Summary

Inconsistent error messages across the codebase.

Current State

Issues identified:

• Some multiline with embedded instructions
• Inconsistent capitalization
• Some with trailing punctuation

Examples:

• internal/gmail/client.go:45 - Multiline error with \n\nPlease download...
• Various files mix lowercase/uppercase starts

// Current inconsistent styles:
return fmt.Errorf("Unable to read credentials file at %s: %w\n\nPlease download...", path, err)
return fmt.Errorf("failed to get message: %w", err)
return fmt.Errorf("Attachment not found.")

Proposed Solution

Follow Go conventions consistently:

• Lowercase start
• No trailing punctuation
• No embedded instructions (put in help text)

// Correct style:
return fmt.Errorf("failed to read credentials file: %w", err)
return fmt.Errorf("attachment not found: %s", filename)

Priority

P3 - Code consistency