Fix syntax errors and add external data checks to Phase test files

Author: ManuelBehrendt

test/phase1i_enhanced_particle_projection_tests.jl

@@ -5,13 +5,13 @@
 using Test
 using Mera
 
+# Check if external data is available
+const SKIP_EXTERNAL_DATA = get(ENV, "MERA_SKIP_EXTERNAL_DATA", "false") == "true"
+
 @testset "Phase 1I: Enhanced Particle & Projection Coverage" begin
     println("🔬 Phase 1I: Starting Enhanced Particle & Projection Coverage Tests")
     println("   Target: Boost coverage from ~30% to 60%+ through comprehensive testing")
 
-    # Check if external data is available
-    const SKIP_EXTERNAL_DATA = get(ENV, "MERA_SKIP_EXTERNAL_DATA", "false") == "true"
-    
     if SKIP_EXTERNAL_DATA
         @test_skip "External simulation test data not available for this environment"
         return

test/phase1j_enhanced_type_system_tests.jl

@@ -197,9 +197,9 @@ using Mera
         println("[ Info: 🔍 Testing InfoType field access patterns")
 
         # Check if external data is available
-        const SKIP_EXTERNAL_DATA = get(ENV, "MERA_SKIP_EXTERNAL_DATA", "false") == "true"
+        skip_external_data = get(ENV, "MERA_SKIP_EXTERNAL_DATA", "false") == "true"
 
-        if SKIP_EXTERNAL_DATA
+        if skip_external_data
             @test_skip "External simulation test data not available for this environment"
             return
         end

test/phase1k_enhanced_gravity_clumps_tests.jl

@@ -5,13 +5,13 @@
 using Test
 using Mera
 
+# Check if external data is available
+const SKIP_EXTERNAL_DATA = get(ENV, "MERA_SKIP_EXTERNAL_DATA", "false") == "true"
+
 @testset "Phase 1K: Gravity & Clumps Data Processing Coverage" begin
     println("⚡ Phase 1K: Starting Enhanced Gravity and Clumps Data Processing Coverage Tests")
     println("   Target: Boost gravity coverage from ~60% to 85%+ through comprehensive testing")
 
-    # Check if external data is available
-    const SKIP_EXTERNAL_DATA = get(ENV, "MERA_SKIP_EXTERNAL_DATA", "false") == "true"
-    
     if SKIP_EXTERNAL_DATA
         @test_skip "External simulation test data not available for this environment"
         return