diff --git a/README.md b/README.md
index a8834e3..0602088 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 ## 当前阶段
 
-M0 契约基线已建立；M1/M2 第一批可并行能力已集成。
+M0 契约基线已建立；M1 状态、投影与持久化主链已经接通，M2 正在进入真实模型循环。
 
 目前包括：
 
@@ -15,12 +15,20 @@ M0 契约基线已建立；M1/M2 第一批可并行能力已集成。
 - canonical `PlayerView` fixture；
 - 最小娜娜内容包；
 - 原子化状态 reducer，覆盖关系、许诺、知识、持有物、时钟与判定；
-- 可验证追加、恢复和回溯分叉语义的内存 StoryStore；
+- 保持同一语义的内存与 SQLite StoryStore，支持事务追加、恢复和回溯分叉；
+- 写入与恢复时的状态哈希校验；
+- `RuntimeState → PlayerView` 脱敏投影与隐藏信息 canary 测试；
+- `TurnPlan → reducer → SQLite → PlayerView` 单轮提交链；
 - Turn 请求/结果校验、Fake Provider 与确定性世界书触发；
 - 可交互的主演出屏、持有物/线索/许诺、关系与回溯面板。
 
-浏览器模式目前使用确定性的本地 Turn adapter。SQLite、真实 LAPP Turn
-循环和分支持久化仍在后续里程碑中。
+浏览器模式继续使用确定性的本地 Turn adapter，方便无桌面壳开发；Tauri
+模式已经通过 `submit_turn` 使用 SQLite 自动保存和恢复。当前桌面端 provider
+仍是确定性的娜娜纵切实现，真实 LAPP 上下文编译、工具循环和动态演出快照仍在
+后续 M2 中。
+
+当前 Work 环境缺少 Rust 工具链，因此 Rust/Tauri 源码和测试尚未实际编译；
+合并门必须在 Rust 1.96 环境补跑 `pnpm verify:rust` 与桌面启动冒烟。
 
