diff --git a/.gitignore b/.gitignore
index ba6d091..5cd5549 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,8 +30,8 @@ tocodex-docs/
 .codex/
 *.internal.md
 
-# Local commit hooks are machine-specific policy and must never be published.
-/.local-hooks/
+# Local commit policy is machine-specific and must never be published.
+/.pre-commit-config.yaml
 
 # `docs/` is private by default. Public documentation must be reviewed and
 # explicitly added to this file one path at a time; never allowlist another subtree.
diff --git a/nebula_app/src/ai_hook.rs b/nebula_app/src/ai_hook.rs
index 581f8c4..5c58323 100644
--- a/nebula_app/src/ai_hook.rs
+++ b/nebula_app/src/ai_hook.rs
@@ -727,7 +727,8 @@ fn parse_envelope(bytes: &[u8]) -> Option<AiHookEvent> {
         message: message.clone(),
         selection: context_string(&payload, &["selection", "selected_text", "selectedText"]),
         raw_context: sanitized_raw_context(&payload),
-    });    Some(AiHookEvent {
+    });
+    Some(AiHookEvent {
         pane,
         source,
         kind,
@@ -1250,11 +1251,15 @@ mod remote_tests {
         };
         let mut gate = AiHookEventGate::default();
 
-        let done = event("{\"kind\":\"done\",\"session_id\":\"s\",\"bridge_sequence\":3,\"event_id\":\"s:3\"}");
+        let done = event(
+            "{\"kind\":\"done\",\"session_id\":\"s\",\"bridge_sequence\":3,\"event_id\":\"s:3\"}",
+        );
         assert_eq!(gate.verdict(&done, 3), GateVerdict::Accepted);
         assert_eq!(gate.verdict(&done, 3), GateVerdict::DuplicateEventId);
 
-        let older = event("{\"kind\":\"prompt\",\"session_id\":\"s\",\"bridge_sequence\":2,\"event_id\":\"s:2\"}");
+        let older = event(
+            "{\"kind\":\"prompt\",\"session_id\":\"s\",\"bridge_sequence\":2,\"event_id\":\"s:2\"}",
+        );
         assert_eq!(gate.verdict(&older, 3), GateVerdict::StaleSequence);
 
         // 无序号但带 provider 时间戳：走时间判据。
diff --git a/nebula_app/src/display/i18n.rs b/nebula_app/src/display/i18n.rs
index 63a5a7f..8067fdc 100644
--- a/nebula_app/src/display/i18n.rs
+++ b/nebula_app/src/display/i18n.rs
@@ -392,10 +392,7 @@ mod tests {
         let template_iterations = 200_000u128;
         let template_started = Instant::now();
         for _ in 0..template_iterations {
-            black_box(UiLanguage::EnUs.tr_args(
-                "provider.test.success",
-                &[("status", "200")],
-            ));
+            black_box(UiLanguage::EnUs.tr_args("provider.test.success", &[("status", "200")]));
         }
         let template_ns = template_started.elapsed().as_nanos() / template_iterations;
 
