feat: add agent publishing foundation

crates/crank-core/src/agent.rs

@@ -0,0 +1,47 @@
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+use crate::ids::{AgentId, OperationId, WorkspaceId};
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum AgentStatus {
+    Draft,
+    Published,
+    Archived,
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Agent {
+    pub id: AgentId,
+    pub workspace_id: WorkspaceId,
+    pub slug: String,
+    pub display_name: String,
+    pub description: String,
+    pub status: AgentStatus,
+    pub current_draft_version: u32,
+    pub latest_published_version: Option<u32>,
+    pub created_at: String,
+    pub updated_at: String,
+    pub published_at: Option<String>,
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub struct AgentVersion {
+    pub agent_id: AgentId,
+    pub version: u32,
+    pub status: AgentStatus,
+    pub instructions: Value,
+    pub tool_selection_policy: Value,
+    pub created_at: String,
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub struct AgentOperationBinding {
+    pub operation_id: OperationId,
+    pub operation_version: u32,
+    pub tool_name: String,
+    pub tool_title: String,
+    pub tool_description_override: Option<String>,
+    pub enabled: bool,
+}