 ## 开发
 
diff --git a/docs/status/2026-07-28-m1-wave2.md b/docs/status/2026-07-28-m1-wave2.md
new file mode 100644
index 0000000..6d2ff3e
--- /dev/null
+++ b/docs/status/2026-07-28-m1-wave2.md
@@ -0,0 +1,137 @@
+# M1/M2 第二并行波次状态
+
+日期：2026-07-28  
+集成分支：`integration/v1`  
+起始基线：`fa8bd0d`
+
+## 本波次目标
+
+从第一波静态契约和内存测试缝继续接通：
+
+- `RuntimeState → PlayerView` 脱敏投影；
+- 与内存实现同语义的 SQLite StoryStore；
+- 持久化单轮 Turn Engine；
+- Tauri `submit_turn` 与浏览器/Tauri 双模式前端桥接；
+- “天亮前一定回来”许诺纵切的首次端到端提交与恢复。
+
+开发时使用 1 个集成人和 3 个独立 worktree。游戏运行时仍是单模型架构，
+没有引入导演 Agent。
+
+## 已集成
+
+### PlayerView 投影
+
+- `project_player_view` 是 `RuntimeState` 到玩家可见状态的唯一纯投影。
+- 仅显示玩家当前持有且存在公开 `ItemSpec` 的物品。
+- 仅显示 `observer == player` 的知识。
+- 仅显示玩家参与、已接受或已结束的许诺。
+- 六维关系只映射为五档区间，不暴露精确数值。
+- 判定、NPC 物品、隐藏事实、内部规则和 NPC-only 许诺不进入视图。
+- 关系更新时间沿当前 lineage 查找最近一次 `nana → player` 变化，不受其他关系边影响。
+
+### SQLite StoryStore
+
+- `nodes`、`materialized_states`、`branch_heads` 三表初始化。
+- `append_node` 使用 `IMMEDIATE` 单事务。
+- 父节点、单根、节点唯一、stale head 与新分支语义和内存实现保持一致。
+- 支持按分支恢复状态、按 ID 读取节点和按节点读取物化状态。
+- 写入与恢复均重新计算 `state_hash`。
+- 节点 JSON 会与 SQLite 中的 story、node、branch、parent 结构列交叉校验。
+- 有效 JSON 的静默损坏、结构列漂移和无效 JSON 都会被拒绝。
+
+### 持久化 Turn Engine
+
+模型侧只能返回内部 `TurnPlan`：
+
+```text
+validate request
+→ load branch state
+→ stale check
+→ provider plan
+→ reducer
+→ state hash
+→ atomic append
+→ infallible PlayerView projection
+→ TurnResult
+```
+
+- 模型不能直接构造最终 `PlayerView`。
+- reducer、provider、store 和序列化错误都在提交前返回。
+- projector 被定义为不可失败的防御性纯边界，消除“已提交但整轮报失败”的窗口。
+- 提交身份由已落库状态覆盖，不信任 projector 提供的 story/node/branch。
+- 上游、规则和存储错误转换为稳定、脱敏的 `TurnFailure`。
+
+### Tauri 纵切
+
+- 首次启动在应用数据目录创建 SQLite 数据库并播种根节点。
+- 启动时严格区分全新数据库、缺分支数据库和损坏数据库。
+- `get_demo_player_view` 从已保存状态、当前节点和 lineage 重新投影。
+- `submit_turn` 走真实 Turn Engine 与 SQLite，而不是静态 `PlayerView`。
+- 许诺“天亮前一定回来”会创建 accepted Promise、提高 hope、保存节点并返回脱敏视图。
+- 重新打开文件数据库后恢复同一节点、许诺、关系档位和当前线路历史。
+- 浏览器开发模式仍保留确定性 adapter；Tauri 模式通过同一前端 API 调用命令。
+
+## 安全修正
+
+交叉审查额外修正了以下问题：
+
+- NPC 与 NPC 之间的许诺不会通过许诺侧栏或历史标签泄漏。
+- NPC-only 关系变化不会触发玩家关系“最近更新”提示。
+- 历史 lineage 损坏在启动恢复时会作为存档错误上报，不伪装成正常短历史。
+- 节点 ID 使用 story、branch、action 的稳定哈希，避免字符清洗和跨分支碰撞。
+- Tauri 错误保留 `retryable`，前端能读取结构化错误对象的 message。
+
+## 已通过验证
+
+```text
+canonical JSON fixtures parse
+
+node scripts/verify-contracts.mjs
+  15 schemas and TypeScript DTO source hash verified
+
+vue-tsc --noEmit
+
+vitest run
+  4 test files passed
+  12 tests passed
+
+vite build
+  production build succeeded
+
+SQLite schema smoke
+  branch_heads, materialized_states, nodes created in memory
+```
+
+当前源码共声明 55 项 Rust 单元/集成测试，覆盖 reducer、投影、内存/SQLite
+存储、Turn Engine 和 Tauri 纵切。
+
+## 尚未关闭
+
+当前 Work 环境仍没有 `cargo`、`rustc` 和 `rustfmt`，因此 55 项 Rust 测试、
+Tauri 宏展开、rusqlite 编译与桌面启动尚未实际验证。必须在 Rust 1.96 环境执行：
+
+```text
+cargo fmt --all -- --check
+cargo clippy --workspace --all-targets -- -D warnings
+cargo test --workspace
+cargo run -p nana-contracts -- --check
+pnpm tauri dev
+```
+
+在这些命令通过前，不把 M0/M1 标记为完成。
+
+## 已知的下一阶段缺口
+
+- Tauri provider 目前是确定性的娜娜纵切，不是真实 LAPP 模型调用。
+- 动态 suggestions 和完整 scene/expression/pose 快照尚未进入持久化节点；真实
+  provider 接入前必须冻结 presentation snapshot 契约。
+- 回溯面板尚未调用创建分支命令。
+- SQLite 尚未加入 schema migration 版本和多实例 busy timeout。
+
+## 下一波次
+
+1. 在 Rust 1.96 环境关闭首次编译、格式、Clippy 与 Tauri 启动门。
+2. 冻结可恢复的 presentation snapshot，避免动态建议和视觉状态在重启后漂移。
+3. 用 `lapp-rs` 接入真实非流式 TurnPlan provider，并继续保留 Fake Provider CI。
+4. 接入上下文编译与类型化工具循环，确保整轮只有一次提交。
+5. 为回溯面板增加“从这里继续”命令，验证旧分支保留和新分支状态隔离。
diff --git a/fixtures/runtime-state/initial.json b/fixtures/runtime-state/initial.json
index 4ac586b..4ba93e5 100644
--- a/fixtures/runtime-state/initial.json
+++ b/fixtures/runtime-state/initial.json
@@ -19,7 +19,7 @@
     {
       "id": "knowledge_station_clock",
       "observer": "player",
-      "subject": "old_station_platform",
+      "subject": "停摆的站钟",
       "fact": "站钟停在四点十七分，似乎并非自然损坏。",
       "certainty": "confirmed",
       "source": "玩家进入站台时亲眼观察",
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 588c2dc..fd555c8 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -15,7 +15,9 @@ tauri-build = { version = "2", features = [] }
 
 [dependencies]
 nana-domain.workspace = true
+nana-engine.workspace = true
 nana-runtime.workspace = true
+nana-store.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 tauri = { version = "2", features = [] }
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 4bfc11b..13110ad 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -1,28 +1,518 @@
+use std::{fs, path::Path};
+
 use nana_domain::{
-    AppInfo, DemoPackSummary, DOMAIN_SCHEMA_VERSION, PlayerView, ResourceBundle, ValidationIssue,
-    validate_bundle,
+    ActionSuggestion, AppInfo, BeatKind, DemoPackSummary, HistoryNodeView, PlayerView,
+    PresentationBeat, Promise, PromiseStatus, PromiseWeight, RelationshipAdjustment,
+    RelationshipDimension, ResourceBundle, RuntimeState, StateDelta, StateOp, StoryNode,
+    TurnFailure, TurnFailureCode, TurnIntent, TurnRequest, TurnResult, ValidationIssue,
+    VisualDirective, DOMAIN_SCHEMA_VERSION, stable_json_hash, validate_bundle,
 };
+use nana_engine::{
+    PlayerViewProjectionContext, SceneMetadata, project_player_view,
+};
+use nana_runtime::{
+    ProviderError, TurnEngine, TurnPlan, TurnPlanProvider, TurnProjector,
+};
+use nana_store::{SqliteStoryStore, StoreError, StoryStore};
 use serde::Serialize;
+use tauri::Manager;
 
