Chore: Refactor Rust-Backend Modularity

src-tauri/src/commands/backup.rs

@@ -0,0 +1,75 @@
+use std::path::PathBuf;
+use tauri::Manager;
+
+fn backup_dir(app: &tauri::AppHandle) -> PathBuf {
+    app.path().app_data_dir()
+        .unwrap_or_else(|_| PathBuf::from("."))
+        .join("backups")
+}
+
+fn unix_now() -> u64 {
+    std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_secs()
+}
+
+#[tauri::command]
+pub async fn export_app_data(app: tauri::AppHandle, json: String) -> Result<String, String> {
+    use tauri_plugin_dialog::DialogExt;
+
+    let filename = format!("moku-backup-{}.json", unix_now());
+
+    let path = app.dialog()
+        .file()
+        .set_title("Save Moku app data backup")
+        .set_file_name(&filename)
+        .blocking_save_file()
+        .ok_or("Cancelled")?;
+
+    let dest = PathBuf::from(path.to_string());
+    std::fs::write(&dest, json.as_bytes()).map_err(|e| e.to_string())?;
+
+    Ok(dest.to_string_lossy().into_owned())
+}
+
+#[tauri::command]
+pub async fn import_app_data(app: tauri::AppHandle) -> Result<String, String> {
+    use tauri_plugin_dialog::DialogExt;
+
+    let path = app.dialog()
+        .file()
+        .set_title("Open Moku app data backup")
+        .blocking_pick_file()
+        .ok_or("Cancelled")?;
+
+    std::fs::read_to_string(PathBuf::from(path.to_string())).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub fn auto_backup_app_data(app: tauri::AppHandle, json: String) -> Result<(), String> {
+    let dir = backup_dir(&app);
+    std::fs::create_dir_all(&dir).map_err(|e| e.to_string())?;
+
+    let dest = dir.join(format!("auto-moku-backup-{}.json", unix_now()));
+    std::fs::write(&dest, json.as_bytes()).map_err(|e| e.to_string())?;
+
+    let mut entries: Vec<_> = std::fs::read_dir(&dir)
+        .map_err(|e| e.to_string())?
+        .filter_map(|e| e.ok())
+        .filter(|e| e.file_name().to_string_lossy().starts_with("auto-moku-backup-"))
+        .collect();
+
+    entries.sort_by_key(|e| e.file_name());
+
+    for old in entries.iter().take(entries.len().saturating_sub(5)) {
+        let _ = std::fs::remove_file(old.path());
+    }
+
+    Ok(())
+}
+
+#[tauri::command]
+pub fn get_auto_backup_dir(app: tauri::AppHandle) -> String {
+    backup_dir(&app).to_string_lossy().into_owned()
+}

src-tauri/src/commands/mod.rs

@@ -0,0 +1,5 @@
+pub mod backup;
+pub mod server;
+pub mod storage;
+pub mod system;
+pub mod updater;

src-tauri/src/commands/server.rs

@@ -0,0 +1,63 @@
+use tauri::Manager;
+use crate::server::{self, resolve::suwayomi_data_dir, SpawnError};
+use crate::ServerState;
+
+#[tauri::command]
+pub fn spawn_server(binary: String, app: tauri::AppHandle) -> Result<(), SpawnError> {
+    {
+        let state = app.state::<ServerState>();
+        if state.0.lock().unwrap().is_some() {
+            return Ok(());
+        }
+    }
+
+    let data_dir = suwayomi_data_dir();
+    let log_path = data_dir.join("moku-spawn.log");
+    let _ = std::fs::create_dir_all(&data_dir);
+    let mut log = std::fs::OpenOptions::new().create(true).append(true).open(&log_path).ok();
+
+    server::do_log(&mut log, &format!("[spawn_server] binary={:?} data_dir={:?}", binary, data_dir));
+
+    server::conf::seed_server_conf(&data_dir);
+
+    let mut invocation = server::resolve::resolve_server_binary(&binary, &app, &mut log).map_err(|e| {
+        server::do_log(&mut log, &format!("[spawn_server] resolve failed: {:?}", e));
+        e
+    })?;
+
+    if invocation.bin.ends_with("java") || invocation.bin.ends_with("java.exe") {
+        let rootdir_flag = format!(
+            "-Dsuwayomi.tachidesk.config.server.rootDir={}",
+            data_dir.to_string_lossy()
+        );
+        invocation.args.insert(0, rootdir_flag);
+    }
+
+    let working_dir = invocation.working_dir.unwrap_or_else(|| std::env::current_dir().unwrap_or_default());
+
+    server::do_log(&mut log, &format!("[spawn_server] bin={:?} args={:?} cwd={:?}", invocation.bin, invocation.args, working_dir));
+
+    use tauri_plugin_shell::ShellExt;
+    let cmd = app.shell()
+        .command(&invocation.bin)
+        .env("JAVA_TOOL_OPTIONS", "-Djava.awt.headless=true")
+        .args(&invocation.args)
+        .current_dir(&working_dir);
+
+    match cmd.spawn() {
+        Ok((_rx, child)) => {
+            *app.state::<ServerState>().0.lock().unwrap() = Some(child);
+            Ok(())
+        }
+        Err(e) => {
+            server::do_log(&mut log, &format!("[spawn_server] spawn failed: {}", e));
+            Err(SpawnError::SpawnFailed(e.to_string()))
+        }
+    }
+}
+
+#[tauri::command]
+pub fn kill_server(app: tauri::AppHandle) -> Result<(), String> {
+    server::kill_tachidesk(&app);
+    Ok(())
+}

src-tauri/src/commands/storage.rs

@@ -0,0 +1,117 @@
+use std::path::PathBuf;
+use serde::Serialize;
+use sysinfo::Disks;
+use tauri::Emitter;
+use walkdir::WalkDir;
+
+use crate::server::resolve::suwayomi_data_dir;
+
+#[derive(Serialize)]
+pub struct StorageInfo {
+    pub manga_bytes: u64,
+    pub total_bytes: u64,
+    pub free_bytes:  u64,
+    pub path:        String,
+}
+
+fn resolve_downloads_path(downloads_path: &str) -> PathBuf {
+    if !downloads_path.trim().is_empty() {
+        return PathBuf::from(downloads_path.trim());
+    }
+    suwayomi_data_dir().join("downloads")
+}
+
+#[tauri::command]
+pub fn get_storage_info(downloads_path: String) -> Result<StorageInfo, String> {
+    let path = resolve_downloads_path(&downloads_path);
+
+    let manga_bytes = if path.exists() {
+        WalkDir::new(&path)
+            .into_iter()
+            .filter_map(|e| e.ok())
+            .filter_map(|e| e.metadata().ok())
+            .filter(|m| m.is_file())
+            .map(|m| m.len())
+            .sum()
+    } else {
+        0
+    };
+
+    let stat_path = if path.exists() {
+        path.clone()
+    } else {
+        dirs::home_dir().unwrap_or_else(|| PathBuf::from("/"))
+    };
+
+    let disks = Disks::new_with_refreshed_list();
+    let disk = disks
+        .iter()
+        .filter(|d| stat_path.starts_with(d.mount_point()))
+        .max_by_key(|d| d.mount_point().as_os_str().len())
+        .ok_or_else(|| "Could not find disk for path".to_string())?;
+
+    Ok(StorageInfo {
+        manga_bytes,
+        total_bytes: disk.total_space(),
+        free_bytes:  disk.available_space(),
+        path:        path.to_string_lossy().into_owned(),
+    })
+}
+
+#[tauri::command]
+pub fn get_default_downloads_path() -> String {
+    resolve_downloads_path("").to_string_lossy().into_owned()
+}
+
+#[tauri::command]
+pub fn check_path_exists(path: String) -> bool {
+    std::path::Path::new(path.trim()).is_dir()
+}
+
+#[tauri::command]
+pub fn create_directory(path: String) -> Result<(), String> {
+    std::fs::create_dir_all(path.trim()).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub async fn migrate_downloads(app: tauri::AppHandle, src: String, dst: String) -> Result<(), String> {
+    use std::fs;
+
+    let src_path = PathBuf::from(src.trim());
+    let dst_path = PathBuf::from(dst.trim());
+
+    if !src_path.is_dir() {
+        return Ok(());
+    }
+
+    let total: u64 = WalkDir::new(&src_path)
+        .into_iter()
+        .filter_map(|e| e.ok())
+        .filter(|e| e.file_type().is_file())
+        .count() as u64;
+
+    let _ = app.emit("migrate_progress", serde_json::json!({ "done": 0u64, "total": total, "current": "" }));
+
+    let mut done: u64 = 0;
+
+    for entry in WalkDir::new(&src_path).into_iter().filter_map(|e| e.ok()) {
+        let rel    = entry.path().strip_prefix(&src_path).map_err(|e| e.to_string())?;
+        let target = dst_path.join(rel);
+
+        if entry.file_type().is_dir() {
+            fs::create_dir_all(&target).map_err(|e| e.to_string())?;
+        } else {
+            if let Some(parent) = target.parent() {
+                fs::create_dir_all(parent).map_err(|e| e.to_string())?;
+            }
+            fs::copy(entry.path(), &target).map_err(|e| e.to_string())?;
+            done += 1;
+            let _ = app.emit("migrate_progress", serde_json::json!({
+                "done": done, "total": total, "current": rel.to_string_lossy()
+            }));
+        }
+    }
+
+    fs::remove_dir_all(&src_path).map_err(|e| e.to_string())?;
+    Ok(())
+}

