6736e59: Fixed environment variable parsing for boolean values:

• Fixed ZodError when parsing boolean environment variables (SAMPLING_ENABLED, RESPOND_TO_MENTIONS_ONLY, BLOCK_DMS, REACTION_SAMPLING_ENABLED)
• Environment variables are now properly coerced from strings to their expected types

88d3e12: Enhanced sampling with dynamic reactions, message filtering, and improved UX:

• Optional AI-Generated Reactions: Bot can optionally request contextual emoji reactions from AI when mentioned (disabled by default, opt-in via REACTION_SAMPLING_ENABLED)
  • REACTION_SAMPLING_ENABLED (default: false) - Enable AI-generated contextual reactions (must be manually enabled). When disabled, no reaction is added.
  • REACTION_TIMEOUT_MS (default: 3000) - Configurable timeout for reaction sampling requests
  • REACTION_FALLBACK_EMOJI (default: "🤔") - Customizable fallback emoji when sampling times out or fails
• Message Replies: All bot responses now use Discord's reply feature instead of direct channel sends for better context and conversation threading
• Advanced Message Filtering: New configuration options to control bot behavior:
  • RESPOND_TO_MENTIONS_ONLY (default: true) - Only respond when bot is mentioned
  • BLOCK_DMS (default: true) - Block all direct messages
  • BLOCKED_GUILDS - Comma-separated list of guild IDs to ignore
  • BANNED_USERS - Comma-separated list of user IDs to ban
• Code Quality: Refactored config parsing to reduce complexity and improve maintainability