diff --git a/nebula_app/src/display/suggest_engine.rs b/nebula_app/src/display/suggest_engine.rs
index c9cf7e9..ff9444c 100644
--- a/nebula_app/src/display/suggest_engine.rs
+++ b/nebula_app/src/display/suggest_engine.rs
@@ -235,8 +235,7 @@ pub(crate) fn suggest_update(
     // 远端目录是异步拉回来的，那一刻 cwd 与行都没变——少了这个代际，拉到的
     // 条目要等用户再多打一个字符才会显形。
     let remote_generation = crate::remote_dirs::generation();
-    let key =
-        format!("{}\u{0}{line}\u{0}{command_generation}\u{0}{remote_generation}", state.cwd);
+    let key = format!("{}\u{0}{line}\u{0}{command_generation}\u{0}{remote_generation}", state.cwd);
     if state.completion_suppressed_line.as_deref() == Some(line.as_str()) {
         state.suggestion_key = key;
         state.suggestion.clear();
diff --git a/nebula_app/src/display/terminal_math.rs b/nebula_app/src/display/terminal_math.rs
index 889c1c5..7db128d 100644
--- a/nebula_app/src/display/terminal_math.rs
+++ b/nebula_app/src/display/terminal_math.rs
@@ -2947,10 +2947,9 @@ mod tests {
         }
         // 同一批内容的行内形态被硬换行拆开时保持原文，不再跨行拼接。
         assert!(
-            scan_grid(&TextGrid::from_rows(&[
-                r"• $\lim_{x\to0}\frac{\sin",
-                r"x}{x}=1$，$PV=nRT$",
-            ]))
+            scan_grid(&TextGrid::from_rows(
+                &[r"• $\lim_{x\to0}\frac{\sin", r"x}{x}=1$，$PV=nRT$",]
+            ))
             .iter()
             .all(|overlay| !overlay.source.contains("lim")),
             "行内公式不得跨真实换行拼接"
diff --git a/nebula_app/src/main.rs b/nebula_app/src/main.rs
index 515fd70..f69d277 100644
--- a/nebula_app/src/main.rs
+++ b/nebula_app/src/main.rs
@@ -92,8 +92,8 @@ mod ssh_session;
 mod ssh_sftp;
 mod string;
 mod svn_status;
-mod taskbar;
 mod sync;
+mod taskbar;
 mod terminal_profiles;
 mod tray;
 mod update_check;
diff --git a/nebula_app/src/panic.rs b/nebula_app/src/panic.rs
index c363776..d3f85ec 100644
--- a/nebula_app/src/panic.rs
+++ b/nebula_app/src/panic.rs
@@ -25,9 +25,8 @@ pub fn attach_handler() {
         // MessageBox 的模态消息泵不能运行在发生 panic 的 GPUI 线程上，否则
         // 会重入 AppCell 并把原始 panic 升级成无诊断信息的 double panic。
         // 等待专用线程结束可保证主线程 unwind 退出前用户仍能看到并复制错误。
-        if let Ok(dialog_thread) = thread::Builder::new()
-            .name("panic-dialog".into())
-            .spawn(move || unsafe {
+        if let Ok(dialog_thread) =
+            thread::Builder::new().name("panic-dialog".into()).spawn(move || unsafe {
                 MessageBoxW(
                     ptr::null_mut(),
                     dialog_message.as_ptr(),
diff --git a/nebula_app/src/process_tree.rs b/nebula_app/src/process_tree.rs
index c148b68..7466996 100644
--- a/nebula_app/src/process_tree.rs
+++ b/nebula_app/src/process_tree.rs
@@ -114,7 +114,10 @@ fn snapshot() -> Result<std::collections::HashMap<u32, (u32, String)>, String> {
 
     let handle = unsafe { CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) };
     if handle == INVALID_HANDLE_VALUE {
-        return Err(format!("CreateToolhelp32Snapshot failed: {}", std::io::Error::last_os_error()));
+        return Err(format!(
+            "CreateToolhelp32Snapshot failed: {}",
+            std::io::Error::last_os_error()
+        ));
     }
 
     let mut processes: HashMap<u32, (u32, String)> = HashMap::new();
@@ -381,9 +384,7 @@ mod tests {
 
     /// 带自定义可执行名的进程表，用来构造「helper 上面隔着一层 shell」的链。
     fn named_table(rows: &[(u32, u32, &str)]) -> HashMap<u32, (u32, String)> {
-        rows.iter()
-            .map(|&(pid, parent, exe)| (pid, (parent, exe.to_owned())))
-            .collect()
+        rows.iter().map(|&(pid, parent, exe)| (pid, (parent, exe.to_owned()))).collect()
     }
 
