refactor(qbz-app): extract graphics autoconfig

cx

crates/qbz-app/src/graphics_autoconfig.rs

@@ -0,0 +1,442 @@
+//! Framework-agnostic graphics auto-configuration recommendation logic.
+//!
+//! This module detects the host graphics environment and computes the settings
+//! profile QBZ should recommend. Applying that profile is intentionally left to
+//! the shell adapter because it writes to persisted settings and currently
+//! targets the Tauri/WebKit startup path.
+
+use serde::Serialize;
+
+/// Detected environment information.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub struct Environment {
+    pub display_server: String,
+    pub gpu_nvidia: bool,
+    pub gpu_amd: bool,
+    pub gpu_intel: bool,
+    pub gpu_name: String,
+    pub desktop: String,
+    pub is_vm: bool,
+}
+
+/// Recommended configuration.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize)]
+#[serde(rename_all = "snake_case")]
+pub struct Recommendation {
+    pub hardware_acceleration: bool,
+    pub force_x11: bool,
+    pub gsk_renderer: Option<String>,
+    pub disable_dmabuf: bool,
+    pub disable_blur_background: bool,
+    pub rationale: Vec<String>,
+}
+
+pub fn detect_environment() -> Environment {
+    let display_server = detect_display_server();
+    let gpu_nvidia = is_nvidia_gpu();
+    let gpu_amd = is_amd_gpu();
+    let gpu_intel = is_intel_gpu();
+    let gpu_name = detect_gpu_name(gpu_nvidia, gpu_amd, gpu_intel);
+    let desktop = detect_desktop();
+    let is_vm = is_virtual_machine();
+
+    Environment {
+        display_server,
+        gpu_nvidia,
+        gpu_amd,
+        gpu_intel,
+        gpu_name,
+        desktop,
+        is_vm,
+    }
+}
+
+fn detect_display_server() -> String {
+    let is_wayland = std::env::var_os("WAYLAND_DISPLAY").is_some()
+        || std::env::var("XDG_SESSION_TYPE").as_deref() == Ok("wayland");
+
+    if is_wayland {
+        "Wayland".to_string()
+    } else {
+        "X11".to_string()
+    }
+}
+
+fn is_nvidia_gpu() -> bool {
+    std::path::Path::new("/proc/driver/nvidia/version").exists()
+        || std::fs::read_to_string("/proc/modules")
+            .map(|m| m.lines().any(|l| l.starts_with("nvidia")))
+            .unwrap_or(false)
+}
+
+fn is_amd_gpu() -> bool {
+    std::path::Path::new("/sys/module/amdgpu").exists()
+        || std::fs::read_to_string("/proc/modules")
+            .map(|m| m.lines().any(|l| l.starts_with("amdgpu")))
+            .unwrap_or(false)
+}
+
+fn is_intel_gpu() -> bool {
+    std::path::Path::new("/sys/module/i915").exists()
+        || std::fs::read_to_string("/proc/modules")
+            .map(|m| m.lines().any(|l| l.starts_with("i915")))
+            .unwrap_or(false)
+}
+
+fn is_virtual_machine() -> bool {
+    if let Ok(product) = std::fs::read_to_string("/sys/class/dmi/id/product_name") {
+        let p = product.trim().to_lowercase();
+        if p.contains("virtualbox")
+            || p.contains("vmware")
+            || p.contains("qemu")
+            || p.contains("bochs")
+            || p.contains("hyper-v")
+        {
+            return true;
+        }
+    }
+    if let Ok(vendor) = std::fs::read_to_string("/sys/class/dmi/id/sys_vendor") {
+        let v = vendor.trim().to_lowercase();
+        if v.contains("innotek")
+            || v.contains("vmware")
+            || v.contains("qemu")
+            || v.contains("xen")
+            || v.contains("parallels")
+        {
+            return true;
+        }
+    }
+    if let Ok(h) = std::fs::read_to_string("/sys/hypervisor/type") {
+        if !h.trim().is_empty() {
+            return true;
+        }
+    }
+    false
+}
+
+pub fn detect_gpu_name(nvidia: bool, amd: bool, intel: bool) -> String {
+    // Hybrid laptops have more than one of these set; join the names so
+    // diagnostics surface the full picture instead of returning only the
+    // first vendor matched.
+    let mut parts: Vec<String> = Vec::new();
+    if nvidia {
+        parts.push(nvidia_name());
+    }
+    if amd {
+        parts.push(amd_name());
+    }
+    if intel {
+        parts.push(intel_name());
+    }
+    if parts.is_empty() {
+        "Unknown / None detected".to_string()
+    } else {
+        parts.join(" + ")
+    }
+}
+
+fn nvidia_name() -> String {
+    if let Ok(version) = std::fs::read_to_string("/proc/driver/nvidia/version") {
+        if let Some(line) = version.lines().next() {
+            return format!("NVIDIA ({})", line.trim());
+        }
+    }
+    "NVIDIA (driver loaded)".to_string()
