submitをvec segmentを受け付ける形に変更

crates/pod/examples/pod_cli.rs

@@ -57,7 +57,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("Session: {}", pod.session_id());
 
     // 4. Run a prompt
-    let result = pod.run("What is the capital of France?").await?;
+    let result = pod.run_text("What is the capital of France?").await?;
     match result {
         PodRunResult::Finished => println!("(finished)"),
         PodRunResult::Paused => println!("(paused)"),

crates/pod/examples/pod_protocol.rs

@@ -93,9 +93,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // Send a run method
     handle
-        .send(Method::Run {
+        .send(Method::run_text("What is the capital of France?"))
-            input: "What is the capital of France?".into(),
-        })
         .await?;
 
     // Wait for completion

crates/pod/src/controller.rs

@@ -284,7 +284,7 @@ impl PodController {
                         // render the turn header + user line from a
                         // single source of truth.
                         let _ = event_tx.send(Event::UserMessage {
-                            text: input.clone(),
+                            segments: input.clone(),
                         });
                         let was_paused = status_before == PodStatus::Paused;
                         shared_state.set_status(PodStatus::Running);

crates/pod/src/interrupt_and_run.rs

@@ -11,6 +11,7 @@
 
 use llm_worker::Item;
 use llm_worker::llm_client::client::LlmClient;
+use protocol::Segment;
 use session_store::Store;
 
 use crate::pod::{Pod, PodError, PodRunResult};
@@ -25,7 +26,7 @@ impl<C: LlmClient, St: Store> Pod<C, St> {
     /// rationale around synthetic tool results.
     pub async fn interrupt_and_run(
         &mut self,
-        input: impl Into<String>,
+        input: Vec<Segment>,
     ) -> Result<PodRunResult, PodError> {
         let tool_result_summary = self
             .prompts()

crates/pod/src/pod.rs

@@ -28,7 +28,7 @@ use crate::runtime::dir;
 use crate::runtime::scope_lock::{self, ScopeAllocationGuard, ScopeLockError};
 use crate::prompt::system::{SystemPromptContext, SystemPromptError, SystemPromptTemplate};
 use crate::compact::usage_tracker::UsageTracker;
-use protocol::{Event, AlertLevel, AlertSource};
+use protocol::{AlertLevel, AlertSource, Event, Segment};
 use tokio::sync::broadcast;
 use async_trait::async_trait;
 use llm_worker::interceptor::PreRequestAction;
@@ -553,27 +553,107 @@ impl<C: LlmClient, St: Store> Pod<C, St> {
         Ok(())
     }
 
+    /// Convenience: run with a single `Segment::Text`.
+    ///
+    /// Equivalent to `run(vec![Segment::text(s)])`. The dumb-client
+    /// counterpart of [`protocol::Method::run_text`]; primarily for
+    /// tests and tools that have only a string in hand.
+    pub async fn run_text(
+        &mut self,
+        s: impl Into<String>,
+    ) -> Result<PodRunResult, PodError> {
+        self.run(vec![Segment::text(s)]).await
+    }
+
     /// Send user input and run until the LLM turn completes.
     ///
+    /// `input` is a typed segment list (see [`protocol::Segment`]). The
+    /// Pod flattens it into a single user-message string for the
+    /// underlying Worker, expanding paste content inline and surfacing
+    /// alerts for any segment kind the current Pod has no resolver for
+    /// (file refs, knowledge refs, workflow invocations, unknown
+    /// variants from a newer client).
+    ///
     /// If the between-turns compaction threshold is exceeded mid-run,
     /// the Worker is aborted, history is compacted, and execution resumes
     /// automatically.
-    pub async fn run(&mut self, input: impl Into<String>) -> Result<PodRunResult, PodError> {
+    pub async fn run(&mut self, input: Vec<Segment>) -> Result<PodRunResult, PodError> {
         self.ensure_interceptor_installed();
         self.ensure_system_prompt_materialized()?;
         self.ensure_session_head().await?;
 
+        let flattened = self.flatten_segments(&input);
+
         let history_before = self.worker.as_ref().unwrap().history().len();
 
         // lock → run → unlock
         let worker = self.worker.take().expect("worker taken during run");
         let mut locked = worker.lock();
-        let result = locked.run(input).await;
+        let result = locked.run(flattened).await;
         self.worker = Some(locked.unlock());
 
         self.handle_worker_result(result, history_before).await
     }
 
+    /// Flatten a typed segment list into the single string the Worker
+    /// receives as the user message. Inlines text and paste content;
+    /// substitutes `[unresolved <kind>: <key>]` placeholders for
+    /// segments that have no resolver, and emits a user-facing alert so
+    /// neither the LLM nor the human is blind to the dropped intent.
+    fn flatten_segments(&self, segments: &[Segment]) -> String {
+        let mut out = String::new();
+        for seg in segments {
+            match seg {
+                Segment::Text { content } => out.push_str(content),
+                Segment::Paste { content, .. } => out.push_str(content),
+                Segment::FileRef { path } => {
+                    self.alert(
+                        AlertLevel::Warn,
+                        AlertSource::Pod,
+                        format!(
+                            "file ref @{path} cannot be resolved \
+                             (resolver not yet implemented); passed to LLM as placeholder"
+                        ),
+                    );
+                    out.push_str(&format!("[unresolved file ref: {path}]"));
+                }
+                Segment::KnowledgeRef { slug } => {
+                    self.alert(
+                        AlertLevel::Warn,
+                        AlertSource::Pod,
+                        format!(
+                            "knowledge ref #{slug} cannot be resolved \
+                             (resolver not yet implemented); passed to LLM as placeholder"
+                        ),
+                    );
+                    out.push_str(&format!("[unresolved knowledge ref: {slug}]"));
+                }
+                Segment::WorkflowInvoke { slug } => {
+                    self.alert(
+                        AlertLevel::Warn,
+                        AlertSource::Pod,
+                        format!(
+                            "workflow /{slug} cannot be resolved \
+                             (resolver not yet implemented); passed to LLM as placeholder"
+                        ),
+                    );
+                    out.push_str(&format!("[unresolved workflow invoke: {slug}]"));
+                }
+                Segment::Unknown => {
+                    self.alert(
+                        AlertLevel::Warn,
+                        AlertSource::Pod,
+                        "received unknown segment kind from a newer client; \
+                         passed to LLM as placeholder"
+                            .into(),
+                    );
+                    out.push_str("[unknown input segment]");
+                }
+            }
+        }
+        out
+    }
+
     /// Run a turn triggered by `Method::Notify` while the Pod is idle.
     ///
     /// Unlike [`run`](Self::run), no user message is appended to

