feat(lsp): add Java and Vue language server defaults

README.md

@@ -140,10 +140,10 @@ transcripts stay behind bounded handles through `agent_eval`. See
 [docs/SUBAGENTS.md](docs/SUBAGENTS.md).
 
 The rest of the surface: LSP diagnostics after every edit (rust-analyzer,
-pyright, typescript-language-server, gopls, clangd), RLM sessions for
-batched analysis, MCP protocol, HTTP/SSE runtime API, persistent task
-queue, ACP adapter for Zed, SWE-bench export, and live cost tracking with
-cache hit/miss breakdowns.
+pyright, typescript-language-server, gopls, clangd, jdtls,
+vue-language-server), RLM sessions for batched analysis, MCP protocol,
+HTTP/SSE runtime API, persistent task queue, ACP adapter for Zed,
+SWE-bench export, and live cost tracking with cache hit/miss breakdowns.
 
 ---
 

README.zh-CN.md

@@ -103,7 +103,7 @@ Fin——关闭思考的廉价 Flash 调用——每轮处理模型自动路由
 
 子智能体并发运行（最多 20 个）。`agent_open` 立即返回；结果以内联完成哨兵形式到达，携带摘要。完整对话记录通过 `agent_eval` 的有界句柄保存。详见 [docs/SUBAGENTS.md](docs/SUBAGENTS.md)。
 
-其余功能面：每次编辑后的 LSP 诊断（rust-analyzer、pyright、typescript-language-server、gopls、clangd）、RLM 会话批量分析、MCP 协议、HTTP/SSE 运行时 API、持久化任务队列、Zed 的 ACP 适配器、SWE-bench 导出、以及带缓存命中/未命中明细的实时成本追踪。
+其余功能面：每次编辑后的 LSP 诊断（rust-analyzer、pyright、typescript-language-server、gopls、clangd、jdtls、vue-language-server）、RLM 会话批量分析、MCP 协议、HTTP/SSE 运行时 API、持久化任务队列、Zed 的 ACP 适配器、SWE-bench 导出、以及带缓存命中/未命中明细的实时成本追踪。
 
 ---
 

config.example.toml

@@ -543,8 +543,13 @@ default_text_model = "deepseek-ai/deepseek-v4-pro"
 #   go         → gopls serve
 #   python     → pyright-langserver --stdio
 #   typescript → typescript-language-server --stdio
+#   java       → jdtls
+#   vue        → vue-language-server --stdio
 #   c, cpp     → clangd
 #
+# Java support uses Eclipse JDT LS via the `jdtls` command. IntelliJ IDEA is
+# not required, and installing IntelliJ IDEA alone does not install `jdtls`.
+#
 # Override the defaults via the `servers` table below.
 [lsp]
 # enabled = true
@@ -554,6 +559,8 @@ default_text_model = "deepseek-ai/deepseek-v4-pro"
 # [lsp.servers]
 # rust = ["rust-analyzer"]
 # go = ["gopls", "serve"]
+# java = ["jdtls"]
+# vue = ["vue-language-server", "--stdio"]
 
 # ─────────────────────────────────────────────────────────────────────────────────
 # Hooks (optional)

crates/tui/src/lsp/registry.rs

@@ -18,6 +18,8 @@ pub enum Language {
     Python,
     TypeScript,
     JavaScript,
+    Java,
+    Vue,
     C,
     Cpp,
     Other,
@@ -34,6 +36,8 @@ impl Language {
             Language::Python => "python",
             Language::TypeScript => "typescript",
             Language::JavaScript => "javascript",
+            Language::Java => "java",
+            Language::Vue => "vue",
             Language::C => "c",
             Language::Cpp => "cpp",
             Language::Other => "other",
@@ -42,7 +46,7 @@ impl Language {
 
