feat(ai): 对接本地 Ollama qwen3:4b 模型

- default_provider 从 claude 切换到 ollama
- main.rs 支持 ollama/openai/claude 三种 provider 动态选择
- 新增 [ai.providers.ollama] 配置段（base_url/model/temperature）
- 前端 SSE AI 分析全链路验证通过

Cargo.lock

@@ -1411,10 +1411,12 @@ dependencies = [
  "async-trait",
  "axum",
  "chrono",
+ "dashmap",
  "erp-core",
  "futures",
  "handlebars",
  "hex",
+ "redis",
  "reqwest",
  "sea-orm",
  "serde",

crates/erp-server/config/default.toml

@@ -40,15 +40,23 @@ hmac_key = "__MUST_SET_VIA_ENV__"
 kek = "__MUST_SET_VIA_ENV__"
 
 [ai]
-default_provider = "claude"
+default_provider = "ollama"
 # AI API 密钥。留空则禁用 AI 功能；生产环境必须通过 ERP__AI__API_KEY 设置。
 api_key = ""
-model = "claude-sonnet-4-6"
+model = "qwen3:4b"
 max_tokens = 2048
 temperature = 0.3
 cache_ttl_seconds = 604800
 rate_limit_patient_daily = 10
 
+[ai.providers.ollama]
+provider_type = "ollama"
+base_url = "http://localhost:11434"
+default_model = "qwen3:4b"
+max_tokens = 2048
+temperature = 0.3
+is_enabled = true
+
 [storage]
 upload_dir = "./uploads"
 max_file_size = "10MB"

crates/erp-server/src/main.rs

@@ -511,16 +511,43 @@ async fn main() -> anyhow::Result<()> {
 
         tracing::info!(providers = ?registry.provider_names(), "AI Provider 注册完成");
 
-        // 构建默认 provider 用于 AnalysisService（保持 Box<dyn AiProvider> 签名）
-        let mut default_claude = erp_ai::provider::claude::ClaudeProvider::new(
+        // 根据 default_provider 配置构建 AnalysisService 的默认 provider
+        let default_provider: Box<dyn erp_ai::provider::AiProvider> =
+            match config.ai.default_provider.as_str() {
+                "ollama" => {
+                    let pcfg = config.ai.providers.get("ollama");
+                    let base_url = pcfg.and_then(|c| c.base_url.clone())
+                        .unwrap_or_else(|| "http://localhost:11434".to_string());
+                    let model = pcfg.map(|c| c.default_model.clone())
+                        .unwrap_or_else(|| config.ai.model.clone());
+                    tracing::info!(base_url = %base_url, model = %model, "AnalysisService 使用 Ollama 提供商");
+                    Box::new(erp_ai::provider::ollama::OllamaProvider::new(base_url, model))
+                }
+                "openai" => {
+                    let pcfg = config.ai.providers.get("openai");
+                    let api_key = pcfg.and_then(|c| c.api_key_env.as_ref())
+                        .and_then(|env| std::env::var(env).ok())
+                        .unwrap_or_default();
+                    let base_url = pcfg.and_then(|c| c.base_url.clone())
+                        .unwrap_or_else(|| "https://api.openai.com".to_string());
+                    let model = pcfg.map(|c| c.default_model.clone())
+                        .unwrap_or_else(|| config.ai.model.clone());
+                    Box::new(erp_ai::provider::openai::OpenAIProvider::new(api_key, base_url, model))
+                }
+                _ => {
+                    // 默认 Claude
+                    let mut claude = erp_ai::provider::claude::ClaudeProvider::new(
                         config.ai.api_key.clone(),
                     );
                     if let Some(ref base_url) = config.ai.base_url {
-            default_claude = default_claude.with_base_url(base_url.clone());
+                        claude = claude.with_base_url(base_url.clone());
                     }
+                    Box::new(claude)
+                }
+            };
 
         let analysis_svc = erp_ai::service::analysis::AnalysisService::new(
-            Box::new(default_claude),
+            default_provider,
             db.clone(),
         ).with_knowledge_source(std::sync::Arc::new(
             erp_ai::knowledge::structured_source::StructuredKnowledgeSource::new(db.clone()),