diff --git a/scripts/dev-api.js b/scripts/dev-api.js
index 7ae0d4c..ef1128a 100644
--- a/scripts/dev-api.js
+++ b/scripts/dev-api.js
@@ -4209,6 +4209,103 @@ export function mergeHermesQuickCommandsConfig(config = {}, form = {}) {
   return next
 }
 
+function isHermesProviderOverrideName(value) {
+  return /^[a-zA-Z0-9_.-]+$/.test(String(value || '').trim())
+}
+
+function isHermesProviderModelName(value) {
+  const text = String(value || '').trim()
+  return !!text && !text.split('/').includes('..') && /^[a-zA-Z0-9_.:/@+-]+$/.test(text)
+}
+
+function normalizeHermesProviderTimeout(value, key) {
+  if (value === undefined || value === null || value === '') return undefined
+  return parseHermesInteger(value, key, 0, 1, 86400, true)
+}
+
+function normalizeHermesProviderModelOverrides(value, key) {
+  if (value === undefined) return undefined
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    throw new Error(`${key} 必须是 JSON 对象`)
+  }
+  const normalized = {}
+  for (const [rawModel, rawConfig] of Object.entries(value)) {
+    const model = String(rawModel || '').trim()
+    if (!isHermesProviderModelName(model)) {
+      throw new Error(`${key}.${model || '<empty>'} 模型名只能包含字母、数字、下划线、点、斜杠、冒号、@、加号和短横线`)
+    }
+    if (!rawConfig || typeof rawConfig !== 'object' || Array.isArray(rawConfig)) {
+      throw new Error(`${key}.${model} 必须是 JSON 对象`)
+    }
+    const entry = mergeConfigsPreservingFields(rawConfig, {})
+    for (const field of ['timeout_seconds', 'stale_timeout_seconds']) {
+      const parsed = normalizeHermesProviderTimeout(entry[field], `${key}.${model}.${field}`)
+      if (parsed === undefined) delete entry[field]
+      else entry[field] = parsed
+    }
+    normalized[model] = entry
+  }
+  return normalized
+}
+
+function validateHermesProviderOverrides(value) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    throw new Error('providers 必须是 JSON 对象')
+  }
+  const normalized = {}
+  for (const [rawProvider, rawConfig] of Object.entries(value)) {
+    const provider = String(rawProvider || '').trim().toLowerCase()
+    if (!provider || !isHermesProviderOverrideName(provider)) {
+      throw new Error(`providers.${rawProvider || '<empty>'} provider 名只能包含字母、数字、下划线、点和短横线`)
+    }
+    if (!rawConfig || typeof rawConfig !== 'object' || Array.isArray(rawConfig)) {
+      throw new Error(`providers.${provider} 必须是 JSON 对象`)
+    }
+    const entry = mergeConfigsPreservingFields(rawConfig, {})
+    for (const field of ['request_timeout_seconds', 'stale_timeout_seconds']) {
+      const parsed = normalizeHermesProviderTimeout(entry[field], `providers.${provider}.${field}`)
+      if (parsed === undefined) delete entry[field]
+      else entry[field] = parsed
+    }
+    if (Object.hasOwn(entry, 'models')) {
+      entry.models = normalizeHermesProviderModelOverrides(entry.models, `providers.${provider}.models`)
+    }
+    normalized[provider] = entry
+  }
+  return normalized
+}
+
+function parseHermesProviderOverridesJson(raw) {
+  const text = String(raw ?? '').trim()
+  if (!text) return {}
+  let value
+  try {
+    value = JSON.parse(text)
+  } catch (err) {
+    throw new Error(`providers JSON 格式错误: ${err.message}`)
+  }
+  return validateHermesProviderOverrides(value)
+}
+
+export function buildHermesProviderOverridesConfigValues(config = {}) {
+  const root = config && typeof config === 'object' && !Array.isArray(config) ? config : {}
+  const providers = root.providers && typeof root.providers === 'object' && !Array.isArray(root.providers)
+    ? validateHermesProviderOverrides(root.providers)
+    : {}
+  return {
+    providerOverridesJson: JSON.stringify(providers, null, 2),
+  }
+}
+
+export function mergeHermesProviderOverridesConfig(config = {}, form = {}) {
+  const next = mergeConfigsPreservingFields({}, config && typeof config === 'object' && !Array.isArray(config) ? config : {})
+  const currentValues = buildHermesProviderOverridesConfigValues(next)
+  const providers = parseHermesProviderOverridesJson(Object.hasOwn(form, 'providerOverridesJson') ? form.providerOverridesJson : currentValues.providerOverridesJson)
+  if (Object.keys(providers).length) next.providers = providers
+  else delete next.providers
+  return next
+}
+
 function normalizeHermesUnauthorizedDmBehavior(value, strict = false) {
   const normalized = String(value ?? '').trim().toLowerCase()
   if (['pair', 'ignore'].includes(normalized)) return normalized
@@ -11149,6 +11246,27 @@ const handlers = {
     }
   },
 
+  hermes_provider_overrides_config_read() {
+    const { configPath, exists, config } = readHermesConfigYamlObject()
+    return {
+      exists,
+      configPath,
+      values: buildHermesProviderOverridesConfigValues(config),
+    }
+  },
+
+  hermes_provider_overrides_config_save({ form } = {}) {
+    const { configPath, config } = readHermesConfigYamlObject()
+    const next = mergeHermesProviderOverridesConfig(config, form || {})
+    const backup = writeHermesConfigYamlObject(configPath, next)
+    return {
+      ok: true,
+      configPath,
+      backup,
+      values: buildHermesProviderOverridesConfigValues(next),
+    }
+  },
+
   hermes_agent_toolsets_config_read() {
     const { configPath, exists, config } = readHermesConfigYamlObject()
     return {
diff --git a/src-tauri/src/commands/hermes.rs b/src-tauri/src/commands/hermes.rs
index cf00c09..ba1412b 100644
--- a/src-tauri/src/commands/hermes.rs
+++ b/src-tauri/src/commands/hermes.rs
@@ -4407,6 +4407,176 @@ fn merge_hermes_quick_commands_config(
     Ok(())
 }
 