+}
+
+fn amd_name() -> String {
+    if let Ok(entries) = std::fs::read_dir("/sys/class/drm") {
+        for entry in entries.flatten() {
+            let name = entry.file_name().to_string_lossy().to_string();
+            if name.starts_with("card") && !name.contains('-') {
+                let model_path = entry.path().join("device/product_name");
+                if let Ok(model) = std::fs::read_to_string(&model_path) {
+                    let model = model.trim();
+                    if !model.is_empty() {
+                        return format!("AMD {}", model);
+                    }
+                }
+            }
+        }
+    }
+    "AMD (amdgpu driver loaded)".to_string()
+}
+
+fn intel_name() -> String {
+    "Intel (i915/xe driver loaded)".to_string()
+}
+
+fn detect_desktop() -> String {
+    let desktop = std::env::var("XDG_CURRENT_DESKTOP").unwrap_or_default();
+    let session = std::env::var("XDG_SESSION_DESKTOP").unwrap_or_default();
+    let de = std::env::var("DESKTOP_SESSION").unwrap_or_default();
+
+    if !desktop.is_empty() {
+        desktop
+    } else if !session.is_empty() {
+        session
+    } else if !de.is_empty() {
+        de
+    } else {
+        "Unknown".to_string()
+    }
+}
+
+pub fn compute_recommendation(env: &Environment) -> Recommendation {
+    let mut rationale = Vec::new();
+
+    // VM: software rendering, no blur
+    if env.is_vm {
+        rationale.push("Virtual machine detected: using software rendering".to_string());
+        return Recommendation {
+            hardware_acceleration: false,
+            force_x11: false,
+            gsk_renderer: Some("cairo".to_string()),
+            disable_dmabuf: true,
+            disable_blur_background: true,
+            rationale,
+        };
+    }
+
+    let is_wayland = env.display_server == "Wayland";
+    let desktop_lower = env.desktop.to_lowercase();
+    let is_gnome = desktop_lower.contains("gnome");
+    let has_hybrid_igpu = env.gpu_nvidia && (env.gpu_intel || env.gpu_amd);
+
+    // Hybrid laptops (NVIDIA dGPU + Intel/AMD iGPU). WebKit composes via
+    // the iGPU through EGL/GLX defaults - the NVIDIA card sits idle for
+    // PRIME render offload. Forcing GSK_RENDERER=gl here was hurting
+    // performance because the GL renderer biases toward the dGPU stack
+    // even when the iGPU is the actual paint target. Auto (None) lets
+    // GTK4 pick NGL/Vulkan as appropriate for the iGPU. DMA-BUF stays
+    // disabled - that one is fragile on any NVIDIA-touching setup.
+    if has_hybrid_igpu {
+        let igpu_label = if env.gpu_intel { "Intel" } else { "AMD" };
+        rationale.push(format!(
+            "NVIDIA + {} hybrid: iGPU handles WebKit compositing, leaving GSK at Auto",
+            igpu_label
+        ));
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: None,
+            disable_dmabuf: true,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // NVIDIA + Wayland + GNOME: known stutter combo
+    if env.gpu_nvidia && is_wayland && is_gnome {
+        rationale.push("NVIDIA + Wayland + GNOME: using GL renderer, DMA-BUF off".to_string());
+        rationale.push("This combination has known compositing issues".to_string());
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: Some("gl".to_string()),
+            disable_dmabuf: true,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // NVIDIA + Wayland (non-GNOME)
+    if env.gpu_nvidia && is_wayland {
+        rationale.push("NVIDIA + Wayland: using GL renderer, DMA-BUF off".to_string());
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: Some("gl".to_string()),
+            disable_dmabuf: true,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // NVIDIA + X11
+    if env.gpu_nvidia {
+        rationale.push("NVIDIA + X11: full hardware acceleration, DMA-BUF off".to_string());
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: Some("gl".to_string()),
+            disable_dmabuf: true,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // AMD + Wayland
+    if env.gpu_amd && is_wayland {
+        rationale.push("AMD + Wayland: NGL renderer with DMA-BUF".to_string());
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: Some("ngl".to_string()),
+            disable_dmabuf: false,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // AMD + X11
+    if env.gpu_amd {
+        rationale.push("AMD + X11: full hardware acceleration".to_string());
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: None,
