diff --git a/Project-Tests/run-tests.sh b/Project-Tests/run-tests.sh
index 6a34df0..f0190ba 100755
--- a/Project-Tests/run-tests.sh
+++ b/Project-Tests/run-tests.sh
@@ -5,10 +5,19 @@
 
 set -euo pipefail
 
-# Source framework includes
-PROJECT_ROOT="$(dirname "$(realpath "${BASH_SOURCE[0]}")")/.."
-source "$PROJECT_ROOT/Framework-Includes/Logging.sh"
-source "$PROJECT_ROOT/Framework-Includes/PrettyPrint.sh"
+# Resolve repository root from this script's location (Project-Tests/ -> repo root)
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+# The KNELShellFramework is vendored under vendor/
+FRAMEWORK_INCLUDES="$PROJECT_ROOT/vendor/git@git.knownelement.com/29418/KNEL/KNELShellFramework/Framework-Includes"
+source "$FRAMEWORK_INCLUDES/Logging.sh"
+source "$FRAMEWORK_INCLUDES/PrettyPrint.sh"
+
+# The vendored PrettyPrint only defines print_info/print_error; provide the
+# additional output helpers the test suite relies on.
+function print_header()  { echo ""; echo "=== $1 ==="; }
+function print_success() { echo "✅ $1"; }
+function print_warning() { echo "⚠️  $1"; }
 
 # Test configuration
 TEST_LOG_DIR="$PROJECT_ROOT/logs/tests"
diff --git a/Project-Tests/security/2fa-validation.sh b/Project-Tests/security/2fa-validation.sh
index 443c2d6..f1b9b78 100755
--- a/Project-Tests/security/2fa-validation.sh
+++ b/Project-Tests/security/2fa-validation.sh
@@ -18,7 +18,7 @@ function test_2fa_packages() {
             echo "✅ Package installed: $package"
         else
             echo "❌ Package missing: $package"
-            ((failed++))
+            ((++failed))
         fi
     done
     
@@ -27,7 +27,7 @@ function test_2fa_packages() {
         echo "✅ Google Authenticator command available"
     else
         echo "❌ Google Authenticator command not found"
-        ((failed++))
+        ((++failed))
     fi
     
     return $failed
@@ -44,21 +44,21 @@ function test_ssh_2fa_config() {
         echo "✅ ChallengeResponseAuthentication enabled"
     else
         echo "❌ ChallengeResponseAuthentication not enabled"
-        ((failed++))
+        ((++failed))
     fi
     
     if grep -q "^UsePAM yes" "$ssh_config"; then
         echo "✅ UsePAM enabled"
     else
         echo "❌ UsePAM not enabled"
-        ((failed++))
+        ((++failed))
     fi
     
     if grep -q "^AuthenticationMethods publickey,keyboard-interactive" "$ssh_config"; then
         echo "✅ AuthenticationMethods configured for 2FA"
     else
         echo "❌ AuthenticationMethods not configured for 2FA"
-        ((failed++))
+        ((++failed))
     fi
     
     return $failed
@@ -75,7 +75,7 @@ function test_pam_2fa_config() {
         echo "✅ PAM Google Authenticator module configured"
     else
         echo "❌ PAM Google Authenticator module not configured"
-        ((failed++))
+        ((++failed))
     fi
     
     # Check if nullok is present (allows users without 2FA setup)
@@ -106,7 +106,7 @@ function test_cockpit_2fa_config() {
         echo "✅ Cockpit configuration file exists"
     else
         echo "❌ Cockpit configuration file missing"
-        ((failed++))
+        ((++failed))
     fi
     
     # Check Cockpit PAM configuration
@@ -114,7 +114,7 @@ function test_cockpit_2fa_config() {
         echo "✅ Cockpit PAM 2FA configured"
     else
         echo "❌ Cockpit PAM 2FA not configured"
-        ((failed++))
+        ((++failed))
     fi
     
     return $failed
@@ -137,14 +137,14 @@ function test_webmin_2fa_config() {
         echo "✅ Webmin TOTP provider configured"
     else
         echo "❌ Webmin TOTP provider not configured"
-        ((failed++))
+        ((++failed))
     fi
     
     if grep -q "^twofactor=1" "$webmin_config"; then
         echo "✅ Webmin 2FA enabled"
     else
         echo "❌ Webmin 2FA not enabled"
-        ((failed++))
+        ((++failed))
     fi
     
     return $failed
@@ -163,7 +163,7 @@ function test_user_2fa_setup() {
                 echo "✅ 2FA setup script exists for user: $user"
             else
                 echo "❌ 2FA setup script missing for user: $user"
-                ((failed++))
+                ((++failed))
             fi
             
