feat(providers): add Volcengine Ark usage query with AK/SK signing

Query coding-plan / agent-plan usage for Volcengine Ark via the
control-plane OpenAPI (open.volcengineapi.com), which requires
account-level AccessKey signing rather than the inference API key.

- Implement Volcengine Signature V4 (an AWS SigV4 variant: fixed
  canonical header order, "HMAC-SHA256" algorithm without the AWS4
  prefix, scope ending in "request", service "ark") in
  services/coding_plan.rs
- Auto-detect the plan by probing GetAFPUsage (Agent Plan, AFP
  five-hour/weekly/monthly quotas) first, falling back to
  GetCodingPlanUsage (Coding Plan, session/weekly/monthly percentages);
  a single credential covers whichever plan the account holds
- Parse the real response shape: the window label lives in the `Level`
  field; guard ResetTimestamp <= 0 (session returns -1)
- Store account-level credentials on UsageScript (accessKeyId /
  secretAccessKey), threaded through both the test command and the
  TOKEN_PLAN auto-refresh path
- Add an independent AK/SK input block with a detailed hint pointing to
  the Volcengine console -> API Access Keys
- Add the `monthly` tier label (frontend TIER_I18N_KEYS + tray
  TIER_LABEL_GROUPS + subscription service)
- Sync zh / en / ja / zh-TW locales and the usage-query docs

docs/user-manual/en/2-providers/2.5-usage-query.md

@@ -43,7 +43,7 @@ v3.13.0 provides **ready-to-use built-in templates** for the following categorie
 
 | Category           | Covered Providers                                         | Template Type                   |
 | ------------------ | --------------------------------------------------------- | ------------------------------- |
-| Token Plan         | Kimi / Zhipu GLM / MiniMax                                | Plan quota (with usage progress) |
+| Token Plan         | Kimi / Zhipu GLM / MiniMax / Volcengine                   | Plan quota (with usage progress) |
 | Third-party balance| DeepSeek / StepFun / SiliconFlow / OpenRouter / Novita AI | Official balance query          |
 
 > **Tip**: Beyond these built-in templates, for uncovered providers you can use the **custom script** approach (see below) to write your own query logic.

docs/user-manual/ja/2-providers/2.5-usage-query.md

@@ -43,7 +43,7 @@ v3.13.0 では以下のカテゴリに **すぐに使える内蔵テンプレー
 
 | カテゴリ        | 対象プロバイダー                                          | テンプレートタイプ        |
 | --------------- | --------------------------------------------------------- | ------------------------- |
-| Token Plan      | Kimi / Zhipu GLM / MiniMax                                | プランクォータ（使用進捗付き） |
+| Token Plan      | Kimi / Zhipu GLM / MiniMax / Volcengine（火山方舟）       | プランクォータ（使用進捗付き） |
 | 第三者残高      | DeepSeek / StepFun / SiliconFlow / OpenRouter / Novita AI | 公式残高クエリ            |
 
 > **ヒント**：上記の内蔵テンプレート以外で対象外のプロバイダーには、**カスタムスクリプト** 方式（下記参照）で独自のクエリロジックを記述できます。

docs/user-manual/zh/2-providers/2.5-usage-query.md

@@ -43,7 +43,7 @@ v3.13.0 为以下类别提供了**开箱即用的内置模板**，启用后无
 
 | 类别       | 覆盖供应商                                                | 模板类型                |
 | ---------- | --------------------------------------------------------- | ----------------------- |
-| Token Plan | Kimi / Zhipu GLM / MiniMax                                | 套餐配额（带使用进度）  |
+| Token Plan | Kimi / Zhipu GLM / MiniMax / 火山方舟                      | 套餐配额（带使用进度）  |
 | 第三方余额 | DeepSeek / StepFun / SiliconFlow / OpenRouter / Novita AI | 官方余额查询            |
 
 > 💡 除了以上内置模板外，对未被覆盖的供应商，你可以使用**自定义脚本**方式（见下文）编写自己的查询逻辑。

src-tauri/src/commands/coding_plan.rs

@@ -4,6 +4,15 @@ use crate::services::subscription::SubscriptionQuota;
 pub async fn get_coding_plan_quota(
     base_url: String,
     api_key: String,
+    // 火山方舟用控制面 AK/SK 签名查询用量；其他供应商不传，沿用 api_key。
+    access_key_id: Option<String>,
+    secret_access_key: Option<String>,
 ) -> Result<SubscriptionQuota, String> {
-    crate::services::coding_plan::get_coding_plan_quota(&base_url, &api_key).await
+    crate::services::coding_plan::get_coding_plan_quota(
+        &base_url,
+        &api_key,
+        access_key_id.as_deref(),
+        secret_access_key.as_deref(),
+    )
+    .await
 }

src-tauri/src/commands/provider.rs

@@ -514,7 +514,17 @@ async fn query_provider_usage_inner(
         let (base_url, api_key) =
             resolve_coding_plan_credentials(&app_type, provider, usage_script);
 