src-tauri/src/commands/system.rs

@@ -0,0 +1,52 @@
+use tauri::Manager;
+#[cfg(target_os = "windows")]
+use crate::server::resolve::strip_unc;
+
+#[tauri::command]
+pub fn get_platform_ui_scale(window: tauri::Window) -> f64 {
+    window.scale_factor().unwrap_or(1.0)
+}
+
+#[tauri::command]
+pub fn restart_app(app: tauri::AppHandle) {
+    tauri::process::restart(&app.env());
+}
+
+#[tauri::command]
+pub fn open_path(path: String) -> Result<(), String> {
+    #[cfg(target_os = "windows")]
+    {
+        let p = strip_unc(PathBuf::from(path.trim()));
+        std::process::Command::new("explorer")
+            .arg(p)
+            .spawn()
+            .map_err(|e| e.to_string())?;
+    }
+    #[cfg(target_os = "macos")]
+    {
+        let p = std::path::Path::new(path.trim());
+        std::process::Command::new("open")
+            .arg(p)
+            .spawn()
+            .map_err(|e| e.to_string())?;
+    }
+    #[cfg(not(any(target_os = "windows", target_os = "macos")))]
+    {
+        let p = std::path::Path::new(path.trim());
+        std::process::Command::new("xdg-open")
+            .arg(p)
+            .spawn()
+            .map_err(|e| e.to_string())?;
+    }
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn pick_downloads_folder(app: tauri::AppHandle) -> Option<String> {
+    use tauri_plugin_dialog::DialogExt;
+    app.dialog()
+        .file()
+        .set_title("Choose Downloads Folder")
+        .blocking_pick_folder()
+        .map(|p| p.to_string())
+}

src-tauri/src/commands/updater.rs

@@ -0,0 +1,126 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Clone)]
+pub struct ReleaseInfo {
+    pub tag_name:     String,
+    pub name:         String,
+    pub body:         String,
+    pub published_at: String,
+    pub html_url:     String,
+}
+
+#[derive(Clone, Serialize)]
+#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
+struct UpdateProgress {
+    downloaded: u64,
+    total:      Option<u64>,
+}
+
+#[tauri::command]
+pub async fn list_releases() -> Result<Vec<ReleaseInfo>, String> {
+    use tauri_plugin_http::reqwest;
+
+    #[derive(Deserialize)]
+    struct GhRelease {
+        tag_name:     String,
+        name:         Option<String>,
+        body:         Option<String>,
+        published_at: Option<String>,
+        html_url:     String,
+    }
+
+    let client = reqwest::Client::builder()
+        .user_agent("Moku")
+        .build()
+        .map_err(|e| e.to_string())?;
+
+    let resp = client
+        .get("https://api.github.com/repos/moku-project/Moku/releases?per_page=30")
+        .send()
+        .await
+        .map_err(|e| e.to_string())?;
+
+    if !resp.status().is_success() {
+        return Err(format!("GitHub API returned {}", resp.status()));
+    }
+
+    let releases: Vec<GhRelease> = serde_json::from_str(
+        &resp.text().await.map_err(|e| e.to_string())?
+    ).map_err(|e| e.to_string())?;
+
+    Ok(releases.into_iter().map(|r| ReleaseInfo {
+        tag_name:     r.tag_name.clone(),
+        name:         r.name.unwrap_or_else(|| r.tag_name.clone()),
+        body:         r.body.unwrap_or_default(),
+        published_at: r.published_at.unwrap_or_default(),
+        html_url:     r.html_url,
+    }).collect())
+}
+
+#[tauri::command]
+#[allow(unused_variables)]
+pub async fn download_and_install_update(app: tauri::AppHandle, tag: String) -> Result<(), String> {
+    #[cfg(not(target_os = "windows"))]
+    return Err("Native install is Windows-only; open the GitHub release page instead.".into());
+
+    #[cfg(target_os = "windows")]
+    {
+        use std::io::Write;
+        use tauri::Emitter;
+        use tauri_plugin_http::reqwest;
+
+        #[derive(Deserialize)]
+        struct Asset { name: String, browser_download_url: String, size: u64 }
+        #[derive(Deserialize)]
+        struct Release { assets: Vec<Asset> }
+
+        let client = reqwest::Client::builder()
+            .user_agent("Moku")
+            .build()
+            .map_err(|e| e.to_string())?;
+
+        let resp = client
+            .get(format!("https://api.github.com/repos/moku-project/Moku/releases/tags/{}", tag))
+            .send()
+            .await
+            .map_err(|e| e.to_string())?;
+
+        if !resp.status().is_success() {
+            return Err(format!("GitHub API returned {} for tag {}", resp.status(), tag));
+        }
+
+        let release: Release = serde_json::from_str(
+            &resp.text().await.map_err(|e| e.to_string())?
+        ).map_err(|e| e.to_string())?;
+
+        let asset = release.assets
+            .into_iter()
+            .find(|a| a.name.ends_with("_x64-setup.exe"))
+            .ok_or_else(|| format!("No x64-setup.exe asset found in release {}", tag))?;
+
+        let total = if asset.size > 0 { Some(asset.size) } else { None };
+        let mut resp = client.get(&asset.browser_download_url).send().await.map_err(|e| e.to_string())?;
+
+        let tmp_path = std::env::temp_dir().join(&asset.name);
+        let mut file = std::fs::File::create(&tmp_path).map_err(|e| e.to_string())?;
+        let mut downloaded: u64 = 0;
+
+        while let Some(chunk) = resp.chunk().await.map_err(|e| e.to_string())? {
+            file.write_all(&chunk).map_err(|e| e.to_string())?;
+            downloaded += chunk.len() as u64;
+            let _ = app.emit("update-progress", UpdateProgress { downloaded, total });
+        }
+        drop(file);
+
+        use std::os::windows::process::CommandExt;
+        const CREATE_NO_WINDOW: u32 = 0x08000000;
+        std::process::Command::new(&tmp_path)
+            .creation_flags(CREATE_NO_WINDOW)
+            .spawn()
+            .map_err(|e| e.to_string())?;
+
+        let _ = app.emit("update-launching", ());
+
+        Ok(())
+    }
+}

src-tauri/src/lib.rs

@@ -1,806 +1,11 @@
-use std::path::PathBuf;
+mod commands;
+mod server;
+
 use std::sync::Mutex;
-use std::io::Write;
-use sysinfo::Disks;
-use serde::Serialize;
 use tauri::{Manager, WindowEvent};
-#[cfg(target_os = "windows")]
-use tauri::Emitter;
-use tauri_plugin_shell::{ShellExt, process::CommandChild};
-use walkdir::WalkDir;
+use tauri_plugin_shell::process::CommandChild;
 