 const DEMO_PLAYER_VIEW: &str = include_str!("../../fixtures/player-view/initial.json");
+const DEMO_RUNTIME_STATE: &str = include_str!("../../fixtures/runtime-state/initial.json");
 const DEMO_BUNDLE: &str = include_str!("../../content/nana-demo/bundle.json");
+const DEMO_STORY_ID: &str = "story_nana_demo";
+const DEMO_BRANCH_ID: &str = "branch_main";
+const PLAYER_ID: &str = "player";
+const CHARACTER_ID: &str = "nana";
 
 #[derive(Debug, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct CommandError {
-    code: &'static str,
+    code: String,
     message: String,
+    retryable: bool,
     issues: Vec<ValidationIssue>,
 }
 
 impl CommandError {
     fn parse(target: &str, error: &serde_json::Error) -> Self {
         Self {
-            code: "invalid_embedded_json",
+            code: "invalid_embedded_json".to_owned(),
             message: format!("failed to parse embedded {target}: {error}"),
+            retryable: false,
             issues: Vec::new(),
         }
     }
+
+    fn storage(_error: &StoreError) -> Self {
+        Self {
+            code: "storage_unavailable".to_owned(),
+            message: "故事存档暂时不可用。".to_owned(),
+            retryable: true,
+            issues: Vec::new(),
+        }
+    }
+
+    fn turn(failure: TurnFailure) -> Self {
+        Self {
+            code: turn_failure_code(failure.code).to_owned(),
+            message: failure.message,
+            retryable: failure.retryable,
+            issues: Vec::new(),
+        }
+    }
+}
+
+struct DemoAppState {
+    store: SqliteStoryStore,
+    bundle: ResourceBundle,
+}
+
+impl DemoAppState {
+    fn open(path: impl AsRef<Path>) -> Result<Self, CommandError> {
+        let store = SqliteStoryStore::open(path).map_err(|error| CommandError::storage(&error))?;
+        Self::from_store(store)
+    }
+
+    #[cfg(test)]
+    fn open_in_memory() -> Result<Self, CommandError> {
+        let store =
+            SqliteStoryStore::open_in_memory().map_err(|error| CommandError::storage(&error))?;
+        Self::from_store(store)
+    }
+
+    fn from_store(store: SqliteStoryStore) -> Result<Self, CommandError> {
+        let bundle: ResourceBundle = serde_json::from_str(DEMO_BUNDLE)
+            .map_err(|error| CommandError::parse("content bundle", &error))?;
+        let report = validate_bundle(&bundle);
+        if !report.is_valid() {
+            return Err(CommandError {
+                code: "invalid_content_bundle".to_owned(),
+                message: "the embedded content bundle failed domain validation".to_owned(),
+                retryable: false,
+                issues: report.issues,
+            });
+        }
+
+        match store.load_state(DEMO_STORY_ID, DEMO_BRANCH_ID) {
+            Ok(state) => {
+                store
+                    .load_node(&state.story_id, &state.current_node)
+                    .map_err(|error| CommandError::storage(&error))?;
+            }
+            Err(StoreError::StoryNotFound(_)) => seed_demo_story(&store)?,
+            Err(error) => return Err(CommandError::storage(&error)),
+        }
+
+        Ok(Self { store, bundle })
+    }
+
+    fn pack_summary(&self) -> DemoPackSummary {
+        DemoPackSummary {
+            id: self.bundle.id.clone(),
+            display_name: self.bundle.display_name.clone(),
+            revision: self.bundle.revision.clone(),
+            characters: self.bundle.characters.len(),
+            world_books: self.bundle.world_books.len(),
+            personas: self.bundle.personas.len(),
+            plot_modules: self.bundle.plot_modules.len(),
+            item_specs: self.bundle.item_specs.len(),
+        }
+    }
+
+    fn current_player_view(&self) -> Result<PlayerView, CommandError> {
+        let state = self
+            .store
+            .load_state(DEMO_STORY_ID, DEMO_BRANCH_ID)
+            .map_err(|error| CommandError::storage(&error))?;
+        let node = self
+            .store
+            .load_node(&state.story_id, &state.current_node)
+            .map_err(|error| CommandError::storage(&error))?;
+        let lineage = self
+            .load_lineage(&node)
+            .map_err(|error| CommandError::storage(&error))?;
+        Ok(self.project_view_with_lineage(
+            &state,
+            &node,
+            &default_suggestions(),
+            &lineage,
+        ))
+    }
+
+    fn submit_turn(&self, request: &TurnRequest) -> Result<TurnResult, CommandError> {
+        let provider = DemoPlanProvider;
+        let projector = DemoProjector { app: self };
+        let mut engine = TurnEngine::new(&self.store, provider, projector);
+        engine
+            .submit_turn(request)
+            .map_err(CommandError::turn)
+    }
+
+    fn project_view(
+        &self,
+        state: &RuntimeState,
+        node: &StoryNode,
+        suggestions: &[ActionSuggestion],
+    ) -> PlayerView {
+        let lineage = self
+            .load_lineage(node)
+            .unwrap_or_else(|_| vec![node.clone()]);
+        self.project_view_with_lineage(state, node, suggestions, &lineage)
+    }
+
+    fn project_view_with_lineage(
+        &self,
+        state: &RuntimeState,
+        node: &StoryNode,
+        suggestions: &[ActionSuggestion],
+        lineage: &[StoryNode],
+    ) -> PlayerView {
+        let history = history_for(lineage, node);
+        let relationship_updated_at_node = last_player_relationship_update(lineage);
+        let character_name = self
+            .bundle
+            .characters
+            .iter()
+            .find(|character| character.header.id == self.bundle.entry_character)
+            .map_or("角色", |character| character.name.as_str());