+fn is_hermes_provider_override_name(value: &str) -> bool {
+    let value = value.trim();
+    !value.is_empty()
+        && value
+            .chars()
+            .all(|ch| ch.is_ascii_alphanumeric() || matches!(ch, '_' | '.' | '-'))
+}
+
+fn is_hermes_provider_model_name(value: &str) -> bool {
+    let value = value.trim();
+    !value.is_empty()
+        && !value.split('/').any(|part| part == "..")
+        && value.chars().all(|ch| {
+            ch.is_ascii_alphanumeric() || matches!(ch, '_' | '.' | '/' | ':' | '@' | '+' | '-')
+        })
+}
+
+fn normalize_hermes_provider_timeout(
+    entry: &mut serde_json::Map<String, Value>,
+    field: &str,
+    key: &str,
+) -> Result<(), String> {
+    if !entry.contains_key(field) || entry.get(field).is_some_and(|value| value.is_null()) {
+        entry.remove(field);
+        return Ok(());
+    }
+    let value = entry.get(field).cloned().unwrap_or(Value::Null);
+    let parsed = if let Some(value) = value.as_i64() {
+        Some(value)
+    } else if let Some(value) = value.as_u64() {
+        i64::try_from(value).ok()
+    } else if let Some(value) = value.as_str() {
+        let text = value.trim();
+        if text.is_empty() {
+            None
+        } else {
+            text.parse::<i64>().ok()
+        }
+    } else {
+        None
+    };
+    let parsed = parsed.ok_or_else(|| format!("{key} 必须是整数"))?;
+    let parsed = validate_hermes_i64(Some(parsed), key, 300, 1, 86400)?;
+    entry.insert(field.to_string(), Value::Number(parsed.into()));
+    Ok(())
+}
+
+fn validate_hermes_provider_model_overrides(
+    value: &Value,
+    key: &str,
+) -> Result<serde_json::Map<String, Value>, String> {
+    let Some(map) = value.as_object() else {
+        return Err(format!("{key} 必须是 JSON 对象"));
+    };
+    let mut normalized = serde_json::Map::new();
+    for (raw_model, raw_config) in map {
+        let model = raw_model.trim();
+        if !is_hermes_provider_model_name(model) {
+            return Err(format!(
+                "{key}.{model} 模型名只能包含字母、数字、下划线、点、斜杠、冒号、@、加号和短横线"
+            ));
+        }
+        let Some(config) = raw_config.as_object() else {
+            return Err(format!("{key}.{model} 必须是 JSON 对象"));
+        };
+        let mut entry = config.clone();
+        normalize_hermes_provider_timeout(
+            &mut entry,
+            "timeout_seconds",
+            &format!("{key}.{model}.timeout_seconds"),
+        )?;
+        normalize_hermes_provider_timeout(
+            &mut entry,
+            "stale_timeout_seconds",
+            &format!("{key}.{model}.stale_timeout_seconds"),
+        )?;
+        normalized.insert(model.to_string(), Value::Object(entry));
+    }
+    Ok(normalized)
+}
+
+fn validate_hermes_provider_overrides(
+    value: &Value,
+) -> Result<serde_json::Map<String, Value>, String> {
+    let Some(map) = value.as_object() else {
+        return Err("providers 必须是 JSON 对象".to_string());
+    };
+    let mut normalized = serde_json::Map::new();
+    for (raw_provider, raw_config) in map {
+        let provider = raw_provider.trim().to_ascii_lowercase();
+        if !is_hermes_provider_override_name(&provider) {
+            return Err(format!(
+                "providers.{raw_provider} provider 名只能包含字母、数字、下划线、点和短横线"
+            ));
+        }
+        let Some(config) = raw_config.as_object() else {
+            return Err(format!("providers.{provider} 必须是 JSON 对象"));
+        };
+        let mut entry = config.clone();
+        normalize_hermes_provider_timeout(
+            &mut entry,
+            "request_timeout_seconds",
+            &format!("providers.{provider}.request_timeout_seconds"),
+        )?;
+        normalize_hermes_provider_timeout(
+            &mut entry,
+            "stale_timeout_seconds",
+            &format!("providers.{provider}.stale_timeout_seconds"),
+        )?;
+        if let Some(models) = entry.get("models") {
+            let models = validate_hermes_provider_model_overrides(
+                models,
+                &format!("providers.{provider}.models"),
+            )?;
+            entry.insert("models".to_string(), Value::Object(models));
+        }
+        normalized.insert(provider, Value::Object(entry));
+    }
+    Ok(normalized)
+}
+
+fn parse_hermes_provider_overrides_json(
+    raw: Option<String>,
+) -> Result<serde_json::Map<String, Value>, String> {
+    let text = raw.unwrap_or_default().trim().to_string();
+    if text.is_empty() {
+        return Ok(serde_json::Map::new());
+    }
+    let value: Value =
+        serde_json::from_str(&text).map_err(|err| format!("providers JSON 格式错误: {err}"))?;
+    validate_hermes_provider_overrides(&value)
+}
+
+fn build_hermes_provider_overrides_config_values(config: &serde_yaml::Value) -> Value {
+    let root = config.as_mapping();
+    let providers = root
+        .and_then(|map| map.get(yaml_key("providers")))
+        .and_then(|value| serde_json::to_value(value).ok())
+        .and_then(|value| validate_hermes_provider_overrides(&value).ok())
+        .unwrap_or_default();
+
+    serde_json::json!({
+        "providerOverridesJson": serde_json::to_string_pretty(&Value::Object(providers)).unwrap_or_else(|_| "{}".to_string()),
+    })
+}
+
+fn merge_hermes_provider_overrides_config(
+    config: &mut serde_yaml::Value,
+    form: &Value,
+) -> Result<(), String> {
+    let current = build_hermes_provider_overrides_config_values(config);
+    let providers = parse_hermes_provider_overrides_json(
+        form_string(form, "providerOverridesJson").or_else(|| {
+            current["providerOverridesJson"]
+                .as_str()
+                .map(ToString::to_string)
+        }),
+    )?;
+
+    let root = ensure_yaml_object(config)?;
+    if providers.is_empty() {
+        root.remove(yaml_key("providers"));
+    } else {
+        let yaml_value = serde_yaml::to_value(Value::Object(providers))
+            .map_err(|err| format!("providers 转换 YAML 失败: {err}"))?;
+        root.insert(yaml_key("providers"), yaml_value);
+    }
+    Ok(())
+}
+
 fn normalize_hermes_toolset_list(raw: Option<String>) -> Result<Vec<String>, String> {
     let mut normalized = Vec::new();
     for item in normalize_hermes_multiline_list(raw) {
@@ -7902,6 +8072,30 @@ pub fn hermes_quick_commands_config_save(form: Value) -> Result<Value, String> {
     }))
 }
 