             # Check if instructions exist
@@ -171,7 +171,7 @@ function test_user_2fa_setup() {
                 echo "✅ 2FA instructions exist for user: $user"
             else
                 echo "❌ 2FA instructions missing for user: $user"
-                ((failed++))
+                ((++failed))
             fi
         else
             echo "⚠️  User $user not found, skipping"
@@ -191,7 +191,7 @@ function test_service_status() {
         echo "✅ SSH service is running"
     else
         echo "❌ SSH service is not running"
-        ((failed++))
+        ((++failed))
     fi
     
     # Test SSH configuration
@@ -199,7 +199,7 @@ function test_service_status() {
         echo "✅ SSH configuration is valid"
     else
         echo "❌ SSH configuration is invalid"
-        ((failed++))
+        ((++failed))
     fi
     
     # Test Cockpit service if installed
@@ -208,7 +208,7 @@ function test_service_status() {
             echo "✅ Cockpit service is running"
         else
             echo "❌ Cockpit service is not running"
-            ((failed++))
+            ((++failed))
         fi
     fi
     
@@ -218,7 +218,7 @@ function test_service_status() {
             echo "✅ Webmin service is running"
         else
             echo "❌ Webmin service is not running"
-            ((failed++))
+            ((++failed))
         fi
     fi
     
@@ -242,7 +242,7 @@ function test_backup_existence() {
         fi
     else
         echo "❌ Backup directory does not exist"
-        ((failed++))
+        ((++failed))
     fi
     
     return $failed
diff --git a/Project-Tests/security/https-enforcement.sh b/Project-Tests/security/https-enforcement.sh
index 9263afd..08f1073 100755
--- a/Project-Tests/security/https-enforcement.sh
+++ b/Project-Tests/security/https-enforcement.sh
@@ -5,23 +5,24 @@
 
 set -euo pipefail
 
-PROJECT_ROOT="$(dirname "$(realpath "${BASH_SOURCE[0]}")")/../.."
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+FRAMEWORK_INCLUDES="$PROJECT_ROOT/vendor/git@git.knownelement.com/29418/KNEL/KNELShellFramework/Framework-Includes"
 
 function test_no_http_urls() {
     echo "🔍 Checking for HTTP URLs in scripts..."
     
     local http_violations=0
-    local script_dirs=("ProjectCode" "Framework-Includes" "Project-Includes")
-    
+    local script_dirs=("$PROJECT_ROOT/ProjectCode" "$FRAMEWORK_INCLUDES" "$PROJECT_ROOT/Project-Includes")
+
     for dir in "${script_dirs[@]}"; do
-        if [[ -d "$PROJECT_ROOT/$dir" ]]; then
+        if [[ -d "$dir" ]]; then
             # Find HTTP URLs in shell scripts (excluding comments)
             while IFS= read -r -d '' file; do
                 if grep -n "http://" "$file" | grep -v "^[[:space:]]*#" | grep -v "schema.org" | grep -v "xmlns"; then
                     echo "❌ HTTP URL found in: $file"
-                    ((http_violations++))
+                    ((++http_violations))
                 fi
-            done < <(find "$PROJECT_ROOT/$dir" -name "*.sh" -type f -print0)
+            done < <(find "$dir" -name "*.sh" -type f -print0)
         fi
     done
     
@@ -37,12 +38,12 @@ function test_no_http_urls() {
 function test_https_urls_valid() {
     echo "🔍 Validating HTTPS URLs are accessible..."
     
-    local script_dirs=("ProjectCode" "Framework-Includes" "Project-Includes")
+    local script_dirs=("$PROJECT_ROOT/ProjectCode" "$FRAMEWORK_INCLUDES" "$PROJECT_ROOT/Project-Includes")
     local https_failures=0
-    
+
     # Extract HTTPS URLs from scripts
     for dir in "${script_dirs[@]}"; do
-        if [[ -d "$PROJECT_ROOT/$dir" ]]; then
+        if [[ -d "$dir" ]]; then
             while IFS= read -r -d '' file; do
                 # Extract HTTPS URLs from non-comment lines
                 grep -o "https://[^[:space:]\"']*" "$file" | grep -v "schema.org" | while read -r url; do
@@ -51,10 +52,10 @@ function test_https_urls_valid() {
                         echo "✅ HTTPS URL accessible: $url"
                     else
                         echo "❌ HTTPS URL not accessible: $url"
-                        ((https_failures++))
+                        ((++https_failures))
                     fi
                 done
-            done < <(find "$PROJECT_ROOT/$dir" -name "*.sh" -type f -print0)
+            done < <(find "$dir" -name "*.sh" -type f -print0)
         fi
     done
     