+            disable_dmabuf: false,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // Intel + Wayland
+    if env.gpu_intel && is_wayland {
+        rationale.push("Intel + Wayland: NGL renderer with DMA-BUF".to_string());
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: Some("ngl".to_string()),
+            disable_dmabuf: false,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // Intel + X11
+    if env.gpu_intel {
+        rationale.push("Intel + X11: full hardware acceleration".to_string());
+        return Recommendation {
+            hardware_acceleration: true,
+            force_x11: false,
+            gsk_renderer: None,
+            disable_dmabuf: false,
+            disable_blur_background: false,
+            rationale,
+        };
+    }
+
+    // Unknown GPU: safe defaults
+    rationale.push("No known GPU detected: using safe defaults".to_string());
+    Recommendation {
+        hardware_acceleration: true,
+        force_x11: false,
+        gsk_renderer: None,
+        disable_dmabuf: false,
+        disable_blur_background: false,
+        rationale,
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn env(display_server: &str) -> Environment {
+        Environment {
+            display_server: display_server.to_string(),
+            gpu_nvidia: false,
+            gpu_amd: false,
+            gpu_intel: false,
+            gpu_name: "test".to_string(),
+            desktop: "Unknown".to_string(),
+            is_vm: false,
+        }
+    }
+
+    #[test]
+    fn vm_uses_cpu_fallback() {
+        let mut environment = env("Wayland");
+        environment.is_vm = true;
+
+        let recommendation = compute_recommendation(&environment);
+
+        assert!(!recommendation.hardware_acceleration);
+        assert_eq!(recommendation.gsk_renderer.as_deref(), Some("cairo"));
+        assert!(recommendation.disable_dmabuf);
+        assert!(recommendation.disable_blur_background);
+    }
+
+    #[test]
+    fn nvidia_hybrid_leaves_renderer_auto_and_disables_dmabuf() {
+        let mut environment = env("Wayland");
+        environment.gpu_nvidia = true;
+        environment.gpu_intel = true;
+
+        let recommendation = compute_recommendation(&environment);
+
+        assert!(recommendation.hardware_acceleration);
+        assert_eq!(recommendation.gsk_renderer, None);
+        assert!(recommendation.disable_dmabuf);
+    }
+
+    #[test]
+    fn nvidia_wayland_gnome_uses_gl_and_disables_dmabuf() {
+        let mut environment = env("Wayland");
+        environment.gpu_nvidia = true;
+        environment.desktop = "GNOME".to_string();
+
+        let recommendation = compute_recommendation(&environment);
+
+        assert_eq!(recommendation.gsk_renderer.as_deref(), Some("gl"));
+        assert!(recommendation.disable_dmabuf);
+    }
+
+    #[test]
+    fn nvidia_x11_uses_gl_and_disables_dmabuf() {
+        let mut environment = env("X11");
+        environment.gpu_nvidia = true;
+
+        let recommendation = compute_recommendation(&environment);
+
+        assert_eq!(recommendation.gsk_renderer.as_deref(), Some("gl"));
+        assert!(recommendation.disable_dmabuf);
+    }
+
+    #[test]
+    fn amd_wayland_uses_ngl_and_allows_dmabuf() {
+        let mut environment = env("Wayland");
+        environment.gpu_amd = true;
+
+        let recommendation = compute_recommendation(&environment);
+
+        assert_eq!(recommendation.gsk_renderer.as_deref(), Some("ngl"));
+        assert!(!recommendation.disable_dmabuf);
+    }
+
+    #[test]
+    fn intel_wayland_uses_ngl_and_allows_dmabuf() {
+        let mut environment = env("Wayland");
+        environment.gpu_intel = true;
+
+        let recommendation = compute_recommendation(&environment);
+
+        assert_eq!(recommendation.gsk_renderer.as_deref(), Some("ngl"));
+        assert!(!recommendation.disable_dmabuf);
+    }
+
+    #[test]
+    fn unknown_gpu_keeps_safe_defaults() {
+        let environment = env("X11");
+
+        let recommendation = compute_recommendation(&environment);
+
+        assert!(recommendation.hardware_acceleration);
+        assert!(!recommendation.force_x11);
+        assert_eq!(recommendation.gsk_renderer, None);
+        assert!(!recommendation.disable_dmabuf);
+        assert!(!recommendation.disable_blur_background);
+    }
+
+    #[test]
+    fn gpu_name_combines_hybrid_vendors() {
+        let name = detect_gpu_name(true, false, true);
+
+        assert!(name.contains("NVIDIA"));
+        assert!(name.contains("Intel"));
+        assert!(name.contains(" + "));
+    }
+}

