fix: resolve CI linting issues - remove unused imports and f-strings

app/.env.example

@@ -0,0 +1,24 @@
+# CLI Command Memory Environment Variables
+# Copy this file to .env and modify as needed
+
+# Base directory for storing data (default: ~/.cli_memory)
+CLI_MEMORY_HOME=~/.cli_memory
+
+# Logging level: debug, info, warning, error (default: info)
+LOG_LEVEL=info
+
+# Max commands to store per workflow (default: 100)
+MAX_WORKFLOW_COMMANDS=100
+
+# Number of suggestions to return (default: 10)
+MAX_SUGGESTIONS=10
+
+# Enable autocomplete integration (default: true)
+ENABLE_AUTOCOMPLETE=true
+
+# Database path override (optional)
+# DATABASE_PATH=~/.cli_memory/custom_db.db
+
+# API keys for future features (optional)
+# GITHUB_TOKEN=
+# GITLAB_TOKEN=