diff --git a/MoonBit.gitignore b/MoonBit.gitignore
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+# Build System Artifacts
+
+# MoonBit default build output directory.
+_build/
+# Local MoonBit package cache directory.
+.mooncakes/
+
+# Coverage and Test Artifacts
+
+# Coverage reports generated by MoonBit tooling.
+moonbit-coverage-*.txt
+# Coverage output directory used by coverage commands.
+_coverage/
+# Bisect runtime coverage data file.
+bisect.coverage
+
+# JavaScript Target Artifacts
+
+# Uncomment if generated JavaScript should be ignored.
+# *.js
+# Source map files generated for JavaScript output.
+*.js.map
+# Node.js dependencies used in JS target workflows.
+node_modules/
+
+# WebAssembly Target Artifacts
+
+# Compiled WebAssembly binaries.
+*.wasm
+# WebAssembly text format output.
+*.wat
+
+# MoonBit Pilot / Agent Artifacts
+
+# MoonBit agent runtime state and temporary files.
+.moonagent/
+
+# LLVM Backend Artifacts
+
+# LLVM textual intermediate representation (IR) files.
+*.ll
+# LLVM bitcode files.
+*.bc
+# Native object files from LLVM/native compilation.
+*.o
+# Generated assembly source files.
+*.s
+# Default executable output name on Unix-like systems.
+*.out
+# Native executable output on Windows.
+*.exe
+# macOS debug symbol bundles.
+*.dSYM/