diff --git a/.gitea/workflows/security.yml b/.gitea/workflows/security.yml
index 9f930b5..bd3800a 100644
--- a/.gitea/workflows/security.yml
+++ b/.gitea/workflows/security.yml
@@ -63,16 +63,16 @@ jobs:
 
       - name: Check for critical vulnerabilities
         run: |
-          echo "🔍 Checking for critical vulnerabilities..."
+          echo "Checking for critical vulnerabilities..."
 
           # Check Safety results
           if [ -f safety-report.json ]; then
             critical_count=$(jq '.vulnerabilities | length' safety-report.json 2>/dev/null || echo "0")
             if [ "$critical_count" -gt 0 ]; then
-              echo "⚠️ Found $critical_count dependency vulnerabilities"
+              echo "Found $critical_count dependency vulnerabilities"
               jq '.vulnerabilities[] | "- \(.package_name) \(.installed_version): \(.vulnerability_id)"' safety-report.json
             else
-              echo "✅ No dependency vulnerabilities found"
+              echo "No dependency vulnerabilities found"
             fi
           fi
 
@@ -80,88 +80,9 @@ jobs:
           if [ -f bandit-report.json ]; then
             high_severity=$(jq '.results[] | select(.issue_severity == "HIGH") | length' bandit-report.json 2>/dev/null | wc -l)
             if [ "$high_severity" -gt 0 ]; then
-              echo "⚠️ Found $high_severity high-severity security issues"
+              echo "Found $high_severity high-severity security issues"
             else
-              echo "✅ No high-severity security issues found"
-            fi
-          fi
-
-  # Docker image security scan
-  docker-security-scan:
-    name: Docker Security Scan
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-        with:
-          token: ${{ secrets.CI_BOT_TOKEN }}
-
-      - name: Check GitHub token availability
-        run: |
-          if [ -z "${{ secrets.GH_TOKEN }}" ]; then
-            echo "⚠️ GH_TOKEN not configured. Trivy scans may fail due to rate limits."
-            echo "💡 To fix: Add GH_TOKEN secret in repository settings"
-          else
-            echo "✅ GH_TOKEN is configured"
-          fi
-
-      - name: Build Docker image for scanning
-        run: |
-          docker build -t ping-river-monitor:scan .
-        env:
-          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
-
-      - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
-        with:
-          image-ref: "ping-river-monitor:scan"
-          format: "json"
-          output: "trivy-report.json"
-          github-token: ${{ secrets.GH_TOKEN }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
-        continue-on-error: true
-
-      - name: Run Trivy filesystem scan
-        uses: aquasecurity/trivy-action@master
-        with:
-          scan-type: "fs"
-          scan-ref: "."
-          format: "json"
-          output: "trivy-fs-report.json"
-          github-token: ${{ secrets.GH_TOKEN }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
-        continue-on-error: true
-
-      - name: Upload Trivy reports
-        uses: actions/upload-artifact@v3
-        if: always()
-        with:
-          name: trivy-reports-${{ github.run_number }}
-          path: |
-            trivy-report.json
-            trivy-fs-report.json
-
-      - name: Check Trivy results
-        run: |
-          echo "🔍 Analyzing Docker security scan results..."
-
-          if [ -f trivy-report.json ]; then
-            critical_vulns=$(jq '.Results[]?.Vulnerabilities[]? | select(.Severity == "CRITICAL") | length' trivy-report.json 2>/dev/null | wc -l)
-            high_vulns=$(jq '.Results[]?.Vulnerabilities[]? | select(.Severity == "HIGH") | length' trivy-report.json 2>/dev/null | wc -l)
-            
-            echo "Critical vulnerabilities: $critical_vulns"
-            echo "High vulnerabilities: $high_vulns"
-            
-            if [ "$critical_vulns" -gt 0 ]; then
-              echo "❌ Critical vulnerabilities found in Docker image!"
-              exit 1
-            elif [ "$high_vulns" -gt 5 ]; then
-              echo "⚠️ Many high-severity vulnerabilities found"
-            else
-              echo "✅ Docker image security scan passed"
+              echo "No high-severity security issues found"
             fi
           fi
 
@@ -189,7 +110,7 @@ jobs:
 