-struct ServerState(Mutex<Option<CommandChild>>);
-
-#[derive(Serialize)]
-pub struct StorageInfo {
-    manga_bytes: u64,
-    total_bytes: u64,
-    free_bytes:  u64,
-    path:        String,
-}
-
-#[derive(Serialize, Debug)]
-#[serde(tag = "kind", content = "message")]
-pub enum SpawnError {
-    NotConfigured(String),
-    SpawnFailed(String),
-}
-
-#[derive(Serialize, Clone)]
-pub struct ReleaseInfo {
-    pub tag_name:     String,
-    pub name:         String,
-    pub body:         String,
-    pub published_at: String,
-    pub html_url:     String,
-}
-
-#[derive(Clone, serde::Serialize)]
-#[cfg_attr(not(target_os = "windows"), allow(dead_code))]
-struct UpdateProgress {
-    downloaded: u64,
-    total:      Option<u64>,
-}
-
-fn strip_unc(path: PathBuf) -> PathBuf {
-    let s = path.to_string_lossy();
-    if let Some(stripped) = s.strip_prefix(r"\\?\") {
-        PathBuf::from(stripped)
-    } else {
-        path
-    }
-}
-
-fn resolve_downloads_path(downloads_path: &str) -> PathBuf {
-    if !downloads_path.trim().is_empty() {
-        return PathBuf::from(downloads_path.trim());
-    }
-    suwayomi_data_dir().join("downloads")
-}
-
-#[tauri::command]
-fn get_storage_info(downloads_path: String) -> Result<StorageInfo, String> {
-    let path = resolve_downloads_path(&downloads_path);
-
-    let manga_bytes = if path.exists() {
-        WalkDir::new(&path)
-            .into_iter()
-            .filter_map(|e| e.ok())
-            .filter_map(|e| e.metadata().ok())
-            .filter(|m| m.is_file())
-            .map(|m| m.len())
-            .sum()
-    } else {
-        0
-    };
-
-    let stat_path = if path.exists() {
-        path.clone()
-    } else {
-        dirs::home_dir().unwrap_or_else(|| PathBuf::from("/"))
-    };
-
-    let disks = Disks::new_with_refreshed_list();
-    let disk = disks
-        .iter()
-        .filter(|d| stat_path.starts_with(d.mount_point()))
-        .max_by_key(|d| d.mount_point().as_os_str().len())
-        .ok_or_else(|| "Could not find disk for path".to_string())?;
-
-    Ok(StorageInfo {
-        manga_bytes,
-        total_bytes: disk.total_space(),
-        free_bytes:  disk.available_space(),
-        path: path.to_string_lossy().into_owned(),
-    })
-}
-
-#[tauri::command]
-fn get_default_downloads_path() -> String {
-    resolve_downloads_path("").to_string_lossy().into_owned()
-}
-
-#[tauri::command]
-fn check_path_exists(path: String) -> bool {
-    std::path::Path::new(path.trim()).is_dir()
-}
-
-#[tauri::command]
-fn create_directory(path: String) -> Result<(), String> {
-    std::fs::create_dir_all(path.trim()).map_err(|e| e.to_string())
-}
-
-#[tauri::command]
-async fn migrate_downloads(app: tauri::AppHandle, src: String, dst: String) -> Result<(), String> {
-    use tauri::Emitter;
-    use std::fs;
-
-    let src_path = std::path::PathBuf::from(src.trim());
-    let dst_path = std::path::PathBuf::from(dst.trim());
-
-    if !src_path.is_dir() {
-        return Ok(());
-    }
-
-    let total: u64 = WalkDir::new(&src_path)
-        .into_iter()
-        .filter_map(|e| e.ok())
-        .filter(|e| e.file_type().is_file())
-        .count() as u64;
-
-    let _ = app.emit("migrate_progress", serde_json::json!({ "done": 0u64, "total": total, "current": "" }));
-
-    let mut done: u64 = 0;
-
-    for entry in WalkDir::new(&src_path).into_iter().filter_map(|e| e.ok()) {
-        let rel    = entry.path().strip_prefix(&src_path).map_err(|e| e.to_string())?;
-        let target = dst_path.join(rel);
-
-        if entry.file_type().is_dir() {
-            fs::create_dir_all(&target).map_err(|e| e.to_string())?;
-        } else {
-            if let Some(parent) = target.parent() {
-                fs::create_dir_all(parent).map_err(|e| e.to_string())?;
-            }
-            fs::copy(entry.path(), &target).map_err(|e| e.to_string())?;
-            done += 1;
-            let _ = app.emit("migrate_progress", serde_json::json!({
-                "done": done, "total": total, "current": rel.to_string_lossy()
-            }));
-        }
-    }
-
-    fs::remove_dir_all(&src_path).map_err(|e| e.to_string())?;
-    Ok(())
-}
-
-#[tauri::command]
-fn get_platform_ui_scale(window: tauri::Window) -> f64 {
-    window.scale_factor().unwrap_or(1.0)
-}
-
-fn kill_tachidesk(app: &tauri::AppHandle) {
-    let state = app.state::<ServerState>();
-    if let Some(child) = state.0.lock().unwrap().take() {
-        let _ = child.kill();
-    }
-
-    #[cfg(target_os = "windows")]
-    {
-        use std::os::windows::process::CommandExt;
-        const CREATE_NO_WINDOW: u32 = 0x08000000;
-
-        let _ = std::process::Command::new("taskkill")
-            .args(["/F", "/FI", "IMAGENAME eq java.exe"])
-            .creation_flags(CREATE_NO_WINDOW)
-            .status();
-
-        for _ in 0..30 {
-            let still_running = std::process::Command::new("tasklist")
-                .args(["/FI", "IMAGENAME eq java.exe", "/NH"])
-                .creation_flags(CREATE_NO_WINDOW)
-                .output()
-                .map(|o| String::from_utf8_lossy(&o.stdout).contains("java.exe"))
-                .unwrap_or(false);
-
-            if !still_running { break; }
-            std::thread::sleep(std::time::Duration::from_millis(100));
-        }
-    }
-
-    #[cfg(not(target_os = "windows"))]
-    let _ = std::process::Command::new("pkill").args(["-f", "tachidesk"]).status();
-}
-
-const DEFAULT_SERVER_CONF: &str = r#"server.ip = "127.0.0.1"
-server.port = 4567
-server.webUIEnabled = false
-server.initialOpenInBrowserEnabled = false
-server.systemTrayEnabled = false
-server.webUIInterface = "browser"
-server.webUIFlavor = "WebUI"
-server.webUIChannel = "stable"
-server.electronPath = ""
-server.debugLogsEnabled = false
-server.downloadAsCbz = true
-server.autoDownloadNewChapters = false
-server.globalUpdateInterval = 12
-server.maxSourcesInParallel = 6
-server.extensionRepos = []
-"#;
-
-fn seed_server_conf(data_dir: &PathBuf) {
-    let conf_path = data_dir.join("server.conf");
-
-    if !conf_path.exists() {
-        if let Err(e) = std::fs::create_dir_all(data_dir) {
-            eprintln!("Could not create Suwayomi data dir: {e}");
-            return;
-        }
-        if let Err(e) = std::fs::write(&conf_path, DEFAULT_SERVER_CONF) {
-            eprintln!("Could not write server.conf: {e}");
-        }
-        return;
-    }
-
-    let Ok(contents) = std::fs::read_to_string(&conf_path) else { return };
-
-    let patched = patch_conf_key(
-        patch_conf_key(
-            patch_conf_key(contents, "server.webUIEnabled", "false"),
-            "server.initialOpenInBrowserEnabled", "false",
-        ),
-        "server.systemTrayEnabled", "false",
-    );
-
-    let _ = std::fs::write(&conf_path, patched);
-}
-
-fn patch_conf_key(text: String, key: &str, value: &str) -> String {
-    let replacement = format!("{key} = {value}");
-    let lines: Vec<&str> = text.lines().collect();
-
-    if let Some(pos) = lines.iter().position(|l| l.trim_start().starts_with(key)) {
-        let mut out = lines
-            .iter()
-            .enumerate()
-            .map(|(i, l)| if i == pos { replacement.as_str() } else { l })
-            .collect::<Vec<_>>()
-            .join("\n");
-        out.push('\n');
-        return out;
-    }
-
-    let mut out = text;
-    if !out.ends_with('\n') { out.push('\n'); }