+#[tauri::command]
+pub fn hermes_provider_overrides_config_read() -> Result<Value, String> {
+    let (config_path, exists, config) = read_hermes_channel_yaml_config()?;
+    ensure_yaml_object(&mut config.clone())?;
+    Ok(serde_json::json!({
+        "exists": exists,
+        "configPath": config_path.to_string_lossy(),
+        "values": build_hermes_provider_overrides_config_values(&config),
+    }))
+}
+
+#[tauri::command]
+pub fn hermes_provider_overrides_config_save(form: Value) -> Result<Value, String> {
+    let (config_path, _exists, mut config) = read_hermes_channel_yaml_config()?;
+    merge_hermes_provider_overrides_config(&mut config, &form)?;
+    let backup = write_hermes_yaml_config(&config_path, &config)?;
+    Ok(serde_json::json!({
+        "ok": true,
+        "configPath": config_path.to_string_lossy(),
+        "backup": backup,
+        "values": build_hermes_provider_overrides_config_values(&config),
+    }))
+}
+
 #[tauri::command]
 pub fn hermes_agent_toolsets_config_read() -> Result<Value, String> {
     let (config_path, exists, config) = read_hermes_channel_yaml_config()?;
@@ -15620,6 +15814,196 @@ streaming:
     }
 }
 
+#[cfg(test)]
+mod hermes_provider_overrides_config_tests {
+    use super::{
+        build_hermes_provider_overrides_config_values, merge_hermes_provider_overrides_config,
+    };
+    use serde_json::json;
+
+    #[test]
+    fn provider_overrides_values_have_empty_defaults() {
+        let config: serde_yaml::Value = serde_yaml::from_str("{}").unwrap();
+        let values = build_hermes_provider_overrides_config_values(&config);
+        assert_eq!(values["providerOverridesJson"], "{}");
+    }
+
+    #[test]
+    fn provider_overrides_values_read_yaml_mapping() {
+        let config: serde_yaml::Value = serde_yaml::from_str(
+            r#"
+providers:
+  ollama-local:
+    request_timeout_seconds: 300
+    stale_timeout_seconds: 900
+  anthropic:
+    request_timeout_seconds: 30
+    models:
+      claude-opus-4.6:
+        timeout_seconds: 600
+"#,
+        )
+        .unwrap();
+
+        let values = build_hermes_provider_overrides_config_values(&config);
+        let mapping: serde_json::Value =
+            serde_json::from_str(values["providerOverridesJson"].as_str().unwrap()).unwrap();
+        assert_eq!(
+            mapping["ollama-local"]["request_timeout_seconds"].as_i64(),
+            Some(300)
+        );
+        assert_eq!(
+            mapping["ollama-local"]["stale_timeout_seconds"].as_i64(),
+            Some(900)
+        );
+        assert_eq!(
+            mapping["anthropic"]["models"]["claude-opus-4.6"]["timeout_seconds"].as_i64(),
+            Some(600)
+        );
+    }
+
+    #[test]
+    fn merge_provider_overrides_config_preserves_unknown_fields() {
+        let mut config: serde_yaml::Value = serde_yaml::from_str(
+            r#"
+model:
+  provider: openrouter
+providers:
+  anthropic:
+    request_timeout_seconds: 30
+    custom_flag: keep-provider
+    models:
+      claude-opus-4.6:
+        timeout_seconds: 600
+        custom_flag: keep-model
+openrouter:
+  response_cache: true
+"#,
+        )
+        .unwrap();
+
+        merge_hermes_provider_overrides_config(
+            &mut config,
+            &json!({
+                "providerOverridesJson": r#"{
+                  "anthropic": {
+                    "request_timeout_seconds": 45,
+                    "stale_timeout_seconds": 300,
+                    "custom_flag": "keep-provider",
+                    "models": {
+                      "claude-opus-4.6": {
+                        "timeout_seconds": 900,
+                        "stale_timeout_seconds": 1200,
+                        "custom_flag": "keep-model"
+                      }
+                    }
+                  },
+                  "openai-codex": {
+                    "models": {
+                      "gpt-5.4": {
+                        "stale_timeout_seconds": 1800
+                      }
+                    }
+                  }
+                }"#,
+            }),
+        )
+        .unwrap();
+
+        assert_eq!(config["model"]["provider"].as_str(), Some("openrouter"));
+        assert_eq!(config["openrouter"]["response_cache"].as_bool(), Some(true));
+        assert_eq!(
+            config["providers"]["anthropic"]["request_timeout_seconds"].as_i64(),
+            Some(45)
+        );
+        assert_eq!(
+            config["providers"]["anthropic"]["stale_timeout_seconds"].as_i64(),
+            Some(300)
+        );
+        assert_eq!(
+            config["providers"]["anthropic"]["custom_flag"].as_str(),
+            Some("keep-provider")
+        );
+        assert_eq!(
+            config["providers"]["anthropic"]["models"]["claude-opus-4.6"]["timeout_seconds"]
+                .as_i64(),
+            Some(900)
+        );
+        assert_eq!(
+            config["providers"]["anthropic"]["models"]["claude-opus-4.6"]["stale_timeout_seconds"]
+                .as_i64(),
+            Some(1200)
+        );
+        assert_eq!(
+            config["providers"]["anthropic"]["models"]["claude-opus-4.6"]["custom_flag"].as_str(),
+            Some("keep-model")
+        );
+        assert_eq!(
+            config["providers"]["openai-codex"]["models"]["gpt-5.4"]["stale_timeout_seconds"]
+                .as_i64(),
+            Some(1800)
+        );
+    }
+
+    #[test]
+    fn merge_provider_overrides_config_removes_empty_mapping() {
+        let mut config: serde_yaml::Value = serde_yaml::from_str(
+            r#"
+providers:
+  anthropic:
+    request_timeout_seconds: 30
+streaming:
+  enabled: true
+"#,
+        )
+        .unwrap();
+
+        merge_hermes_provider_overrides_config(
+            &mut config,
+            &json!({ "providerOverridesJson": "{}" }),
+        )
+        .unwrap();
+
+        assert!(config["providers"].is_null());
+        assert_eq!(config["streaming"]["enabled"].as_bool(), Some(true));
+    }
+
+    #[test]
+    fn merge_provider_overrides_config_rejects_invalid_values() {
+        let mut config = serde_yaml::Value::Mapping(serde_yaml::Mapping::new());
+        let err = merge_hermes_provider_overrides_config(
+            &mut config,
+            &json!({ "providerOverridesJson": "[" }),
+        )
+        .unwrap_err();
+        assert!(err.contains("providers JSON"));
+        let err = merge_hermes_provider_overrides_config(
+            &mut config,
+            &json!({ "providerOverridesJson": r#"{ "bad provider": { "request_timeout_seconds": 30 } }"# }),
+        )
+        .unwrap_err();
+        assert!(err.contains("providers.bad provider"));
+        let err = merge_hermes_provider_overrides_config(
+            &mut config,
+            &json!({ "providerOverridesJson": r#"{ "anthropic": { "request_timeout_seconds": 0 } }"# }),
+        )
+        .unwrap_err();
+        assert!(err.contains("providers.anthropic.request_timeout_seconds"));
+        let err = merge_hermes_provider_overrides_config(
+            &mut config,
+            &json!({ "providerOverridesJson": r#"{ "anthropic": { "models": { "../secret": { "timeout_seconds": 30 } } } }"# }),
+        )
+        .unwrap_err();
+        assert!(err.contains("providers.anthropic.models.../secret"));
+        let err = merge_hermes_provider_overrides_config(
+            &mut config,
+            &json!({ "providerOverridesJson": r#"{ "anthropic": { "models": { "opus": { "timeout_seconds": "slow" } } } }"# }),
+        )
+        .unwrap_err();
+        assert!(err.contains("providers.anthropic.models.opus.timeout_seconds"));
+    }
+}
+
 #[cfg(test)]
 mod hermes_agent_toolsets_config_tests {
     use super::{build_hermes_agent_toolsets_config_values, merge_hermes_agent_toolsets_config};
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 3c34cfd..31b2bc6 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -277,6 +277,8 @@ pub fn run() {
             hermes::hermes_skills_config_save,
             hermes::hermes_quick_commands_config_read,
             hermes::hermes_quick_commands_config_save,
+            hermes::hermes_provider_overrides_config_read,
+            hermes::hermes_provider_overrides_config_save,
             hermes::hermes_agent_toolsets_config_read,
             hermes::hermes_agent_toolsets_config_save,
             hermes::hermes_platform_toolsets_config_read,
diff --git a/src/engines/hermes/pages/config.js b/src/engines/hermes/pages/config.js
index b98d5dc..0a1756f 100644
--- a/src/engines/hermes/pages/config.js
+++ b/src/engines/hermes/pages/config.js
@@ -83,6 +83,10 @@ const QUICK_COMMANDS_DEFAULTS = {
   quickCommandsJson: '{}',
 }
 
