fix: echo protocol run inputs

.yoi/tickets/00001KY1ZKCPC/item.md

@@ -2,7 +2,7 @@
 title: 'Backend runtime経由の操作をprotocol transportへ統一しTUI同等にする'
 state: 'planning'
 created_at: '2026-07-21T09:20:07Z'
-updated_at: '2026-07-21T11:42:36Z'
+updated_at: '2026-07-22T02:11:40Z'
 assignee: null
 readiness: 'draft'
 ---

.yoi/tickets/00001KY1ZKCPC/thread.md

@@ -166,3 +166,35 @@ Verification:
 - `git diff --check`
 
 ---
+
+<!-- event: implementation_report author: assistant at: 2026-07-22T02:11:40Z -->
+
+## Implementation report
+
+Bug fix for missing local echo in TUI/Web:
+
+Observed symptom:
+- Sending from TUI/Web over unified `/protocol/ws` reached the runtime and was accepted as `protocol_method`, but the user's sent content did not appear in the Console.
+
+Root cause:
+- The old HTTP input path emitted observation events for accepted input via `input_protocol_event(...)` (`Event::UserMessage` for user input / `Event::SystemItem` for system input).
+- The new raw `Method::Run` / `Method::Notify` protocol path dispatched the method to the execution backend but did not record the corresponding observation echo event.
+- Therefore the unified protocol stream had assistant/runtime events, but no echo event representing the user-sent content.
+
+Fix:
+- Added protocol-method observation echo in `worker-runtime` after accepted `Runtime::send_protocol_method(...)` dispatch.
+- `Method::Run` now records `Event::UserMessage { segments }`.
+- `Method::Notify` now records a system input `Event::SystemItem`.
+- Kept compact/list_rewind_targets/register_peer command echoes aligned with the old command-input observation shape.
+- Added a runtime protocol WS regression test: send `Method::Run` over `/protocol/ws` and assert the same socket receives `Event::UserMessage` with the sent text.
+
+Verification:
+- `nix develop -c cargo fmt -- --check`
+- `nix develop -c cargo check -p worker-runtime -p yoi-workspace-server -p client -p tui`
+- `nix develop -c cargo test -p worker-runtime --features ws-server --lib protocol_ws_echoes_accepted_run_as_user_message`
+- `nix develop -c cargo test -p worker-runtime --features ws-server --lib protocol_ws`
+- `nix develop -c cargo test -p yoi-workspace-server protocol_ws --lib`
+- `nix develop -c cargo test -p client backend_runtime --lib`
+- `git diff --check`
+
+---

crates/worker-runtime/src/http_server.rs

@@ -1167,6 +1167,17 @@ mod ws_tests {
                 WorkerExecutionRunState::Idle,
             )
         }
+
+        fn dispatch_method(
+            &self,
+            _handle: &WorkerExecutionHandle,
+            _method: protocol::Method,
+        ) -> WorkerExecutionResult {
+            WorkerExecutionResult::accepted(
+                WorkerExecutionOperation::ProtocolMethod,
+                WorkerExecutionRunState::Idle,
+            )
+        }
     }
 
     fn ws_test_bundle(profile: ProfileSelector) -> ConfigBundle {
@@ -1328,6 +1339,34 @@ mod ws_tests {
         ));
     }
 
+    #[tokio::test]
+    async fn protocol_ws_echoes_accepted_run_as_user_message() {
+        let (_runtime, _worker_ref, url) = spawn_runtime_server().await;
+        let (mut stream, _) = connect_async(&url).await.unwrap();
+        let _ = next_frame(&mut stream).await;
+
+        stream
+            .send(Message::Text(
+                serde_json::to_string(&protocol::Method::Run {
+                    input: vec![protocol::Segment::text("hello from protocol")],
+                })
+                .unwrap()
+                .into(),
+            ))
+            .await
+            .unwrap();
+
+        match next_frame(&mut stream).await {
+            protocol::Event::UserMessage { segments } => {
+                assert_eq!(
+                    protocol::Segment::flatten_to_text(&segments),
+                    "hello from protocol"
+                );
+            }
+            event => panic!("expected user message echo, got {event:?}"),
+        }
+    }
+
     #[tokio::test]
     async fn protocol_ws_reports_malformed_cursor_and_method_frame() {
         let (_runtime, _worker_ref, url) = spawn_runtime_server().await;

crates/worker-runtime/src/runtime.rs

@@ -576,6 +576,8 @@ impl Runtime {
             return Ok(vec![Event::Completions { kind, entries }]);
         }
 