crates/pod/src/spawn/comm_tools.rs

@@ -358,7 +358,12 @@ async fn send_run_and_confirm(socket: &Path, input: String) -> Result<(), SendRu
     let (r, w) = stream.into_split();
     let mut writer = JsonLineWriter::new(w);
     let mut reader = JsonLineReader::new(r);
-    tokio::time::timeout(SOCKET_OP_TIMEOUT, writer.write(&Method::Run { input }))
+    tokio::time::timeout(
+        SOCKET_OP_TIMEOUT,
+        writer.write(&Method::Run {
+            input: vec![protocol::Segment::text(input)],
+        }),
+    )
         .await
         .map_err(|_| SendRunError::Io("write timed out".into()))?
         .map_err(|e| SendRunError::Io(format!("write: {e}")))?;

crates/pod/src/spawn/tool.rs

@@ -424,7 +424,7 @@ async fn send_run(socket: &Path, task: &str) -> Result<(), ToolError> {
     let (_reader, writer) = stream.into_split();
     let mut w = JsonLineWriter::new(writer);
     w.write(&Method::Run {
-        input: task.to_string(),
+        input: vec![protocol::Segment::text(task)],
     })
     .await
     .map_err(|e| ToolError::ExecutionFailed(format!("send Method::Run: {e}")))?;

crates/pod/tests/compact_events_test.rs

@@ -192,7 +192,7 @@ async fn post_run_compact_success_broadcasts_start_and_done() {
     let (tx, mut rx) = broadcast::channel::<Event>(64);
     pod.attach_event_tx(tx);
 
-    pod.run("first").await.unwrap();
+    pod.run_text("first").await.unwrap();
     // Drain run events so only compact events remain in `rx`.
     let _ = drain(&mut rx);
 
@@ -248,12 +248,12 @@ async fn mid_turn_compact_success_broadcasts_start_and_done() {
     pod.attach_event_tx(tx);
 
     // First run populates usage_history above the request threshold.
-    pod.run("first").await.unwrap();
+    pod.run_text("first").await.unwrap();
     let _ = drain(&mut rx);
 
     // Second run: pre_llm_request yields immediately, Worker returns
     // Yielded, handle_worker_result routes into do_compact_and_resume.
-    pod.run("second").await.unwrap();
+    pod.run_text("second").await.unwrap();
 
     let events = drain(&mut rx);
     let kinds: Vec<&str> = events
@@ -291,7 +291,7 @@ async fn post_run_compact_failure_broadcasts_start_and_failed() {
     let (tx, mut rx) = broadcast::channel::<Event>(64);
     pod.attach_event_tx(tx);
 
-    pod.run("first").await.unwrap();
+    pod.run_text("first").await.unwrap();
     let _ = drain(&mut rx);
 
     // Best-effort: returns Ok(()) even on failure, but emits CompactFailed.

crates/pod/tests/controller_test.rs

@@ -170,9 +170,7 @@ async fn run_updates_shared_state_to_idle_after_completion() {
     let handle = spawn_controller(pod).await;
 
     handle
-        .send(Method::Run {
+        .send(Method::run_text("Hello"))
-            input: "Hello".into(),
-        })
         .await
         .unwrap();
 
@@ -189,9 +187,7 @@ async fn run_populates_history() {
     let handle = spawn_controller(pod).await;
 
     handle
-        .send(Method::Run {
+        .send(Method::run_text("Hello"))
-            input: "Hello".into(),
-        })
         .await
         .unwrap();
 
@@ -212,9 +208,7 @@ async fn events_are_broadcast() {
     let mut rx = handle.subscribe();
 
     handle
-        .send(Method::Run {
+        .send(Method::run_text("Hello"))
-            input: "Hello".into(),
-        })
         .await
         .unwrap();
 
@@ -265,17 +259,13 @@ async fn double_run_returns_error() {
 
     // Send first run
     handle
-        .send(Method::Run {
+        .send(Method::run_text("first"))
-            input: "first".into(),
-        })
         .await
         .unwrap();
 
     // Immediately send second run (should get error)
     handle
-        .send(Method::Run {
+        .send(Method::run_text("second"))
-            input: "second".into(),
-        })
         .await
         .unwrap();
 
@@ -363,6 +353,119 @@ async fn cancel_without_run_returns_error() {
     assert!(saw_not_running, "should see not_running error");
 }
 
+#[tokio::test]
+async fn run_with_paste_segment_inlines_content_and_emits_typed_user_message() {
+    let client = MockClient::new(simple_text_events());
+    let client_for_assert = client.clone();
+    let pod = make_pod(client).await;
+    let handle = spawn_controller(pod).await;
+    let mut rx = handle.subscribe();
+
+    // Mixed input: plain text + a paste chip + trailing text. Pod must
+    // flatten this into one user-message string (paste content inlined,
+    // no `[Clipboard ...]` label leaking to the LLM); the
+    // `Event::UserMessage` re-broadcast must carry the typed segments
+    // unchanged so other clients can re-render the chip.
+    let segments = vec![
+        protocol::Segment::text("see "),
+        protocol::Segment::Paste {
+            id: 7,
+            chars: 11,
+            lines: 2,
+            content: "line1\nline2".into(),
+        },
+        protocol::Segment::text(" thanks"),
+    ];
+    handle
+        .send(Method::Run {
+            input: segments.clone(),
+        })
+        .await
+        .unwrap();
+
+    let deadline = tokio::time::Instant::now() + std::time::Duration::from_secs(2);
+    let mut user_event_segments: Option<Vec<protocol::Segment>> = None;
+    loop {
+        tokio::select! {
+            event = rx.recv() => match event {
+                Ok(Event::UserMessage { segments }) => user_event_segments = Some(segments),
+                Ok(Event::TurnEnd { .. }) => break,
+                Err(_) => break,
+                _ => {}
+            },
+            _ = tokio::time::sleep_until(deadline) => break,
+        }
+    }
+    let echoed = user_event_segments.expect("UserMessage event missing");
+    assert_eq!(echoed.len(), 3, "all three segments must round-trip");
+    assert!(matches!(echoed[1], protocol::Segment::Paste { id: 7, .. }));
+
+    // The Worker received a single user message whose text is the
+    // flattened body — paste content inlined, no chip label.
+    tokio::time::sleep(std::time::Duration::from_millis(50)).await;
+    let requests = client_for_assert.captured_requests();
+    assert_eq!(requests.len(), 1, "one LLM call expected");
+    let user_text = requests[0]
+        .items
+        .iter()
+        .find_map(|i| i.as_text().map(|s| s.to_string()))
+        .unwrap_or_default();
+    assert!(user_text.contains("see line1\nline2 thanks"), "got: {user_text:?}");
+    assert!(!user_text.contains("[Clipboard"), "label must not leak: {user_text:?}");
+}
+
+#[tokio::test]
+async fn run_with_unresolved_segment_emits_alert_and_placeholder() {
+    let client = MockClient::new(simple_text_events());
+    let client_for_assert = client.clone();
+    let pod = make_pod(client).await;
+    let handle = spawn_controller(pod).await;
+    let mut rx = handle.subscribe();
+
+    let segments = vec![
+        protocol::Segment::text("look at "),
+        protocol::Segment::FileRef { path: "src/lib.rs".into() },
+    ];
+    handle
+        .send(Method::Run { input: segments })
+        .await
+        .unwrap();
+
+    let deadline = tokio::time::Instant::now() + std::time::Duration::from_secs(2);
+    let mut saw_alert_for_file_ref = false;
+    loop {
+        tokio::select! {
+            event = rx.recv() => match event {
+                Ok(Event::Alert(a)) if a.message.contains("file ref @src/lib.rs") => {
+                    saw_alert_for_file_ref = true;
+                }
+                Ok(Event::TurnEnd { .. }) => break,
+                Err(_) => break,
+                _ => {}
+            },
+            _ = tokio::time::sleep_until(deadline) => break,
+        }
+    }
+    assert!(
+        saw_alert_for_file_ref,
+        "an Alert mentioning the unresolved file ref must be emitted"
+    );
+
+    tokio::time::sleep(std::time::Duration::from_millis(50)).await;
+    let requests = client_for_assert.captured_requests();
+    let user_text = requests[0]
+        .items
+        .iter()
+        .find_map(|i| i.as_text().map(|s| s.to_string()))
+        .unwrap_or_default();
+    // LLM context carries a placeholder so the model can ask for the
+    // missing content rather than silently miss the user's intent.
+    assert!(
+        user_text.contains("[unresolved file ref: src/lib.rs]"),
+        "placeholder missing, got: {user_text:?}"
+    );
+}
+
 #[tokio::test]
 async fn notify_while_idle_auto_starts_turn_and_injects_system_message() {
     let client = MockClient::new(simple_text_events());
@@ -425,9 +528,7 @@ async fn notify_while_running_does_not_emit_already_running_error() {
     let mut rx = handle.subscribe();
 