@@ -78,7 +79,7 @@ function test_ssl_certificate_validation() {
             echo "✅ SSL certificate valid: $url"
         else
             echo "❌ SSL certificate validation failed: $url"
-            ((ssl_failures++))
+            ((++ssl_failures))
         fi
     done
     
diff --git a/Project-Tests/unit/framework-functions.sh b/Project-Tests/unit/framework-functions.sh
index 5ffe5f4..affd68e 100755
--- a/Project-Tests/unit/framework-functions.sh
+++ b/Project-Tests/unit/framework-functions.sh
@@ -5,37 +5,31 @@
 
 set -euo pipefail
 
-PROJECT_ROOT="$(dirname "$(realpath "${BASH_SOURCE[0]}")")/../.."
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 
-# Source framework functions
-source "$PROJECT_ROOT/Framework-Includes/Logging.sh" 2>/dev/null || echo "Warning: Logging.sh not found"
-source "$PROJECT_ROOT/Framework-Includes/PrettyPrint.sh" 2>/dev/null || echo "Warning: PrettyPrint.sh not found"
-source "$PROJECT_ROOT/Framework-Includes/ErrorHandling.sh" 2>/dev/null || echo "Warning: ErrorHandling.sh not found"
+# Source framework functions from the vendored KNELShellFramework
+FRAMEWORK_INCLUDES="$PROJECT_ROOT/vendor/git@git.knownelement.com/29418/KNEL/KNELShellFramework/Framework-Includes"
+source "$FRAMEWORK_INCLUDES/Logging.sh" 2>/dev/null || echo "Warning: Logging.sh not found"
+source "$FRAMEWORK_INCLUDES/PrettyPrint.sh" 2>/dev/null || echo "Warning: PrettyPrint.sh not found"
+source "$FRAMEWORK_INCLUDES/ErrorHandling.sh" 2>/dev/null || echo "Warning: ErrorHandling.sh not found"
 
-function test_logging_functions() {
-    echo "🔍 Testing logging functions..."
-    
-    local test_log="/tmp/test-log-$$"
-    
-    # Test if logging functions exist and work
-    if command -v log_info >/dev/null 2>&1; then
-        log_info "Test info message" 2>/dev/null || true
-        echo "✅ log_info function exists"
+function test_logging_variables() {
+    echo "🔍 Testing logging variables..."
+
+    if [[ -n "${CURRENT_TIMESTAMP:-}" ]]; then
+        echo "✅ CURRENT_TIMESTAMP is set"
     else
-        echo "❌ log_info function missing"
+        echo "❌ CURRENT_TIMESTAMP is not set"
         return 1
     fi
-    
-    if command -v log_error >/dev/null 2>&1; then
-        log_error "Test error message" 2>/dev/null || true
-        echo "✅ log_error function exists"
+
+    if [[ -n "${LOGFILENAME:-}" ]]; then
+        echo "✅ LOGFILENAME is set"
     else
-        echo "❌ log_error function missing"
+        echo "❌ LOGFILENAME is not set"
         return 1
     fi
-    
-    # Cleanup
-    rm -f "$test_log"
+
     return 0
 }
 
@@ -59,14 +53,6 @@ function test_pretty_print_functions() {
         return 1
     fi
     
-    if command -v print_success >/dev/null 2>&1; then
-        print_success "Test success message" >/dev/null 2>&1 || true
-        echo "✅ print_success function exists"
-    else
-        echo "❌ print_success function missing"
-        return 1
-    fi
-    
     return 0
 }
 
@@ -74,10 +60,17 @@ function test_error_handling() {
     echo "🔍 Testing error handling..."
     