crates/qbz-app/src/lib.rs

@@ -1,3 +1,4 @@
+pub mod graphics_autoconfig;
 pub mod graphics_detection;
 pub mod runtime;
 pub mod settings;

src-tauri/src/autoconfig_graphics.rs

@@ -1,43 +1,15 @@
-//! Graphics auto-configuration tool
+//! Graphics auto-configuration shell adapter.
 //!
-//! Detects the current GPU, display server, desktop environment, and compositor,
+//! Recommendation and host detection live in `qbz-app`; this module keeps the
-//! then recommends and applies optimal graphics settings.
+//! Tauri/WebKit-specific surfaces that prompt the CLI user and persist the
-//!
+//! selected recommendation into current settings stores.
-//! Two entry points:
-//!   - `run()` — CLI prompt invoked via `qbz --autoconfig-graphics`
-//!   - `detect_environment()` / `compute_recommendation()` / `apply_recommendation()`
-//!     — public helpers consumed by V2 commands that surface the recommendation
-//!     inside the Settings UI (issue #315 follow-up)
 
 use crate::config::graphics_settings::GraphicsSettingsStore;
-use serde::Serialize;
+use qbz_app::graphics_autoconfig::{
+    compute_recommendation, detect_environment, Environment, Recommendation,
+};
 use std::io::{self, BufRead, Write};
 
-/// Detected environment information
-#[derive(Debug, Clone, Serialize)]
-#[serde(rename_all = "snake_case")]
-pub struct Environment {
-    pub display_server: String,
-    pub gpu_nvidia: bool,
-    pub gpu_amd: bool,
-    pub gpu_intel: bool,
-    pub gpu_name: String,
-    pub desktop: String,
-    pub is_vm: bool,
-}
-
-/// Recommended configuration
-#[derive(Debug, Clone, Serialize)]
-#[serde(rename_all = "snake_case")]
-pub struct Recommendation {
-    pub hardware_acceleration: bool,
-    pub force_x11: bool,
-    pub gsk_renderer: Option<String>,
-    pub disable_dmabuf: bool,
-    pub disable_blur_background: bool,
-    pub rationale: Vec<String>,
-}
-
 /// Run the autoconfig-graphics CLI tool.
 pub fn run() {
     eprintln!("[QBZ AutoConfig] Detecting environment...");
@@ -66,157 +38,6 @@ pub fn run() {
     }
 }
 