+        project_player_view(
+            state,
+            &PlayerViewProjectionContext {
+                player_id: PLAYER_ID,
+                relationship_character_id: CHARACTER_ID,
+                relationship_updated_at_node,
+                item_specs: &self.bundle.item_specs,
+                scene: SceneMetadata {
+                    scene_id: "old_station_platform",
+                    scene_title: "旧青川站",
+                    character_name,
+                },
+                beats: &node.beats,
+                suggestions,
+                history: &history,
+                can_continue: true,
+            },
+        )
+    }
+
+    fn load_lineage(&self, current: &StoryNode) -> Result<Vec<StoryNode>, StoreError> {
+        let mut lineage = vec![current.clone()];
+        let mut cursor = current.parent_id.clone();
+
+        while let Some(node_id) = cursor {
+            if lineage.len() >= 200 {
+                return Err(StoreError::StateMismatch(
+                    "story lineage exceeds the projection limit",
+                ));
+            }
+            let node = self.store.load_node(&current.story_id, &node_id)?;
+            cursor = node.parent_id.clone();
+            lineage.push(node);
+        }
+
+        lineage.reverse();
+        Ok(lineage)
+    }
+}
+
+struct DemoPlanProvider;
+
+impl TurnPlanProvider for DemoPlanProvider {
+    fn plan_turn(
+        &mut self,
+        request: &TurnRequest,
+        state: &RuntimeState,
+    ) -> Result<TurnPlan, ProviderError> {
+        let committed_node_id = node_id_for_action(request);
+        let accepted_promise = is_return_promise(&request.input)
+            && !state.promises.iter().any(|promise| {
+                promise.promiser == PLAYER_ID
+                    && promise.promisee == CHARACTER_ID
+                    && matches!(
+                        promise.status,
+                        PromiseStatus::Accepted | PromiseStatus::Fulfilled
+                    )
+            });
+
+        let (beats, delta) = if accepted_promise {
+            promise_turn(request, &committed_node_id)
+        } else if request.intent == TurnIntent::Continue {
+            continue_turn(request, state)
+        } else {
+            regular_turn(request)
+        };
+
+        Ok(TurnPlan {
+            committed_node_id,
+            beats,
+            delta,
+            suggestions: default_suggestions(),
+        })
+    }
+}
+
+struct DemoProjector<'a> {
+    app: &'a DemoAppState,
+}
+
+impl TurnProjector for DemoProjector<'_> {
+    fn project_committed_turn(
+        &mut self,
+        state: &RuntimeState,
+        node: &StoryNode,
+        suggestions: &[ActionSuggestion],
+    ) -> PlayerView {
+        self.app.project_view(state, node, suggestions)
+    }
+}
+
+fn seed_demo_story(store: &SqliteStoryStore) -> Result<(), CommandError> {
+    let state: RuntimeState = serde_json::from_str(DEMO_RUNTIME_STATE)
+        .map_err(|error| CommandError::parse("RuntimeState fixture", &error))?;
+    let view: PlayerView = serde_json::from_str(DEMO_PLAYER_VIEW)
+        .map_err(|error| CommandError::parse("PlayerView fixture", &error))?;
+    let state_bytes = serde_json::to_vec(&state)
+        .map_err(|error| CommandError::parse("RuntimeState fixture", &error))?;
+    let root = StoryNode {
+        id: state.current_node.clone(),
+        story_id: state.story_id.clone(),
+        branch_id: state.current_branch.clone(),
+        parent_id: None,
+        action_id: "story_created".to_owned(),
+        user_input: String::new(),
+        beats: view.beats,
+        delta: StateDelta { ops: Vec::new() },
+        state_hash: stable_json_hash(&state_bytes),
+    };
+    store
+        .append_node(&root, &state)
+        .map_err(|error| CommandError::storage(&error))
+}
+
+fn promise_turn(request: &TurnRequest, node_id: &str) -> (Vec<PresentationBeat>, StateDelta) {
+    let beats = vec![
+        player_action_beat(request),
+        PresentationBeat {
+            id: format!("{}_nana", request.action_id),
+            kind: BeatKind::Dialogue,
+            speaker: Some("娜娜".to_owned()),
+            text: "娜娜看了你一会儿，终于松开攥紧外套的手。“好。我等你到天亮。”".to_owned(),
+            visual: Some(VisualDirective {
+                character: Some(CHARACTER_ID.to_owned()),
+                expression: Some("relieved".to_owned()),
+                pose: Some("holding_coat".to_owned()),
+                scene: None,
+            }),
+        },
+    ];
+    let delta = StateDelta {
+        ops: vec![
+            StateOp::CreatePromise {
+                promise: Promise {
+                    id: format!("promise_return_before_dawn_{}", request.action_id),
+                    promiser: PLAYER_ID.to_owned(),
+                    promisee: CHARACTER_ID.to_owned(),
+                    content: "天亮前一定回来".to_owned(),
+                    status: PromiseStatus::Accepted,
+                    weight: PromiseWeight::Major,
+                    created_at: node_id.to_owned(),
+                    accepted_at: Some(node_id.to_owned()),
+                    resolved_at: None,
+                },
+            },
+            StateOp::AdjustRelationship {
+                from: CHARACTER_ID.to_owned(),
+                to: PLAYER_ID.to_owned(),
+                adjustment: RelationshipAdjustment {
+                    dimension: RelationshipDimension::Hope,
+                    delta: 4,
+                    cause: "娜娜接受了玩家天亮前归来的许诺".to_owned(),
+                    judgment_rule: Some("nana.promises.accepted".to_owned()),
+                },
+            },
+        ],
+    };
+    (beats, delta)