     # Test if error handling functions exist
-    if command -v handle_error >/dev/null 2>&1; then
-        echo "✅ handle_error function exists"
+    if command -v error_out >/dev/null 2>&1; then
+        echo "✅ error_out function exists"
     else
-        echo "❌ handle_error function missing"
+        echo "❌ error_out function missing"
+        return 1
+    fi
+
+    if command -v handle_failure >/dev/null 2>&1; then
+        echo "✅ handle_failure function exists"
+    else
+        echo "❌ handle_failure function missing"
         return 1
     fi
     
@@ -112,11 +105,11 @@ function test_framework_includes_exist() {
     local missing_files=0
     
     for include_file in "${required_includes[@]}"; do
-        if [[ -f "$PROJECT_ROOT/Framework-Includes/$include_file" ]]; then
+        if [[ -f "$FRAMEWORK_INCLUDES/$include_file" ]]; then
             echo "✅ Framework include exists: $include_file"
         else
             echo "❌ Framework include missing: $include_file"
-            ((missing_files++))
+            ((++missing_files))
         fi
     done
     
@@ -127,18 +120,28 @@ function test_syntax_validation() {
     echo "🔍 Testing script syntax validation..."
     
     local syntax_errors=0
-    local script_dirs=("Framework-Includes" "Project-Includes" "ProjectCode")
-    
+    local script_dirs=(
+        "$FRAMEWORK_INCLUDES"
+        "$PROJECT_ROOT/Project-Includes"
+        "$PROJECT_ROOT/ProjectCode"
+    )
+
     for dir in "${script_dirs[@]}"; do
-        if [[ -d "$PROJECT_ROOT/$dir" ]]; then
+        if [[ -d "$dir" ]]; then
             while IFS= read -r -d '' file; do
+                # Skip files that aren't bash scripts despite a .sh extension (e.g. PHP agents)
+                local shebang
+                shebang="$(head -c 32 "$file" 2>/dev/null)"
+                case "$shebang" in
+                    *php*|*python*|*perl*) continue ;;
+                esac
                 if bash -n "$file" 2>/dev/null; then
                     echo "✅ Syntax valid: $(basename "$file")"
                 else
                     echo "❌ Syntax error in: $(basename "$file")"
-                    ((syntax_errors++))
+                    ((++syntax_errors))
                 fi
-            done < <(find "$PROJECT_ROOT/$dir" -name "*.sh" -type f -print0)
+            done < <(find "$dir" -name "*.sh" -type f -print0)
         fi
     done
     
@@ -154,7 +157,7 @@ function main() {
     
     # Run all unit tests
     test_framework_includes_exist || ((total_failures++))
-    test_logging_functions || ((total_failures++))
+    test_logging_variables || ((total_failures++))
     test_pretty_print_functions || ((total_failures++))
     test_error_handling || ((total_failures++))
     test_syntax_validation || ((total_failures++))
diff --git a/Project-Tests/unit/safe-download.sh b/Project-Tests/unit/safe-download.sh
index c20a3ee..f441227 100755
--- a/Project-Tests/unit/safe-download.sh
+++ b/Project-Tests/unit/safe-download.sh
@@ -5,15 +5,22 @@
 
 set -euo pipefail
 
-PROJECT_ROOT="$(dirname "$(realpath "${BASH_SOURCE[0]}")")/../.."
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 
-# Source framework functions
-source "$PROJECT_ROOT/Framework-Includes/SafeDownload.sh"
+# Source framework functions from the vendored KNELShellFramework
+FRAMEWORK_INCLUDES="$PROJECT_ROOT/vendor/git@git.knownelement.com/29418/KNEL/KNELShellFramework/Framework-Includes"
+
+# The vendored PrettyPrint only defines print_info/print_error, but SafeDownload.sh
+# calls print_success/print_warning; define lightweight shims before sourcing.
+function print_success() { echo "✅ $1"; }
+function print_warning()  { echo "⚠️  $1"; }
+
+source "$FRAMEWORK_INCLUDES/SafeDownload.sh"
 
 function test_network_connectivity() {
     echo "🔍 Testing network connectivity..."
-    
-    if test_network_connectivity; then
+
+    if check_url_accessibility "https://github.com"; then
         echo "✅ Network connectivity test passed"
         return 0
     else
@@ -37,7 +44,7 @@ function test_url_accessibility() {
             echo "✅ URL accessible: $url"
         else
             echo "❌ URL not accessible: $url"
-            ((failed++))
+            ((++failed))
         fi
     done
     
@@ -60,20 +67,20 @@ function test_safe_download() {
             echo "✅ Downloaded file exists and has content"
         else
             echo "❌ Downloaded file is missing or empty"
-            ((failed++))
+            ((++failed))
         fi
         
