Remove hardcoded paths from CI test warning messages

Author: ManuelBehrendt

test/phase1_data_integration_tests_fixed.jl

@@ -305,9 +305,9 @@ else
     @info """
     ⚠️  Phase 1 Integration Tests Skipped
     
-    Simulation test data not found at: $TEST_DATA_ROOT
+    External simulation test data not available for this environment
     To run these comprehensive tests:
-    1. Ensure the test data directory is accessible
+    1. Ensure the test data directory is accessible locally
     2. Re-run the test suite
     
     These tests would significantly improve coverage for core functionality.

test/phase1c_minimal_hydro_tests.jl

@@ -24,7 +24,7 @@ println("=======================================================================
         if SKIP_EXTERNAL_DATA
             @test_skip "Phase 1C tests skipped - external simulation data disabled (MERA_SKIP_EXTERNAL_DATA=true)"
         else
-            @warn "Simulation test data not found at: $TEST_DATA_ROOT"
+            @warn "External simulation test data not available for this environment"
             @warn "Skipping Phase 1C tests - cannot test projection functions without real data"
         end
         return

test/phase1d_data_utilities_tests.jl

@@ -22,7 +22,7 @@ println("=======================================================================
 
 @testset "Phase 1D: Data Utilities & Advanced Functions Tests" begin
     if !TEST_DATA_AVAILABLE
-        @warn "Simulation test data not found at: $TEST_DATA_ROOT"
+        @warn "External simulation test data not available for this environment"
         @warn "Skipping Phase 1D tests - cannot test data utilities without real data"
         return
     end

test/phase1e_streamlined_tests.jl

@@ -22,7 +22,7 @@ println("=======================================================================
 
 @testset "Phase 1E: Streamlined Particle & Optimization Tests" begin
     if !TEST_DATA_AVAILABLE
-        @warn "Simulation test data not found at: $TEST_DATA_ROOT"
+        @warn "External simulation test data not available for this environment"
         @warn "Skipping Phase 1E tests - cannot test without real data"
         return
     end

test/phase1f_untested_functions_tests.jl

@@ -22,7 +22,7 @@ println("=======================================================================
 
 @testset "Phase 1F: Untested Functions Coverage Tests" begin
     if !TEST_DATA_AVAILABLE
-        @warn "Simulation test data not found at: $TEST_DATA_ROOT"
+        @warn "External simulation test data not available for this environment"
         @warn "Skipping Phase 1F tests - cannot test without real data"
         return
     end

test/phase1g_advanced_integration_tests.jl

@@ -22,7 +22,7 @@ println("=======================================================================
 
 @testset "Phase 1G: Advanced Integration Tests" begin
     if !TEST_DATA_AVAILABLE
-        @warn "Simulation test data not found at: $TEST_DATA_ROOT"
+        @warn "External simulation test data not available for this environment"
         @warn "Skipping Phase 1G tests - cannot test without real data"
         return
     end

test/phase1h_specialized_coverage_tests.jl

@@ -22,7 +22,7 @@ println("=======================================================================
 
 @testset "Phase 1H: Specialized Function Coverage Tests" begin
     if !TEST_DATA_AVAILABLE
-        @warn "Simulation test data not found at: $TEST_DATA_ROOT"
+        @warn "External simulation test data not available for this environment"
         @warn "Skipping Phase 1H tests - cannot test without real data"
         return
     end