fix: ensure_default_models 每次启动重新检查模型文件存在性

src/plugins/ai/model_manager.rs

@@ -148,82 +148,87 @@ impl ModelManager {
     }
 
     /// 初始化默认模型清单（首次启动或清单缺失时）
+    /// 每次启动都重新检查文件存在性，更新 downloaded 状态（符号链接可能后建）
     pub fn ensure_default_models(&mut self) -> Result<()> {
-        if !self.registry.models.is_empty() {
-            return Ok(());
+        // 首次：注册表为空，填充默认清单
+        if self.registry.models.is_empty() {
+            let defaults = vec![
+                ModelInfo {
+                    id: "qwen2.5-0.5b-q4_k_m".to_string(),
+                    kind: ModelKind::Llm,
+                    name: "Qwen2.5 0.5B Q4 (推荐默认)".to_string(),
+                    version: "0.5b".to_string(),
+                    size: 469 * 1024 * 1024,
+                    memory_required: 1024 * 1024 * 1024,
+                    recommended_tier: "4G 内存档可用".to_string(),
+                    url: "https://hf-mirror.com/Qwen/Qwen2.5-0.5B-Instruct-GGUF/resolve/main/qwen2.5-0.5b-instruct-q4_k_m.gguf".to_string(),
+                    sha256: String::new(),
+                    filename: "qwen2.5-0.5b-q4_k_m.gguf".to_string(),
+                },
+                ModelInfo {
+                    id: "gemma3-1b-q4_k_m".to_string(),
+                    kind: ModelKind::Llm,
+                    name: "Gemma3 1B Q4 (可选档)".to_string(),
+                    version: "1b".to_string(),
+                    size: 800 * 1024 * 1024,
+                    memory_required: 2 * 1024 * 1024 * 1024,
+                    recommended_tier: "建议 8G 以上".to_string(),
+                    url: "https://hf-mirror.com/google/gemma-3-1b-it-GGUF/resolve/main/gemma-3-1b-it-q4_k_m.gguf".to_string(),
+                    sha256: String::new(),
+                    filename: "gemma3-1b-q4_k_m.gguf".to_string(),
+                },
+                ModelInfo {
+                    id: "whisper-tiny".to_string(),
+                    kind: ModelKind::Asr,
+                    name: "Whisper Tiny (中文)".to_string(),
+                    version: "tiny".to_string(),
+                    size: 75 * 1024 * 1024,
+                    memory_required: 200 * 1024 * 1024,
+                    recommended_tier: "4G 内存档可用".to_string(),
+                    url: "https://hf-mirror.com/ggerganov/whisper.cpp/resolve/main/ggml-tiny.bin".to_string(),
+                    sha256: String::new(),
+                    filename: "ggml-tiny.bin".to_string(),
+                },
+                ModelInfo {
+                    id: "piper-zh-huayan".to_string(),
+                    kind: ModelKind::Tts,
+                    name: "Piper zh_CN huayan (中文女声)".to_string(),
+                    version: "medium".to_string(),
+                    size: 63 * 1024 * 1024,
+                    memory_required: 150 * 1024 * 1024,
+                    recommended_tier: "4G 内存档可用".to_string(),
+                    url: "https://hf-mirror.com/rhasspy/piper-voices/resolve/main/zh/zh_CN/huayan/medium/zh_CN-huayan-medium.onnx".to_string(),
+                    sha256: String::new(),
+                    filename: "zh_CN-huayan-medium.onnx".to_string(),
+                },
+            ];
+
+            for info in defaults {
+                self.registry.models.push(LocalModelEntry {
+                    info,
+                    downloaded: false,
+                    download_progress: 0,
+                });
+            }
+
+            // 设置默认 active 模型
+            if !self.registry.active.contains_key(&ModelKind::Llm) {
+                self.registry.active.insert(ModelKind::Llm, "qwen2.5-0.5b-q4_k_m".to_string());
+            }
+            if !self.registry.active.contains_key(&ModelKind::Asr) {
+                self.registry.active.insert(ModelKind::Asr, "whisper-tiny".to_string());
+            }
+            if !self.registry.active.contains_key(&ModelKind::Tts) {
+                self.registry.active.insert(ModelKind::Tts, "piper-zh-huayan".to_string());
+            }
         }
 