     /// hook helper 的父进程往往不是 agent 本身：Windows 上 claude 通过
diff --git a/nebula_app/src/remote_dirs.rs b/nebula_app/src/remote_dirs.rs
index 2103f77..3db0a14 100644
--- a/nebula_app/src/remote_dirs.rs
+++ b/nebula_app/src/remote_dirs.rs
@@ -280,10 +280,11 @@ mod tests {
         assert!(!begin_fetch(&env, "/tmp/a"), "已经在拉了");
         assert!(begin_fetch(&env, "/tmp/b"), "另一个目录不受影响");
 
-        finish_fetch(&env, "/tmp/a", Some(vec![RemoteEntry {
-            name: "x".to_owned(),
-            is_dir: false,
-        }]));
+        finish_fetch(
+            &env,
+            "/tmp/a",
+            Some(vec![RemoteEntry { name: "x".to_owned(), is_dir: false }]),
+        );
         assert!(lookup(&env, "/tmp/a").is_some(), "落了缓存");
         assert!(begin_fetch(&env, "/tmp/a"), "拉完就解锁");
     }
diff --git a/nebula_app/src/runtime_api/cli.rs b/nebula_app/src/runtime_api/cli.rs
index 52cb5dd..f8e175b 100644
--- a/nebula_app/src/runtime_api/cli.rs
+++ b/nebula_app/src/runtime_api/cli.rs
@@ -38,10 +38,7 @@ pub(super) fn request_once(
     Ok(serde_json::from_str(&line)?)
 }
 
-pub(super) fn print_response(
-    response: &ApiResponse,
-    pretty: bool,
-) -> Result<(), Box<dyn Error>> {
+pub(super) fn print_response(response: &ApiResponse, pretty: bool) -> Result<(), Box<dyn Error>> {
     if pretty {
         println!("{}", serde_json::to_string_pretty(response)?);
     } else {
@@ -225,8 +222,7 @@ fn run_cli_inner(options: ControlOptions) -> Result<(), Box<dyn Error>> {
             print_response(&response, options.pretty)
         },
         CliCommand::CloseWindow { window } => {
-            let response =
-                request_once("window.close", json!({ "window_id": window }), timeout)?;
+            let response = request_once("window.close", json!({ "window_id": window }), timeout)?;
             print_response(&response, options.pretty)
         },
         CliCommand::Focus { window, pane } => {
diff --git a/nebula_app/src/runtime_api/command.rs b/nebula_app/src/runtime_api/command.rs
index 0763198..9dcf56a 100644
--- a/nebula_app/src/runtime_api/command.rs
+++ b/nebula_app/src/runtime_api/command.rs
@@ -238,10 +238,7 @@ impl RuntimeCommand {
             },
             "tab.close" => {
                 let params: TabTargetParams = parse_params(&request.params)?;
-                Ok(Self::CloseTab {
-                    window_id: params.window_id,
-                    tab_index: params.tab_index,
-                })
+                Ok(Self::CloseTab { window_id: params.window_id, tab_index: params.tab_index })
             },
             "tab.rename" => {
                 let params: RenameTabParams = parse_params(&request.params)?;
@@ -555,9 +552,9 @@ fn validate_multiline_text(text: &str, label: &str) -> Result<(), ApiError> {
         )));
     }
     if text.chars().any(|ch| ch.is_control() && !matches!(ch, '\n' | '\r' | '\t')) {
-        return Err(ApiError::invalid_params(
-            format!("{label} contains unsupported terminal control characters"),
-        ));
+        return Err(ApiError::invalid_params(format!(
+            "{label} contains unsupported terminal control characters"
+        )));
     }
     Ok(())
 }
diff --git a/nebula_app/src/runtime_api/shortcuts.rs b/nebula_app/src/runtime_api/shortcuts.rs
index 8e6788b..5fda978 100644
--- a/nebula_app/src/runtime_api/shortcuts.rs
+++ b/nebula_app/src/runtime_api/shortcuts.rs
@@ -34,9 +34,10 @@ use super::*;
 use crate::cli::{
     AgentCommand, AgentOptions, AgentPasteOptions, AgentReadOptions, AgentSendOptions,
     AgentWaitOptions, EnvOptions, ListOptions, PaneCloseOptions, PaneCommand, PaneExecOptions,
-    PaneOptions, PanePasteOptions, PaneReadOptions, PaneResizeOptions, PaneSendOptions, PaneWaitOptions,
-    PaneZoomOptions, PasteSourceOptions, TabCloseOptions, TabCommand, TabMoveOptions,
-    TabRenameOptions, TabResourceOptions, WindowCloseOptions, WindowCommand, WindowResourceOptions,
+    PaneOptions, PanePasteOptions, PaneReadOptions, PaneResizeOptions, PaneSendOptions,
+    PaneWaitOptions, PaneZoomOptions, PasteSourceOptions, TabCloseOptions, TabCommand,
+    TabMoveOptions, TabRenameOptions, TabResourceOptions, WindowCloseOptions, WindowCommand,
+    WindowResourceOptions,
 };
 use std::fs::File;
 use std::io::Read as _;
@@ -153,11 +154,7 @@ pub fn agent(options: AgentOptions) -> Result<(), Box<dyn Error>> {
 
