feat: add runtime event handling for providers in ProvidersSection
feat: update routing to include Channels and Agents pages
feat: extend route types and navigation items for Channels and Agents
feat: implement agents store for managing agent data and interactions
fix: update chat store to utilize agents store for agent-related functionality
chore: export agents store from index
fix: enhance runtime types for better event handling
fix: update Vite config to handle dev server URL correctly
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