fix(hermes): restore gateway message sending dependencies

Hermes Gateway 能启动但消息发送链路仍可能不可用：工具安装环境缺少运行时依赖，
同时自定义端点场景下 provider 字段可能被省略，导致消息路由继续落到错误 provider。

## 补齐运行时依赖
- uv tool install 固定带上 HTTP 客户端依赖
- 补齐 OpenAI SDK 依赖
- 补齐 Gateway HTTP server 所需 aiohttp
- 补齐 browser/dialog 等工具链会触发的 websocket 依赖
- 安装日志同步展示完整安装参数，便于用户排查环境问题

## 明确 custom provider
- 自定义 base_url 时显式写入 provider: custom
- 如果 model 段已有 provider，则覆盖为 custom
- 如果 model 段缺少 provider，则补写 provider: custom
- 继续保留 OPENAI_API_KEY alias 自愈，确保辅助客户端和主流程读取同一份凭证

## 范围
- 桌面 Tauri 安装与配置自愈逻辑
- Web dev API 安装与配置自愈逻辑

scripts/dev-api.js

@@ -6931,7 +6931,7 @@ const handlers = {
       : 'hermes-agent @ git+https://github.com/NousResearch/hermes-agent.git'
     const installArgs = method === 'uv-pip'
       ? ['pip', 'install', pkg]
-      : ['tool', 'install', '--force', pkg, '--python', '3.11', '--with', 'croniter']
+      : ['tool', 'install', '--force', pkg, '--python', '3.11', '--with', 'croniter', '--with', 'httpx', '--with', 'openai', '--with', 'aiohttp', '--with', 'websockets']
     const result = spawnSync(uv, installArgs, {
       env: { ...process.env, PATH: hermesEnhancedPath(), GIT_TERMINAL_PROMPT: '0', ...gitMirrorEnv() },
       timeout: 600000,
@@ -6963,7 +6963,7 @@ const handlers = {
     if (!modelStr) throw new Error(`Provider '${providerId || 'custom'}' has no default model; please pass an explicit model name`)
     const baseUrlValue = baseUrl && baseUrl.trim() ? baseUrl.trim() : ''
     const baseUrlLine = baseUrlValue ? `  base_url: ${baseUrlValue}\n` : ''
-    const providerLine = providerId && providerId !== 'custom' ? `  provider: ${providerId}\n` : ''
+    const providerLine = providerId ? `  provider: ${providerId}\n` : ''
     const configPath = path.join(home, 'config.yaml')
     let configContent
     if (fs.existsSync(configPath)) {
@@ -8783,29 +8783,37 @@ function _sanitizeHermesOpenrouterCustomMismatch() {
   const expected = _normalizeProviderUrl('https://openrouter.ai/api/v1')
   const usesCustomEndpoint = base && base !== expected
   const aliasChanged = (!provider || provider === 'custom' || usesCustomEndpoint) ? _ensureCustomOpenAIKeyAlias() : false
-  if (provider !== 'openrouter') return aliasChanged
-  if (!base || base === expected) return aliasChanged
-  let envRaw = ''
-  try { envRaw = fs.readFileSync(path.join(home, '.env'), 'utf8') } catch {}
-  const hasOpenrouterKey = _envHasValue(envRaw, 'OPENROUTER_API_KEY')
-  const hasCustomKey = _envHasValue(envRaw, 'CUSTOM_API_KEY') || _envHasValue(envRaw, 'OPENAI_API_KEY')
-  if (hasOpenrouterKey && !hasCustomKey) return aliasChanged
+  if (!usesCustomEndpoint) return aliasChanged
+  if (provider === 'custom') return aliasChanged
   const out = []
   inModel = false
+  let providerWritten = false
   for (const line of raw.split('\n')) {
     const t = line.trim()
     if (t.startsWith('model:')) {
       inModel = true
+      providerWritten = false
       out.push(line)
       continue
     }
     if (inModel) {
       const indented = line.startsWith(' ') || line.startsWith('\t')
-      if (!indented && t && !t.startsWith('#')) inModel = false
-      else if (t.startsWith('provider:')) continue
+      if (!indented && t && !t.startsWith('#')) {
+        inModel = false
+        if (!providerWritten) {
+          out.push('  provider: custom')
+          providerWritten = true
+        }
+      }
+      else if (t.startsWith('provider:')) {
+        out.push('  provider: custom')
+        providerWritten = true
+        continue
+      }
     }
     out.push(line)
   }
+  if (inModel && !providerWritten) out.push('  provider: custom')
   let fixed = out.join('\n')
   if (!fixed.endsWith('\n')) fixed += '\n'
   fs.writeFileSync(configPath, fixed)