       - name: Check licenses
         run: |
-          echo "📄 Checking dependency licenses..."
+          echo "Checking dependency licenses..."
           pip-licenses --format=json --output-file=licenses.json
           pip-licenses --format=markdown --output-file=licenses.md
 
@@ -198,11 +119,11 @@ jobs:
 
           for license in "${problematic_licenses[@]}"; do
             if grep -i "$license" licenses.json; then
-              echo "⚠️ Found potentially problematic license: $license"
+              echo "Found potentially problematic license: $license"
             fi
           done
 
-          echo "✅ License check completed"
+          echo "License check completed"
 
       - name: Upload license report
         uses: actions/upload-artifact@v3
@@ -235,56 +156,15 @@ jobs:
 
       - name: Check for outdated packages
         run: |
-          echo "📦 Checking for outdated packages..."
+          echo "Checking for outdated packages..."
           pip install --root-user-action=ignore -r requirements.txt
           pip list --outdated --format=json > outdated-packages.json || true
 
           if [ -s outdated-packages.json ]; then
-            echo "📋 Outdated packages found:"
+            echo "Outdated packages found:"
             cat outdated-packages.json | jq -r '.[] | "- \(.name): \(.version) -> \(.latest_version)"'
           else
-            echo "✅ All packages are up to date"
-          fi
-
-      - name: Create dependency update issue
-        if: github.event_name == 'schedule'
-        run: |
-          if [ -s outdated-packages.json ] && [ "$(cat outdated-packages.json)" != "[]" ]; then
-            echo "📝 Creating dependency update issue..."
-            
-            # Create issue body
-            cat > issue-body.md << 'EOF'
-          ## 📦 Dependency Updates Available
-
-          The following packages have updates available:
-
-          EOF
-            
-            cat outdated-packages.json | jq -r '.[] | "- **\(.name)**: \(.version) → \(.latest_version)"' >> issue-body.md
-            
-            cat >> issue-body.md << 'EOF'
-
-          ## 🔍 Security Impact
-
-          Please review each update for:
-          - Security fixes
-          - Breaking changes
-          - Compatibility issues
-
-          ## ✅ Action Items
-
-          - [ ] Review changelog for each package
-          - [ ] Test updates in development environment
-          - [ ] Update requirements.txt
-          - [ ] Run full test suite
-          - [ ] Deploy to staging for validation
-
-          ---
-          *This issue was automatically created by the security workflow.*
-          EOF
-            
-            echo "Issue body created. In a real implementation, you would create a Gitea issue here."
-            cat issue-body.md
+            echo "All packages are up to date"
           fi
 
       - name: Upload dependency reports
@@ -293,7 +173,6 @@ jobs:
           name: dependency-reports-${{ github.run_number }}
           path: |
             outdated-packages.json
-            issue-body.md
 
   # Code quality metrics
   code-quality:
@@ -319,24 +198,24 @@ jobs:
 
       - name: Calculate code complexity
         run: |
-          echo "📊 Calculating code complexity..."
+          echo "Calculating code complexity..."
           radon cc src/ --json > complexity-report.json
           radon mi src/ --json > maintainability-report.json
 
-          echo "🔍 Complexity Summary:"
+          echo "Complexity Summary:"
           radon cc src/ --average
 
-          echo "🔧 Maintainability Summary:"
+          echo "Maintainability Summary:"
           radon mi src/
 
       - name: Find dead code
         run: |
-          echo "🧹 Checking for dead code..."
+          echo "Checking for dead code..."
           vulture src/ --json > dead-code-report.json || true
 
       - name: Check for code smells
         run: |
-          echo "👃 Checking for code smells..."
+          echo "Checking for code smells..."
           xenon --max-absolute B --max-modules A --max-average A src/ || true
 
       - name: Upload quality reports
@@ -352,7 +231,7 @@ jobs:
   security-summary:
     name: Security Summary
     runs-on: ubuntu-latest
-    needs: [dependency-scan, docker-security-scan, license-check, code-quality]
+    needs: [dependency-scan, license-check, code-quality]
     if: always()
 
     steps:
@@ -361,51 +240,47 @@ jobs:
 