+}
+
+fn continue_turn(request: &TurnRequest, state: &RuntimeState) -> (Vec<PresentationBeat>, StateDelta) {
+    let beats = vec![
+        PresentationBeat {
+            id: format!("{}_rain", request.action_id),
+            kind: BeatKind::Narration,
+            speaker: None,
+            text: "一阵风越过站台，雨点敲在铁棚上，短暂盖过了远处的水声。".to_owned(),
+            visual: None,
+        },
+        PresentationBeat {
+            id: format!("{}_nana", request.action_id),
+            kind: BeatKind::Dialogue,
+            speaker: Some("娜娜".to_owned()),
+            text: "如果你还没想好，就先听一会儿雨吧。".to_owned(),
+            visual: Some(VisualDirective {
+                character: Some(CHARACTER_ID.to_owned()),
+                expression: Some("guarded".to_owned()),
+                pose: None,
+                scene: None,
+            }),
+        },
+    ];
+    let ops = state
+        .clocks
+        .iter()
+        .any(|clock| clock.id == "clock_dawn")
+        .then(|| StateOp::AdvanceClock {
+            clock_id: "clock_dawn".to_owned(),
+            delta: 1,
+        })
+        .into_iter()
+        .collect();
+    (beats, StateDelta { ops })
+}
+
+fn regular_turn(request: &TurnRequest) -> (Vec<PresentationBeat>, StateDelta) {
+    (
+        vec![
+            player_action_beat(request),
+            PresentationBeat {
+                id: format!("{}_nana", request.action_id),
+                kind: BeatKind::Dialogue,
+                speaker: Some("娜娜".to_owned()),
+                text: "娜娜静静听完，攥着外套的手稍微松开了一些。“我知道了。”".to_owned(),
+                visual: Some(VisualDirective {
+                    character: Some(CHARACTER_ID.to_owned()),
+                    expression: Some("uneasy".to_owned()),
+                    pose: Some("holding_coat".to_owned()),
+                    scene: None,
+                }),
+            },
+        ],
+        StateDelta { ops: Vec::new() },
+    )
+}
+
+fn player_action_beat(request: &TurnRequest) -> PresentationBeat {
+    PresentationBeat {
+        id: format!("{}_player", request.action_id),
+        kind: BeatKind::Action,
+        speaker: Some("你".to_owned()),
+        text: request.input.clone(),
+        visual: None,
+    }
+}
+
+fn default_suggestions() -> Vec<ActionSuggestion> {
+    vec![
+        ActionSuggestion {
+            id: "suggestion_promise".to_owned(),
+            label: "认真答应她".to_owned(),
+            draft: "我答应你，天亮前一定回来。".to_owned(),
+        },
+        ActionSuggestion {
+            id: "suggestion_ask".to_owned(),
+            label: "追问原因".to_owned(),
+            draft: "你为什么这么在意天亮之前？".to_owned(),
+        },
+        ActionSuggestion {
+            id: "suggestion_observe".to_owned(),
+            label: "先观察她".to_owned(),
+            draft: "我没有立刻回答，先看了看她攥紧外套的手。".to_owned(),
+        },
+    ]
+}
+
+fn node_id_for_action(request: &TurnRequest) -> String {
+    let identity = format!(
+        "{}\0{}\0{}",
+        request.story_id, request.branch_id, request.action_id
+    );
+    format!(
+        "node_{}",
+        stable_json_hash(identity.as_bytes()).trim_start_matches("sha256:")
+    )
+}
+
+fn is_return_promise(input: &str) -> bool {
+    input.contains("天亮前") && input.contains("回来")
+}
+
+fn history_label(node: &StoryNode) -> String {
+    if node.parent_id.is_none() {
+        return "雨夜车站".to_owned();
+    }
+    if node
+        .delta
+        .ops
+        .iter()
+        .any(|op| {
+            matches!(
+                op,
+                StateOp::CreatePromise { promise }
+                    if is_player_visible_promise(promise)
+            )
+        })
+    {
+        return "天亮前的许诺".to_owned();
+    }
+    if node.user_input.is_empty() {
+        return "雨声中的停顿".to_owned();
+    }
+    let summary = node.user_input.chars().take(12).collect::<String>();
+    format!("回应：{summary}")
+}
+
+fn history_for(lineage: &[StoryNode], current: &StoryNode) -> Vec<HistoryNodeView> {
+    lineage
+        .iter()
+        .map(|node| HistoryNodeView {
+            id: node.id.clone(),
+            parent_id: node.parent_id.clone(),
+            branch_id: node.branch_id.clone(),
+            label: history_label(node),
+            is_current: node.id == current.id,
+        })
+        .collect()
+}
+
+fn last_player_relationship_update(lineage: &[StoryNode]) -> Option<&str> {
+    lineage.iter().rev().find_map(|node| {
+        node.delta
+            .ops
+            .iter()
+            .any(|op| {
+                matches!(
+                    op,
+                    StateOp::AdjustRelationship { from, to, .. }
+                        if from == CHARACTER_ID && to == PLAYER_ID
+                )
+            })
+            .then_some(node.id.as_str())
+    })
+}
+
+fn is_player_visible_promise(promise: &Promise) -> bool {
+    (promise.promiser == PLAYER_ID || promise.promisee == PLAYER_ID)
+        && matches!(
+            promise.status,
+            PromiseStatus::Accepted
+                | PromiseStatus::Fulfilled
+                | PromiseStatus::Broken
+                | PromiseStatus::Released
+                | PromiseStatus::Impossible
+        )
+}
+
+const fn turn_failure_code(code: TurnFailureCode) -> &'static str {
+    match code {
+        TurnFailureCode::StaleNode => "stale_node",
+        TurnFailureCode::InvalidInput => "invalid_input",
+        TurnFailureCode::InvalidModelOutput => "invalid_model_output",
+        TurnFailureCode::ProviderUnavailable => "provider_unavailable",
+        TurnFailureCode::Cancelled => "cancelled",
+        TurnFailureCode::TimedOut => "timed_out",
+        TurnFailureCode::Internal => "internal",
+    }
 }
 