+        let observation_payload = protocol_method_observation_event(&method);
+
         let (backend, handle) = {
             let mut state = self.lock()?;
             state.ensure_running()?;
@@ -622,6 +624,9 @@ impl Runtime {
         }
 
         self.record_execution_result(worker_ref, dispatch_result)?;
+        if let Some(payload) = observation_payload {
+            self.record_protocol_method_observation(worker_ref, payload)?;
+        }
         Ok(Vec::new())
     }
 
@@ -958,12 +963,7 @@ impl Runtime {
         worker_ref: &WorkerRef,
         input: WorkerInput,
     ) -> Result<(), RuntimeError> {
-        let mut state = self.lock()?;
+        self.record_protocol_method_observation(worker_ref, input_protocol_event(&input))
-        state.ensure_worker_ref(worker_ref)?;
-        let event =
-            state.push_worker_observation_event(worker_ref.clone(), input_protocol_event(&input));
-        state.persist_worker_observation_event(&event)?;
-        Ok(())
     }
 
     #[cfg(not(feature = "ws-server"))]
@@ -975,6 +975,28 @@ impl Runtime {
         Ok(())
     }
 
+    #[cfg(feature = "ws-server")]
+    fn record_protocol_method_observation(
+        &self,
+        worker_ref: &WorkerRef,
+        payload: Event,
+    ) -> Result<(), RuntimeError> {
+        let mut state = self.lock()?;
+        state.ensure_worker_ref(worker_ref)?;
+        let event = state.push_worker_observation_event(worker_ref.clone(), payload);
+        state.persist_worker_observation_event(&event)?;
+        Ok(())
+    }
+
+    #[cfg(not(feature = "ws-server"))]
+    fn record_protocol_method_observation(
+        &self,
+        _worker_ref: &WorkerRef,
+        _payload: Event,
+    ) -> Result<(), RuntimeError> {
+        Ok(())
+    }
+
     fn transition_worker(
         &self,
         worker_ref: &WorkerRef,
@@ -1836,6 +1858,48 @@ fn validate_worker_input(input: &WorkerInput) -> Result<(), RuntimeError> {
     Ok(())
 }
 
+#[cfg(feature = "ws-server")]
+fn protocol_method_observation_event(method: &Method) -> Option<Event> {
+    match method {
+        Method::Run { input } => Some(Event::UserMessage {
+            segments: input.clone(),
+        }),
+        Method::Notify { message, .. } => Some(Event::SystemItem {
+            item: serde_json::json!({
+                "kind": "embedded_worker_system_input",
+                "content": message,
+            }),
+        }),
+        Method::RegisterPeer { name } => Some(Event::SystemItem {
+            item: serde_json::json!({
+                "kind": "embedded_worker_command_input",
+                "command": "register_peer",
+                "content": name,
+            }),
+        }),
+        Method::Compact => Some(Event::SystemItem {
+            item: serde_json::json!({
+                "kind": "embedded_worker_command_input",
+                "command": "compact",
+                "content": "",
+            }),
+        }),
+        Method::ListRewindTargets => Some(Event::SystemItem {
+            item: serde_json::json!({
+                "kind": "embedded_worker_command_input",
+                "command": "list_rewind_targets",
+                "content": "",
+            }),
+        }),
+        _ => None,
+    }
+}
+
+#[cfg(not(feature = "ws-server"))]
+fn protocol_method_observation_event(_method: &Method) -> Option<Event> {
+    None
+}
+
 #[cfg(feature = "ws-server")]
 fn input_protocol_event(input: &WorkerInput) -> protocol::Event {
     match input.kind {