 fn window_close(options: WindowCloseOptions) -> Result<(), Box<dyn Error>> {
     let timeout = validated_timeout(options.timeout_ms)?;
-    let response = request_once(
-        "window.close",
-        json!({ "window_id": options.window }),
-        timeout,
-    )?;
+    let response = request_once("window.close", json!({ "window_id": options.window }), timeout)?;
     print_response(&response, options.output.pretty)
 }
 
@@ -776,19 +773,15 @@ fn read_paste_source(source: PasteSourceOptions) -> Result<String, Box<dyn Error
     } else {
         joined(&text)
     };
-    validate_paste_text(&value)
-        .map_err(|error| CliError::new("invalid_params", error.message))?;
+    validate_paste_text(&value).map_err(|error| CliError::new("invalid_params", error.message))?;
     Ok(value)
 }
 
 fn read_paste_utf8(reader: impl Read, label: &str) -> Result<String, Box<dyn Error>> {
     let mut bytes = Vec::new();
-    reader
-        .take((MAX_PROMPT_BYTES + 1) as u64)
-        .read_to_end(&mut bytes)
-        .map_err(|error| {
-            CliError::new("input_read_error", format!("could not read paste input {label}: {error}"))
-        })?;
+    reader.take((MAX_PROMPT_BYTES + 1) as u64).read_to_end(&mut bytes).map_err(|error| {
+        CliError::new("input_read_error", format!("could not read paste input {label}: {error}"))
+    })?;
     if bytes.len() > MAX_PROMPT_BYTES {
         return Err(CliError::new(
             "invalid_params",
@@ -797,11 +790,8 @@ fn read_paste_utf8(reader: impl Read, label: &str) -> Result<String, Box<dyn Err
         .into());
     }
     String::from_utf8(bytes).map_err(|error| {
-        CliError::new(
-            "invalid_utf8",
-            format!("paste input {label} is not valid UTF-8: {error}"),
-        )
-        .into()
+        CliError::new("invalid_utf8", format!("paste input {label} is not valid UTF-8: {error}"))
+            .into()
     })
 }
 
@@ -907,16 +897,13 @@ mod tests {
 
     #[test]
     fn paste_reader_is_strict_utf8_and_bounded() {
-        let text = read_paste_utf8(std::io::Cursor::new("first\nsecond"), "memory")
-            .expect("valid UTF-8");
+        let text =
+            read_paste_utf8(std::io::Cursor::new("first\nsecond"), "memory").expect("valid UTF-8");
         assert_eq!(text, "first\nsecond");
         assert!(read_paste_utf8(std::io::Cursor::new([0xff]), "memory").is_err());
         assert!(
-            read_paste_utf8(
-                std::io::Cursor::new(vec![b'x'; MAX_PROMPT_BYTES + 1]),
-                "memory",
-            )
-            .is_err()
+            read_paste_utf8(std::io::Cursor::new(vec![b'x'; MAX_PROMPT_BYTES + 1]), "memory",)
+                .is_err()
         );
     }
 
diff --git a/nebula_app/src/window_context/runtime.rs b/nebula_app/src/window_context/runtime.rs
index 59ea580..43b7170 100644
--- a/nebula_app/src/window_context/runtime.rs
+++ b/nebula_app/src/window_context/runtime.rs
@@ -310,11 +310,7 @@ impl WindowContext {
         Ok(self.close_pane(pane_id))
     }
 