     handle
-        .send(Method::Run {
+        .send(Method::run_text("start"))
-            input: "start".into(),
-        })
         .await
         .unwrap();
     handle
@@ -491,9 +592,7 @@ async fn socket_run_receives_events() {
 
     // Send run method via socket
     writer
-        .write(&Method::Run {
+        .write(&Method::run_text("Hello"))
-            input: "Hello".into(),
-        })
         .await
         .unwrap();
 
@@ -641,9 +740,7 @@ async fn pause_then_resume_transitions_and_preserves_history_consistency() {
     let mut rx = handle.subscribe();
 
     handle
-        .send(Method::Run {
+        .send(Method::run_text("hello"))
-            input: "hello".into(),
-        })
         .await
         .unwrap();
 
@@ -754,9 +851,7 @@ async fn paused_then_run_closes_orphan_tool_use_for_next_request() {
     let mut rx = handle.subscribe();
 
     handle
-        .send(Method::Run {
+        .send(Method::run_text("first"))
-            input: "first".into(),
-        })
         .await
         .unwrap();
 
@@ -789,9 +884,7 @@ async fn paused_then_run_closes_orphan_tool_use_for_next_request() {
     // `Pod::interrupt_and_run`, which closes the orphan + injects a
     // system note before the fresh user message.
     handle
-        .send(Method::Run {
+        .send(Method::run_text("new request"))
-            input: "new request".into(),
-        })
         .await
         .unwrap();
     assert!(

crates/pod/tests/pod_comm_tools_test.rs

@@ -185,7 +185,10 @@ async fn send_to_pod_delivers_run_method() {
 
     let method = received.await.unwrap().expect("expected a method");
     match method {
-        Method::Run { input } => assert_eq!(input, "hello there"),
+        Method::Run { input } => match input.as_slice() {
+            [protocol::Segment::Text { content }] => assert_eq!(content, "hello there"),
+            other => panic!("expected single Text segment, got {other:?}"),
+        },
         other => panic!("expected Run, got {other:?}"),
     }
 }

crates/pod/tests/spawn_pod_test.rs

@@ -193,7 +193,10 @@ async fn spawn_pod_delegates_scope_and_sends_run() {
     // Verify the tool delivered Method::Run to the socket.
     let method = received.await.unwrap().expect("expected one Method line");
     match method {
-        Method::Run { input } => assert_eq!(input, "hello"),
+        Method::Run { input } => match input.as_slice() {
+            [protocol::Segment::Text { content }] => assert_eq!(content, "hello"),
+            other => panic!("expected single Text segment, got {other:?}"),
+        },
         other => panic!("expected Run, got {other:?}"),
     }
 

crates/pod/tests/system_prompt_template_test.rs

@@ -160,7 +160,7 @@ async fn materialise_on_first_turn_populates_worker() {
     )
     .await
     .unwrap();
-    pod.run("hi").await.unwrap();
+    pod.run_text("hi").await.unwrap();
     let rendered = pod
         .worker()
         .get_system_prompt()
@@ -180,7 +180,7 @@ async fn session_start_state_captures_rendered_prompt() {
     let (mut pod, pwd) = make_pod_with_body("hello cwd={{ cwd }}", client)
         .await
         .unwrap();
-    pod.run("hi").await.unwrap();
+    pod.run_text("hi").await.unwrap();
 
     let entries = pod.store().read_all(pod.session_id()).await.unwrap();
     let first = entries.first().expect("at least one entry");
@@ -199,7 +199,7 @@ async fn session_start_state_captures_rendered_prompt() {
 async fn render_failure_propagates_as_pod_error() {
     let client = MockClient::new(vec![single_text_events("ok")]);
     let (mut pod, _pwd) = make_pod_with_body("{{ ghost }}", client).await.unwrap();
-    let err = pod.run("hi").await.unwrap_err();
+    let err = pod.run_text("hi").await.unwrap_err();
     assert!(matches!(err, PodError::SystemPromptRender { .. }));
 }
 
@@ -212,9 +212,9 @@ async fn materialise_runs_only_once_across_turns() {
     let (mut pod, _pwd) = make_pod_with_body("fixed prompt {{ cwd }}", client)
         .await
         .unwrap();
-    pod.run("one").await.unwrap();
+    pod.run_text("one").await.unwrap();
     let first = pod.worker().get_system_prompt().unwrap().to_string();
-    pod.run("two").await.unwrap();
+    pod.run_text("two").await.unwrap();
     let second = pod.worker().get_system_prompt().unwrap().to_string();
     assert_eq!(first, second);
 }
@@ -225,7 +225,7 @@ async fn agents_md_is_injected_as_trailing_section_when_present() {
     let (mut pod, pwd) = make_pod_with_body("BODY", client).await.unwrap();
     std::fs::write(pwd.join("AGENTS.md"), "# project rules\nbe kind").unwrap();
 