-pub fn detect_environment() -> Environment {
-    let display_server = detect_display_server();
-    let gpu_nvidia = is_nvidia_gpu();
-    let gpu_amd = is_amd_gpu();
-    let gpu_intel = is_intel_gpu();
-    let gpu_name = detect_gpu_name(gpu_nvidia, gpu_amd, gpu_intel);
-    let desktop = detect_desktop();
-    let is_vm = is_virtual_machine();
-
-    Environment {
-        display_server,
-        gpu_nvidia,
-        gpu_amd,
-        gpu_intel,
-        gpu_name,
-        desktop,
-        is_vm,
-    }
-}
-
-fn detect_display_server() -> String {
-    let is_wayland = std::env::var_os("WAYLAND_DISPLAY").is_some()
-        || std::env::var("XDG_SESSION_TYPE").as_deref() == Ok("wayland");
-
-    if is_wayland {
-        "Wayland".to_string()
-    } else {
-        "X11".to_string()
-    }
-}
-
-fn is_nvidia_gpu() -> bool {
-    std::path::Path::new("/proc/driver/nvidia/version").exists()
-        || std::fs::read_to_string("/proc/modules")
-            .map(|m| m.lines().any(|l| l.starts_with("nvidia")))
-            .unwrap_or(false)
-}
-
-fn is_amd_gpu() -> bool {
-    std::path::Path::new("/sys/module/amdgpu").exists()
-        || std::fs::read_to_string("/proc/modules")
-            .map(|m| m.lines().any(|l| l.starts_with("amdgpu")))
-            .unwrap_or(false)
-}
-
-fn is_intel_gpu() -> bool {
-    std::path::Path::new("/sys/module/i915").exists()
-        || std::fs::read_to_string("/proc/modules")
-            .map(|m| m.lines().any(|l| l.starts_with("i915")))
-            .unwrap_or(false)
-}
-
-fn is_virtual_machine() -> bool {
-    if let Ok(product) = std::fs::read_to_string("/sys/class/dmi/id/product_name") {
-        let p = product.trim().to_lowercase();
-        if p.contains("virtualbox")
-            || p.contains("vmware")
-            || p.contains("qemu")
-            || p.contains("bochs")
-            || p.contains("hyper-v")
-        {
-            return true;
-        }
-    }
-    if let Ok(vendor) = std::fs::read_to_string("/sys/class/dmi/id/sys_vendor") {
-        let v = vendor.trim().to_lowercase();
-        if v.contains("innotek")
-            || v.contains("vmware")
-            || v.contains("qemu")
-            || v.contains("xen")
-            || v.contains("parallels")
-        {
-            return true;
-        }
-    }
-    if let Ok(h) = std::fs::read_to_string("/sys/hypervisor/type") {
-        if !h.trim().is_empty() {
-            return true;
-        }
-    }
-    false
-}
-
-pub fn detect_gpu_name(nvidia: bool, amd: bool, intel: bool) -> String {
-    // Hybrid laptops have more than one of these set; join the names
-    // so diagnostics surface the full picture instead of returning only
-    // the first vendor matched.
-    let mut parts: Vec<String> = Vec::new();
-    if nvidia {
-        parts.push(nvidia_name());
-    }
-    if amd {
-        parts.push(amd_name());
-    }
-    if intel {
-        parts.push(intel_name());
-    }
-    if parts.is_empty() {
-        "Unknown / None detected".to_string()
-    } else {
-        parts.join(" + ")
-    }
-}
-
-fn nvidia_name() -> String {
-    if let Ok(version) = std::fs::read_to_string("/proc/driver/nvidia/version") {
-        if let Some(line) = version.lines().next() {
-            return format!("NVIDIA ({})", line.trim());
-        }
-    }
-    "NVIDIA (driver loaded)".to_string()
-}
-
-fn amd_name() -> String {
-    if let Ok(entries) = std::fs::read_dir("/sys/class/drm") {
-        for entry in entries.flatten() {
-            let name = entry.file_name().to_string_lossy().to_string();
-            if name.starts_with("card") && !name.contains('-') {
-                let model_path = entry.path().join("device/product_name");
-                if let Ok(model) = std::fs::read_to_string(&model_path) {
-                    let model = model.trim();
-                    if !model.is_empty() {
-                        return format!("AMD {}", model);
-                    }
-                }
-            }
-        }
-    }
-    "AMD (amdgpu driver loaded)".to_string()
-}
-
-fn intel_name() -> String {
-    "Intel (i915/xe driver loaded)".to_string()
-}
-
-fn detect_desktop() -> String {
-    let desktop = std::env::var("XDG_CURRENT_DESKTOP").unwrap_or_default();
-    let session = std::env::var("XDG_SESSION_DESKTOP").unwrap_or_default();
-    let de = std::env::var("DESKTOP_SESSION").unwrap_or_default();
-
-    if !desktop.is_empty() {
-        desktop
-    } else if !session.is_empty() {
-        session
-    } else if !de.is_empty() {
-        de
-    } else {
-        "Unknown".to_string()
-    }
-}
-
 fn print_environment(env: &Environment) {
     eprintln!("  Display server : {}", env.display_server);
     eprintln!("  GPU            : {}", env.gpu_name);
@@ -227,154 +48,6 @@ fn print_environment(env: &Environment) {
     eprintln!();
 }
 