-    pub(crate) fn runtime_set_zoom(
-        &mut self,
-        pane_id: u64,
-        zoomed: bool,
-    ) -> Result<(), ApiError> {
+    pub(crate) fn runtime_set_zoom(&mut self, pane_id: u64, zoomed: bool) -> Result<(), ApiError> {
         let Some(tab_index) = self.tabs.iter().position(|tab| {
             let mut panes = Vec::new();
             tab.layout.leaves(&mut panes);
@@ -344,11 +340,7 @@ impl WindowContext {
         Ok(())
     }
 
-    pub(crate) fn runtime_resize_pane(
-        &mut self,
-        pane_id: u64,
-        ratio: f32,
-    ) -> Result<(), ApiError> {
+    pub(crate) fn runtime_resize_pane(&mut self, pane_id: u64, ratio: f32) -> Result<(), ApiError> {
         let Some(tab_index) = self.tabs.iter().position(|tab| {
             let mut panes = Vec::new();
             tab.layout.leaves(&mut panes);
diff --git a/nebula_app/src/window_context/split.rs b/nebula_app/src/window_context/split.rs
index c08bcc8..05e5fdc 100644
--- a/nebula_app/src/window_context/split.rs
+++ b/nebula_app/src/window_context/split.rs
@@ -133,15 +133,7 @@ impl Layout {
     /// 设置目标 pane 在最近父 Split 中占用的比例。内部 ratio 描述 first，
     /// 因此 second 侧目标要换算成 `1 - target_ratio`。
     pub(super) fn set_leaf_parent_ratio(&mut self, target: PaneId, target_ratio: f32) -> bool {
-        let Layout::Split {
-            ratio,
-            preview_ratio,
-            dragging,
-            first,
-            second,
-            ..
-        } = self
-        else {
+        let Layout::Split { ratio, preview_ratio, dragging, first, second, .. } = self else {
             return false;
         };
 