-    pod.run("hi").await.unwrap();
+    pod.run_text("hi").await.unwrap();
     let rendered = pod.worker().get_system_prompt().unwrap().to_string();
     assert!(rendered.starts_with("BODY"));
     assert!(rendered.contains("## Project instructions (AGENTS.md)"));
@@ -237,7 +237,7 @@ async fn agents_md_is_injected_as_trailing_section_when_present() {
 async fn agents_md_absent_omits_trailing_section() {
     let client = MockClient::new(vec![single_text_events("ok")]);
     let (mut pod, _pwd) = make_pod_with_body("BODY", client).await.unwrap();
-    pod.run("hi").await.unwrap();
+    pod.run_text("hi").await.unwrap();
     let rendered = pod.worker().get_system_prompt().unwrap().to_string();
     assert!(!rendered.contains("## Project instructions"));
     assert!(!rendered.contains("AGENTS.md"));
@@ -246,20 +246,20 @@ async fn agents_md_absent_omits_trailing_section() {
 #[tokio::test]
 async fn agents_md_not_reread_after_compact() {
     let client = MockClient::new(vec![
-        single_text_events("a"),                                     // pod.run("first")
+        single_text_events("a"),                                     // pod.run_text("first")
-        single_text_events("b"),                                     // pod.run("second")
+        single_text_events("b"),                                     // pod.run_text("second")
         write_summary_tool_use_events("call-1", "compacted summary"), // compact worker: tool_use
         single_text_events("done"),                                  // compact worker: close
-        single_text_events("c"),                                     // pod.run("third")
+        single_text_events("c"),                                     // pod.run_text("third")
     ]);
     let (mut pod, pwd) = make_pod_with_body("BODY", client).await.unwrap();
     let agents_path = pwd.join("AGENTS.md");
     std::fs::write(&agents_path, "original").unwrap();
 
-    pod.run("first").await.unwrap();
+    pod.run_text("first").await.unwrap();
     let before = pod.worker().get_system_prompt().unwrap().to_string();
     assert!(before.contains("original"));
-    pod.run("second").await.unwrap();
+    pod.run_text("second").await.unwrap();
 
     // Mutate the file after the first turn — must not affect the cached
     // system prompt either on a subsequent turn or across compaction.
@@ -269,7 +269,7 @@ async fn agents_md_not_reread_after_compact() {
     assert!(after_compact.contains("original"));
     assert!(!after_compact.contains("mutated"));
 
-    pod.run("third").await.unwrap();
+    pod.run_text("third").await.unwrap();
     let after_third = pod.worker().get_system_prompt().unwrap().to_string();
     assert!(after_third.contains("original"));
     assert!(!after_third.contains("mutated"));
@@ -278,25 +278,25 @@ async fn agents_md_not_reread_after_compact() {
 #[tokio::test]
 async fn compact_preserves_system_prompt() {
     let client = MockClient::new(vec![
-        single_text_events("a"),                                     // pod.run("first")
+        single_text_events("a"),                                     // pod.run_text("first")
-        single_text_events("b"),                                     // pod.run("second")
+        single_text_events("b"),                                     // pod.run_text("second")
         write_summary_tool_use_events("call-1", "compacted summary"), // compact worker: tool_use
         single_text_events("done"),                                  // compact worker: close
-        single_text_events("c"),                                     // pod.run("third")
+        single_text_events("c"),                                     // pod.run_text("third")
     ]);
     let (mut pod, _pwd) = make_pod_with_body("SP cwd={{ cwd }}", client)
         .await
         .unwrap();
 
-    pod.run("first").await.unwrap();
+    pod.run_text("first").await.unwrap();
     let before = pod.worker().get_system_prompt().unwrap().to_string();
-    pod.run("second").await.unwrap();
+    pod.run_text("second").await.unwrap();
 
     pod.compact(0).await.unwrap();
 
     let after = pod.worker().get_system_prompt().unwrap().to_string();
     assert_eq!(before, after);
 
-    pod.run("third").await.unwrap();
+    pod.run_text("third").await.unwrap();
     assert_eq!(pod.worker().get_system_prompt().unwrap(), after.as_str());
 }

crates/protocol/src/lib.rs

@@ -11,7 +11,7 @@ use serde::{Deserialize, Serialize};
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(tag = "method", content = "params", rename_all = "snake_case")]
 pub enum Method {
-    Run { input: String },
+    Run { input: Vec<Segment> },
     /// Human-readable text injected into the target Pod's LLM context
     /// as a non-blocking system message. No side effects beyond LLM
     /// context; use `PodEvent` for typed lifecycle reports.
@@ -76,6 +76,72 @@ pub enum PodEvent {
     },
 }
 
+// ---------------------------------------------------------------------------
+// Segment — typed pieces of a user submission
+// ---------------------------------------------------------------------------
+
+/// One typed piece of a user submission.
+///
+/// `Method::Run` and `Event::UserMessage` carry `Vec<Segment>`. Dumb
+/// clients (CLI piping, scripts) only need to produce a single
+/// `Segment::Text`; richer clients (TUI / GUI) construct typed atoms
+/// (paste chips, file refs, knowledge refs, workflow invocations) and
+/// send them through directly so the Pod side never has to re-parse a
+/// flattened string.
+///
+/// Forward compat: payloads with unknown `kind` deserialize to
+/// `Segment::Unknown`. Pod treats this the same as known-but-unresolved
+/// variants — emits an alert and inserts a `[unknown input segment]`
+/// placeholder into the LLM context so neither user nor LLM is blind to
+/// the dropped intent.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "kind", rename_all = "snake_case")]
+pub enum Segment {
+    /// Free-form text. The fallback every client can produce.
+    Text { content: String },
+    /// Bracketed-paste capture from a TUI-style client. `id`, `chars`
+    /// and `lines` carry the metadata needed to re-render a
+    /// `[Clipboard #N | X chars, Y lines]` chip in `Event::UserMessage`
+    /// re-broadcast.
+    Paste {
+        id: u32,
+        chars: u32,
+        lines: u32,
+        content: String,
+    },
+    /// `@<path>` file reference. Pod resolves to scope-checked file
+    /// content when a resolver is registered (resolver implementation
+    /// out of scope for this ticket).
+    FileRef { path: String },
+    /// `#<slug>` Knowledge reference (see `docs/plan/memory.md`).
+    KnowledgeRef { slug: String },
+    /// `/<slug>` Workflow invocation (see `docs/plan/workflow.md`).
+    WorkflowInvoke { slug: String },
+    /// Unknown variant from a newer client. Pod treats this as an
+    /// unresolved input — surfaces an alert and inserts a placeholder.
+    /// Round-trip is lossy: re-serializing yields `{"kind":"unknown"}`.
+    #[serde(other)]
+    Unknown,
+}
+
+impl Segment {
+    /// Convenience constructor for the most common case.
+    pub fn text(s: impl Into<String>) -> Self {
+        Self::Text { content: s.into() }
+    }
+}
+
+impl Method {
+    /// Convenience: a `Run` carrying a single `Segment::Text`.
+    /// Used by dumb clients, inter-Pod tools, and tests that only have
+    /// a string to forward.
+    pub fn run_text(s: impl Into<String>) -> Self {
+        Self::Run {
+            input: vec![Segment::text(s)],
+        }
+    }
+}
+
 // ---------------------------------------------------------------------------
 // Event (Pod → Client via Unix Socket broadcast)
 // ---------------------------------------------------------------------------
@@ -93,7 +159,7 @@ pub enum Event {
     /// Fires exactly once per accepted `Method::Run`, before
     /// `TurnStart`. Rejected runs (e.g. `AlreadyRunning`) do not emit.
     UserMessage {
-        text: String,
+        segments: Vec<Segment>,
     },
     TurnStart {
         turn: usize,
@@ -293,14 +359,84 @@ mod tests {
 
