fix: resolve systemd path issues in CI/CD workflows

SYSTEMD PATH FIX: Correct repository path for systemd sync in CI environments

Issue Fixed:
❌ Repository systemd directory not found: /opt/aitbc/systemd
❌ CI workflows looking for wrong repository path
❌ Systemd sync failing in CI environments

Root Cause:
- CI workflows clone repository to workspace directories
- Systemd sync script hardcoded to /opt/aitbc/systemd
- Repository actually in /opt/aitbc/*-workspace/repo/systemd
- Path mismatch causing sync failures

Solution Applied:
✅ Dynamic path updates in all workflows
✅ sed commands to update REPO_SYSTEMD_DIR at runtime
✅ Correct paths for each workflow workspace
✅ Fallback manual sync with correct paths

Fixed Workflows:
1. systemd-sync.yml:
   - Updated to use /opt/aitbc/systemd-sync-workspace/repo/systemd
   - Dynamic path update before running script

2. integration-tests.yml:
   - Updated to use /opt/aitbc/integration-tests-workspace/repo/systemd
   - Dynamic path update before running script

3. api-endpoint-tests.yml:
   - Updated to use /opt/aitbc/api-tests-workspace/repo/systemd
   - Dynamic path update before running script

Changes Made:
- Added sed commands to update REPO_SYSTEMD_DIR
- Each workflow uses its own workspace path
- Maintains original script functionality
- Preserves fallback manual sync

Impact:
- Systemd sync now works in CI environments
- Service-dependent workflows can start services
- Integration and API tests can run properly
- No more path-related failures

This resolves the critical path issue that was preventing
systemd sync and service-dependent workflows from working
in the CI/CD environment.

.gitea/workflows/api-endpoint-tests.yml

@@ -58,6 +58,8 @@ jobs:
           # Ensure systemd files are synced
           if [[ -f "scripts/link-systemd.sh" ]]; then
             echo "🔗 Syncing systemd files..."
+            # Update script with correct repository path
+            sed -i "s|REPO_SYSTEMD_DIR=\"/opt/aitbc/systemd\"|REPO_SYSTEMD_DIR=\"/opt/aitbc/api-tests-workspace/repo/systemd\"|g" scripts/link-systemd.sh
             sudo ./scripts/link-systemd.sh
           else
             echo "⚠️  Systemd sync script not found"