diff --git a/nebula_app/tests/file_line_budget.rs b/nebula_app/tests/file_line_budget.rs
index d25cba1..4c89cf5 100644
--- a/nebula_app/tests/file_line_budget.rs
+++ b/nebula_app/tests/file_line_budget.rs
@@ -1,118 +1,118 @@
-//! 文件行数预算守护（docs/project-constraints.md 第 1 条）。
-//!
-//! 单个 `.rs` 文件硬上限 2000 行；存量超标文件在 [`GRANDFATHERED`] 登记，
-//! 登记值只允许下调。测试失败的正确动作是拆文件，不是上调预算。
-
-use std::fs;
-use std::path::{Path, PathBuf};
-
-/// 新代码红线：超过它就必须拆（docs/project-constraints.md）。
-const MAX_LINES: usize = 2000;
-
-/// 存量豁免清单（相对仓库根，正斜杠路径 → 行数上限）。
-///
-/// 登记值 = 收录当天的行数加不足百行的呼吸空间：小修小补不触线，成规模
-/// 新增必须伴随拆分。拆小后同步下调或删除对应条目。
-const GRANDFATHERED: &[(&str, usize)] = &[
-    ("nebula_app/src/display/mod.rs", 12000),
-    ("nebula_app/src/display/settings.rs", 8650),
-    // 2026-08-17 上调（4850 → 5150）：git 树 VS Code 化 + 源码 tab 接线；
-    // 下一步应把 VCS 面板拆成独立文件后下调。
-    ("nebula_app/src/gpui_shell/workspace.rs", 5150),
-    // 2026-08-17 下调（3600 → 3550）：网络区拆到 network_settings.rs。
-    ("nebula_app/src/gpui_shell/settings_pane.rs", 3550),
-    ("nebula_app/src/display/command_palette.rs", 3980),
-    ("nebula_app/src/window_context.rs", 3800),
-    ("nebula_app/src/event.rs", 3780),
-    ("nebula_terminal/src/term/mod.rs", 3650),
-    // 2026-08-17 上调（2900 → 2970）：draw_overlays 几何抽成两壳共享的 plan。
-    ("nebula_app/src/display/terminal_math.rs", 2970),
-    // 2026-08-17 上调（2680 → 2760）：SVN wc.db 回退 + 单文件 stage/discard。
-    ("nebula_app/src/display/side_panel.rs", 2760),
-    ("nebula_app/src/gpui_shell/terminal/view.rs", 2540),
-    ("nebula_app/src/display/chrome.rs", 2550),
-    ("nebula_app/src/display/markdown_view.rs", 2150),
-];
-
-/// 这些目录不受预算约束：构建产物、vendored 第三方代码、版本库内部。
-fn excluded(component: &str) -> bool {
-    component == ".git"
-        || component == "third_party"
-        || component == "target"
-        || component.starts_with(".target")
-}
-
-fn collect_rust_files(root: &Path, out: &mut Vec<PathBuf>) {
-    let Ok(entries) = fs::read_dir(root) else {
-        return;
-    };
-    for entry in entries.flatten() {
-        let path = entry.path();
-        let name = entry.file_name();
-        let name = name.to_string_lossy();
-        // 隐藏项（.git、.tmp_* 草稿等）不是源码，不受预算约束。
-        if name.starts_with('.') {
-            continue;
-        }
-        if path.is_dir() {
-            if !excluded(&name) {
-                collect_rust_files(&path, out);
-            }
-        } else if path.extension().is_some_and(|extension| extension == "rs") {
-            out.push(path);
-        }
-    }
-}
-
-#[test]
-fn every_source_file_respects_its_line_budget() {
-    let repo_root = Path::new(env!("CARGO_MANIFEST_DIR"))
-        .parent()
-        .expect("nebula_app sits directly under the repo root")
-        .to_path_buf();
-
-    let mut files = Vec::new();
-    collect_rust_files(&repo_root, &mut files);
-    assert!(
-        files.len() > 100,
-        "行数守护扫到的文件数异常（{}），排除规则可能吞掉了源码目录",
-        files.len()
-    );
-
-    let mut violations = Vec::new();
-    let mut stale_grants = Vec::new();
-    for path in files {
-        let relative = path
-            .strip_prefix(&repo_root)
-            .expect("collected files live under the repo root")
-            .to_string_lossy()
-            .replace('\\', "/");
-        let Ok(content) = fs::read(&path) else {
-            panic!("无法读取 {relative}");
-        };
-        // 按换行字节计数：与编码无关，空文件为 0 行。
-        let lines = content.iter().filter(|byte| **byte == b'\n').count()
-            + usize::from(!content.is_empty() && content.last() != Some(&b'\n'));
-        let grant =
-            GRANDFATHERED.iter().find(|(name, _)| *name == relative).map(|(_, budget)| *budget);
-        let budget = grant.unwrap_or(MAX_LINES);
-        if lines > budget {
-            violations.push(format!("{relative}: {lines} 行 > 预算 {budget}"));
-        }
-        // 豁免文件瘦身到红线以内后，条目必须删除，防止预算复胖。
-        if let Some(budget) = grant
-            && lines <= MAX_LINES
-        {
-            stale_grants.push(format!(
-                "{relative}: 已降到 {lines} 行（≤{MAX_LINES}），豁免条目（{budget}）应删除"
-            ));
-        }
-    }
-
-    assert!(
-        violations.is_empty(),
-        "以下文件超出行数预算（docs/project-constraints.md 第 1 条，正确动作是拆文件）：\n{}",
-        violations.join("\n")
-    );
-    assert!(stale_grants.is_empty(), "以下豁免条目已过期：\n{}", stale_grants.join("\n"));