     #[test]
     fn method_run_json_roundtrip() {
-        let json = r#"{"method":"run","params":{"input":"Hello"}}"#;
+        let json = r#"{"method":"run","params":{"input":[{"kind":"text","content":"Hello"}]}}"#;
         let method: Method = serde_json::from_str(json).unwrap();
-        assert!(matches!(method, Method::Run { ref input } if input == "Hello"));
+        match &method {
-
+            Method::Run { input } => {
+                assert_eq!(input.len(), 1);
+                match &input[0] {
+                    Segment::Text { content } => assert_eq!(content, "Hello"),
+                    other => panic!("expected Text, got {other:?}"),
+                }
+            }
+            other => panic!("expected Run, got {other:?}"),
+        }
         let serialized = serde_json::to_string(&method).unwrap();
         assert_eq!(serialized, json);
     }
 
+    #[test]
+    fn method_run_paste_segment_roundtrip() {
+        let method = Method::Run {
+            input: vec![
+                Segment::text("see "),
+                Segment::Paste {
+                    id: 7,
+                    chars: 12,
+                    lines: 2,
+                    content: "line1\nline2".into(),
+                },
+            ],
+        };
+        let json = serde_json::to_string(&method).unwrap();
+        let decoded: Method = serde_json::from_str(&json).unwrap();
+        match decoded {
+            Method::Run { input } => {
+                assert_eq!(input.len(), 2);
+                match &input[1] {
+                    Segment::Paste {
+                        id,
+                        chars,
+                        lines,
+                        content,
+                    } => {
+                        assert_eq!(*id, 7);
+                        assert_eq!(*chars, 12);
+                        assert_eq!(*lines, 2);
+                        assert_eq!(content, "line1\nline2");
+                    }
+                    other => panic!("expected Paste, got {other:?}"),
+                }
+            }
+            other => panic!("expected Run, got {other:?}"),
+        }
+    }
+
+    #[test]
+    fn segment_unknown_variant_decodes_as_unknown() {
+        // A future client sends a segment kind this Pod has never heard of.
+        // Forward compat requirement: deserialization must succeed and the
+        // unknown payload must surface as `Segment::Unknown` so the Pod
+        // fallback path (placeholder + alert) can fire.
+        let json = r#"{"kind":"image_ref","url":"https://example.com/x.png"}"#;
+        let seg: Segment = serde_json::from_str(json).unwrap();
+        assert!(matches!(seg, Segment::Unknown));
+    }
+
+    #[test]
+    fn method_run_with_unknown_segment_decodes() {
+        let json = r#"{"method":"run","params":{"input":[{"kind":"text","content":"hi"},{"kind":"future_thing","x":1}]}}"#;
+        let method: Method = serde_json::from_str(json).unwrap();
+        match method {
+            Method::Run { input } => {
+                assert_eq!(input.len(), 2);
+                assert!(matches!(input[0], Segment::Text { .. }));
+                assert!(matches!(input[1], Segment::Unknown));
+            }
+            other => panic!("expected Run, got {other:?}"),
+        }
+    }
+
     #[test]
     fn method_without_params() {
         let json = r#"{"method":"resume"}"#;
@@ -612,16 +748,23 @@ mod tests {
     #[test]
     fn event_user_message_roundtrip() {
         let event = Event::UserMessage {
-            text: "hello 世界".into(),
+            segments: vec![Segment::text("hello 世界")],
         };
         let json = serde_json::to_string(&event).unwrap();
         let parsed: serde_json::Value = serde_json::from_str(&json).unwrap();
         assert_eq!(parsed["event"], "user_message");
-        assert_eq!(parsed["data"]["text"], "hello 世界");
+        assert_eq!(parsed["data"]["segments"][0]["kind"], "text");
+        assert_eq!(parsed["data"]["segments"][0]["content"], "hello 世界");
 
         let decoded: Event = serde_json::from_str(&json).unwrap();
         match decoded {
-            Event::UserMessage { text } => assert_eq!(text, "hello 世界"),
+            Event::UserMessage { segments } => {
+                assert_eq!(segments.len(), 1);
+                match &segments[0] {
+                    Segment::Text { content } => assert_eq!(content, "hello 世界"),
+                    other => panic!("expected Text, got {other:?}"),
+                }
+            }
             other => panic!("expected UserMessage, got {other:?}"),
         }
     }

crates/tui/src/app.rs

@@ -1,4 +1,4 @@
-use protocol::{Event, Method, AlertLevel, AlertSource, RunResult};
+use protocol::{AlertLevel, AlertSource, Event, Method, RunResult, Segment};
 
 use crate::block::{Block, CompactEvent, ToolCallBlock, ToolCallState};
 use crate::cache::FileCache;
@@ -62,8 +62,8 @@ impl App {
     }
 
     pub fn submit_input(&mut self) -> Option<Method> {
-        let text = self.input.submit_text().trim().to_owned();
+        let segments = self.input.submit_segments();
-        if text.is_empty() {
+        if segments_are_blank(&segments) {
             // Empty Enter only does something meaningful when the Pod
             // is paused: resume the interrupted turn. Otherwise no-op.
             if self.paused {
@@ -77,7 +77,7 @@ impl App {
         // client subscribed to the Pod). Locally we only clear the
         // input buffer and forward the method.
         self.input.clear();
-        Some(Method::Run { input: text })
+        Some(Method::Run { input: segments })
     }
 