+const PROVIDER_OVERRIDES_DEFAULTS = {
+  providerOverridesJson: '{}',
+}
+
 const AGENT_TOOLSETS_DEFAULTS = {
   disabledToolsets: '',
 }
@@ -273,6 +277,7 @@ export function render() {
   let memoryValues = { ...MEMORY_DEFAULTS }
   let skillsValues = { ...SKILLS_DEFAULTS }
   let quickCommandsValues = { ...QUICK_COMMANDS_DEFAULTS }
+  let providerOverridesValues = { ...PROVIDER_OVERRIDES_DEFAULTS }
   let agentToolsetsValues = { ...AGENT_TOOLSETS_DEFAULTS }
   let platformToolsetsValues = { ...PLATFORM_TOOLSETS_DEFAULTS }
   let agentRuntimeValues = { ...AGENT_RUNTIME_DEFAULTS }
@@ -302,6 +307,7 @@ export function render() {
   let memoryLoading = true
   let skillsLoading = true
   let quickCommandsLoading = true
+  let providerOverridesLoading = true
   let agentToolsetsLoading = true
   let platformToolsetsLoading = true
   let agentRuntimeLoading = true
@@ -331,6 +337,7 @@ export function render() {
   let memorySaving = false
   let skillsSaving = false
   let quickCommandsSaving = false
+  let providerOverridesSaving = false
   let agentToolsetsSaving = false
   let platformToolsetsSaving = false
   let agentRuntimeSaving = false
@@ -360,6 +367,7 @@ export function render() {
   let memoryError = null
   let skillsError = null
   let quickCommandsError = null
+  let providerOverridesError = null
   let agentToolsetsError = null
   let platformToolsetsError = null
   let agentRuntimeError = null
@@ -388,7 +396,7 @@ export function render() {
   }
 
   function isBusy() {
-    return loading || runtimeLoading || compressionLoading || promptCachingLoading || openrouterCacheLoading || providerRoutingLoading || auxiliaryLoading || toolGuardrailsLoading || memoryLoading || skillsLoading || quickCommandsLoading || agentToolsetsLoading || platformToolsetsLoading || agentRuntimeLoading || unauthorizedDmLoading || securityLoading || displayLoading || humanDelayLoading || streamingLoading || executionLimitsLoading || ioSafetyLoading || checkpointsLoading || cronLoading || loggingLoading || approvalsLoading || privacyLoading || browserLoading || sttLoading || terminalLoading || saving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || platformToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || displaySaving || humanDelaySaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || privacySaving || browserSaving || sttSaving || terminalSaving
+    return loading || runtimeLoading || compressionLoading || promptCachingLoading || openrouterCacheLoading || providerRoutingLoading || auxiliaryLoading || toolGuardrailsLoading || memoryLoading || skillsLoading || quickCommandsLoading || providerOverridesLoading || agentToolsetsLoading || platformToolsetsLoading || agentRuntimeLoading || unauthorizedDmLoading || securityLoading || displayLoading || humanDelayLoading || streamingLoading || executionLimitsLoading || ioSafetyLoading || checkpointsLoading || cronLoading || loggingLoading || approvalsLoading || privacyLoading || browserLoading || sttLoading || terminalLoading || saving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || platformToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || displaySaving || humanDelaySaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || privacySaving || browserSaving || sttSaving || terminalSaving
   }
 
   function option(labelKey, value, selected) {
@@ -405,7 +413,7 @@ export function render() {
   }
 
   function renderRuntimePanel() {
-    const disabled = loading || saving || runtimeLoading || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || runtimeLoading || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel">
         <div class="hm-panel-header">
@@ -453,7 +461,7 @@ export function render() {
   }
 
   function renderCompressionPanel() {
-    const disabled = loading || saving || compressionLoading || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || runtimeSaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || compressionLoading || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || runtimeSaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-compression-panel">
         <div class="hm-panel-header">
@@ -503,7 +511,7 @@ export function render() {
   }
 
   function renderPromptCachingPanel() {
-    const disabled = loading || saving || promptCachingLoading || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || runtimeSaving || compressionSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || promptCachingLoading || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || runtimeSaving || compressionSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-prompt-caching-panel">
         <div class="hm-panel-header">
@@ -533,7 +541,7 @@ export function render() {
   }
 
   function renderOpenrouterCachePanel() {
-    const disabled = loading || saving || openrouterCacheLoading || openrouterCacheSaving || providerRoutingSaving || runtimeSaving || compressionSaving || promptCachingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || openrouterCacheLoading || openrouterCacheSaving || providerRoutingSaving || runtimeSaving || compressionSaving || promptCachingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-openrouter-cache-panel">
         <div class="hm-panel-header">
@@ -567,7 +575,7 @@ export function render() {
   }
 
   function renderProviderRoutingPanel() {
-    const disabled = loading || saving || providerRoutingLoading || providerRoutingSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || providerRoutingLoading || providerRoutingSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-provider-routing-panel">
         <div class="hm-panel-header">
@@ -629,7 +637,7 @@ export function render() {
   }
 
   function renderAuxiliaryConfigPanel() {
-    const disabled = loading || saving || auxiliaryLoading || auxiliarySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || auxiliaryLoading || auxiliarySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-auxiliary-panel">
         <div class="hm-panel-header">
@@ -706,7 +714,7 @@ export function render() {
   }
 
   function renderToolGuardrailsPanel() {
-    const disabled = loading || saving || toolGuardrailsLoading || toolGuardrailsSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || toolGuardrailsLoading || toolGuardrailsSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-guardrails-panel">
         <div class="hm-panel-header">
@@ -768,7 +776,7 @@ export function render() {
   }
 
   function renderMemoryPanel() {
-    const disabled = loading || saving || memoryLoading || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || memoryLoading || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-memory-panel">
         <div class="hm-panel-header">
@@ -818,7 +826,7 @@ export function render() {
   }
 
   function renderSkillsConfigPanel() {
-    const disabled = loading || saving || skillsLoading || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || skillsLoading || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-skills-panel">
         <div class="hm-panel-header">
@@ -850,7 +858,7 @@ export function render() {
   }
 
   function renderQuickCommandsConfigPanel() {
-    const disabled = loading || saving || quickCommandsLoading || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || quickCommandsLoading || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-quick-commands-panel">
         <div class="hm-panel-header">
@@ -875,8 +883,34 @@ export function render() {
     `
   }
 
+  function renderProviderOverridesConfigPanel() {
+    const disabled = loading || saving || providerOverridesLoading || providerOverridesSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    return `
+      <div class="hm-panel hm-config-runtime-panel hm-config-provider-overrides-panel">
+        <div class="hm-panel-header">
+          <div>
+            <div class="hm-panel-title">${t('engine.hermesProviderOverridesConfigTitle')}</div>
+            <div class="hm-channel-panel-desc">${t('engine.hermesProviderOverridesConfigDesc')}</div>
+          </div>
+          <div class="hm-panel-actions">
+            <span class="hm-muted">${providerOverridesSaving ? t('engine.hermesConfigStatusSaving') : providerOverridesLoading ? t('engine.hermesConfigStatusLoading') : t('engine.hermesProviderOverridesConfigStatusReady')}</span>
+            <button class="hm-btn hm-btn--cta hm-btn--sm" id="hm-provider-overrides-save" ${disabled ? 'disabled' : ''}>${t('engine.hermesProviderOverridesConfigSave')}</button>
+          </div>
+        </div>
+        <div class="hm-panel-body">
+          ${renderError(providerOverridesError)}
+          <label class="hm-field hm-field--wide">
+            <span class="hm-field-label">${t('engine.hermesProviderOverridesConfigJson')}</span>
+            <textarea id="hm-provider-overrides-json" class="hm-input" spellcheck="false" rows="9" ${disabled ? 'disabled' : ''} style="font-family:var(--hm-font-mono);line-height:1.65;min-height:260px">${esc(providerOverridesValues.providerOverridesJson)}</textarea>
+          </label>
+          <div class="hm-channel-footnote">${t('engine.hermesProviderOverridesConfigFootnote')}</div>
+        </div>
+      </div>
+    `
+  }
+
   function renderAgentToolsetsConfigPanel() {
-    const disabled = loading || saving || agentToolsetsLoading || agentToolsetsSaving || platformToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || agentToolsetsLoading || agentToolsetsSaving || platformToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-agent-toolsets-panel">
         <div class="hm-panel-header">
@@ -902,7 +936,7 @@ export function render() {
   }
 
   function renderPlatformToolsetsConfigPanel() {
-    const disabled = loading || saving || platformToolsetsLoading || platformToolsetsSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || platformToolsetsLoading || platformToolsetsSaving || agentToolsetsSaving || agentRuntimeSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-platform-toolsets-panel">
         <div class="hm-panel-header">
@@ -990,7 +1024,7 @@ export function render() {
   }
 
   function renderUnauthorizedDmConfigPanel() {
-    const disabled = loading || saving || unauthorizedDmLoading || unauthorizedDmSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || securitySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || unauthorizedDmLoading || unauthorizedDmSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || securitySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-unauthorized-dm-panel">
         <div class="hm-panel-header">
@@ -1020,7 +1054,7 @@ export function render() {
   }
 
   function renderSecurityConfigPanel() {
-    const disabled = loading || saving || securityLoading || securitySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || securityLoading || securitySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-security-panel">
         <div class="hm-panel-header">
@@ -1062,7 +1096,7 @@ export function render() {
   }
 
   function renderDisplayConfigPanel() {
-    const disabled = loading || saving || displayLoading || displaySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || humanDelaySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || displayLoading || displaySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || humanDelaySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-display-panel">
         <div class="hm-panel-header">
@@ -1160,7 +1194,7 @@ export function render() {
   }
 
   function renderHumanDelayConfigPanel() {
-    const disabled = loading || saving || humanDelayLoading || humanDelaySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || humanDelayLoading || humanDelaySaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || streamingSaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-human-delay-panel">
         <div class="hm-panel-header">
@@ -1198,7 +1232,7 @@ export function render() {
   }
 
   function renderStreamingPanel() {
-    const disabled = loading || saving || streamingLoading || streamingSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
+    const disabled = loading || saving || streamingLoading || streamingSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || securitySaving || executionLimitsSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-streaming-panel">
         <div class="hm-panel-header">
@@ -1250,7 +1284,7 @@ export function render() {
   }
 
   function renderExecutionLimitsPanel() {
-    const disabled = loading || saving || executionLimitsLoading || executionLimitsSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving
+    const disabled = loading || saving || executionLimitsLoading || executionLimitsSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-execution-limits-panel">
         <div class="hm-panel-header">
@@ -1322,7 +1356,7 @@ export function render() {
   }
 
   function renderIoSafetyPanel() {
-    const disabled = loading || saving || ioSafetyLoading || ioSafetySaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving
+    const disabled = loading || saving || ioSafetyLoading || ioSafetySaving || checkpointsSaving || cronSaving || loggingSaving || approvalsSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-io-safety-panel">
         <div class="hm-panel-header">
@@ -1362,7 +1396,7 @@ export function render() {
   }
 
   function renderCheckpointsPanel() {
-    const disabled = loading || saving || checkpointsLoading || checkpointsSaving || ioSafetySaving || cronSaving || loggingSaving || approvalsSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving
+    const disabled = loading || saving || checkpointsLoading || checkpointsSaving || ioSafetySaving || cronSaving || loggingSaving || approvalsSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-checkpoints-panel">
         <div class="hm-panel-header">
@@ -1420,7 +1454,7 @@ export function render() {
   }
 
