fix(test): add temp directory and DB bootstrap to project list scenario

The 'Test project list command with no projects' scenario was missing a
Given step to set up a writable working directory. Without it, the
container fell back to CWD/.cleveragents/db.sqlite which could not be
opened (directory did not exist), causing sqlite3.OperationalError.

- Add 'Given I have a temporary working directory' to the scenario
- Bootstrap the SQLite schema in the When step so the ns_projects table
  exists for the empty-list query

features/project_commands_coverage.feature

@@ -97,6 +97,7 @@ Feature: Project Commands Coverage
 
   @phase1
   Scenario: Test project list command with no projects
+    Given I have a temporary working directory
     When I run project list command
     Then the project list output should contain "No projects found"
 

features/steps/project_commands_coverage_steps.py

@@ -274,7 +274,33 @@ def step_execute_project_status_error(context):
 
 @when("I run project list command")
 def step_run_project_list(context):
-    """Run project list command."""
+    """Run project list command.
+
+    Ensures the default database path is writable by creating the
+    ``.cleveragents`` directory and bootstrapping the schema so the
+    ``list`` sub-command can query the ``ns_projects`` table even
+    when no projects exist.
+    """
+    import os
+
+    from sqlalchemy import create_engine
+
+    from cleveragents.infrastructure.database.models import Base
+
+    # Ensure the fallback database directory exists inside the temp CWD
+    db_dir = Path.cwd() / ".cleveragents"
+    db_dir.mkdir(parents=True, exist_ok=True)
+    db_path = db_dir / "db.sqlite"
+
+    # Point the container at this database so it doesn't fail on open
+    db_url = f"sqlite:///{db_path.absolute()}"
+    os.environ["CLEVERAGENTS_DATABASE_URL"] = db_url
+
+    # Bootstrap the schema so the table exists for the query
+    engine = create_engine(db_url, echo=False)
+    Base.metadata.create_all(engine)
+    engine.dispose()
+
     runner = CliRunner()
     result = runner.invoke(project.app, ["list"])
     context.result = result