     pub fn push_error(&mut self, message: impl Into<String>) {
@@ -90,12 +90,12 @@ impl App {
 
     pub fn handle_pod_event(&mut self, event: Event) {
         match event {
-            Event::UserMessage { text } => {
+            Event::UserMessage { segments } => {
                 self.turn_index += 1;
                 self.blocks.push(Block::TurnHeader {
                     turn: self.turn_index,
                 });
-                self.blocks.push(Block::UserMessage { text });
+                self.blocks.push(Block::UserMessage { segments });
                 self.assistant_streaming = false;
             }
             Event::TurnStart { .. } => {
@@ -370,7 +370,9 @@ impl App {
                                 turn: self.turn_index,
                             });
                             if !text.is_empty() {
-                                self.blocks.push(Block::UserMessage { text });
+                                self.blocks.push(Block::UserMessage {
+                                    segments: vec![Segment::text(text)],
+                                });
                             }
                         }
                         "assistant" if !text.is_empty() => {
@@ -488,6 +490,17 @@ fn strip_cat_n_prefix(formatted: &str) -> String {
     out
 }
 
+/// True if the submitted segment list carries no user-visible content
+/// (only whitespace / newlines, no paste, no typed atoms). Used to
+/// decide whether an empty Enter should be a no-op or trigger a
+/// `Resume` when the Pod is paused.
+fn segments_are_blank(segments: &[Segment]) -> bool {
+    segments.iter().all(|s| match s {
+        Segment::Text { content } => content.trim().is_empty(),
+        _ => false,
+    })
+}
+
 pub fn alert_source_label(source: AlertSource) -> &'static str {
     match source {
         AlertSource::Pod => "pod",

crates/tui/src/block.rs

@@ -7,7 +7,7 @@
 
 #![allow(dead_code)] // Phase 5 will consume `output` in detail mode.
 
-use protocol::{Greeting, AlertLevel, AlertSource};
+use protocol::{AlertLevel, AlertSource, Greeting, Segment};
 
 pub enum Block {
     Greeting(Greeting),
@@ -15,7 +15,7 @@ pub enum Block {
         turn: usize,
     },
     UserMessage {
-        text: String,
+        segments: Vec<Segment>,
     },
     AssistantText {
         text: String,

crates/tui/src/input.rs

@@ -190,16 +190,33 @@ impl InputBuffer {
         (start, self.cursor - start)
     }
 
-    /// Flatten atoms into the text sent to the Pod: paste atoms expand
+    /// Build the typed `Vec<Segment>` sent over the protocol. Adjacent
-    /// to their original content; no `[Clipboard ...]` labels survive.
+    /// `Atom::Char`s are concatenated into a single `Segment::Text`;
-    pub fn submit_text(&self) -> String {
+    /// each `Atom::Paste` becomes a standalone `Segment::Paste` so the
-        let mut out = String::new();
+    /// `[Clipboard #N | X chars, Y lines]` chip can be reconstructed by
+    /// any client subscribed to the resulting `Event::UserMessage`.
+    pub fn submit_segments(&self) -> Vec<protocol::Segment> {
+        let mut out = Vec::new();
+        let mut buf = String::new();
         for a in &self.atoms {
             match a {
-                Atom::Char(c) => out.push(*c),
+                Atom::Char(c) => buf.push(*c),
-                Atom::Paste(p) => out.push_str(&p.content),
+                Atom::Paste(p) => {
+                    if !buf.is_empty() {
+                        out.push(protocol::Segment::text(std::mem::take(&mut buf)));
+                    }
+                    out.push(protocol::Segment::Paste {
+                        id: p.id,
+                        chars: p.chars as u32,
+                        lines: p.lines as u32,
+                        content: p.content.clone(),
+                    });
+                }
             }
         }
+        if !buf.is_empty() {
+            out.push(protocol::Segment::text(buf));
+        }
         out
     }
 
@@ -402,3 +419,73 @@ pub struct InputRender {
     pub cursor_row: u16,
     pub cursor_col: u16,
 }
+
+#[cfg(test)]
+mod submit_segments_tests {
+    use super::*;
+    use protocol::Segment;
+
+    #[test]
+    fn pure_text_collapses_to_one_text_segment() {
+        let mut buf = InputBuffer::new();
+        for c in "hello".chars() {
+            buf.insert_char(c);
+        }
+        let segs = buf.submit_segments();
+        assert_eq!(segs.len(), 1);
+        match &segs[0] {
+            Segment::Text { content } => assert_eq!(content, "hello"),
+            other => panic!("expected Text, got {other:?}"),
+        }
+    }
+
+    #[test]
+    fn paste_emits_separate_segment_with_metadata() {
+        let mut buf = InputBuffer::new();
+        for c in "see ".chars() {
+            buf.insert_char(c);
+        }
+        buf.insert_paste("line1\nline2".into());
+        for c in " end".chars() {
+            buf.insert_char(c);
+        }
+        let segs = buf.submit_segments();
+        assert_eq!(segs.len(), 3);
+        match &segs[0] {
+            Segment::Text { content } => assert_eq!(content, "see "),
+            other => panic!("expected Text, got {other:?}"),
+        }
+        match &segs[1] {
+            Segment::Paste {
+                chars,
+                lines,
+                content,
+                ..
+            } => {
+                assert_eq!(content, "line1\nline2");
+                assert_eq!(*chars, "line1\nline2".chars().count() as u32);
+                assert_eq!(*lines, 2);
+            }
+            other => panic!("expected Paste, got {other:?}"),
+        }
+        match &segs[2] {
+            Segment::Text { content } => assert_eq!(content, " end"),
+            other => panic!("expected Text, got {other:?}"),
+        }
+    }
+
+    #[test]
+    fn empty_buffer_yields_empty_segments() {
+        let buf = InputBuffer::new();
+        assert!(buf.submit_segments().is_empty());
+    }
+
+    #[test]
+    fn leading_paste_does_not_emit_empty_text() {
+        let mut buf = InputBuffer::new();
+        buf.insert_paste("X".into());
+        let segs = buf.submit_segments();
+        assert_eq!(segs.len(), 1);
+        assert!(matches!(segs[0], Segment::Paste { .. }));
+    }
+}

crates/tui/src/ui.rs

@@ -20,7 +20,7 @@ use ratatui::text::{Line, Span};
 use ratatui::widgets::{Block as UiBlock, BorderType, Borders, Padding, Paragraph, Widget, Wrap};
 use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
 
