Fix majority of linting issues

- Replace bare except clauses with except Exception
- Remove unused imports
- Fix f-strings without placeholders
- Fix whitespace issues (E203: no space before colon in slicing)
- Apply black formatting with 79 character line limit
- Remove trailing whitespace

Reduced linting errors from 206 to 100. Remaining issues are mostly line length (E501) which would require more extensive refactoring.

Author: jeremymanning

clustrix/cli.py

@@ -22,9 +22,18 @@ def cli():
 @click.option("--cores", type=int, help="Default number of cores")
 @click.option("--memory", help="Default memory allocation (e.g., 8GB)")
 @click.option("--time", help="Default time allocation (e.g., 04:00:00)")
-@click.option("--config-file", type=click.Path(), help="Save configuration to file")
+@click.option(
+    "--config-file", type=click.Path(), help="Save configuration to file"
+)
 def config(
-    cluster_type, cluster_host, username, api_key, cores, memory, time, config_file
+    cluster_type,
+    cluster_host,
+    username,
+    api_key,
+    cores,
+    memory,
+    time,
+    config_file,
 ):
     """Configure Clustrix settings."""