     /// LSP `languageId` value used in `textDocument/didOpen`. We follow the
     /// LSP-spec values: `rust`, `go`, `python`, `typescript`, `javascript`,
-    /// `c`, `cpp`.
+    /// `java`, `vue`, `c`, `cpp`.
     #[must_use]
     pub fn language_id(self) -> &'static str {
         match self {
@@ -51,6 +55,8 @@ impl Language {
             Language::Python => "python",
             Language::TypeScript => "typescript",
             Language::JavaScript => "javascript",
+            Language::Java => "java",
+            Language::Vue => "vue",
             Language::C => "c",
             Language::Cpp => "cpp",
             Language::Other => "plaintext",
@@ -73,6 +79,8 @@ pub fn detect_language(path: &Path) -> Language {
         "py" | "pyi" => Language::Python,
         "ts" | "tsx" => Language::TypeScript,
         "js" | "jsx" | "mjs" | "cjs" => Language::JavaScript,
+        "java" => Language::Java,
+        "vue" => Language::Vue,
         "c" | "h" => Language::C,
         "cpp" | "cc" | "cxx" | "hpp" | "hxx" | "hh" => Language::Cpp,
         _ => Language::Other,
@@ -91,6 +99,8 @@ pub fn server_for(lang: Language) -> Option<(&'static str, &'static [&'static st
         Language::TypeScript | Language::JavaScript => {
             Some(("typescript-language-server", &["--stdio"]))
         }
+        Language::Java => Some(("jdtls", &[])),
+        Language::Vue => Some(("vue-language-server", &["--stdio"])),
         Language::C | Language::Cpp => Some(("clangd", &[])),
         Language::Other => None,
     }
@@ -132,6 +142,38 @@ mod tests {
         );
     }
 
+    #[test]
+    fn detects_java_extension() {
+        assert_eq!(
+            detect_language(&PathBuf::from("App.java")),
+            Language::Java
+        );
+        assert_eq!(
+            detect_language(&PathBuf::from("APP.JAVA")),
+            Language::Java
+        );
+    }
+
+    #[test]
+    fn detects_vue_extension() {
+        assert_eq!(
+            detect_language(&PathBuf::from("Component.vue")),
+            Language::Vue
+        );
+        assert_eq!(
+            detect_language(&PathBuf::from("COMPONENT.VUE")),
+            Language::Vue
+        );
+    }
+
+    #[test]
+    fn language_ids_for_java_and_vue_match_lsp_values() {
+        assert_eq!(Language::Java.as_key(), "java");
+        assert_eq!(Language::Java.language_id(), "java");
+        assert_eq!(Language::Vue.as_key(), "vue");
+        assert_eq!(Language::Vue.language_id(), "vue");
+    }
+
     #[test]
     fn server_for_rust_is_rust_analyzer() {
         let (cmd, args) = server_for(Language::Rust).expect("rust has a server");
@@ -139,6 +181,20 @@ mod tests {
         assert!(args.is_empty());
     }
 
+    #[test]
+    fn server_for_java_is_jdtls() {
+        let (cmd, args) = server_for(Language::Java).expect("java has a server");
+        assert_eq!(cmd, "jdtls");
+        assert!(args.is_empty());
+    }
+
+    #[test]
+    fn server_for_vue_is_vue_language_server() {
+        let (cmd, args) = server_for(Language::Vue).expect("vue has a server");
+        assert_eq!(cmd, "vue-language-server");
+        assert_eq!(args, &["--stdio"]);
+    }
+
     #[test]
     fn server_for_other_is_none() {
         assert!(server_for(Language::Other).is_none());

docs/ARCHITECTURE.md

@@ -156,7 +156,7 @@ drives turns through Chat Completions.
   - `mod.rs` - `LspManager` — lazy per-language transport pool + config
   - `client.rs` - `StdioLspTransport` — JSON-RPC over stdio with `didOpen`/`didChange`/`publishDiagnostics`
   - `diagnostics.rs` - Diagnostic types, severity, and HTML-block renderer
-  - `registry.rs` - Language detection and default server map (rust-analyzer, pyright, gopls, clangd, typescript-language-server)
+  - `registry.rs` - Language detection and default server map (rust-analyzer, pyright, gopls, clangd, typescript-language-server, jdtls, vue-language-server)
   - Wired into the engine via `core/engine/lsp_hooks.rs` — called after every successful edit
 
 ### Security