fix: resolve CI type annotation issues

- Replaced deprecated typing.List/Dict/Tuple with native list/dict/tuple
- Fixed trailing whitespace issues
- Fixed blank line whitespace issues
- Removed unused variables and imports
- Applied black formatting

src/nl2gherkin/cli/interactive.py

@@ -1,7 +1,5 @@
 """Interactive mode for the NL2Gherkin CLI."""
 
-from typing import List
-
 import click
 
 from nl2gherkin.exporters.base import BaseExporter
@@ -21,8 +19,8 @@ def run_interactive_session(exporter: BaseExporter) -> None:
     parser = GherkinParser()
     generator = GherkinGenerator(parser)
 
-    history: List[dict] = []
+    history: list[dict] = []
-    generated_scenarios: List[str] = []
+    generated_scenarios: list[str] = []
 
     click.echo("\n[NL2Gherkin Interactive Mode]")
     click.echo("Enter your requirements (press Ctrl+C to exit)")
@@ -95,7 +93,7 @@ def run_interactive_session(exporter: BaseExporter) -> None:
 
             ambiguities = analyzer.analyze_ambiguity(requirement)
             if ambiguities:
-                click.echo(_colorize("[WARNING] Potential ambiguities:", "yellow"))
+                click.echo(_colorize("\n[WARNING] Potential ambiguities:", "yellow"))
                 for amb in ambiguities:
                     click.echo(f"  - {amb.message}")
                     if amb.suggestion: