fix(claude): project CLAUDE_CODE_AUTO_MODE_SERVER from provider env into settings.json (#7893)

Claude Code 2.1.281 added a server-side auto mode classifier that only
works on official endpoints. Sessions routed through a gateway (or the
built-in proxy) get a blocking notice unless CLAUDE_CODE_AUTO_MODE_SERVER
is set to 0 — the officially documented compatibility option for proxies
and gateways. Providers carry that key in their env row, but the live
projection only writes floor (connection/auth/model) and exclusive
(compat switch) keys, so it never reached settings.json and the notice
kept coming back after every switch.

Classify it as a provider-exclusive env key: it is written on switch-in
and removed on switch-out only when the value is unchanged, so users can
still set it globally on their own. The frontend preset-scan mirror
(tests/config/claudeKeyFields.json) is updated in lockstep; the mirror
test keeps both sides honest.

Fixes #7891

src-tauri/src/live/floor.rs

@@ -98,6 +98,9 @@ pub const CLAUDE_EXCLUSIVE_ENV: &[&str] = &[
     "CLAUDE_CODE_ALWAYS_ENABLE_EFFORT",
     "CLAUDE_CODE_EXTRA_BODY",
     "CLAUDE_CODE_ENABLE_FINE_GRAINED_TOOL_STREAMING",
+    // auto mode 的服务端分类器只有官方端点支持；网关场景要设 0，否则会话被
+    // 阻断式提示卡住（官方文档给代理、网关的兼容选项）。
+    "CLAUDE_CODE_AUTO_MODE_SERVER",
     // 窗口类：取值由上游模型的窗口决定。
     "CLAUDE_CODE_MAX_CONTEXT_TOKENS",
     "CLAUDE_CODE_AUTO_COMPACT_WINDOW",

src-tauri/src/live/project/claude.rs

@@ -568,6 +568,36 @@ mod tests {
         );
     }
 
+    #[test]
+    fn gateway_compat_switches_reach_settings_json() {
+        // 回归：auto mode 的服务端分类器只有官方端点支持，网关场景的供应商行要带
+        // `CLAUDE_CODE_AUTO_MODE_SERVER=0`（官方文档给代理、网关的兼容选项）。
+        // 它此前不在独有字段清单里，行里写了也到不了 settings.json。
+        let gateway = json!({ "env": {
+            "ANTHROPIC_BASE_URL": "https://gw.example",
+            "ANTHROPIC_AUTH_TOKEN": "sk-gw",
+            "CLAUDE_CODE_AUTO_MODE_SERVER": "0"
+        }});
+        let live = json!({ "env": {
+            "ANTHROPIC_BASE_URL": "https://kimi.example",
+            "ANTHROPIC_AUTH_TOKEN": "sk-kimi"
+        }});
+        let out = project(&live, Some(&kimi()), &gateway);
+        assert_eq!(out["env"]["CLAUDE_CODE_AUTO_MODE_SERVER"], json!("0"));
+
+        // 切回不带它的官方端点：值没被改过，跟着上一家走。
+        let live = json!({ "env": {
+            "ANTHROPIC_BASE_URL": "https://gw.example",
+            "ANTHROPIC_AUTH_TOKEN": "sk-gw",
+            "CLAUDE_CODE_AUTO_MODE_SERVER": "0"
+        }});
+        let official = json!({ "env": { "ANTHROPIC_AUTH_TOKEN": "sk-official" } });
+        assert_eq!(
+            project(&live, Some(&gateway), &official)["env"].get("CLAUDE_CODE_AUTO_MODE_SERVER"),
+            None
+        );
+    }
+
     #[test]
     fn residue_goes_but_the_targets_own_value_stays_in_place() {
         // 旧版给 Kimi 注入的 262144，上一家行里没有：残留清理兜住。

tests/config/claudeKeyFields.json

@@ -44,6 +44,7 @@
     "CLAUDE_CODE_ALWAYS_ENABLE_EFFORT",
     "CLAUDE_CODE_EXTRA_BODY",
     "CLAUDE_CODE_ENABLE_FINE_GRAINED_TOOL_STREAMING",
+    "CLAUDE_CODE_AUTO_MODE_SERVER",
     "CLAUDE_CODE_MAX_CONTEXT_TOKENS",
     "CLAUDE_CODE_AUTO_COMPACT_WINDOW",
     "CLAUDE_CODE_MAX_OUTPUT_TOKENS",