       - name: Generate security summary
         run: |
-          echo "# 🔒 Security Scan Summary" > security-summary.md
+          echo "# Security Scan Summary" > security-summary.md
           echo "" >> security-summary.md
           echo "**Scan Date:** $(date -u)" >> security-summary.md
           echo "**Repository:** ${{ github.repository }}" >> security-summary.md
           echo "**Commit:** ${{ github.sha }}" >> security-summary.md
           echo "" >> security-summary.md
 
-          echo "## 📊 Results" >> security-summary.md
+          echo "## Results" >> security-summary.md
           echo "" >> security-summary.md
 
           # Dependency scan results
           if [ -f security-reports-*/safety-report.json ]; then
             vuln_count=$(jq '.vulnerabilities | length' security-reports-*/safety-report.json 2>/dev/null || echo "0")
             if [ "$vuln_count" -eq 0 ]; then
-              echo "- ✅ **Dependency Scan**: No vulnerabilities found" >> security-summary.md
+              echo "- Dependency Scan: No vulnerabilities found" >> security-summary.md
             else
-              echo "- ⚠️ **Dependency Scan**: $vuln_count vulnerabilities found" >> security-summary.md
+              echo "- Dependency Scan: $vuln_count vulnerabilities found" >> security-summary.md
             fi
           else
-            echo "- ❓ **Dependency Scan**: Results not available" >> security-summary.md
+            echo "- Dependency Scan: Results not available" >> security-summary.md
           fi
 
-          # Docker scan results
-          if [ -f trivy-reports-*/trivy-report.json ]; then
-            echo "- ✅ **Docker Scan**: Completed" >> security-summary.md
-          else
-            echo "- ❓ **Docker Scan**: Results not available" >> security-summary.md
-          fi
+          # Docker scan results (removed Trivy)
+          echo "- Docker Scan: Skipped (Trivy removed)" >> security-summary.md
 
           # License check results
           if [ -f license-report-*/licenses.json ]; then
-            echo "- ✅ **License Check**: Completed" >> security-summary.md
+            echo "- License Check: Completed" >> security-summary.md
           else
-            echo "- ❓ **License Check**: Results not available" >> security-summary.md
+            echo "- License Check: Results not available" >> security-summary.md
           fi
 
           # Code quality results
           if [ -f code-quality-reports-*/complexity-report.json ]; then
-            echo "- ✅ **Code Quality**: Analyzed" >> security-summary.md
+            echo "- Code Quality: Analyzed" >> security-summary.md
           else
-            echo "- ❓ **Code Quality**: Results not available" >> security-summary.md
+            echo "- Code Quality: Results not available" >> security-summary.md
           fi
 
           echo "" >> security-summary.md
-          echo "## 🔗 Detailed Reports" >> security-summary.md
+          echo "## Detailed Reports" >> security-summary.md
           echo "" >> security-summary.md
           echo "Detailed reports are available in the workflow artifacts." >> security-summary.md
 
@@ -415,4 +290,4 @@ jobs:
         uses: actions/upload-artifact@v3
         with:
           name: security-summary-${{ github.run_number }}
-          path: security-summary.md
+          path: security-summary.md
\ No newline at end of file
diff --git a/setup.py b/setup.py
index b8f8c92..2f2be3c 100644
--- a/setup.py
+++ b/setup.py
@@ -11,8 +11,18 @@ with open("README.md", "r", encoding="utf-8") as fh:
     long_description = fh.read()
 
 # Read requirements
-with open("requirements.txt", "r", encoding="utf-8") as fh:
-    requirements = [line.strip() for line in fh if line.strip() and not line.startswith("#")]
+try:
+    with open("requirements.txt", "r", encoding="utf-8") as fh:
+        requirements = [line.strip() for line in fh if line.strip() and not line.startswith("#")]
+except FileNotFoundError:
+    # Fallback to minimal requirements if file not found
+    requirements = [
+        "requests>=2.31.0",
+        "schedule>=1.2.0",
+        "pandas>=2.1.0",
+        "fastapi>=0.104.0",
+        "uvicorn>=0.24.0",
+    ]
 
 # Extract core requirements (exclude dev dependencies)
 core_requirements = []