-    out.push_str(&replacement);
-    out.push('\n');
-    out
-}
-
-fn suwayomi_data_dir() -> PathBuf {
-    #[cfg(target_os = "windows")]
-    {
-        dirs::data_dir()
-            .unwrap_or_else(|| PathBuf::from("C:\\ProgramData"))
-            .join("moku\\tachidesk")
-    }
-    #[cfg(target_os = "macos")]
-    {
-        dirs::data_dir()
-            .unwrap_or_else(|| dirs::home_dir().unwrap_or_else(|| PathBuf::from("~")))
-            .join("io.github.moku_project.Moku.app/tachidesk")
-    }
-    #[cfg(not(any(target_os = "windows", target_os = "macos")))]
-    {
-        let base = std::env::var("XDG_DATA_HOME")
-            .map(PathBuf::from)
-            .unwrap_or_else(|_| dirs::data_dir().unwrap_or_else(|| PathBuf::from("/tmp")));
-        base.join("moku/tachidesk")
-    }
-}
-
-struct ServerInvocation {
-    bin:         String,
-    args:        Vec<String>,
-    working_dir: Option<PathBuf>,
-}
-
-#[cfg(not(target_os = "macos"))]
-fn find_java_in_bundle(bundle_dir: &PathBuf, log: &mut Option<std::fs::File>) -> Option<PathBuf> {
-    #[cfg(target_os = "windows")]
-    let java = strip_unc(bundle_dir.join("jre").join("bin").join("java.exe"));
-    #[cfg(not(target_os = "windows"))]
-    let java = bundle_dir.join("jre").join("bin").join("java");
-
-    do_log(log, &format!("[find_java] path: {:?} exists: {}", java, java.exists()));
-    if java.exists() { Some(java) } else { None }
-}
-
-fn do_log(log: &mut Option<std::fs::File>, msg: &str) {
-    eprintln!("{}", msg);
-    if let Some(f) = log {
-        let _ = writeln!(f, "{}", msg);
-    }
-}
-
-fn resolve_server_binary(
-    binary: &str,
-    app: &tauri::AppHandle,
-    log: &mut Option<std::fs::File>,
-) -> Result<ServerInvocation, SpawnError> {
-    do_log(log, &format!("[resolve] binary = {:?}", binary));
-
-    if !binary.trim().is_empty() {
-        let path = strip_unc(PathBuf::from(binary.trim()));
-        do_log(log, &format!("[resolve] user path: {:?} exists={}", path, path.exists()));
-        if path.exists() {
-            return Ok(ServerInvocation {
-                bin:         path.to_string_lossy().into_owned(),
-                args:        vec![],
-                working_dir: path.parent().map(|p| p.to_path_buf()),
-            });
-        }
-        do_log(log, "[resolve] user path not found, falling through");
-    }
-
-    if let Ok(exe) = std::env::current_exe() {
-        if let Some(bin_dir) = exe.parent() {
-            for name in &["tachidesk-server", "suwayomi-launcher"] {
-                let p = bin_dir.join(name);
-                do_log(log, &format!("[resolve] sibling: {:?} exists={}", p, p.exists()));
-                if p.exists() {
-                    return Ok(ServerInvocation {
-                        bin:         p.to_string_lossy().into_owned(),
-                        args:        vec![],
-                        working_dir: Some(bin_dir.to_path_buf()),
-                    });
-                }
-            }
-        }
-    }
-
-    #[cfg(not(target_os = "macos"))]
-    let resource_dir = {
-        let raw = app.path().resource_dir().unwrap_or_default();
-        let stripped = strip_unc(raw);
-        do_log(log, &format!("[resolve] resource_dir = {:?}", stripped));
-        stripped
-    };
-
-    #[cfg(not(target_os = "macos"))]
-    {
-        let bundle_dir = resource_dir.join("binaries").join("suwayomi-bundle");
-        let jar        = bundle_dir.join("bin").join("Suwayomi-Server.jar");
-
-        do_log(log, &format!("[resolve] bundle_dir={:?} exists={}", bundle_dir, bundle_dir.exists()));
-        do_log(log, &format!("[resolve] jar={:?} exists={}", jar, jar.exists()));
-
-        match find_java_in_bundle(&bundle_dir, log) {
-            Some(java) if jar.exists() => {
-                do_log(log, "[resolve] using bundled JRE");
-                return Ok(ServerInvocation {
-                    bin:  java.to_string_lossy().into_owned(),
-                    args: vec!["-jar".to_string(), jar.to_string_lossy().into_owned()],
-                    working_dir: Some(bundle_dir),
-                });
-            }
-            _ => do_log(log, "[resolve] bundled JRE/jar not found, falling through"),
-        }
-    }
-
-    #[cfg(not(target_os = "macos"))]
-    {
-        for name in &["suwayomi-launcher", "suwayomi-launcher.sh", "tachidesk-server"] {
-            let p = resource_dir.join(name);
-            do_log(log, &format!("[resolve] sidecar: {:?} exists={}", p, p.exists()));
-            if p.exists() {
-                return Ok(ServerInvocation {
-                    bin:         p.to_string_lossy().into_owned(),
-                    args:        vec![],
-                    working_dir: Some(resource_dir.clone()),
-                });
-            }
-        }
-
-        if let Some(java) = find_java_in_bundle(&resource_dir, log) {
-            let jar = std::fs::read_dir(&resource_dir)
-                .ok()
-                .and_then(|mut rd| {
-                    rd.find(|e| e.as_ref().map(|e| e.file_name().to_string_lossy().ends_with(".jar")).unwrap_or(false))
-                        .and_then(|e| e.ok())
-                        .map(|e| e.path())
-                });
-
-            if let Some(jar_path) = jar {
-                do_log(log, &format!("[resolve] generic JRE java={:?} jar={:?}", java, jar_path));
-                return Ok(ServerInvocation {
-                    bin:  java.to_string_lossy().into_owned(),
-                    args: vec!["-jar".to_string(), jar_path.to_string_lossy().into_owned()],
-                    working_dir: Some(resource_dir),
-                });
-            }
-        }
-    }
-
-    #[cfg(target_os = "macos")]
-    {
-        let resource_dir = app.path().resource_dir().unwrap_or_default();
-        let contents_dir = resource_dir
-            .parent()
-            .unwrap_or(&resource_dir)
-            .to_path_buf();
-
-        do_log(log, &format!("[resolve] macOS contents_dir = {:?}", contents_dir));
-
-        const NATIVE_NAMES: &[&str] = &[
-            "suwayomi-server-aarch64-apple-darwin",
-            "suwayomi-server-x86_64-apple-darwin",
-            "suwayomi-server",
-            "suwayomi-launcher",
-            "suwayomi-launcher.sh",
-            "tachidesk-server",
-        ];
-
-        let mut found_binary: Option<ServerInvocation> = None;
-        let mut found_java:   Option<(PathBuf, PathBuf)> = None;
-
-        'outer: for depth in 0u8..=8 {
-            let entries: Vec<PathBuf> = WalkDir::new(&contents_dir)
-                .min_depth(depth as usize)
-                .max_depth(depth as usize)
-                .into_iter()
-                .filter_map(|e| e.ok())
-                .filter(|e| e.file_type().is_dir())
-                .map(|e| e.into_path())
-                .collect();
-
-            for dir in &entries {
-                do_log(log, &format!("[resolve] scanning depth={} dir={:?}", depth, dir));
-
-                for name in NATIVE_NAMES {
-                    let p = dir.join(name);
-                    if p.exists() {
-                        do_log(log, &format!("[resolve] found native binary: {:?}", p));
-                        found_binary = Some(ServerInvocation {
-                            bin:         p.to_string_lossy().into_owned(),
-                            args:        vec![],
-                            working_dir: Some(dir.clone()),