   function renderCronPanel() {
-    const disabled = loading || saving || cronLoading || cronSaving || checkpointsSaving || loggingSaving || approvalsSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving
+    const disabled = loading || saving || cronLoading || cronSaving || checkpointsSaving || loggingSaving || approvalsSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-cron-panel">
         <div class="hm-panel-header">
@@ -1454,7 +1488,7 @@ export function render() {
   }
 
   function renderLoggingPanel() {
-    const disabled = loading || saving || loggingLoading || loggingSaving || checkpointsSaving || cronSaving || approvalsSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving
+    const disabled = loading || saving || loggingLoading || loggingSaving || checkpointsSaving || cronSaving || approvalsSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-logging-panel">
         <div class="hm-panel-header">
@@ -1502,7 +1536,7 @@ export function render() {
   }
 
   function renderApprovalsPanel() {
-    const disabled = loading || saving || approvalsLoading || approvalsSaving || checkpointsSaving || cronSaving || loggingSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving
+    const disabled = loading || saving || approvalsLoading || approvalsSaving || checkpointsSaving || cronSaving || loggingSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-approvals-panel">
         <div class="hm-panel-header">
@@ -1552,7 +1586,7 @@ export function render() {
   }
 
   function renderPrivacyPanel() {
-    const disabled = loading || saving || privacyLoading || privacySaving || approvalsSaving || cronSaving || loggingSaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving
+    const disabled = loading || saving || privacyLoading || privacySaving || approvalsSaving || cronSaving || loggingSaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-privacy-panel">
         <div class="hm-panel-header">
@@ -1580,7 +1614,7 @@ export function render() {
   }
 
   function renderBrowserPanel() {
-    const disabled = loading || saving || browserLoading || browserSaving || approvalsSaving || cronSaving || loggingSaving || privacySaving || sttSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving
+    const disabled = loading || saving || browserLoading || browserSaving || approvalsSaving || cronSaving || loggingSaving || privacySaving || sttSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-browser-panel">
         <div class="hm-panel-header">
@@ -1624,7 +1658,7 @@ export function render() {
   }
 
   function renderSttPanel() {
-    const disabled = loading || saving || sttLoading || sttSaving || approvalsSaving || cronSaving || loggingSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving
+    const disabled = loading || saving || sttLoading || sttSaving || approvalsSaving || cronSaving || loggingSaving || privacySaving || browserSaving || terminalSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || ioSafetySaving || checkpointsSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-stt-panel">
         <div class="hm-panel-header">
@@ -1682,7 +1716,7 @@ export function render() {
   }
 
   function renderTerminalPanel() {
-    const disabled = loading || saving || terminalLoading || terminalSaving || approvalsSaving || cronSaving || loggingSaving || browserSaving || sttSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving
+    const disabled = loading || saving || terminalLoading || terminalSaving || approvalsSaving || cronSaving || loggingSaving || browserSaving || sttSaving || runtimeSaving || compressionSaving || promptCachingSaving || openrouterCacheSaving || providerRoutingSaving || auxiliarySaving || toolGuardrailsSaving || memorySaving || skillsSaving || quickCommandsSaving || providerOverridesSaving || agentToolsetsSaving || agentRuntimeSaving || unauthorizedDmSaving || streamingSaving || executionLimitsSaving || checkpointsSaving
     return `
       <div class="hm-panel hm-config-runtime-panel hm-config-terminal-panel">
         <div class="hm-panel-header">
@@ -1787,6 +1821,7 @@ export function render() {
       ${renderMemoryPanel()}
       ${renderSkillsConfigPanel()}
       ${renderQuickCommandsConfigPanel()}
+      ${renderProviderOverridesConfigPanel()}
       ${renderAgentToolsetsConfigPanel()}
       ${renderPlatformToolsetsConfigPanel()}
       ${renderAgentRuntimeConfigPanel()}
@@ -1823,6 +1858,7 @@ export function render() {
     el.querySelector('#hm-memory-save')?.addEventListener('click', saveMemory)
     el.querySelector('#hm-skills-config-save')?.addEventListener('click', saveSkillsConfig)
     el.querySelector('#hm-quick-commands-save')?.addEventListener('click', saveQuickCommandsConfig)
+    el.querySelector('#hm-provider-overrides-save')?.addEventListener('click', saveProviderOverridesConfig)
     el.querySelector('#hm-agent-toolsets-save')?.addEventListener('click', saveAgentToolsetsConfig)
     el.querySelector('#hm-platform-toolsets-save')?.addEventListener('click', savePlatformToolsetsConfig)
     el.querySelector('#hm-agent-runtime-save')?.addEventListener('click', saveAgentRuntimeConfig)
@@ -1898,6 +1934,11 @@ export function render() {
     quickCommandsValues = { ...QUICK_COMMANDS_DEFAULTS, ...(data?.values || {}) }
   }
 
+  async function loadProviderOverridesConfig() {
+    const data = await api.hermesProviderOverridesConfigRead()
+    providerOverridesValues = { ...PROVIDER_OVERRIDES_DEFAULTS, ...(data?.values || {}) }
+  }
+
   async function loadAgentToolsetsConfig() {
     const data = await api.hermesAgentToolsetsConfigRead()
     agentToolsetsValues = { ...AGENT_TOOLSETS_DEFAULTS, ...(data?.values || {}) }
@@ -2000,6 +2041,7 @@ export function render() {
     memoryLoading = true
     skillsLoading = true
     quickCommandsLoading = true
+    providerOverridesLoading = true
     agentToolsetsLoading = true
     platformToolsetsLoading = true
     agentRuntimeLoading = true
@@ -2029,6 +2071,7 @@ export function render() {
     memoryError = null
     skillsError = null
     quickCommandsError = null
+    providerOverridesError = null
     agentToolsetsError = null
     platformToolsetsError = null
     agentRuntimeError = null
@@ -2223,6 +2266,14 @@ export function render() {
       quickCommandsLoading = false
       draw()
     }
+    try {
+      await loadProviderOverridesConfig()
+    } catch (err) {
+      providerOverridesError = humanizeError(err, t('engine.hermesProviderOverridesConfigLoadFailed') || 'Load provider override config failed')
+    } finally {
+      providerOverridesLoading = false
+      draw()
+    }
     try {
       await loadAgentToolsetsConfig()
     } catch (err) {
@@ -2330,6 +2381,9 @@ export function render() {
       try {
         await loadQuickCommandsConfig()
       } catch {}
+      try {
+        await loadProviderOverridesConfig()
+      } catch {}
       try {
         await loadAgentToolsetsConfig()
       } catch {}
@@ -2677,6 +2731,31 @@ export function render() {
     }
   }
 
