chore: implement rust-specific ignore list

.gitignore

@@ -0,0 +1,24 @@
+# Compiled code and artifacts
+/target/
+
+# Generated by Cargo when performing a release
+*.repo
+
+# Backup files from refactoring tools
+*.rs.bk
+
+# Benchmarking output
+/target/criterion/
+
+# Integration/Profiling (Linux specific)
+perf.data
+perf.data.old
+
+# Cargo lockfile
+Cargo.lock
+
+# Session/cache
+/.claude_session
+/.remember/tmp/save-session.pid
+/.direnv/CACHEDIR.TAG
+/.gemini_session