// All this file should be replaced by the existing fragment implementation ofc#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]pub enum PromptSlot {    DeveloperPolicy,    DeveloperCapabilities,    ContextualUser,    SeparateDeveloper,}#[derive(Clone, Debug, PartialEq, Eq)]pub struct PromptFragment {    slot: PromptSlot,    text: String,}impl PromptFragment {    /// Creates a prompt fragment for the given slot.    pub fn new(slot: PromptSlot, text: impl Into<String>) -> Self {        Self {            slot,            text: text.into(),        }    }    /// Creates a developer-policy prompt fragment.    pub fn developer_policy(text: impl Into<String>) -> Self {        Self::new(PromptSlot::DeveloperPolicy, text)    }    /// Creates a developer-capabilities prompt fragment.    pub fn developer_capability(text: impl Into<String>) -> Self {        Self::new(PromptSlot::DeveloperCapabilities, text)    }    /// Creates a separate top-level developer prompt fragment.    pub fn separate_developer(text: impl Into<String>) -> Self {        Self::new(PromptSlot::SeparateDeveloper, text)    }    /// Returns the target prompt slot.    pub fn slot(&self) -> PromptSlot {        self.slot    }    /// Returns the model-visible text.    pub fn text(&self) -> &str {        &self.text    }}