-                        });
-                        break 'outer;
-                    }
-                }
-
-                if found_java.is_none() {
-                    let java_exe = dir.join("bin").join("java");
-                    if java_exe.exists() {
-                        do_log(log, &format!("[resolve] found java: {:?}", java_exe));
-                        let mut search = dir.as_path();
-                        'jar: for _ in 0..5 {
-                            if let Ok(rd) = std::fs::read_dir(search) {
-                                for entry in rd.filter_map(|e| e.ok()) {
-                                    if entry.file_name().to_string_lossy().ends_with(".jar") {
-                                        let jar = entry.path();
-                                        do_log(log, &format!("[resolve] found jar: {:?}", jar));
-                                        found_java = Some((java_exe.clone(), jar));
-                                        break 'jar;
-                                    }
-                                }
-                            }
-                            let bin_sibling = search.join("bin");
-                            if let Ok(rd) = std::fs::read_dir(&bin_sibling) {
-                                for entry in rd.filter_map(|e| e.ok()) {
-                                    if entry.file_name().to_string_lossy().ends_with(".jar") {
-                                        let jar = entry.path();
-                                        do_log(log, &format!("[resolve] found jar in bin/: {:?}", jar));
-                                        found_java = Some((java_exe.clone(), jar));
-                                        break 'jar;
-                                    }
-                                }
-                            }
-                            match search.parent() {
-                                Some(p) => search = p,
-                                None    => break,
-                            }
-                        }
-                    }
-                }
-            }
-        }
-
-        if let Some(inv) = found_binary {
-            return Ok(inv);
-        }
-
-        if let Some((java, jar)) = found_java {
-            let working_dir = jar.parent().map(|p| p.to_path_buf());
-            return Ok(ServerInvocation {
-                bin:  java.to_string_lossy().into_owned(),
-                args: vec!["-jar".to_string(), jar.to_string_lossy().into_owned()],
-                working_dir,
-            });
-        }
-
-        do_log(log, "[resolve] macOS scan found nothing in bundle");
-    }
-
-    for name in &["suwayomi-server", "tachidesk-server"] {
-        #[cfg(target_os = "windows")]
-        let found = std::process::Command::new("where").arg(name).output().map(|o| o.status.success()).unwrap_or(false);
-        #[cfg(not(target_os = "windows"))]
-        let found = std::process::Command::new("which").arg(name).output().map(|o| o.status.success()).unwrap_or(false);
-
-        if found {
-            return Ok(ServerInvocation { bin: name.to_string(), args: vec![], working_dir: None });
-        }
-    }
-
-    Err(SpawnError::NotConfigured(
-        "Server binary not found. Install Suwayomi-Server or set the path in Settings.".to_string(),
-    ))
-}
-
-#[tauri::command]
-fn spawn_server(binary: String, app: tauri::AppHandle) -> Result<(), SpawnError> {
-    {
-        let state = app.state::<ServerState>();
-        if state.0.lock().unwrap().is_some() {
-            return Ok(());
-        }
-    }
-
-    let data_dir = suwayomi_data_dir();
-    let log_path = data_dir.join("moku-spawn.log");
-    let _ = std::fs::create_dir_all(&data_dir);
-    let mut log = std::fs::OpenOptions::new().create(true).append(true).open(&log_path).ok();
-
-    do_log(&mut log, &format!("[spawn_server] binary={:?} data_dir={:?}", binary, data_dir));
-
-    seed_server_conf(&data_dir);
-
-    let mut invocation = resolve_server_binary(&binary, &app, &mut log).map_err(|e| {
-        do_log(&mut log, &format!("[spawn_server] resolve failed: {:?}", e));
-        e
-    })?;
-
-    if invocation.bin.ends_with("java") || invocation.bin.ends_with("java.exe") {
-        let rootdir_flag = format!(
-            "-Dsuwayomi.tachidesk.config.server.rootDir={}",
-            data_dir.to_string_lossy()
-        );
-        invocation.args.insert(0, rootdir_flag);
-    }
-
-    let working_dir = invocation.working_dir.unwrap_or_else(|| std::env::current_dir().unwrap_or_default());
-
-    do_log(&mut log, &format!("[spawn_server] bin={:?} args={:?} cwd={:?}", invocation.bin, invocation.args, working_dir));
-
-    let cmd = app.shell()
-        .command(&invocation.bin)
-        .env("JAVA_TOOL_OPTIONS", "-Djava.awt.headless=true")
-        .args(&invocation.args)
-        .current_dir(&working_dir);
-
-    match cmd.spawn() {
-        Ok((_rx, child)) => {
-            *app.state::<ServerState>().0.lock().unwrap() = Some(child);
-            Ok(())
-        }
-        Err(e) => {
-            do_log(&mut log, &format!("[spawn_server] spawn failed: {}", e));
-            Err(SpawnError::SpawnFailed(e.to_string()))
-        }
-    }
-}
-
-#[tauri::command]
-fn kill_server(app: tauri::AppHandle) -> Result<(), String> {
-    kill_tachidesk(&app);
-    Ok(())
-}
-
-#[tauri::command]
-async fn list_releases() -> Result<Vec<ReleaseInfo>, String> {
-    use tauri_plugin_http::reqwest;
-
-    let client = reqwest::Client::builder()
-        .user_agent("Moku")
-        .build()
-        .map_err(|e| e.to_string())?;
-
-    let resp = client
-        .get("https://api.github.com/repos/moku-project/Moku/releases?per_page=30")
-        .send()
-        .await
-        .map_err(|e| e.to_string())?;
-
-    if !resp.status().is_success() {
-        return Err(format!("GitHub API returned {}", resp.status()));
-    }
-
-    #[derive(serde::Deserialize)]
-    struct GhRelease {
-        tag_name:     String,
-        name:         Option<String>,
-        body:         Option<String>,
-        published_at: Option<String>,
-        html_url:     String,
-    }
-
-    let body = resp.text().await.map_err(|e| e.to_string())?;
-    let releases: Vec<GhRelease> = serde_json::from_str(&body).map_err(|e| e.to_string())?;
-
-    Ok(releases.into_iter().map(|r| ReleaseInfo {
-        tag_name:     r.tag_name.clone(),
-        name:         r.name.unwrap_or_else(|| r.tag_name.clone()),
-        body:         r.body.unwrap_or_default(),
-        published_at: r.published_at.unwrap_or_default(),
-        html_url:     r.html_url,
-    }).collect())
-}
-
-#[tauri::command]
-#[allow(unused_variables)]
-async fn download_and_install_update(app: tauri::AppHandle, tag: String) -> Result<(), String> {
-    #[cfg(not(target_os = "windows"))]
-    return Err("Native install is Windows-only; open the GitHub release page instead.".into());
-
-    #[cfg(target_os = "windows")]
-    {
-        use tauri_plugin_http::reqwest;
-        use std::io::Write;
-
-        let client = reqwest::Client::builder()
-            .user_agent("Moku")
-            .build()
-            .map_err(|e| e.to_string())?;
-
-        let url = format!("https://api.github.com/repos/moku-project/Moku/releases/tags/{}", tag);
-        let resp = client.get(&url).send().await.map_err(|e| e.to_string())?;
-        if !resp.status().is_success() {
