Unlucky Launcher v0.1.0

单提交快照：main 只保留已发布版本的代码树，开发史在 dev。

crates/app/src/conv/ui.rs

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+//! UI 偏好/路由枚举的双向映射（Slint 枚举 ↔ 状态层枚举）。
+
+use crate::dto::{self, VersionCategory};
+use crate::prefs;
+use crate::router;
+use crate::{BgFillKind, DownloadCategory, InstanceView, RouteKind, ThemeMode, TileSize};
+
+/// 路由 → 导航高亮/页面选择。
+pub fn route(route: &router::Route) -> RouteKind {
+    match route {
+        router::Route::Instances => RouteKind::Instances,
+        router::Route::Download => RouteKind::Download,
+        router::Route::Logs => RouteKind::Logs,
+        router::Route::Settings => RouteKind::Settings,
+        router::Route::Detail(_) => RouteKind::Detail,
+        router::Route::Agent => RouteKind::Agent,
+    }
+}
+
+/// Slint 侧导航点击 → 路由（详情页保持当前实例，不在导航里触发）。
+pub fn route_from(kind: RouteKind) -> Option<router::Route> {
+    match kind {
+        RouteKind::Instances => Some(router::Route::Instances),
+        RouteKind::Download => Some(router::Route::Download),
+        RouteKind::Logs => Some(router::Route::Logs),
+        RouteKind::Settings => Some(router::Route::Settings),
+        RouteKind::Agent => Some(router::Route::Agent),
+        RouteKind::Detail => None,
+    }
+}
+
+/// 磁贴尺寸。
+pub fn tile_size(size: prefs::TileSize) -> TileSize {
+    match size {
+        prefs::TileSize::Small => TileSize::Small,
+        prefs::TileSize::Medium => TileSize::Medium,
+        prefs::TileSize::Large => TileSize::Large,
+    }
+}
+
+/// 视图模式。
+pub fn instance_view(view: prefs::InstanceView) -> InstanceView {
+    match view {
+        prefs::InstanceView::Tiles => InstanceView::Tiles,
+        prefs::InstanceView::List => InstanceView::List,
+    }
+}
+
+/// 主题三态。
+pub fn theme_mode(mode: prefs::ThemeMode) -> ThemeMode {
+    match mode {
+        prefs::ThemeMode::Auto => ThemeMode::Auto,
+        prefs::ThemeMode::Light => ThemeMode::Light,
+        prefs::ThemeMode::Dark => ThemeMode::Dark,
+    }
+}
+
+/// Slint 主题三态 → 偏好枚举。
+pub fn theme_mode_from(mode: ThemeMode) -> prefs::ThemeMode {
+    match mode {
+        ThemeMode::Auto => prefs::ThemeMode::Auto,
+        ThemeMode::Light => prefs::ThemeMode::Light,
+        ThemeMode::Dark => prefs::ThemeMode::Dark,
+    }
+}
+
+/// Slint 磁贴尺寸 → 偏好枚举。
+pub fn tile_size_from(size: TileSize) -> prefs::TileSize {
+    match size {
+        TileSize::Small => prefs::TileSize::Small,
+        TileSize::Medium => prefs::TileSize::Medium,
+        TileSize::Large => prefs::TileSize::Large,
+    }
+}
+
+/// Slint 视图模式 → 偏好枚举。
+pub fn instance_view_from(view: InstanceView) -> prefs::InstanceView {
+    match view {
+        InstanceView::Tiles => prefs::InstanceView::Tiles,
+        InstanceView::List => prefs::InstanceView::List,
+    }
+}
+
+/// 下载分类 → core 侧分类枚举。
+pub fn version_category(category: DownloadCategory) -> VersionCategory {
+    match category {
+        DownloadCategory::Release => VersionCategory::Release,
+        DownloadCategory::Snapshot => VersionCategory::Snapshot,
+        DownloadCategory::AncientClassic => VersionCategory::Ancient(dto::AncientKind::Classic),
+        DownloadCategory::AncientAlpha => VersionCategory::Ancient(dto::AncientKind::OldAlpha),
+        DownloadCategory::AncientBeta => VersionCategory::Ancient(dto::AncientKind::OldBeta),
+        DownloadCategory::AncientUnlisted => VersionCategory::Ancient(dto::AncientKind::Unlisted),
+        DownloadCategory::Modpack => VersionCategory::Modpack,
+        DownloadCategory::Mod => VersionCategory::Mod,
+    }
+}
+
+/// 下载分类（偏好 → Slint）——供启动时回填。
+pub fn category_from(category: VersionCategory) -> DownloadCategory {
+    match category {
+        VersionCategory::Release => DownloadCategory::Release,
+        VersionCategory::Snapshot => DownloadCategory::Snapshot,
+        VersionCategory::Ancient(dto::AncientKind::Classic) => DownloadCategory::AncientClassic,
+        VersionCategory::Ancient(dto::AncientKind::OldAlpha) => DownloadCategory::AncientAlpha,
+        VersionCategory::Ancient(dto::AncientKind::OldBeta) => DownloadCategory::AncientBeta,
+        VersionCategory::Ancient(dto::AncientKind::Unlisted) => DownloadCategory::AncientUnlisted,
+        VersionCategory::Modpack => DownloadCategory::Modpack,
+        VersionCategory::Mod => DownloadCategory::Mod,
+    }
+}
+
+/// 背景图填充模式（core 侧枚举 → Slint）。
+pub fn bg_fill(fill: unlucky_core::setting::appearance::BgFill) -> BgFillKind {
+    match fill {
+        unlucky_core::setting::appearance::BgFill::Cover => BgFillKind::Cover,
+        unlucky_core::setting::appearance::BgFill::Contain => BgFillKind::Contain,
+        unlucky_core::setting::appearance::BgFill::Tile => BgFillKind::Tile,
+    }
+}
+
+/// Slint 填充模式 → core 侧枚举。
+pub fn bg_fill_from(fill: BgFillKind) -> unlucky_core::setting::appearance::BgFill {
+    match fill {
+        BgFillKind::Cover => unlucky_core::setting::appearance::BgFill::Cover,
+        BgFillKind::Contain => unlucky_core::setting::appearance::BgFill::Contain,
+        BgFillKind::Tile => unlucky_core::setting::appearance::BgFill::Tile,
+    }
+}
+
+/// 强调色十六进制串 → Slint 颜色；空串/非法值给透明（= 用出厂 accent）。
+pub fn accent_color(hex: &str) -> slint::Color {
+    match unlucky_core::setting::appearance::hex_to_rgb(hex) {
+        Some((r, g, b)) => slint::Color::from_rgb_u8(r, g, b),
+        None => slint::Color::from_argb_u8(0, 0, 0, 0),
+    }
+}