-use protocol::{Greeting, AlertLevel};
+use protocol::{AlertLevel, Greeting, Segment};
 
 use crate::app::{App, fmt_tokens, alert_source_label};
 use crate::block::{Block, CompactEvent};
@@ -299,13 +299,7 @@ fn render_block_into(
                 kind_style(MessageKind::TurnHeader),
             )));
         }
-        Block::UserMessage { text } => match mode {
+        Block::UserMessage { segments } => render_user_message(lines, segments, width, mode),
-            Mode::Overview => push_overview_line(lines, text, width, MessageKind::User, "> "),
-            // User input and assistant prose are the primary readable
-            // content of a turn — never compressed in detail / normal.
-            // Only `overview` folds them to a single line.
-            _ => push_padded_lines(lines, text, MessageKind::User),
-        },
         Block::AssistantText { text } => match mode {
             Mode::Overview => push_overview_line(lines, text, width, MessageKind::Assistant, ""),
             _ => push_padded_lines(lines, text, MessageKind::Assistant),
@@ -363,6 +357,87 @@ fn push_padded_lines(lines: &mut Vec<Line<'static>>, text: &str, kind: MessageKi
     }
 }
 
+/// Render `Block::UserMessage` from typed segments. Paste atoms are
+/// reconstructed as `[Clipboard #N | X chars, Y lines]` chips in
+/// magenta — matching the input-area presentation — so the user can
+/// recognise their own paste in the scrollback. User-entered text uses
+/// the standard `MessageKind::User` style; other segment kinds (file /
+/// knowledge / workflow refs, unknown variants) render as inline
+/// identifiers in the user style and are expected to be rare until the
+/// completion ticket lands.
+fn render_user_message(
+    lines: &mut Vec<Line<'static>>,
+    segments: &[Segment],
+    width: u16,
+    mode: Mode,
+) {
+    if matches!(mode, Mode::Overview) {
+        let text = segments
+            .iter()
+            .map(segment_display_text)
+            .collect::<Vec<_>>()
+            .join("");
+        push_overview_line(lines, &text, width, MessageKind::User, "> ");
+        return;
+    }
+
+    let user_style = kind_style(MessageKind::User);
+    let paste_style = Style::default().fg(Color::Magenta);
+    let mut current: Vec<Span<'static>> = Vec::new();
+
+    for seg in segments {
+        match seg {
+            Segment::Text { content } => {
+                let mut iter = content.split('\n').peekable();
+                while let Some(line) = iter.next() {
+                    if !line.is_empty() {
+                        current.push(Span::styled(line.to_owned(), user_style));
+                    }
+                    if iter.peek().is_some() {
+                        lines.push(Line::from(std::mem::take(&mut current)));
+                    }
+                }
+            }
+            Segment::Paste {
+                id,
+                chars,
+                lines: line_count,
+                ..
+            } => {
+                current.push(Span::styled(
+                    format!("[Clipboard #{id} | {chars} chars, {line_count} lines]"),
+                    paste_style,
+                ));
+            }
+            other => {
+                current.push(Span::styled(segment_display_text(other), user_style));
+            }
+        }
+    }
+    if !current.is_empty() {
+        lines.push(Line::from(current));
+    }
+}
+
+/// One-line textual rendering of a segment, used by `Mode::Overview`
+/// (which collapses everything to a single string) and as the fallback
+/// inline rendering for non-paste, non-text segments.
+fn segment_display_text(seg: &Segment) -> String {
+    match seg {
+        Segment::Text { content } => content.replace('\n', " "),
+        Segment::Paste {
+            id,
+            chars,
+            lines,
+            ..
+        } => format!("[Clipboard #{id} | {chars} chars, {lines} lines]"),
+        Segment::FileRef { path } => format!("@{path}"),
+        Segment::KnowledgeRef { slug } => format!("#{slug}"),
+        Segment::WorkflowInvoke { slug } => format!("/{slug}"),
+        Segment::Unknown => "[unknown segment]".to_owned(),
+    }
+}
+
 /// Single-line summary for overview mode. The output is clipped to
 /// exactly one rendered terminal row at `width` columns — the first
 /// non-empty logical line is truncated (with `…`) to fit alongside an

tickets/submit-segment-protocol.md

@@ -80,3 +80,8 @@ text しか作れない client が引き続き存在しても良いことを pro
 - `crates/protocol/src/lib.rs`（`Method::Run`, `Event::UserMessage`）
 - `crates/tui/src/input.rs`（`Atom::Paste`, `submit_text`）
 - `crates/tui/src/app.rs`（`submit_input`, `Block::UserMessage` 描画）
+
+## Review
+- 状態: Approve
+- レビュー詳細: [./submit-segment-protocol.review.md](./submit-segment-protocol.review.md)
+- 日付: 2026-04-27