+  async function saveProviderOverridesConfig() {
+    const form = {
+      providerOverridesJson: el.querySelector('#hm-provider-overrides-json')?.value || '{}',
+    }
+    providerOverridesSaving = true
+    providerOverridesError = null
+    draw()
+    try {
+      const result = await api.hermesProviderOverridesConfigSave(form)
+      providerOverridesValues = { ...PROVIDER_OVERRIDES_DEFAULTS, ...(result?.values || form) }
+      await refreshRawAfterStructuredSave()
+      const backup = result?.backup || ''
+      toast({
+        message: t('engine.hermesProviderOverridesConfigSaveSuccess'),
+        hint: backup ? t('engine.hermesConfigBackupHint', { path: backup }) : '',
+      }, 'success')
+    } catch (err) {
+      providerOverridesError = humanizeError(err, t('engine.hermesProviderOverridesConfigSaveFailed') || 'Save provider override config failed')
+      toast(providerOverridesError, 'error')
+    } finally {
+      providerOverridesSaving = false
+      draw()
+    }
+  }
+
   async function saveAgentToolsetsConfig() {
     const form = {
       disabledToolsets: el.querySelector('#hm-agent-disabled-toolsets')?.value || '',
diff --git a/src/lib/tauri-api.js b/src/lib/tauri-api.js
index 0e9c840..fa63114 100644
--- a/src/lib/tauri-api.js
+++ b/src/lib/tauri-api.js
@@ -529,6 +529,8 @@ export const api = {
   hermesSkillsConfigSave: (form) => invoke('hermes_skills_config_save', { form }),
   hermesQuickCommandsConfigRead: () => invoke('hermes_quick_commands_config_read'),
   hermesQuickCommandsConfigSave: (form) => invoke('hermes_quick_commands_config_save', { form }),
+  hermesProviderOverridesConfigRead: () => invoke('hermes_provider_overrides_config_read'),
+  hermesProviderOverridesConfigSave: (form) => invoke('hermes_provider_overrides_config_save', { form }),
   hermesAgentToolsetsConfigRead: () => invoke('hermes_agent_toolsets_config_read'),
   hermesAgentToolsetsConfigSave: (form) => invoke('hermes_agent_toolsets_config_save', { form }),
   hermesPlatformToolsetsConfigRead: () => invoke('hermes_platform_toolsets_config_read'),
diff --git a/src/locales/modules/engine.js b/src/locales/modules/engine.js
index ca008b1..b6436bf 100644
--- a/src/locales/modules/engine.js
+++ b/src/locales/modules/engine.js
@@ -823,6 +823,15 @@ export default {
   hermesQuickCommandsConfigSaveFailed: _('保存快捷命令失败', 'Save quick commands failed', '儲存快捷命令失敗'),
   hermesQuickCommandsConfigJson: _('quick_commands JSON 映射', 'quick_commands JSON map', 'quick_commands JSON 映射'),
   hermesQuickCommandsConfigFootnote: _('键名会变成斜杠命令，例如 status 对应 /status。每个命令必须是对象，type 只能为 exec 或 alias；exec 需要 command，alias 的 target 必须以 / 开头。', 'Keys become slash commands, for example status maps to /status. Each command must be an object with type exec or alias; exec needs command, and alias target must start with /.', '鍵名會變成斜線命令，例如 status 對應 /status。每個命令必須是物件，type 只能是 exec 或 alias；exec 需要 command，alias 的 target 必須以 / 開頭。'),
+  hermesProviderOverridesConfigTitle: _('Provider 超时覆盖', 'Provider timeout overrides', 'Provider 逾時覆蓋'),
+  hermesProviderOverridesConfigDesc: _('为指定 provider 或模型单独设置请求超时和非流式卡死检测，适合本地模型冷启动、慢速大上下文和云端快速失败策略。', 'Set request timeouts and non-streaming stale detection per provider or model. Useful for local cold starts, slow large contexts, and fast-fail cloud routes.', '為指定 provider 或模型單獨設定請求逾時和非串流卡死偵測，適合本地模型冷啟動、慢速大上下文和雲端快速失敗策略。'),
+  hermesProviderOverridesConfigStatusReady: _('结构化 JSON', 'structured JSON', '結構化 JSON'),
+  hermesProviderOverridesConfigSave: _('保存超时覆盖', 'Save timeout overrides', '儲存逾時覆蓋'),
+  hermesProviderOverridesConfigSaveSuccess: _('Provider 超时覆盖已保存，建议重启 Hermes Gateway 生效', 'Provider timeout overrides saved. Restart Hermes Gateway to take effect.', 'Provider 逾時覆蓋已儲存，建議重啟 Hermes Gateway 生效'),
+  hermesProviderOverridesConfigLoadFailed: _('加载 Provider 超时覆盖失败', 'Load provider timeout overrides failed', '載入 Provider 逾時覆蓋失敗'),
+  hermesProviderOverridesConfigSaveFailed: _('保存 Provider 超时覆盖失败', 'Save provider timeout overrides failed', '儲存 Provider 逾時覆蓋失敗'),
+  hermesProviderOverridesConfigJson: _('providers JSON 映射', 'providers JSON map', 'providers JSON 映射'),
+  hermesProviderOverridesConfigFootnote: _('键名是 provider slug。支持 request_timeout_seconds、stale_timeout_seconds，以及 models.<model>.timeout_seconds / stale_timeout_seconds；未知字段会保留在 raw YAML 中。', 'Keys are provider slugs. Supports request_timeout_seconds, stale_timeout_seconds, and models.<model>.timeout_seconds / stale_timeout_seconds. Unknown fields stay in raw YAML.', '鍵名是 provider slug。支援 request_timeout_seconds、stale_timeout_seconds，以及 models.<model>.timeout_seconds / stale_timeout_seconds；未知欄位會保留在 raw YAML 中。'),
   hermesAgentToolsetsConfigTitle: _('全局工具开关', 'Global tool switches', '全域工具開關'),
   hermesAgentToolsetsConfigDesc: _('在 CLI 和所有 Gateway 渠道里统一禁用指定工具集，适合公网部署、只读模式或临时收紧高风险能力。', 'Disable selected toolsets globally across CLI and all Gateway channels. Useful for public deployments, read-only mode, or temporarily reducing high-risk capabilities.', '在 CLI 和所有 Gateway 渠道裡統一停用指定工具集，適合公開部署、唯讀模式或暫時收緊高風險能力。'),
   hermesAgentToolsetsConfigStatusReady: _('结构化列表', 'structured list', '結構化清單'),
diff --git a/tests/hermes-config-page-ui.test.js b/tests/hermes-config-page-ui.test.js
index b55f986..2903d3a 100644
--- a/tests/hermes-config-page-ui.test.js
+++ b/tests/hermes-config-page-ui.test.js
@@ -58,6 +58,15 @@ test('Hermes 配置页会暴露快捷命令结构化配置字段', () => {
   }
 })
 