src-tauri/src/commands/hermes.rs

@@ -441,27 +441,21 @@ fn sanitize_hermes_openrouter_custom_mismatch() -> Result<bool, String> {
     } else {
         false
     };
-    if provider != "openrouter" {
+    if !uses_custom_endpoint {
         return Ok(alias_changed);
     }
-    if base.is_empty() || base == expected {
-        return Ok(alias_changed);
-    }
-
-    let env_raw = std::fs::read_to_string(home.join(".env")).unwrap_or_default();
-    let has_openrouter_key = env_file_has_value(&env_raw, "OPENROUTER_API_KEY");
-    let has_custom_key = env_file_has_value(&env_raw, "CUSTOM_API_KEY")
-        || env_file_has_value(&env_raw, "OPENAI_API_KEY");
-    if has_openrouter_key && !has_custom_key {
+    if provider == "custom" {
         return Ok(alias_changed);
     }
 
     let mut out = Vec::new();
     let mut in_model = false;
+    let mut provider_written = false;
     for line in raw.lines() {
         let trimmed = line.trim();
         if trimmed.starts_with("model:") {
             in_model = true;
+            provider_written = false;
             out.push(line.to_string());
             continue;
         }
@@ -469,12 +463,21 @@ fn sanitize_hermes_openrouter_custom_mismatch() -> Result<bool, String> {
             let indented = line.starts_with(' ') || line.starts_with('\t');
             if !indented && !trimmed.is_empty() && !trimmed.starts_with('#') {
                 in_model = false;
+                if !provider_written {
+                    out.push("  provider: custom".to_string());
+                    provider_written = true;
+                }
             } else if trimmed.starts_with("provider:") {
+                out.push("  provider: custom".to_string());
+                provider_written = true;
                 continue;
             }
         }
         out.push(line.to_string());
     }
+    if in_model && !provider_written {
+        out.push("  provider: custom".to_string());
+    }
     let mut fixed = out.join("\n");
     if !fixed.ends_with('\n') {
         fixed.push('\n');
@@ -1653,7 +1656,22 @@ async fn install_via_uv_tool(
 
     let mut cmd = tokio::process::Command::new(uv_path);
     cmd.args([
-        "tool", "install", "--force", &pkg, "--python", "3.11", "--with", "croniter",
+        "tool",
+        "install",
+        "--force",
+        &pkg,
+        "--python",
+        "3.11",
+        "--with",
+        "croniter",
+        "--with",
+        "httpx",
+        "--with",
+        "openai",
+        "--with",
+        "aiohttp",
+        "--with",
+        "websockets",
     ]);
 
     // 配置 PyPI 镜像（extras 的依赖仍从 PyPI 下载）
@@ -1678,7 +1696,7 @@ async fn install_via_uv_tool(
 
     let _ = app.emit(
         "hermes-install-log",
-        "uv tool install hermes-agent --python 3.11",
+        "uv tool install hermes-agent --python 3.11 --with croniter --with httpx --with openai --with aiohttp --with websockets",
     );
 
     let child = cmd.spawn().map_err(|e| format!("启动安装进程失败: {e}"))?;
@@ -1904,8 +1922,8 @@ pub async fn configure_hermes(
         _ => String::new(),
     };
     // Provider 字段用于稳定选择凭证来源。
-    // `custom` 不写 provider 行，让 Hermes Agent 从 base_url 自动推断。
-    let provider_line = if provider == "custom" || provider.is_empty() {
+    // `custom` 也需要显式写入，避免自定义端点被默认路由接管。
+    let provider_line = if provider.is_empty() {
         String::new()
     } else {
         format!("  provider: {provider}\n")
@@ -2026,7 +2044,7 @@ fn merge_hermes_config_yaml(
                 // base_url_line 已包含 "  base_url: xxx\n" 格式
                 result.push(base_url_line.trim_end().to_string());
             }
-            // provider_line 仅在非空时写入（Hermes 不需要 provider 字段）
+            // provider_line 仅在非空时写入，确保模型路由稳定。
             if !provider_line.is_empty() {
                 result.push(provider_line.trim_end().to_string());
             }