tickets/submit-segment-protocol.review.md

@@ -0,0 +1,60 @@
+# Review: サブミット入力 protocol Segment 化
+
+## 前提・要件の確認
+
+### protocol
+- `Method::Run` と `Event::UserMessage` が `Vec<Segment>` で wire を通る:
+  - `crates/protocol/src/lib.rs:14` (`Run { input: Vec<Segment> }`) / `:162` (`UserMessage { segments: Vec<Segment> }`)。`tag = "kind"` の internally-tagged enum で Text/Paste/FileRef/KnowledgeRef/WorkflowInvoke/Unknown を定義 (`:97-125`)。完了。
+- 全 5 variant 定義: 完了 (`:101-119`)。
+- forward compatibility: `#[serde(other)]` で `Segment::Unknown` に吸収 (`:123`)。専用テスト 2 本 (`:416-438`) で deserialize 成功と `Method::Run` 内での共存を確認。完了。
+- dumb client 用ヘルパー: `Segment::text` (`:129`) と `Method::run_text` (`:138`) を用意し、ドキュメントコメントで「`vec![Segment::Text(_)]` のみで動く」前提を明記 (`:84-96`)。完了。
+- `Event::UserMessage roundtrip` の更新版テスト (`:749-770`) も追加済み。
+
+### Pod 側 resolve
+- `Pod::run` が `Vec<Segment>` を受け、`flatten_segments` で単一文字列に展開 (`crates/pod/src/pod.rs:580-655`)。Text/Paste は inline、FileRef/KnowledgeRef/WorkflowInvoke/Unknown は `[unresolved <kind>: <key>]` プレースホルダに置換し同時に `Alert(Warn, Pod, …)` を発火。要件の **2 経路同時通知** を満たす。
+- `Pod::run_text` shim (`:561-566`) と `Method::run_text` の対応関係も整合。
+- `interrupt_and_run` も `Vec<Segment>` シグネチャに揃え、内部で `self.run(input)` に委譲 (`crates/pod/src/interrupt_and_run.rs:27-47`)。
+- Controller 側で `Method::Run { input }` を受けると `Event::UserMessage { segments: input.clone() }` を broadcast し、その後 `pod.run(input)` / `interrupt_and_run(input)` に渡す (`crates/pod/src/controller.rs:273-299`)。Event 経路は typed のまま再放送される。
+
+### TUI 側
+- `InputBuffer::submit_segments` が `Atom::Char` を 1 つの `Segment::Text` に collapse、`Atom::Paste` を独立した `Segment::Paste` に分離 (`crates/tui/src/input.rs:198-221`)。テスト 4 本 (`:428-490`) で純テキスト・前後 Text に挟まれた Paste・空入力・先頭 Paste のケースをカバー。
+- `submit_input` は `submit_segments()` を経由して `Method::Run { input: segments }` を送出 (`crates/tui/src/app.rs:64-81`)。空入力 (`segments_are_blank`, `:497-502`) の Pause/Resume 動作も保たれている。
+- `Block::UserMessage` が `segments: Vec<Segment>` に置き換わり (`crates/tui/src/block.rs:17-19`)、`render_user_message` (`crates/tui/src/ui.rs:368-420`) が paste セグメントを magenta `[Clipboard #N | X chars, Y lines]` で再構築、Overview モードは `segment_display_text` で one-liner にする (`:425-439`)。Unknown variant は `[unknown segment]` 表示。
+- `Event::UserMessage { segments }` ハンドラが typed を直接 `Block::UserMessage` に積む (`crates/tui/src/app.rs:93-100`)。
+- `restore_history` の user message 側はテキストのみを `vec![Segment::text(text)]` でラップ (`:373-376`) — 後述の non-blocking 指摘あり。
+
+### unknown variant / 未登録 resolver
+- `flatten_segments` が unknown / FileRef / KnowledgeRef / WorkflowInvoke すべてに対し placeholder + `Alert` を発行 (`crates/pod/src/pod.rs:609-651`)。決定済みルール通り。
+- 統合テスト `run_with_unresolved_segment_emits_alert_and_placeholder` (`crates/pod/tests/controller_test.rs:417-467`) が `FileRef` ケースで Alert と placeholder の両発火を end-to-end で立証。
+- `run_with_paste_segment_inlines_content_and_emits_typed_user_message` (`:357-415`) が paste 経路の hybrid 性質 (LLM には inline 本文・Event::UserMessage には typed segments) を立証し、ラベルの LLM への漏洩がないことも明示的に assert (`:414`)。
+
+### ライフサイクル/ビルド条件
+- 既存テスト群は `Method::run_text` / `Pod::run_text` への置換で sweep 済み (`crates/pod/examples/*.rs`、`crates/pod/tests/*.rs` 全般)。残存する直接 `Method::Run { input: ... }` は (a) submit_input の本流、(b) 新統合テスト、(c) FFI 側のアサート (`spawn_pod_test.rs:196`、`pod_comm_tools_test.rs:188`) のみで、いずれも Vec<Segment> 形に揃っている。
+- `Worker::run(String)` 自体は LLM-worker 層の低レベル API なので変更しない判断は妥当。Pod が flatten 一回で接続する単一経路 (要件) と整合。
+- ビルド・テストは緑で、警告は事前から存在する `llm-worker/timeline.rs` の `end_scope` のみ — 本チケットによる退行なし。
+
+## アーキテクチャ・スコープ
+
+- レイヤ境界: `Segment` / placeholder / Alert の生成は **Pod 層** に閉じており、`llm-worker` には漏れていない (Worker は引き続き String を受け取る)。`MEMORY.md` の「llm-worker は低レベル基盤に留める」方針を守れている。
+- TUI 側は `submit_segments` が新責務として追加されただけで、parser や resolver は持ち込まれていない。submit-tui-completion で扱う `@`/`#`/`/` 補完は範囲外、適切に分離されている。
+- 新規の resolver trait は導入されておらず、要件通り「variant 定義 + 未登録時フォールバック」で着地している。後続チケット (memory / workflow) のための余分な抽象化なし。
+- `flatten_segments` を `Pod::run` から呼ぶ形に閉じ込めた点も妥当: 本文展開ロジックを 1 箇所に集中。
+- 新依存の追加なし、新クレートの追加なし。`alerter.rs` / `notify_buffer.rs` は同チケットの notification-naming-cleanup のリネームを取り込んだ既存リファクタの一部であり、本チケットの範囲とは独立して整理されている (本チケット由来ではない)。
+
+## 指摘事項
+
+### Blocking
+なし。
+
+### Non-blocking / Follow-up
+- **session log replay は paste チップを失う**: 要件本文の「session log / Event::UserMessage 上ではラベル化情報を保持」のうち、Event 経路は満たしているが session log は inlined テキストのみを保持し、`restore_history` で `vec![Segment::text(text)]` に潰れる (`crates/tui/src/app.rs:373-376`)。完了条件の方では「Event 経由の再描画では `[Clipboard #N | ...]` が復元される」と Event 経路に絞られているため本チケットでは合格判断としたが、後で GUI / 別クライアントが履歴 fetch する場面で paste 識別が失われる。完全に保持するには Worker history か session_store に typed segments を別途保存する必要があるため、後続チケット (例えば native-gui-mvp や memory 関連) で「session log にも segment metadata を残すか」を扱うのがよい。
+- **`Segment::Unknown` の end-to-end 統合テストがない**: protocol レベルの deserialize テストはあるが、Pod 統合テストでは FileRef だけが Alert + placeholder の両発火を確認している。Unknown は同一の `flatten_segments` 分岐を通るので回帰耐性は十分だが、forward-compat の信頼の証として 1 ケース足してもよい。
+- **`Event::UserMessage` 経由の paste チップ復元は live subscriber のみが受け取れる**: 後発接続クライアントは `GetHistory` で取れるのが Worker の `Item::Message`（flatten 済み文字列）だけ。上記 1 点目と同じ根の話。
+
+### Nits
+- `Segment::Unknown` を再シリアライズすると `{"kind":"unknown"}` になり情報損失するが、本チケットでは forward-compat の片方向だけで十分という整理 (`crates/protocol/src/lib.rs:121-122` のコメントに明記済み)。意図通り。
+- `flatten_segments` の placeholder 文言 (`[unresolved file ref: …]` 等) は LLM 側プロンプトの一部になる。将来 prompt catalog に逃がすかは別途検討すべきかも (現時点では英語固定で OK)。
+- `crates/tui/src/ui.rs:404` で `lines: line_count` と `lines` フィールドのシャドウイングを避けるため `line_count` にリネームしているのは適切。
+
+## 判断
+**Approve** — チケットの要件と完了条件はすべて満たされており、forward-compat と hybrid フォールバックの両経路が end-to-end のテストで立証されている。session log 側の paste チップ保持は要件本文に言及があるものの完了条件は Event 経路に絞られているため、本チケット範囲外として後続チケットでフォローすればよい。コードベースを歪める方向の追加抽象化は持ち込まれておらず、Pod / TUI / protocol の責務分離も保たれている。