feat: prepare agen crates for publication

crates/memory/Cargo.toml

@@ -9,7 +9,7 @@ async-trait = { workspace = true }
 chrono = { version = "0.4", features = ["serde"] }
 libc = { workspace = true }
 lint-common = { workspace = true }
-llm-engine = { workspace = true }
+agen = { workspace = true }
 manifest = { workspace = true }
 schemars = { workspace = true }
 serde = { workspace = true, features = ["derive"] }

crates/memory/README.md

@@ -17,7 +17,7 @@ Owns:
 Does not own:
 
 - authoritative project records (`.yoi/tickets/`, git history)
-- normal Worker turn orchestration (`llm-engine`)
+- normal Worker turn orchestration (`agen`)
 - product CLI command shape (`yoi`)
 - curated workflow definitions (`workflow`)
 

crates/memory/src/extract/input.rs

@@ -5,7 +5,7 @@
 //! tool result は summary のみ）。conversation 全体を Markdown の単一
 //! セクションとして渡し、抽出指示は system prompt 側に寄せる。
 
-use llm_engine::Item;
+use agen::Item;
 
 /// 与えられた `items` を extract sub-Engine の最初の user 入力に整形する。
 pub fn build_extract_input(items: &[Item]) -> String {
@@ -26,9 +26,9 @@ fn render_items(items: &[Item]) -> String {
         match item {
             Item::Message { role, content, .. } => {
                 let role_label = match role {
-                    llm_engine::Role::User => "User",
-                    llm_engine::Role::Assistant => "Assistant",
-                    llm_engine::Role::System => "System",
+                    agen::Role::User => "User",
+                    agen::Role::Assistant => "Assistant",
+                    agen::Role::System => "System",
                 };
                 let text: String = content
                     .iter()

crates/memory/src/extract/tool.rs

@@ -7,8 +7,8 @@
 
 use std::sync::{Arc, Mutex};
 
+use agen::tool::{Tool, ToolDefinition, ToolError, ToolMeta, ToolOutput};
 use async_trait::async_trait;
-use llm_engine::tool::{Tool, ToolDefinition, ToolError, ToolMeta, ToolOutput};
 
 use crate::extract::payload::ExtractedPayload;
 
@@ -57,7 +57,7 @@ impl Tool for WriteExtractedTool {
     async fn execute(
         &self,
         input_json: &str,
-        _ctx: llm_engine::tool::ToolExecutionContext,
+        _ctx: agen::tool::ToolExecutionContext,
     ) -> Result<ToolOutput, ToolError> {
         let payload: ExtractedPayload = serde_json::from_str(input_json).map_err(|e| {
             ToolError::InvalidArgument(format!("invalid write_extracted input: {e}"))
@@ -107,7 +107,7 @@ pub fn write_extracted_tool(ctx: Arc<ExtractWorkerContext>) -> ToolDefinition {
 mod tests {
     use super::*;
 
-    use llm_engine::tool::Tool;
+    use agen::tool::Tool;
 
     #[tokio::test]
     async fn write_extracted_records_payload() {