docs & example & concurrent fetcher

.gitignore

@@ -1,6 +1,5 @@
 # Virtual Environment
 venv/
-.profiling/
 
 # Python Artifacts
 __pycache__/
@@ -11,10 +10,6 @@ __pycache__/
 build/
 dist/
 
-# Data Files
-/src/single_chunk_processor/data/*.json
-/src/single_chunk_processor/data/*.zip
-
 # Environment Files
 *.env
 
@@ -30,35 +25,16 @@ out/
 .gas-snapshot
 .encryptedKey
 broadcast/
-
-# Node.js
-node_modules/
-package-lock.json
-
-# System Files
-.DS_Store
-src/.DS_Store
-
-# Solidity Verifier
-solidity-verifier/lib/*
-
-# Cairo VM
-cairo-vm
-
-# HDP
-hdp-test/
-hdp/
-
 *.memory
 *.trace
 
 # Whitelist - these files should not be ignored
-!tests/cairo_programs/fixtures/*.json
-!tools/js/package.json
 !*_contract.json
 !packages/cairo-lang-0.13.1.zip
 
 # Scarb & snfoundry
 target
 .snfoundry_cache/
-.cargo
+.cargo
+
+!examples/*.json