Implement Rust web sidebar title and tree interactions

rust/crates/core-protocol/src/ai.rs

@@ -0,0 +1,68 @@
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "camelCase")]
+pub struct AiSession {
+    pub session_id: String,
+    pub workspace_id: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub document_id: Option<String>,
+    pub owner: AiRuntimeOwner,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "kebab-case")]
+pub enum AiRuntimeOwner {
+    RustWebHermes,
+    CompatReactIsland,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct AiToolCall {
+    pub call_id: String,
+    pub tool_name: String,
+    pub args: Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct AiEvent {
+    pub event_id: String,
+    pub session_id: String,
+    pub kind: AiEventKind,
+    #[serde(default)]
+    pub payload: Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "camelCase")]
+pub enum AiEventKind {
+    SessionCreated,
+    ToolCallPlanned,
+    ToolCallApplied,
+    StructuredWriteCompleted,
+    Error,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "camelCase")]
+pub struct AiStructuredWriteResult {
+    pub ok: bool,
+    pub write_kind: AiStructuredWriteKind,
+    pub command_name: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub target_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub revision: Option<u64>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "camelCase")]
+pub enum AiStructuredWriteKind {
+    SummaryNode,
+    AiNoteNode,
+    ReferenceEdge,
+    PageBody,
+}