-pub fn compute_recommendation(env: &Environment) -> Recommendation {
-    let mut rationale = Vec::new();
-
-    // VM: software rendering, no blur
-    if env.is_vm {
-        rationale.push("Virtual machine detected: using software rendering".to_string());
-        return Recommendation {
-            hardware_acceleration: false,
-            force_x11: false,
-            gsk_renderer: Some("cairo".to_string()),
-            disable_dmabuf: true,
-            disable_blur_background: true,
-            rationale,
-        };
-    }
-
-    let is_wayland = env.display_server == "Wayland";
-    let desktop_lower = env.desktop.to_lowercase();
-    let is_gnome = desktop_lower.contains("gnome");
-    let has_hybrid_igpu = env.gpu_nvidia && (env.gpu_intel || env.gpu_amd);
-
-    // Hybrid laptops (NVIDIA dGPU + Intel/AMD iGPU). WebKit composes via
-    // the iGPU through EGL/GLX defaults — the NVIDIA card sits idle for
-    // PRIME render offload. Forcing GSK_RENDERER=gl here was hurting
-    // performance because the GL renderer biases toward the dGPU stack
-    // even when the iGPU is the actual paint target. Auto (None) lets
-    // GTK4 pick NGL/Vulkan as appropriate for the iGPU. DMA-BUF stays
-    // disabled — that one is fragile on any NVIDIA-touching setup.
-    if has_hybrid_igpu {
-        let igpu_label = if env.gpu_intel { "Intel" } else { "AMD" };
-        rationale.push(format!(
-            "NVIDIA + {} hybrid: iGPU handles WebKit compositing, leaving GSK at Auto",
-            igpu_label
-        ));
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: None,
-            disable_dmabuf: true,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // NVIDIA + Wayland + GNOME: known stutter combo
-    if env.gpu_nvidia && is_wayland && is_gnome {
-        rationale.push("NVIDIA + Wayland + GNOME: using GL renderer, DMA-BUF off".to_string());
-        rationale.push("This combination has known compositing issues".to_string());
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: Some("gl".to_string()),
-            disable_dmabuf: true,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // NVIDIA + Wayland (non-GNOME)
-    if env.gpu_nvidia && is_wayland {
-        rationale.push("NVIDIA + Wayland: using GL renderer, DMA-BUF off".to_string());
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: Some("gl".to_string()),
-            disable_dmabuf: true,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // NVIDIA + X11
-    if env.gpu_nvidia {
-        rationale.push("NVIDIA + X11: full hardware acceleration, DMA-BUF off".to_string());
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: Some("gl".to_string()),
-            disable_dmabuf: true,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // AMD + Wayland
-    if env.gpu_amd && is_wayland {
-        rationale.push("AMD + Wayland: NGL renderer with DMA-BUF".to_string());
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: Some("ngl".to_string()),
-            disable_dmabuf: false,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // AMD + X11
-    if env.gpu_amd {
