chore(env): update MAGE-X version and add fuzz test configuration

Author: mrz1836

.github/env/10-mage-x.env

@@ -36,7 +36,7 @@
 # ================================================================================================
 
 # MAGE-X version
-MAGE_X_VERSION=v1.20.1
+MAGE_X_VERSION=v1.20.2
 
 # For mage-x development, set to 'true' to use local version instead of downloading from releases
 MAGE_X_USE_LOCAL=false
@@ -102,3 +102,25 @@ MAGE_X_MAGE_VERSION=v1.15.0
 # MAGE_X_TEST_EXCLUDE_MODULES=module1,module2
 # MAGE_X_TEST_RACE=false
 # MAGE_X_VERBOSE=true
+
+# ================================================================================================
+# 🧪 FUZZ TEST CONFIGURATION
+# ================================================================================================
+
+# Timeout for pre-compiling fuzz test binaries with coverage instrumentation.
+# This warms the Go build cache before running individual fuzz tests, preventing
+# the first test per package from timing out in projects with large dependency trees.
+# Set to "0s" to disable warmup.
+MAGE_X_FUZZ_WARMUP_TIMEOUT=5m
+
+# Buffer time added to each fuzz test timeout for setup/teardown overhead
+# MAGE_X_FUZZ_BASELINE_BUFFER=90s
+
+# Estimated time per seed during baseline gathering phase
+# MAGE_X_FUZZ_BASELINE_OVERHEAD_PER_SEED=500ms
+
+# Minimum timeout for any fuzz test
+# MAGE_X_FUZZ_MIN_TIMEOUT=90s
+
+# Maximum timeout cap for fuzz tests
+# MAGE_X_FUZZ_MAX_TIMEOUT=30m