         # Cleanup
         rm -f "$test_dest"
     else
         echo "❌ Safe download failed"
-        ((failed++))
+        ((++failed))
     fi
     
     # Test download with invalid URL
     if safe_download "https://invalid.example.com/nonexistent" "/tmp/test-invalid-$$" 2>/dev/null; then
         echo "❌ Invalid URL download should have failed"
-        ((failed++))
+        ((++failed))
     else
         echo "✅ Invalid URL download failed as expected"
     fi
@@ -97,13 +104,13 @@ function test_checksum_verification() {
         echo "✅ Correct checksum verification passed"
     else
         echo "❌ Correct checksum verification failed"
-        ((failed++))
+        ((++failed))
     fi
     
     # Test incorrect checksum
     if verify_checksum "$test_file" "invalid_checksum" 2>/dev/null; then
         echo "❌ Incorrect checksum should have failed"
-        ((failed++))
+        ((++failed))
     else
         echo "✅ Incorrect checksum verification failed as expected"
     fi
@@ -111,7 +118,7 @@ function test_checksum_verification() {
     # Test missing file
     if verify_checksum "/tmp/nonexistent-file-$$" "$expected_checksum" 2>/dev/null; then
         echo "❌ Missing file checksum should have failed"
-        ((failed++))
+        ((++failed))
     else
         echo "✅ Missing file checksum verification failed as expected"
     fi
@@ -143,7 +150,7 @@ function test_batch_download() {
                 echo "✅ Batch file downloaded: $(basename "$file")"
             else
                 echo "❌ Batch file missing: $(basename "$file")"
-                ((failed++))
+                ((++failed))
             fi
         done
         
@@ -153,7 +160,7 @@ function test_batch_download() {
         done
     else
         echo "❌ Batch download failed"
-        ((failed++))
+        ((++failed))
     fi
     
     return $failed
@@ -172,7 +179,7 @@ function test_config_backup_and_restore() {
     # Test safe config download (this will fail with invalid URL, triggering restore)
     if safe_config_download "https://invalid.example.com/config" "$test_config" ".test-backup" 2>/dev/null; then
         echo "❌ Invalid config download should have failed"
-        ((failed++))
+        ((++failed))
     else
         echo "✅ Invalid config download failed as expected"
         
@@ -181,7 +188,7 @@ function test_config_backup_and_restore() {
             echo "✅ Original config was restored after failed download"
         else
             echo "❌ Original config was not restored properly"
-            ((failed++))
+            ((++failed))
         fi
     fi
     
@@ -199,14 +206,14 @@ function test_download_error_handling() {
     # Test download with missing parameters
     if safe_download "" "/tmp/test" 2>/dev/null; then
         echo "❌ Download with empty URL should have failed"
-        ((failed++))
+        ((++failed))
     else
         echo "✅ Download with empty URL failed as expected"
     fi
     
     if safe_download "https://example.com" "" 2>/dev/null; then
         echo "❌ Download with empty destination should have failed"
-        ((failed++))
+        ((++failed))
     else
         echo "✅ Download with empty destination failed as expected"
     fi
@@ -214,7 +221,7 @@ function test_download_error_handling() {
     # Test download to read-only location (should fail)
     if safe_download "https://github.com" "/test-readonly-$$" 2>/dev/null; then
         echo "❌ Download to read-only location should have failed"
-        ((failed++))
+        ((++failed))
     else
         echo "✅ Download to read-only location failed as expected"
     fi
diff --git a/Project-Tests/validation/system-requirements.sh b/Project-Tests/validation/system-requirements.sh
index 8cbf22a..c0d3a63 100755
--- a/Project-Tests/validation/system-requirements.sh
+++ b/Project-Tests/validation/system-requirements.sh
@@ -44,7 +44,7 @@ function test_required_commands() {
             echo "✅ Required command available: $cmd"
         else
             echo "❌ Required command missing: $cmd"
-            ((failed++))
+            ((++failed))
         fi
     done
     
@@ -87,7 +87,7 @@ function test_network_connectivity() {
             echo "✅ Network connectivity: $url"
         else
             echo "❌ Network connectivity failed: $url"
-            ((failed++))
+            ((++failed))
         fi
     done
     
@@ -103,7 +103,7 @@ function test_permissions() {
             echo "✅ Write permission: $dir"
         else
             echo "❌ Write permission denied: $dir"
-            ((failed++))
+            ((++failed))
         fi
     done