+test('Hermes 配置页会暴露 provider 超时覆盖结构化配置字段', () => {
+  for (const id of [
+    'hm-provider-overrides-save',
+    'hm-provider-overrides-json',
+  ]) {
+    assert.match(source, new RegExp(`id="${id}"`), `缺少 ${id}`)
+  }
+})
+
 test('Hermes 配置页会暴露全局禁用工具集结构化配置字段', () => {
   for (const id of [
     'hm-agent-toolsets-save',
@@ -351,6 +360,7 @@ test('Hermes 配置页新增结构化配置不会暴露翻译 key', () => {
     key.includes('MemoryConfig') ||
     key.includes('SkillsConfig') ||
     key.includes('QuickCommandsConfig') ||
+    key.includes('ProviderOverridesConfig') ||
     key.includes('AgentToolsetsConfig') ||
     key.includes('AgentRuntimeConfig') ||
     key.includes('UnauthorizedDmConfig') ||
diff --git a/tests/hermes-provider-overrides-config.test.js b/tests/hermes-provider-overrides-config.test.js
new file mode 100644
index 0000000..f90b631
--- /dev/null
+++ b/tests/hermes-provider-overrides-config.test.js
@@ -0,0 +1,131 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+
+import {
+  buildHermesProviderOverridesConfigValues,
+  mergeHermesProviderOverridesConfig,
+} from '../scripts/dev-api.js'
+
+test('Hermes provider 覆盖配置读取会提供空对象默认值', () => {
+  const values = buildHermesProviderOverridesConfigValues({})
+
+  assert.deepEqual(values, {
+    providerOverridesJson: '{}',
+  })
+})
+
+test('Hermes provider 覆盖配置读取会格式化上游超时结构', () => {
+  const values = buildHermesProviderOverridesConfigValues({
+    providers: {
+      'ollama-local': {
+        request_timeout_seconds: 300,
+        stale_timeout_seconds: 900,
+      },
+      anthropic: {
+        request_timeout_seconds: 30,
+        models: {
+          'claude-opus-4.6': {
+            timeout_seconds: 600,
+          },
+        },
+      },
+    },
+  })
+  const mapping = JSON.parse(values.providerOverridesJson)
+
+  assert.deepEqual(mapping['ollama-local'], {
+    request_timeout_seconds: 300,
+    stale_timeout_seconds: 900,
+  })
+  assert.deepEqual(mapping.anthropic.models['claude-opus-4.6'], {
+    timeout_seconds: 600,
+  })
+})
+
+test('Hermes provider 覆盖配置保存会保留未知字段并写入 providers', () => {
+  const next = mergeHermesProviderOverridesConfig({
+    model: { provider: 'openrouter' },
+    providers: {
+      anthropic: {
+        request_timeout_seconds: 30,
+        custom_flag: 'keep-provider',
+        models: {
+          'claude-opus-4.6': {
+            timeout_seconds: 600,
+            custom_flag: 'keep-model',
+          },
+        },
+      },
+    },
+    openrouter: { response_cache: true },
+  }, {
+    providerOverridesJson: JSON.stringify({
+      anthropic: {
+        request_timeout_seconds: 45,
+        stale_timeout_seconds: 300,
+        custom_flag: 'keep-provider',
+        models: {
+          'claude-opus-4.6': {
+            timeout_seconds: 900,
+            stale_timeout_seconds: 1200,
+            custom_flag: 'keep-model',
+          },
+        },
+      },
+      'openai-codex': {
+        models: {
+          'gpt-5.4': {
+            stale_timeout_seconds: 1800,
+          },
+        },
+      },
+    }),
+  })
+
+  assert.deepEqual(next.model, { provider: 'openrouter' })
+  assert.deepEqual(next.openrouter, { response_cache: true })
+  assert.equal(next.providers.anthropic.request_timeout_seconds, 45)
+  assert.equal(next.providers.anthropic.stale_timeout_seconds, 300)
+  assert.equal(next.providers.anthropic.custom_flag, 'keep-provider')
+  assert.equal(next.providers.anthropic.models['claude-opus-4.6'].timeout_seconds, 900)
+  assert.equal(next.providers.anthropic.models['claude-opus-4.6'].stale_timeout_seconds, 1200)
+  assert.equal(next.providers.anthropic.models['claude-opus-4.6'].custom_flag, 'keep-model')
+  assert.equal(next.providers['openai-codex'].models['gpt-5.4'].stale_timeout_seconds, 1800)
+})
+
+test('Hermes provider 覆盖配置保存空对象会移除 providers', () => {
+  const next = mergeHermesProviderOverridesConfig({
+    providers: {
+      anthropic: { request_timeout_seconds: 30 },
+    },
+    streaming: { enabled: true },
+  }, {
+    providerOverridesJson: '{}',
+  })
+
+  assert.equal(next.providers, undefined)
+  assert.deepEqual(next.streaming, { enabled: true })
+})
+
+test('Hermes provider 覆盖配置保存会拒绝非法 JSON、名称和超时', () => {
+  assert.throws(
+    () => mergeHermesProviderOverridesConfig({}, { providerOverridesJson: '[' }),
+    /providers JSON/,
+  )
+  assert.throws(
+    () => mergeHermesProviderOverridesConfig({}, { providerOverridesJson: JSON.stringify({ 'bad provider': { request_timeout_seconds: 30 } }) }),
+    /providers\.bad provider/,
+  )
+  assert.throws(
+    () => mergeHermesProviderOverridesConfig({}, { providerOverridesJson: JSON.stringify({ anthropic: { request_timeout_seconds: 0 } }) }),
+    /providers\.anthropic\.request_timeout_seconds/,
+  )
+  assert.throws(
+    () => mergeHermesProviderOverridesConfig({}, { providerOverridesJson: JSON.stringify({ anthropic: { models: { '../secret': { timeout_seconds: 30 } } } }) }),
+    /providers\.anthropic\.models\.\.\.\/secret/,
+  )
+  assert.throws(
+    () => mergeHermesProviderOverridesConfig({}, { providerOverridesJson: JSON.stringify({ anthropic: { models: { opus: { timeout_seconds: 'slow' } } } }) }),
+    /providers\.anthropic\.models\.opus\.timeout_seconds/,
+  )
+})