diff --git a/Cargo.lock b/Cargo.lock
index 547ad40..af39c95 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -859,6 +859,8 @@ dependencies = [
  "tauri-plugin-window-state",
  "tokio",
  "tracing",
+ "tracing-appender",
+ "tracing-subscriber",
  "tree-sitter",
  "tree-sitter-go",
  "tree-sitter-java",
@@ -4201,6 +4203,12 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "symlink"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7973cce6668464ea31f176d85b13c7ab3bba2cb3b77a2ed26abd7801688010a"
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -5039,6 +5047,19 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-appender"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "050686193eb999b4bb3bc2acfa891a13da00f79734704c4b8b4ef1a10b368a3c"
+dependencies = [
+ "crossbeam-channel",
+ "symlink",
+ "thiserror 2.0.18",
+ "time",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "tracing-attributes"
 version = "0.1.31"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 41a8260..ab64d71 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -22,6 +22,8 @@ serde_json.workspace = true
 tokio.workspace = true
 anyhow.workspace = true
 tracing.workspace = true
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+tracing-appender = "0.2"
 chrono.workspace = true
 # augmentation::MentionResolver async trait(Input Augmentation 层核心设计2)
 async-trait = { workspace = true }
diff --git a/src-tauri/src/commands/ai/agentic/mod.rs b/src-tauri/src/commands/ai/agentic/mod.rs
index 7d22766..e871028 100644
--- a/src-tauri/src/commands/ai/agentic/mod.rs
+++ b/src-tauri/src/commands/ai/agentic/mod.rs
@@ -816,6 +816,7 @@ pub(crate) async fn run_agentic_loop(
             tracing::info!(
                 conv_id = %conv_id,
                 count = goals.len(),
+                first_goal = %goals.first().map(|g| &g[..std::cmp::min(120, g.len())]).unwrap_or(""),
                 "[ai] G1 目标钉扎:已把 {} 个 pinned_goals 拼进 system_prompt",
                 goals.len()
             );
diff --git a/src-tauri/src/commands/ai/mod.rs b/src-tauri/src/commands/ai/mod.rs
index 3497da1..1ee4d0f 100644
--- a/src-tauri/src/commands/ai/mod.rs
+++ b/src-tauri/src/commands/ai/mod.rs
@@ -437,24 +437,6 @@ fn normalize_dir_key(dir: &str) -> String {
     }
 }
 
-/// workspace_root 字符串（作 run_command working_dir 缺省时的 trust key 回退）。
-///
-/// 与 tool_registry.rs workspace_root() 同源（CARGO_MANIFEST_DIR 上两级），canonicalize 后
-/// 保证与 run_command handler 默认 working_dir = workspace_root().to_string() 生成的 key 一致。
-fn workspace_root_str() -> String {
-    let root = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
-        .parent()
-        .and_then(|p| p.parent())
-        .map(PathBuf::from)
-        .unwrap_or_else(|| PathBuf::from("."));
-    root.canonicalize()
-        .map(|c| c.to_string_lossy().to_string())
-        .unwrap_or_else(|_| root.to_string_lossy().to_string())
-}
-
-// 引入 PathBuf 供 workspace_root_str / dir_of_path_normalized 使用
-use std::path::PathBuf;
-
 /// AI 会话内状态（Mutex 保护）
 ///
 /// F-260616-09 B 批4(决策 e 真并发上线):会话级状态全部迁入 [`per_conv`](Self::per_conv)
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 02d0006..24632cc 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -11,6 +11,27 @@ use df_tunnel::TunnelClient;
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
+    // 初始化文件日志:追加到 %TEMP%/devflow-trace.log,RUST_LOG 控制级别(默认 info)
+    let log_path = std::env::temp_dir().join("devflow-trace.log");
+    let log_file = std::fs::OpenOptions::new()
+        .create(true)
+        .append(true)
+        .open(&log_path)
+        .expect("创建日志文件失败");
+    let (non_blocking, _guard) = tracing_appender::non_blocking(log_file);
+    tracing_subscriber::fmt()
+        .with_env_filter(
+            tracing_subscriber::EnvFilter::try_from_default_env()
+                .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info"))
+        )
+        .with_writer(non_blocking)
+        .with_ansi(false)
+        .init();
+    tracing::info!(
+        path = %log_path.display(),
+        "[startup] 日志已初始化"
+    );
+
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
         .plugin(tauri_plugin_dialog::init())
diff --git a/src-tauri/src/state.rs b/src-tauri/src/state.rs
index f1f6f16..d725fd5 100644
--- a/src-tauri/src/state.rs
+++ b/src-tauri/src/state.rs
@@ -463,9 +463,9 @@ impl AllowedDirs {
     pub const SETTINGS_KEY: &'static str = "allowed_dirs";
 
     /// 空白名单(方案①弱化 workspace_root:不再编译期硬塞开发机 CARGO_MANIFEST_DIR)。
-    /// 分发后该路径指向编译机不存在的目录,硬塞反成脏白名单;用户首次访问任意目录
-    /// 走弹窗三档授权(once/session/always),对齐产品定位(不预设源码目录)。仅作 init
-    /// 占位(reload_allowed_dirs 从 KV 覆盖)+ 测试构造基线。
+    /// 分发后该路径指向编译机不存在的目录,硬塞反成脏白名单。
+    /// 当前仅测试使用,生产环境由 reload_allowed_dirs 覆盖。
+    #[cfg_attr(not(test), allow(dead_code))]
     pub fn default_with_root() -> Self {
         Self { persistent: HashSet::new(), session: HashSet::new(), once: HashSet::new() }
     }
@@ -668,14 +668,6 @@ fn workspace_root_path() -> PathBuf {
         .unwrap_or_else(|| PathBuf::from("."))
 }
 
-/// 应用数据目录(运行期确定,跨平台)。
-/// 不依赖编译期常量,打包分发后仍有效。
-/// 用于 DevFlow 自身数据存储(.trash / logs 等),非用户项目目录。
-/// 取 AppState.data_dir,不持 state 时回退 workspace_root_path()(开发期兼容)。
-pub fn data_dir_path(state: &AppState) -> &Path {
-    &state.data_dir
-}
-
 impl AppState {
     /// 初始化应用状态：打开（或创建）数据库并执行迁移，构建各 Repo 与节点注册表
     pub async fn init(db_path: &Path, data_dir: PathBuf) -> Result<Self> {