fix: release-check lint fixes for 1.1.0 publish

Wrap long lines for flake8, rename extensions remove command handler
to avoid Click shadowing, and drop unused migration imports.

src/kaizen_agentic/cli.py

@@ -135,8 +135,14 @@ def safe_cli_wrapper():
 _FEEDBACK_CHANNELS = {
     "issues": "https://gitea.coulomb.social/coulomb/kaizen-agentic/issues",
     "issue_templates": "https://gitea.coulomb.social/coulomb/kaizen-agentic/issues/new/choose",
-    "feedback_guide": "https://gitea.coulomb.social/coulomb/kaizen-agentic/src/branch/main/docs/FEEDBACK.md",
-    "contributing": "https://gitea.coulomb.social/coulomb/kaizen-agentic/src/branch/main/CONTRIBUTING.md",
+    "feedback_guide": (
+        "https://gitea.coulomb.social/coulomb/kaizen-agentic/"
+        "src/branch/main/docs/FEEDBACK.md"
+    ),
+    "contributing": (
+        "https://gitea.coulomb.social/coulomb/kaizen-agentic/"
+        "src/branch/main/CONTRIBUTING.md"
+    ),
 }
 
 
@@ -154,7 +160,10 @@ def feedback(as_json: bool):
     payload = {
         "channels": _FEEDBACK_CHANNELS,
         "templates": ["bug_report", "feature_request", "feedback"],
-        "cli_hint": "Use Gitea issue templates or State Hub messages for cross-repo coordination",
+        "cli_hint": (
+            "Use Gitea issue templates or State Hub messages "
+            "for cross-repo coordination"
+        ),
     }
     if as_json:
         click.echo(json.dumps(payload, indent=2, sort_keys=True))
@@ -794,11 +803,11 @@ def disable(name: str, target: str):
         click.echo(f"❌ Extension not found: {name}")
 
 
-@extensions.command()
+@extensions.command("remove")
 @click.argument("name")
 @click.option("--target", "-t", default=".", help="Target directory (default: current)")
 @click.confirmation_option(prompt="Are you sure you want to remove this extension?")
-def remove(name: str, target: str):
+def remove_extension(name: str, target: str):
     """Remove an extension."""
     from .extensions import ExtensionManager
 
@@ -1173,7 +1182,8 @@ def metrics_optimize(agent_name: Optional[str], target: str, min_samples: int):
             )
         else:
             click.echo(
-                f"  Note: {len(records)} record(s) — need {min_samples} for actionable recommendations"
+                f"  Note: {len(records)} record(s) — "
+                f"need {min_samples} for actionable recommendations"
             )
         click.echo()