-        rationale.push("AMD + X11: full hardware acceleration".to_string());
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: None,
-            disable_dmabuf: false,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // Intel + Wayland
-    if env.gpu_intel && is_wayland {
-        rationale.push("Intel + Wayland: NGL renderer with DMA-BUF".to_string());
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: Some("ngl".to_string()),
-            disable_dmabuf: false,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // Intel + X11
-    if env.gpu_intel {
-        rationale.push("Intel + X11: full hardware acceleration".to_string());
-        return Recommendation {
-            hardware_acceleration: true,
-            force_x11: false,
-            gsk_renderer: None,
-            disable_dmabuf: false,
-            disable_blur_background: false,
-            rationale,
-        };
-    }
-
-    // Unknown GPU: safe defaults
-    rationale.push("No known GPU detected: using safe defaults".to_string());
-    Recommendation {
-        hardware_acceleration: true,
-        force_x11: false,
-        gsk_renderer: None,
-        disable_dmabuf: false,
-        disable_blur_background: false,
-        rationale,
-    }
-}
-
 fn print_recommendation(rec: &Recommendation) {
     eprintln!("[QBZ AutoConfig] Recommended configuration:");
     eprintln!(
@@ -439,9 +112,9 @@ fn apply_recommendation(rec: &Recommendation) {
 /// for CLI, frontend toast for the Settings UI).
 ///
 /// DMA-BUF semantics after the 1.2.13 opt-in flip:
-///   - `rec.disable_dmabuf = true`  → force_dmabuf = false (matches default;
+///   - `rec.disable_dmabuf = true`  -> force_dmabuf = false (matches default;
 ///     runtime keeps DMA-BUF off).
-///   - `rec.disable_dmabuf = false` → force_dmabuf = true  (user opts in via
+///   - `rec.disable_dmabuf = false` -> force_dmabuf = true  (user opts in via
 ///     this recommendation; runtime turns DMA-BUF on).
 pub fn write_recommendation(rec: &Recommendation) -> Result<(), Vec<String>> {
     let mut errors = Vec::new();

src-tauri/src/commands_v2/diagnostics.rs

@@ -157,7 +157,7 @@ pub fn v2_get_runtime_diagnostics(
         runtime_is_vm: gfx_status.is_vm,
         runtime_hw_accel_enabled: gfx_status.hardware_accel_enabled,
         runtime_force_x11_active: gfx_status.force_x11_active,
-        runtime_gpu_name: crate::autoconfig_graphics::detect_gpu_name(
+        runtime_gpu_name: qbz_app::graphics_autoconfig::detect_gpu_name(
             gfx_status.has_nvidia,
             gfx_status.has_amd,
             gfx_status.has_intel,

src-tauri/src/commands_v2/graphics_recommendation.rs

@@ -4,8 +4,9 @@
 //! tool); this module is just the Tauri surface that the Graphics tab uses
 //! to render the "Detected / Recommended" banner.
 
-use crate::autoconfig_graphics::{
+use crate::autoconfig_graphics::write_recommendation;
-    compute_recommendation, detect_environment, write_recommendation, Environment, Recommendation,
+use qbz_app::graphics_autoconfig::{
+    compute_recommendation, detect_environment, Environment, Recommendation,
 };
 use serde::Serialize;