-            return Err(format!("GitHub API returned {} for tag {}", resp.status(), tag));
-        }
-
-        #[derive(serde::Deserialize)]
-        struct Asset { name: String, browser_download_url: String, size: u64 }
-        #[derive(serde::Deserialize)]
-        struct Release { assets: Vec<Asset> }
-
-        let body = resp.text().await.map_err(|e| e.to_string())?;
-        let release: Release = serde_json::from_str(&body).map_err(|e| e.to_string())?;
-
-        let asset = release.assets
-            .into_iter()
-            .find(|a| a.name.ends_with("_x64-setup.exe"))
-            .ok_or_else(|| format!("No x64-setup.exe asset found in release {}", tag))?;
-
-        let total = if asset.size > 0 { Some(asset.size) } else { None };
-        let mut resp = client.get(&asset.browser_download_url).send().await.map_err(|e| e.to_string())?;
-
-        let tmp_path = std::env::temp_dir().join(&asset.name);
-        let mut file = std::fs::File::create(&tmp_path).map_err(|e| e.to_string())?;
-        let mut downloaded: u64 = 0;
-
-        while let Some(chunk) = resp.chunk().await.map_err(|e| e.to_string())? {
-            file.write_all(&chunk).map_err(|e| e.to_string())?;
-            downloaded += chunk.len() as u64;
-            let _ = app.emit("update-progress", UpdateProgress { downloaded, total });
-        }
-        drop(file);
-
-        use std::os::windows::process::CommandExt;
-        const CREATE_NO_WINDOW: u32 = 0x08000000;
-        std::process::Command::new(&tmp_path)
-            .creation_flags(CREATE_NO_WINDOW)
-            .spawn()
-            .map_err(|e| e.to_string())?;
-
-        let _ = app.emit("update-launching", ());
-
-        Ok(())
-    }
-}
-
-#[tauri::command]
-fn restart_app(app: tauri::AppHandle) {
-    tauri::process::restart(&app.env());
-}
-
-#[tauri::command]
-fn open_path(path: String) -> Result<(), String> {
-    #[cfg(target_os = "windows")]
-    {
-        let p = strip_unc(std::path::PathBuf::from(path.trim()));
-        std::process::Command::new("explorer")
-            .arg(p)
-            .spawn()
-            .map_err(|e| e.to_string())?;
-    }
-    #[cfg(target_os = "macos")]
-    {
-        let p = std::path::Path::new(path.trim());
-        std::process::Command::new("open")
-            .arg(p)
-            .spawn()
-            .map_err(|e| e.to_string())?;
-    }
-    #[cfg(not(any(target_os = "windows", target_os = "macos")))]
-    {
-        let p = std::path::Path::new(path.trim());
-        std::process::Command::new("xdg-open")
-            .arg(p)
-            .spawn()
-            .map_err(|e| e.to_string())?;
-    }
-    Ok(())
-}
-
-#[tauri::command]
-async fn pick_downloads_folder(app: tauri::AppHandle) -> Option<String> {
-    use tauri_plugin_dialog::DialogExt;
-    app.dialog()
-        .file()
-        .set_title("Choose Downloads Folder")
-        .blocking_pick_folder()
-        .map(|p| p.to_string())
-}
-
-fn moku_backup_dir(app: &tauri::AppHandle) -> PathBuf {
-    app.path().app_data_dir()
-        .unwrap_or_else(|_| PathBuf::from("."))
-        .join("backups")
-}
-
-#[tauri::command]
-async fn export_app_data(app: tauri::AppHandle, json: String) -> Result<String, String> {
-    use tauri_plugin_dialog::DialogExt;
-
-    let now = std::time::SystemTime::now()
-        .duration_since(std::time::UNIX_EPOCH)
-        .unwrap_or_default()
-        .as_secs();
-    let filename = format!("moku-backup-{}.json", now);
-
-    let path = app.dialog()
-        .file()
-        .set_title("Save Moku app data backup")
-        .set_file_name(&filename)
-        .blocking_save_file()
-        .ok_or("Cancelled")?;
-
-    let dest = PathBuf::from(path.to_string());
-    std::fs::write(&dest, json.as_bytes()).map_err(|e| e.to_string())?;
-
-    Ok(dest.to_string_lossy().into_owned())
-}
-
-#[tauri::command]
-async fn import_app_data(app: tauri::AppHandle) -> Result<String, String> {
-    use tauri_plugin_dialog::DialogExt;
-
-    let path = app.dialog()
-        .file()
-        .set_title("Open Moku app data backup")
-        .blocking_pick_file()
-        .ok_or("Cancelled")?;
-
-    let src = PathBuf::from(path.to_string());
-    let contents = std::fs::read_to_string(&src).map_err(|e| e.to_string())?;
-
-    Ok(contents)
-}
-
-#[tauri::command]
-fn auto_backup_app_data(app: tauri::AppHandle, json: String) -> Result<(), String> {
-    let backup_dir = moku_backup_dir(&app);
-    std::fs::create_dir_all(&backup_dir).map_err(|e| e.to_string())?;
-
-    let now = std::time::SystemTime::now()
-        .duration_since(std::time::UNIX_EPOCH)
-        .unwrap_or_default()
-        .as_secs();
-    let dest = backup_dir.join(format!("auto-moku-backup-{}.json", now));
-    std::fs::write(&dest, json.as_bytes()).map_err(|e| e.to_string())?;
-
-    let mut entries: Vec<_> = std::fs::read_dir(&backup_dir)
-        .map_err(|e| e.to_string())?
-        .filter_map(|e| e.ok())
-        .filter(|e| e.file_name().to_string_lossy().starts_with("auto-moku-backup-"))
-        .collect();
-
-    entries.sort_by_key(|e| e.file_name());
-
-    for old in entries.iter().take(entries.len().saturating_sub(5)) {
-        let _ = std::fs::remove_file(old.path());
-    }
-
-    Ok(())
-}
-
-#[tauri::command]
-fn get_auto_backup_dir(app: tauri::AppHandle) -> String {
-    moku_backup_dir(&app).to_string_lossy().into_owned()
-}
+pub struct ServerState(pub Mutex<Option<CommandChild>>);
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
@@ -813,28 +18,28 @@ pub fn run() {
         .plugin(tauri_plugin_process::init())
         .manage(ServerState(Mutex::new(None)))
         .invoke_handler(tauri::generate_handler![
-            get_storage_info,
-            get_default_downloads_path,
-            check_path_exists,
-            create_directory,
-            migrate_downloads,
-            spawn_server,
-            kill_server,
-            get_platform_ui_scale,
-            list_releases,
-            download_and_install_update,
-            restart_app,
-            open_path,
-            pick_downloads_folder,
-            export_app_data,
-            import_app_data,
-            auto_backup_app_data,
-            get_auto_backup_dir,
+            commands::storage::get_storage_info,
+            commands::storage::get_default_downloads_path,
+            commands::storage::check_path_exists,
+            commands::storage::create_directory,
+            commands::storage::migrate_downloads,
+            commands::server::spawn_server,
+            commands::server::kill_server,
+            commands::system::get_platform_ui_scale,
+            commands::system::restart_app,
+            commands::system::open_path,
+            commands::system::pick_downloads_folder,
+            commands::backup::export_app_data,
+            commands::backup::import_app_data,
+            commands::backup::auto_backup_app_data,
+            commands::backup::get_auto_backup_dir,
+            commands::updater::list_releases,
+            commands::updater::download_and_install_update,
         ])
         .setup(|_app| Ok(()))
         .on_window_event(|window, event| {
             if let WindowEvent::Destroyed = event {
-                kill_tachidesk(window.app_handle());
+                server::kill_tachidesk(window.app_handle());
             }
         })
         .run(tauri::generate_context!())