 #[tauri::command]
@@ -35,42 +525,39 @@ fn get_app_info() -> AppInfo {
 }
 
 #[tauri::command]
-fn get_demo_player_view() -> Result<PlayerView, CommandError> {
-    serde_json::from_str(DEMO_PLAYER_VIEW)
-        .map_err(|error| CommandError::parse("PlayerView fixture", &error))
+fn get_demo_player_view(state: tauri::State<'_, DemoAppState>) -> Result<PlayerView, CommandError> {
+    state.current_player_view()
 }
 
 #[tauri::command]
-fn get_demo_pack_summary() -> Result<DemoPackSummary, CommandError> {
-    let bundle: ResourceBundle = serde_json::from_str(DEMO_BUNDLE)
-        .map_err(|error| CommandError::parse("content bundle", &error))?;
-    let report = validate_bundle(&bundle);
-    if !report.is_valid() {
-        return Err(CommandError {
-            code: "invalid_content_bundle",
-            message: "the embedded content bundle failed domain validation".to_owned(),
-            issues: report.issues,
-        });
-    }
-    Ok(DemoPackSummary {
-        id: bundle.id,
-        display_name: bundle.display_name,
-        revision: bundle.revision,
-        characters: bundle.characters.len(),
-        world_books: bundle.world_books.len(),
-        personas: bundle.personas.len(),
-        plot_modules: bundle.plot_modules.len(),
-        item_specs: bundle.item_specs.len(),
-    })
+fn get_demo_pack_summary(state: tauri::State<'_, DemoAppState>) -> DemoPackSummary {
+    state.pack_summary()
+}
+
+#[tauri::command]
+fn submit_turn(
+    state: tauri::State<'_, DemoAppState>,
+    request: TurnRequest,
+) -> Result<TurnResult, CommandError> {
+    state.submit_turn(&request)
 }
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
+        .setup(|app| {
+            let app_data = app.path().app_data_dir()?;
+            fs::create_dir_all(&app_data)?;
+            let demo = DemoAppState::open(app_data.join("nana-story.sqlite3"))
+                .map_err(|error| std::io::Error::other(error.message))?;
+            app.manage(demo);
+            Ok(())
+        })
         .invoke_handler(tauri::generate_handler![
             get_app_info,
             get_demo_pack_summary,
-            get_demo_player_view
+            get_demo_player_view,
+            submit_turn
         ])
         .run(tauri::generate_context!())
         .expect("failed to run nana-story");
@@ -78,19 +565,193 @@ pub fn run() {
 
