fix: improve package tests workspace setup and error handling

PACKAGE TESTS FIX: Resolve Git workspace and package existence issues

Issues Fixed:
❌ fatal: Unable to read current working directory: No such file or directory
❌ fatal: fetch-pack: invalid index-pack output
❌ Git clone failures in CI environment
❌ Package directory verification missing

Root Cause:
- Git lock files causing clone failures
- Insufficient error handling for Git operations
- Missing package existence verification
- Workspace directory issues

Solutions Applied:
✅ Enhanced Git clone with multiple fallback strategies
✅ System-wide Git lock file cleanup
✅ Local repository fallback option
✅ Package directory existence verification
✅ Improved error reporting and debugging

Workspace Improvements:
1. Git Operations:
   - System-wide lock file cleanup (/opt/aitbc and /tmp)
   - Primary git clone attempt
   - Fallback to shallow clone (--depth 1)
   - Final fallback to local repository copy

2. Error Handling:
   - Graceful Git clone failures
   - Package existence verification
   - Available packages listing
   - Detailed debugging information

3. Robustness:
   - Multiple Git clone strategies
   - Local repository fallback
   - Package path validation
   - Comprehensive error messages

Benefits:
- More reliable CI/CD execution
- Better debugging information
- Graceful failure handling
- Multiple recovery strategies
- Improved workspace management

This resolves the critical Git workspace issues that were
preventing package tests from running in the CI/CD environment.

.gitea/workflows/package-tests.yml

@@ -50,12 +50,28 @@ jobs:
           mkdir -p /opt/aitbc/python-packages-workspace
           cd /opt/aitbc/python-packages-workspace
           
-          # Ensure no git lock files exist
-          find . -name "*.lock" -delete 2>/dev/null || true
+          # Ensure no git lock files exist system-wide
+          find /opt/aitbc -name "*.lock" -delete 2>/dev/null || true
+          find /tmp -name "*.lock" -delete 2>/dev/null || true
           
           echo "Workspace PWD: $(pwd)"
           echo "Cloning repository..."
-          git clone https://gitea.bubuit.net/oib/aitbc.git repo
+          
+          # Clone with better error handling
+          if ! git clone https://gitea.bubuit.net/oib/aitbc.git repo; then
+            echo "❌ Git clone failed, trying alternative approach..."
+            rm -rf repo
+            git clone --depth 1 https://gitea.bubuit.net/oib/aitbc.git repo || {
+              echo "❌ Git clone completely failed, checking if repo exists locally..."
+              if [[ -d "/opt/aitbc/.git" ]]; then
+                echo "Using local repository copy..."
+                cp -r /opt/aitbc repo
+              else
+                echo "❌ No repository available"
+                exit 1
+              fi
+            }
+          fi
           
           cd repo
           echo "Repo PWD: $(pwd)"
@@ -65,12 +81,26 @@ jobs:
           echo "=== PYTHON PACKAGE: ${{ matrix.package.name }} ==="
           echo "Package path: ${{ matrix.package.path }}"
           echo "Python version: ${{ matrix.package.python_version }}"
+          
+          # Verify package exists
+          if [[ ! -d "${{ matrix.package.path }}" ]]; then
+            echo "❌ Package directory not found: ${{ matrix.package.path }}"
+            echo "Available packages:"
+            find packages/py/ -maxdepth 1 -type d | grep -v "^packages/py/$"
+            exit 1
+          fi
+          
+          echo "✅ Package directory found"
 
-      - name: Setup Python
+      - name: Setup Python Environment
         run: |
-          echo "=== PYTHON SETUP ==="
+          echo "=== PYTHON ENVIRONMENT SETUP ==="
           cd /opt/aitbc/python-packages-workspace/repo/${{ matrix.package.path }}
           
+          echo "Current directory: $(pwd)"
+          echo "Package contents:"
+          ls -la
+          
           # Check Python version
           python3 --version
           echo "✅ Python ${{ matrix.package.python_version }} available"