src-tauri/src/server/conf.rs

@@ -0,0 +1,67 @@
+use std::path::PathBuf;
+
+const DEFAULT_SERVER_CONF: &str = r#"server.ip = "127.0.0.1"
+server.port = 4567
+server.webUIEnabled = false
+server.initialOpenInBrowserEnabled = false
+server.systemTrayEnabled = false
+server.webUIInterface = "browser"
+server.webUIFlavor = "WebUI"
+server.webUIChannel = "stable"
+server.electronPath = ""
+server.debugLogsEnabled = false
+server.downloadAsCbz = true
+server.autoDownloadNewChapters = false
+server.globalUpdateInterval = 12
+server.maxSourcesInParallel = 6
+server.extensionRepos = []
+"#;
+
+pub fn seed_server_conf(data_dir: &PathBuf) {
+    let conf_path = data_dir.join("server.conf");
+
+    if !conf_path.exists() {
+        if let Err(e) = std::fs::create_dir_all(data_dir) {
+            eprintln!("Could not create Suwayomi data dir: {e}");
+            return;
+        }
+        if let Err(e) = std::fs::write(&conf_path, DEFAULT_SERVER_CONF) {
+            eprintln!("Could not write server.conf: {e}");
+        }
+        return;
+    }
+
+    let Ok(contents) = std::fs::read_to_string(&conf_path) else { return };
+
+    let patched = patch_conf_key(
+        patch_conf_key(
+            patch_conf_key(contents, "server.webUIEnabled", "false"),
+            "server.initialOpenInBrowserEnabled", "false",
+        ),
+        "server.systemTrayEnabled", "false",
+    );
+
+    let _ = std::fs::write(&conf_path, patched);
+}
+
+fn patch_conf_key(text: String, key: &str, value: &str) -> String {
+    let replacement = format!("{key} = {value}");
+    let lines: Vec<&str> = text.lines().collect();
+
+    if let Some(pos) = lines.iter().position(|l| l.trim_start().starts_with(key)) {
+        let mut out = lines
+            .iter()
+            .enumerate()
+            .map(|(i, l)| if i == pos { replacement.as_str() } else { l })
+            .collect::<Vec<_>>()
+            .join("\n");
+        out.push('\n');
+        return out;
+    }
+
+    let mut out = text;
+    if !out.ends_with('\n') { out.push('\n'); }
+    out.push_str(&replacement);
+    out.push('\n');
+    out
+}

src-tauri/src/server/mod.rs

@@ -0,0 +1,49 @@
+pub mod conf;
+pub mod resolve;
+
+use std::io::Write;
+use tauri::Manager;
+
+use crate::ServerState;
+
+pub use resolve::SpawnError;
+
+pub fn do_log(log: &mut Option<std::fs::File>, msg: &str) {
+    eprintln!("{}", msg);
+    if let Some(f) = log {
+        let _ = writeln!(f, "{}", msg);
+    }
+}
+
+pub fn kill_tachidesk(app: &tauri::AppHandle) {
+    let state = app.state::<ServerState>();
+    if let Some(child) = state.0.lock().unwrap().take() {
+        let _ = child.kill();
+    }
+
+    #[cfg(target_os = "windows")]
+    {
+        use std::os::windows::process::CommandExt;
+        const CREATE_NO_WINDOW: u32 = 0x08000000;
+
+        let _ = std::process::Command::new("taskkill")
+            .args(["/F", "/FI", "IMAGENAME eq java.exe"])
+            .creation_flags(CREATE_NO_WINDOW)
+            .status();
+
+        for _ in 0..30 {
+            let still_running = std::process::Command::new("tasklist")
+                .args(["/FI", "IMAGENAME eq java.exe", "/NH"])
+                .creation_flags(CREATE_NO_WINDOW)
+                .output()
+                .map(|o| String::from_utf8_lossy(&o.stdout).contains("java.exe"))
+                .unwrap_or(false);
+
+            if !still_running { break; }
+            std::thread::sleep(std::time::Duration::from_millis(100));
+        }
+    }
+
+    #[cfg(not(target_os = "windows"))]
+    let _ = std::process::Command::new("pkill").args(["-f", "tachidesk"]).status();
+}