-        // Spike 推荐的默认模型清单
-        let defaults = vec![
-            ModelInfo {
-                id: "qwen2.5-0.5b-q4_k_m".to_string(),
-                kind: ModelKind::Llm,
-                name: "Qwen2.5 0.5B Q4 (推荐默认)".to_string(),
-                version: "0.5b".to_string(),
-                size: 469 * 1024 * 1024,
-                memory_required: 1024 * 1024 * 1024,
-                recommended_tier: "4G 内存档可用".to_string(),
-                url: "https://hf-mirror.com/Qwen/Qwen2.5-0.5B-Instruct-GGUF/resolve/main/qwen2.5-0.5b-instruct-q4_k_m.gguf".to_string(),
-                sha256: String::new(), // 实际部署时填充
-                filename: "qwen2.5-0.5b-q4_k_m.gguf".to_string(),
-            },
-            ModelInfo {
-                id: "gemma3-1b-q4_k_m".to_string(),
-                kind: ModelKind::Llm,
-                name: "Gemma3 1B Q4 (可选档)".to_string(),
-                version: "1b".to_string(),
-                size: 800 * 1024 * 1024,
-                memory_required: 2 * 1024 * 1024 * 1024,
-                recommended_tier: "建议 8G 以上".to_string(),
-                url: "https://hf-mirror.com/google/gemma-3-1b-it-GGUF/resolve/main/gemma-3-1b-it-q4_k_m.gguf".to_string(),
-                sha256: String::new(),
-                filename: "gemma3-1b-q4_k_m.gguf".to_string(),
-            },
-            ModelInfo {
-                id: "whisper-tiny".to_string(),
-                kind: ModelKind::Asr,
-                name: "Whisper Tiny (中文)".to_string(),
-                version: "tiny".to_string(),
-                size: 75 * 1024 * 1024,
-                memory_required: 200 * 1024 * 1024,
-                recommended_tier: "4G 内存档可用".to_string(),
-                url: "https://hf-mirror.com/ggerganov/whisper.cpp/resolve/main/ggml-tiny.bin".to_string(),
-                sha256: String::new(),
-                filename: "ggml-tiny.bin".to_string(),
-            },
-            ModelInfo {
-                id: "piper-zh-huayan".to_string(),
-                kind: ModelKind::Tts,
-                name: "Piper zh_CN huayan (中文女声)".to_string(),
-                version: "medium".to_string(),
-                size: 63 * 1024 * 1024,
-                memory_required: 150 * 1024 * 1024,
-                recommended_tier: "4G 内存档可用".to_string(),
-                url: "https://hf-mirror.com/rhasspy/piper-voices/resolve/main/zh/zh_CN/huayan/medium/zh_CN-huayan-medium.onnx".to_string(),
-                sha256: String::new(),
-                filename: "zh_CN-huayan-medium.onnx".to_string(),
-            },
-        ];
-
-        for info in defaults {
-            let filename = info.filename.clone();
-            let downloaded = self.store_dir.join(info.kind.dir_name()).join(&filename).exists();
-            self.registry.models.push(LocalModelEntry {
-                info,
-                downloaded,
-                download_progress: if downloaded { 100 } else { 0 },
-            });
-        }
-
-        // 设置默认 active 模型
-        if !self.registry.active.contains_key(&ModelKind::Llm) {
-            self.registry.active.insert(ModelKind::Llm, "qwen2.5-0.5b-q4_k_m".to_string());
-        }
-        if !self.registry.active.contains_key(&ModelKind::Asr) {
-            self.registry.active.insert(ModelKind::Asr, "whisper-tiny".to_string());
-        }
-        if !self.registry.active.contains_key(&ModelKind::Tts) {
-            self.registry.active.insert(ModelKind::Tts, "piper-zh-huayan".to_string());
+        // 每次启动都重新检查文件存在性（符号链接可能后建，或文件被手动删除）
+        for entry in &mut self.registry.models {
+            let path = self.store_dir.join(entry.info.kind.dir_name()).join(&entry.info.filename);
+            let exists = path.exists();
+            entry.downloaded = exists;
+            entry.download_progress = if exists { 100 } else { 0 };
         }
 
         self.save_registry()?;