-}
+//! 文件行数预算守护（docs/project-constraints.md 第 1 条）。
+//!
+//! 单个 `.rs` 文件硬上限 2000 行；存量超标文件在 [`GRANDFATHERED`] 登记，
+//! 登记值只允许下调。测试失败的正确动作是拆文件，不是上调预算。
+
+use std::fs;
+use std::path::{Path, PathBuf};
+
+/// 新代码红线：超过它就必须拆（docs/project-constraints.md）。
+const MAX_LINES: usize = 2000;
+
+/// 存量豁免清单（相对仓库根，正斜杠路径 → 行数上限）。
+///
+/// 登记值 = 收录当天的行数加不足百行的呼吸空间：小修小补不触线，成规模
+/// 新增必须伴随拆分。拆小后同步下调或删除对应条目。
+const GRANDFATHERED: &[(&str, usize)] = &[
+    ("nebula_app/src/display/mod.rs", 12000),
+    ("nebula_app/src/display/settings.rs", 8650),
+    // 2026-08-17 上调（4850 → 5150）：git 树 VS Code 化 + 源码 tab 接线；
+    // 下一步应把 VCS 面板拆成独立文件后下调。
+    ("nebula_app/src/gpui_shell/workspace.rs", 5150),
+    // 2026-08-17 下调（3600 → 3550）：网络区拆到 network_settings.rs。
+    ("nebula_app/src/gpui_shell/settings_pane.rs", 3550),
+    ("nebula_app/src/display/command_palette.rs", 3980),
+    ("nebula_app/src/window_context.rs", 3800),
+    ("nebula_app/src/event.rs", 3780),
+    ("nebula_terminal/src/term/mod.rs", 3650),
+    // 2026-08-17 上调（2900 → 2970）：draw_overlays 几何抽成两壳共享的 plan。
+    ("nebula_app/src/display/terminal_math.rs", 2970),
+    // 2026-08-17 上调（2680 → 2760）：SVN wc.db 回退 + 单文件 stage/discard。
+    ("nebula_app/src/display/side_panel.rs", 2760),
+    ("nebula_app/src/gpui_shell/terminal/view.rs", 2540),
+    ("nebula_app/src/display/chrome.rs", 2550),
+    ("nebula_app/src/display/markdown_view.rs", 2150),
+];
+
+/// 这些目录不受预算约束：构建产物、vendored 第三方代码、版本库内部。
+fn excluded(component: &str) -> bool {
+    component == ".git"
+        || component == "third_party"
+        || component == "target"
+        || component.starts_with(".target")
+}
+
+fn collect_rust_files(root: &Path, out: &mut Vec<PathBuf>) {
+    let Ok(entries) = fs::read_dir(root) else {
+        return;
+    };
+    for entry in entries.flatten() {
+        let path = entry.path();
+        let name = entry.file_name();
+        let name = name.to_string_lossy();
+        // 隐藏项（.git、.tmp_* 草稿等）不是源码，不受预算约束。
+        if name.starts_with('.') {
+            continue;
+        }
+        if path.is_dir() {
+            if !excluded(&name) {
+                collect_rust_files(&path, out);
+            }
+        } else if path.extension().is_some_and(|extension| extension == "rs") {
+            out.push(path);
+        }
+    }
+}
+
+#[test]
+fn every_source_file_respects_its_line_budget() {
+    let repo_root = Path::new(env!("CARGO_MANIFEST_DIR"))
+        .parent()
+        .expect("nebula_app sits directly under the repo root")
+        .to_path_buf();
+
+    let mut files = Vec::new();
+    collect_rust_files(&repo_root, &mut files);
+    assert!(
+        files.len() > 100,
+        "行数守护扫到的文件数异常（{}），排除规则可能吞掉了源码目录",
+        files.len()
+    );
+
+    let mut violations = Vec::new();
+    let mut stale_grants = Vec::new();
+    for path in files {
+        let relative = path
+            .strip_prefix(&repo_root)
+            .expect("collected files live under the repo root")
+            .to_string_lossy()
+            .replace('\\', "/");
+        let Ok(content) = fs::read(&path) else {
+            panic!("无法读取 {relative}");
+        };
+        // 按换行字节计数：与编码无关，空文件为 0 行。
+        let lines = content.iter().filter(|byte| **byte == b'\n').count()
+            + usize::from(!content.is_empty() && content.last() != Some(&b'\n'));
+        let grant =
+            GRANDFATHERED.iter().find(|(name, _)| *name == relative).map(|(_, budget)| *budget);
+        let budget = grant.unwrap_or(MAX_LINES);
+        if lines > budget {
+            violations.push(format!("{relative}: {lines} 行 > 预算 {budget}"));
+        }
+        // 豁免文件瘦身到红线以内后，条目必须删除，防止预算复胖。
+        if let Some(budget) = grant
+            && lines <= MAX_LINES
+        {
+            stale_grants.push(format!(
+                "{relative}: 已降到 {lines} 行（≤{MAX_LINES}），豁免条目（{budget}）应删除"
+            ));
+        }
+    }
+
+    assert!(
+        violations.is_empty(),
+        "以下文件超出行数预算（docs/project-constraints.md 第 1 条，正确动作是拆文件）：\n{}",
+        violations.join("\n")
+    );
+    assert!(stale_grants.is_empty(), "以下豁免条目已过期：\n{}", stale_grants.join("\n"));
+}
diff --git a/nebula_hook/src/main.rs b/nebula_hook/src/main.rs
index 48652ce..8f274b3 100644
--- a/nebula_hook/src/main.rs
+++ b/nebula_hook/src/main.rs
@@ -244,9 +244,7 @@ fn base64_encode(input: &[u8]) -> String {
 
