 lerna-debug.log*
+.npm
+.yarn-integrity
+*.tgz
 
-# Diagnostic reports (https://nodejs.org/api/report.html)
-report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
-
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
+# Build outputs
+build/
+dist/
+*.log
+logs/
 
-# Coverage directory used by tools like istanbul
-coverage
+# Environment and configuration
+.env
+.env.test
+.env.local
+.env.production
+
+# IDEs and editors
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Testing and coverage
+coverage/
 *.lcov
-
-# nyc test coverage
 .nyc_output
+coverage.json
+
+# Cache directories
+.cache/
+.parcel-cache/
+.next/
+.nuxt/
+.vuepress/dist/
+.eslintcache
 
-# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
+# Temporary and backup files
+*.tmp
+*.temp
+*.bak
+*.pid
+*.seed
+*.pid.lock
+*.tsbuildinfo
 
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
+# OS generated files
+Thumbs.db
+.DS_Store
 
 # Dependency directories
-node_modules/
 jspm_packages/
-
-# TypeScript v1 declaration files
 typings/
+bower_components/
 
-# TypeScript cache
-*.tsbuildinfo
-
-# Optional npm cache directory
-.npm
-
-# Optional eslint cache
-.eslintcache
-
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
-# Yarn Integrity file
-.yarn-integrity
-
-# dotenv environment variables file
-.env
-.env.test
-
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-
-# next.js build output
-.next
-
-# nuxt.js build output
-.nuxt
-
-# vuepress build output
-.vuepress/dist
+# Project specific
+./index.js
+Tornado_flat.sol
+ERC20Tornado_flat.sol
+ETHTornado_flat.sol
 
-# Serverless directories
+# Serverless and other frameworks
 .serverless/
-
-# FuseBox cache
 .fusebox/
-
-# DynamoDB Local files
 .dynamodb/
-
-ERC20Tornado_flat.sol
-ETHTornado_flat.sol
-
-coverage.json
+.grunt/
+.lock-wscript/
+lib-cov/
+pids/
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+build/Release
+.node_repl_history