Renames functions and variables to use "agent" terminology instead of "webhook" for consistency with updated architecture. Removes unused preprocessing workflows and streamlines the ChatSdk code. This improves code clarity and aligns naming with system functionality.
Deleted unused or commented-out code across multiple files to improve clarity and maintainability. Updated `kv_namespaces` in `wrangler.toml` and specified the package manager in `package.json`. Add placeholder values for development kv stores.