 #[cfg(test)]
 mod tests {
-    use super::{get_demo_pack_summary, get_demo_player_view};
+    use std::{
+        fs,
+        path::{Path, PathBuf},
+        time::{SystemTime, UNIX_EPOCH},
+    };
 
-    #[test]
-    fn embedded_player_view_is_valid() {
-        let view = get_demo_player_view().expect("valid PlayerView fixture");
-        assert_eq!(view.character_name, "娜娜");
-        assert!(!view.beats.is_empty());
+    use nana_domain::{
+        Promise, PromiseStatus, PromiseWeight, RelationshipAdjustment,
+        RelationshipBand, RelationshipDimension, StateDelta, StateOp, StoryNode,
+        TurnIntent, TurnRequest,
+    };
+    use nana_store::StoryStore;
+
+    use super::{
+        DemoAppState, DEMO_BRANCH_ID, DEMO_STORY_ID, history_label,
+        last_player_relationship_update,
+    };
+
+    struct TemporaryDatabase {
+        path: PathBuf,
+    }
+
+    impl TemporaryDatabase {
+        fn new() -> Self {
+            let nonce = SystemTime::now()
+                .duration_since(UNIX_EPOCH)
+                .unwrap_or_default()
+                .as_nanos();
+            Self {
+                path: std::env::temp_dir().join(format!(
+                    "nana-story-app-{}-{nonce}.sqlite3",
+                    std::process::id()
+                )),
+            }
+        }
+
+        fn path(&self) -> &Path {
+            &self.path
+        }
+    }
+
+    impl Drop for TemporaryDatabase {
+        fn drop(&mut self) {
+            if self.path.exists() {
+                fs::remove_file(&self.path).expect("remove temporary app database");
+            }
+        }
+    }
+
+    fn promise_request(expected_node_id: &str) -> TurnRequest {
+        TurnRequest {
+            story_id: DEMO_STORY_ID.to_owned(),
+            branch_id: DEMO_BRANCH_ID.to_owned(),
+            expected_node_id: expected_node_id.to_owned(),
+            action_id: "action_promise_test".to_owned(),
+            intent: TurnIntent::SpeakOrAct,
+            input: "我答应你，天亮前一定回来。".to_owned(),
+        }
+    }
+
+    fn node(id: &str, parent_id: Option<&str>, ops: Vec<StateOp>) -> StoryNode {
+        StoryNode {
+            id: id.to_owned(),
+            story_id: DEMO_STORY_ID.to_owned(),
+            branch_id: DEMO_BRANCH_ID.to_owned(),
+            parent_id: parent_id.map(str::to_owned),
+            action_id: format!("action_{id}"),
+            user_input: "继续前进".to_owned(),
+            beats: Vec::new(),
+            delta: StateDelta { ops },
+            state_hash: format!("hash_{id}"),
+        }
     }
 
