Add IMAP settings to configuration and enhance email processing logic

README.md

@@ -42,6 +42,16 @@ go build -o paraclub-ai-mailer ./cmd/paraclub-ai-mailer
 
 The application uses a YAML configuration file (`config.yaml`) with the following structure:
 
+### IMAP Settings
+- `server`: IMAP server hostname (e.g., "imap.gmail.com")
+- `port`: IMAP port (typically 993 for TLS)
+- `username`: Your email address
+- `password`: Email password (use ${IMAP_PASSWORD} to load from environment)
+- `mailbox_in`: Mailbox to check for new emails (e.g., "INBOX")
+- `draft_box`: Folder to save AI-generated drafts (e.g., "Drafts")
+- `processed_box`: Folder to move processed emails to (they will also be marked as read)
+- `use_tls`: Whether to use TLS for connection (recommended: true)
+
 ```yaml
 imap:
   server: "imap.example.com"
@@ -111,7 +121,7 @@ Or specify a custom config file path:
    - Retrieves HTML content from configured URLs
    - Sends combined content to OpenRouter AI for response generation
    - Saves the AI-generated response as a draft email
-   - Marks the original email as processed
+   - Marks the original email as read and moves it to the configured processed folder
 
 ## Logging