fix: use --no-root flag to skip project packaging installation

BREAKTHROUGH: Poetry working but project packaging configuration incomplete

Issue: 'No file/folder found for package aitbc-cli'
Root cause: Project has packaging configuration but missing package structure
Solution: Use --no-root flag to install dependencies only

Changes:
- Add --no-root flag to poetry install commands
- Skip current project installation, only install dependencies
- Maintain all other functionality (security scanning, etc.)
- This avoids packaging configuration issues while enabling dependency management

Updated workflows:
- audit.yml: poetry install --no-root + audit
- fix.yml: poetry install --no-root + safety fixes
- security-scanning.yml: poetry install --no-root + security scans

Expected results:
- Dependencies installed successfully without packaging errors
- Security tools working in project venv
- All workflows completing successfully
- Complete CI/CD pipeline functional

This resolves the packaging configuration issue while maintaining
full dependency management and security scanning capabilities.

.gitea/workflows/audit.yml

@@ -85,9 +85,9 @@ jobs:
             echo "Pip in venv: $(pip --version)"
             
             echo "=== PYTHON DEPENDENCIES ==="
-            # Use poetry to install project dependencies
-            echo "Installing project dependencies with poetry..."
-            $POETRY_CMD install
+            # Use poetry to install dependencies only (skip current project)
+            echo "Installing dependencies with poetry (no-root mode)..."
+            $POETRY_CMD install --no-root
             
             echo "✅ Python dependencies installed!"
           else

.gitea/workflows/fix.yml

@@ -83,9 +83,9 @@ jobs:
             echo "Pip in venv: $(pip --version)"
             
             echo "=== PYTHON DEPENDENCIES ==="
-            # Use poetry to install project dependencies
-            echo "Installing project dependencies with poetry..."
-            $POETRY_CMD install
+            # Use poetry to install dependencies only (skip current project)
+            echo "Installing dependencies with poetry (no-root mode)..."
+            $POETRY_CMD install --no-root
             
             echo "✅ Python dependencies installed!"
             echo "=== SECURITY FIXES ==="

.gitea/workflows/security-scanning.yml

@@ -83,9 +83,9 @@ jobs:
             echo "Pip in venv: $(pip --version)"
             
             echo "=== PYTHON DEPENDENCIES ==="
-            # Use poetry to install project dependencies
-            echo "Installing project dependencies with poetry..."
-            $POETRY_CMD install
+            # Use poetry to install dependencies only (skip current project)
+            echo "Installing dependencies with poetry (no-root mode)..."
+            $POETRY_CMD install --no-root
             
             echo "✅ Running security scan..."
             venv/bin/pip install safety bandit