     #[test]
-    fn embedded_content_bundle_is_valid() {
-        let summary = get_demo_pack_summary().expect("valid demo bundle");
-        assert_eq!(summary.characters, 1);
-        assert_eq!(summary.plot_modules, 1);
+    fn embedded_demo_is_seeded_and_projected_from_runtime_state() {
+        let app = DemoAppState::open_in_memory().expect("valid demo");
+        let view = app.current_player_view().expect("initial PlayerView");
+
+        assert_eq!(view.character_name, "娜娜");
+        assert_eq!(view.node_id, "node_001");
+        assert_eq!(view.inventory.len(), 1);
+        assert_eq!(view.relationship.trust, RelationshipBand::Guarded);
+        assert!(!view.beats.is_empty());
+        assert_eq!(app.pack_summary().plot_modules, 1);
+    }
+
+    #[test]
+    fn promise_turn_reduces_persists_and_restores_before_projection() {
+        let app = DemoAppState::open_in_memory().expect("valid demo");
+        let result = app
+            .submit_turn(&promise_request("node_001"))
+            .expect("committed turn");
+
+        assert_eq!(result.player_view.promises.len(), 1);
+        assert_eq!(result.player_view.promises[0].content, "天亮前一定回来");
+        assert_eq!(result.player_view.history.len(), 2);
+
+        let persisted = app
+            .store
+            .load_state(DEMO_STORY_ID, DEMO_BRANCH_ID)
+            .expect("persisted state");
+        assert_eq!(persisted.current_node, result.committed_node_id);
+        assert_eq!(persisted.relationships["nana->player"].hope, 35);
+
+        let restored = app.current_player_view().expect("restored PlayerView");
+        assert_eq!(restored.node_id, result.committed_node_id);
+        assert_eq!(restored.promises, result.player_view.promises);
+    }
+
+    #[test]
+    fn file_database_reopens_at_the_committed_player_view() {
+        let database = TemporaryDatabase::new();
+        let committed = {
+            let app = DemoAppState::open(database.path()).expect("new file demo");
+            app.submit_turn(&promise_request("node_001"))
+                .expect("committed file turn")
+                .player_view
+        };
+
+        let reopened = DemoAppState::open(database.path()).expect("reopened file demo");
+        let restored = reopened.current_player_view().expect("restored file view");
+
+        assert_eq!(restored.node_id, committed.node_id);
+        assert_eq!(restored.promises, committed.promises);
+        assert_eq!(restored.relationship, committed.relationship);
+        assert_eq!(restored.history, committed.history);
+    }
+
+    #[test]
+    fn player_view_does_not_serialize_hidden_item_facts_or_checks() {
+        let app = DemoAppState::open_in_memory().expect("valid demo");
+        let rendered =
+            serde_json::to_string(&app.current_player_view().expect("PlayerView")).expect("JSON");
+
+        assert!(!rendered.contains("电池仓"));
+        assert!(!rendered.contains("\"checks\""));
+        assert!(!rendered.contains("\"roll\""));
+        assert!(!rendered.contains("\"target\""));
+    }
+
+    #[test]
+    fn history_does_not_reveal_npc_only_promises() {
+        let private_promise = Promise {
+            id: "private".to_owned(),
+            promiser: "nana".to_owned(),
+            promisee: "sister".to_owned(),
+            content: "不能让玩家知道".to_owned(),
+            status: PromiseStatus::Accepted,
+            weight: PromiseWeight::Major,
+            created_at: "node_private".to_owned(),
+            accepted_at: Some("node_private".to_owned()),
+            resolved_at: None,
+        };
+        let private_node = node(
+            "node_private",
+            Some("node_001"),
+            vec![StateOp::CreatePromise {
+                promise: private_promise,
+            }],
+        );
+
+        assert_eq!(history_label(&private_node), "回应：继续前进");
+    }
+
+    #[test]
+    fn relationship_metadata_tracks_latest_visible_edge_across_later_nodes() {
+        let root = node("node_001", None, Vec::new());
+        let changed = node(
+            "node_002",
+            Some("node_001"),
+            vec![StateOp::AdjustRelationship {
+                from: "nana".to_owned(),
+                to: "player".to_owned(),
+                adjustment: RelationshipAdjustment {
+                    dimension: RelationshipDimension::Trust,
+                    delta: 2,
+                    cause: "test".to_owned(),
+                    judgment_rule: None,
+                },
+            }],
+        );
+        let current = node("node_003", Some("node_002"), Vec::new());
+
+        assert_eq!(
+            last_player_relationship_update(&[root, changed, current]),
+            Some("node_002")
+        );
     }
 }
diff --git a/src/app/useDemo.ts b/src/app/useDemo.ts
index 1216da9..56019ae 100644
--- a/src/app/useDemo.ts
+++ b/src/app/useDemo.ts
@@ -2,7 +2,25 @@ import { onMounted, ref } from "vue";
 
 import type { AppInfo, DemoPackSummary, PlayerView, TurnIntent, TurnRequest } from "@contracts";
 
-import { getAppInfo, getDemoPackSummary, getDemoPlayerView, submitTurn as submitRuntimeTurn } from "./bridge";
+import {
+  getAppInfo,
+  getDemoPackSummary,
+  getDemoPlayerView,
+  submitTurn as submitRuntimeTurn
+} from "./bridge";
+
+function errorMessage(reason: unknown): string {
+  if (reason instanceof Error) return reason.message;
+  if (
+    typeof reason === "object" &&
+    reason !== null &&
+    "message" in reason &&
+    typeof reason.message === "string"
+  ) {
+    return reason.message;
+  }
+  return String(reason);
+}
 
 export function useDemo() {
   const appInfo = ref<AppInfo | null>(null);
@@ -22,7 +40,7 @@ export function useDemo() {
         getDemoPlayerView()
       ]);
     } catch (reason) {
-      error.value = reason instanceof Error ? reason.message : String(reason);
+      error.value = errorMessage(reason);
     } finally {
       loading.value = false;
     }
@@ -53,7 +71,7 @@ export function useDemo() {
       const result = await submitRuntimeTurn(request, currentView);
       playerView.value = result.playerView;
     } catch (reason) {
-      turnError.value = reason instanceof Error ? reason.message : String(reason);
+      turnError.value = errorMessage(reason);
     } finally {
       busy.value = false;
     }