feat: Implement 4 key enhancements for Grant Stream contract"

.gitignore

@@ -1,39 +0,0 @@
-# Rust / Cargo build artifacts
-target/
-Cargo.lock          # ← Usually ignored in library crates; commit if it's a binary or workspace root with fixed deps
-*.rs.bk
-*.swp
-
-# Soroban-specific
-.soroban/           # ← soroban CLI cache, deployments, etc.
-*.wasm              # Compiled contract WASM (regenerate on build)
-*.wasm.map
-*.optimized.wasm
-
-# Environment / secrets
-.env
-.env.*
-!.env.example       # Keep template if you have one
-
-# IDE / editor files
-.vscode/
-.idea/
-*.sublime-*
-.DS_Store
-Thumbs.db
-
-# Testing / temp
-tests/output/
-coverage/
-prof/
-
-# If you have frontend/tests/scripts in the same repo (optional)
-node_modules/
-npm-debug.log
-yarn-error.log
-dist/
-build/
-
-# Misc
-*.log
-*.tmp