src-tauri/src/server/resolve.rs

@@ -0,0 +1,269 @@
+use std::path::PathBuf;
+use serde::Serialize;
+use tauri::Manager;
+use crate::server::do_log;
+
+#[derive(Serialize, Debug)]
+#[serde(tag = "kind", content = "message")]
+pub enum SpawnError {
+    NotConfigured(String),
+    SpawnFailed(String),
+}
+
+pub struct ServerInvocation {
+    pub bin:         String,
+    pub args:        Vec<String>,
+    pub working_dir: Option<PathBuf>,
+}
+
+pub fn suwayomi_data_dir() -> PathBuf {
+    #[cfg(target_os = "windows")]
+    {
+        dirs::data_dir()
+            .unwrap_or_else(|| PathBuf::from("C:\\ProgramData"))
+            .join("moku\\tachidesk")
+    }
+    #[cfg(target_os = "macos")]
+    {
+        dirs::data_dir()
+            .unwrap_or_else(|| dirs::home_dir().unwrap_or_else(|| PathBuf::from("~")))
+            .join("io.github.moku_project.Moku.app/tachidesk")
+    }
+    #[cfg(not(any(target_os = "windows", target_os = "macos")))]
+    {
+        let base = std::env::var("XDG_DATA_HOME")
+            .map(PathBuf::from)
+            .unwrap_or_else(|_| dirs::data_dir().unwrap_or_else(|| PathBuf::from("/tmp")));
+        base.join("moku/tachidesk")
+    }
+}
+
+pub fn strip_unc(path: PathBuf) -> PathBuf {
+    let s = path.to_string_lossy();
+    if let Some(stripped) = s.strip_prefix(r"\\?\") {
+        PathBuf::from(stripped)
+    } else {
+        path
+    }
+}
+
+#[cfg(not(target_os = "macos"))]
+fn find_java_in_bundle(bundle_dir: &PathBuf, log: &mut Option<std::fs::File>) -> Option<PathBuf> {
+    #[cfg(target_os = "windows")]
+    let java = strip_unc(bundle_dir.join("jre").join("bin").join("java.exe"));
+    #[cfg(not(target_os = "windows"))]
+    let java = bundle_dir.join("jre").join("bin").join("java");
+
+    do_log(log, &format!("[find_java] path: {:?} exists: {}", java, java.exists()));
+    if java.exists() { Some(java) } else { None }
+}
+
+pub fn resolve_server_binary(
+    binary: &str,
+    app: &tauri::AppHandle,
+    log: &mut Option<std::fs::File>,
+) -> Result<ServerInvocation, SpawnError> {
+    do_log(log, &format!("[resolve] binary = {:?}", binary));
+
+    if !binary.trim().is_empty() {
+        let path = strip_unc(PathBuf::from(binary.trim()));
+        do_log(log, &format!("[resolve] user path: {:?} exists={}", path, path.exists()));
+        if path.exists() {
+            return Ok(ServerInvocation {
+                bin:         path.to_string_lossy().into_owned(),
+                args:        vec![],
+                working_dir: path.parent().map(|p| p.to_path_buf()),
+            });
+        }
+        do_log(log, "[resolve] user path not found, falling through");
+    }
+
+    if let Ok(exe) = std::env::current_exe() {
+        if let Some(bin_dir) = exe.parent() {
+            for name in &["tachidesk-server", "suwayomi-launcher"] {
+                let p = bin_dir.join(name);
+                do_log(log, &format!("[resolve] sibling: {:?} exists={}", p, p.exists()));
+                if p.exists() {
+                    return Ok(ServerInvocation {
+                        bin:         p.to_string_lossy().into_owned(),
+                        args:        vec![],
+                        working_dir: Some(bin_dir.to_path_buf()),
+                    });
+                }
+            }
+        }
+    }
+
+    #[cfg(not(target_os = "macos"))]
+    let resource_dir = {
+        let raw = app.path().resource_dir().unwrap_or_default();
+        let stripped = strip_unc(raw);
+        do_log(log, &format!("[resolve] resource_dir = {:?}", stripped));
+        stripped
+    };
+
+    #[cfg(not(target_os = "macos"))]
+    {
+        let bundle_dir = resource_dir.join("binaries").join("suwayomi-bundle");
+        let jar        = bundle_dir.join("bin").join("Suwayomi-Server.jar");
+
+        do_log(log, &format!("[resolve] bundle_dir={:?} exists={}", bundle_dir, bundle_dir.exists()));
+        do_log(log, &format!("[resolve] jar={:?} exists={}", jar, jar.exists()));
+
+        match find_java_in_bundle(&bundle_dir, log) {
+            Some(java) if jar.exists() => {
+                do_log(log, "[resolve] using bundled JRE");
+                return Ok(ServerInvocation {
+                    bin:  java.to_string_lossy().into_owned(),
+                    args: vec!["-jar".to_string(), jar.to_string_lossy().into_owned()],
+                    working_dir: Some(bundle_dir),
+                });
+            }
+            _ => do_log(log, "[resolve] bundled JRE/jar not found, falling through"),
+        }
+
+        for name in &["suwayomi-launcher", "suwayomi-launcher.sh", "tachidesk-server"] {
+            let p = resource_dir.join(name);
+            do_log(log, &format!("[resolve] sidecar: {:?} exists={}", p, p.exists()));
+            if p.exists() {
+                return Ok(ServerInvocation {
+                    bin:         p.to_string_lossy().into_owned(),
+                    args:        vec![],
+                    working_dir: Some(resource_dir.clone()),
+                });
+            }
+        }
+
+        if let Some(java) = find_java_in_bundle(&resource_dir, log) {
+            let jar = std::fs::read_dir(&resource_dir)
+                .ok()
+                .and_then(|mut rd| {
+                    rd.find(|e| e.as_ref().map(|e| e.file_name().to_string_lossy().ends_with(".jar")).unwrap_or(false))
+                        .and_then(|e| e.ok())
+                        .map(|e| e.path())
+                });
+
+            if let Some(jar_path) = jar {
+                do_log(log, &format!("[resolve] generic JRE java={:?} jar={:?}", java, jar_path));
+                return Ok(ServerInvocation {
+                    bin:  java.to_string_lossy().into_owned(),
+                    args: vec!["-jar".to_string(), jar_path.to_string_lossy().into_owned()],
+                    working_dir: Some(resource_dir),
+                });
+            }
+        }
+    }
+
+    #[cfg(target_os = "macos")]
+    {
+        let resource_dir = app.path().resource_dir().unwrap_or_default();
+        let contents_dir = resource_dir.parent().unwrap_or(&resource_dir).to_path_buf();
+
+        do_log(log, &format!("[resolve] macOS contents_dir = {:?}", contents_dir));
+
+        const NATIVE_NAMES: &[&str] = &[
+            "suwayomi-server-aarch64-apple-darwin",
+            "suwayomi-server-x86_64-apple-darwin",
+            "suwayomi-server",
+            "suwayomi-launcher",
+            "suwayomi-launcher.sh",
+            "tachidesk-server",
+        ];
+
+        let mut found_binary: Option<ServerInvocation> = None;
+        let mut found_java:   Option<(PathBuf, PathBuf)> = None;
+
+        'outer: for depth in 0u8..=8 {
+            let entries: Vec<PathBuf> = WalkDir::new(&contents_dir)
+                .min_depth(depth as usize)
+                .max_depth(depth as usize)
+                .into_iter()
+                .filter_map(|e| e.ok())
+                .filter(|e| e.file_type().is_dir())
+                .map(|e| e.into_path())
+                .collect();
+
+            for dir in &entries {
+                do_log(log, &format!("[resolve] scanning depth={} dir={:?}", depth, dir));
+
+                for name in NATIVE_NAMES {
+                    let p = dir.join(name);
+                    if p.exists() {
+                        do_log(log, &format!("[resolve] found native binary: {:?}", p));
+                        found_binary = Some(ServerInvocation {
+                            bin:         p.to_string_lossy().into_owned(),
+                            args:        vec![],
+                            working_dir: Some(dir.clone()),
+                        });
+                        break 'outer;
+                    }
+                }
+
+                if found_java.is_none() {
+                    let java_exe = dir.join("bin").join("java");
+                    if java_exe.exists() {
+                        do_log(log, &format!("[resolve] found java: {:?}", java_exe));
+                        let mut search = dir.as_path();
+                        'jar: for _ in 0..5 {
+                            if let Ok(rd) = std::fs::read_dir(search) {
+                                for entry in rd.filter_map(|e| e.ok()) {
+                                    if entry.file_name().to_string_lossy().ends_with(".jar") {
+                                        let jar = entry.path();
+                                        do_log(log, &format!("[resolve] found jar: {:?}", jar));
+                                        found_java = Some((java_exe.clone(), jar));
+                                        break 'jar;
+                                    }
+                                }
+                            }
+                            let bin_sibling = search.join("bin");
+                            if let Ok(rd) = std::fs::read_dir(&bin_sibling) {
+                                for entry in rd.filter_map(|e| e.ok()) {
+                                    if entry.file_name().to_string_lossy().ends_with(".jar") {
+                                        let jar = entry.path();
+                                        do_log(log, &format!("[resolve] found jar in bin/: {:?}", jar));
+                                        found_java = Some((java_exe.clone(), jar));
+                                        break 'jar;
+                                    }
+                                }
+                            }
+                            match search.parent() {
+                                Some(p) => search = p,
+                                None    => break,
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if let Some(inv) = found_binary {
+            return Ok(inv);
+        }
+
+        if let Some((java, jar)) = found_java {
+            let working_dir = jar.parent().map(|p| p.to_path_buf());
+            return Ok(ServerInvocation {
+                bin:  java.to_string_lossy().into_owned(),
+                args: vec!["-jar".to_string(), jar.to_string_lossy().into_owned()],
+                working_dir,
+            });
+        }
+
+        do_log(log, "[resolve] macOS scan found nothing in bundle");
+    }
+
+    for name in &["suwayomi-server", "tachidesk-server"] {
+        #[cfg(target_os = "windows")]
+        let found = std::process::Command::new("where").arg(name).output().map(|o| o.status.success()).unwrap_or(false);
+        #[cfg(not(target_os = "windows"))]
+        let found = std::process::Command::new("which").arg(name).output().map(|o| o.status.success()).unwrap_or(false);
+
+        if found {
+            return Ok(ServerInvocation { bin: name.to_string(), args: vec![], working_dir: None });
+        }
+    }
+
+    Err(SpawnError::NotConfigured(
+        "Server binary not found. Install Suwayomi-Server or set the path in Settings.".to_string(),
+    ))
+}