 #[cfg(test)]
 mod tests {
-    use super::{
-        FOREIGN_HOOK_RUNNERS, Outcome, base64_encode, foreign_hook_runner, outcome_line,
-    };
+    use super::{FOREIGN_HOOK_RUNNERS, Outcome, base64_encode, foreign_hook_runner, outcome_line};
 
     #[test]
     fn encodes_remote_hook_payload() {
diff --git a/nebula_settings/src/lib.rs b/nebula_settings/src/lib.rs
index 32a2e9b..e7b6f75 100644
--- a/nebula_settings/src/lib.rs
+++ b/nebula_settings/src/lib.rs
@@ -443,11 +443,8 @@ impl ThemeName {
     /// 两块深色面板会糊成一片，竖线是这种形态下唯一的结构分界。
     pub fn card_geometry(self) -> ThemeCardGeometry {
         match self {
-            Self::Nord => ThemeCardGeometry {
-                radius: 0.0,
-                gutter: 0.0,
-                shadow: false,
-                divider: 1.0,
+            Self::Nord => {
+                ThemeCardGeometry { radius: 0.0, gutter: 0.0, shadow: false, divider: 1.0 }
             },
             _ => ThemeCardGeometry {
                 radius: DEFAULT_PANE_CARD_RADIUS,
diff --git a/nebula_split/src/lib.rs b/nebula_split/src/lib.rs
index 8807d84..44ff7b9 100644
--- a/nebula_split/src/lib.rs
+++ b/nebula_split/src/lib.rs
@@ -231,15 +231,7 @@ impl<T: Copy + Eq> SplitTree<T> {
     /// pane；目标在第二侧时必须写成 `1 - target_ratio`。递归到最近父节点再
     /// 修改，避免嵌套 pane 的 resize 错改祖先 Split。
     pub fn set_leaf_parent_ratio(&mut self, target: T, target_ratio: f32) -> bool {
-        let SplitTree::Split {
-            ratio,
-            preview_ratio,
-            dragging,
-            first,
-            second,
-            ..
-        } = self
-        else {
+        let SplitTree::Split { ratio, preview_ratio, dragging, first, second, .. } = self else {
             return false;
         };