-        let quota = crate::services::coding_plan::get_coding_plan_quota(&base_url, &api_key)
+        // 火山方舟用账号 AK/SK 签名查询用量（存于 usage_script，与推理 api_key 分离）；
+        // 其他供应商为 None，service 层沿用 api_key。
+        let access_key_id = usage_script.and_then(|s| s.access_key_id.clone());
+        let secret_access_key = usage_script.and_then(|s| s.secret_access_key.clone());
+
+        let quota = crate::services::coding_plan::get_coding_plan_quota(
+            &base_url,
+            &api_key,
+            access_key_id.as_deref(),
+            secret_access_key.as_deref(),
+        )
         .await
         .map_err(|e| format!("Failed to query coding plan: {e}"))?;
 
@@ -1086,6 +1096,8 @@ mod native_query_credentials_tests {
             template_type: Some("token_plan".to_string()),
             auto_query_interval: None,
             coding_plan_provider: coding_plan_provider.map(str::to_string),
+            access_key_id: None,
+            secret_access_key: None,
         }
     }
 

src-tauri/src/deeplink/provider.rs

@@ -235,6 +235,8 @@ fn build_provider_meta(request: &DeepLinkImportRequest) -> Result<Option<Provide
         template_type: None, // Deeplink providers don't specify template type (will use backward compatibility logic)
         auto_query_interval: request.usage_auto_interval,
         coding_plan_provider: None,
+        access_key_id: None,
+        secret_access_key: None,
     };
 
     Ok(Some(ProviderMeta {

src-tauri/src/provider.rs

@@ -251,6 +251,14 @@ pub struct UsageScript {
     #[serde(skip_serializing_if = "Option::is_none")]
     #[serde(rename = "codingPlanProvider")]
     pub coding_plan_provider: Option<String>,
+    /// 火山方舟控制面 OpenAPI 的 AccessKey ID（用量查询签名用，与推理 Key 是两套凭据）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "accessKeyId")]
+    pub access_key_id: Option<String>,
+    /// 火山方舟控制面 OpenAPI 的 SecretAccessKey（同上）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "secretAccessKey")]
+    pub secret_access_key: Option<String>,
 }
 
 /// 用量数据

src-tauri/src/services/coding_plan.rs

@@ -4,7 +4,7 @@
 //! 复用 subscription 模块的 SubscriptionQuota / QuotaTier 类型。
 
 use super::subscription::{
-    CredentialStatus, QuotaTier, SubscriptionQuota, TIER_FIVE_HOUR, TIER_WEEKLY_LIMIT,
+    CredentialStatus, QuotaTier, SubscriptionQuota, TIER_FIVE_HOUR, TIER_MONTHLY, TIER_WEEKLY_LIMIT,
 };
 use std::time::{SystemTime, UNIX_EPOCH};
 
@@ -17,6 +17,9 @@ enum CodingPlanProvider {
     MiniMaxCn,
     MiniMaxEn,
     ZenMux,
+    /// 火山方舟 Agent Plan / Coding Plan（base_url 形如
+    /// `https://ark.cn-beijing.volces.com/api/coding[/v3]`）。
+    Volcengine,
 }
 
 fn detect_provider(base_url: &str) -> Option<CodingPlanProvider> {
@@ -33,6 +36,10 @@ fn detect_provider(base_url: &str) -> Option<CodingPlanProvider> {
         Some(CodingPlanProvider::MiniMaxEn)
     } else if url.contains("zenmux") {
         Some(CodingPlanProvider::ZenMux)
+    } else if url.contains("volces.com/api/coding") {
+        // 仅匹配 Coding/Agent Plan 入口；DouBaoSeed 按量付费走 /api/v3 与
+        // /api/compatible，没有套餐额度，不在此命中。
+        Some(CodingPlanProvider::Volcengine)
     } else {
         None
     }
@@ -59,6 +66,10 @@ fn extract_reset_time(value: &serde_json::Value) -> Option<String> {
         return Some(s.to_string());
     }
     if let Some(n) = value.as_i64() {
+        // 0/负时间戳（如火山 session 无活跃窗口回 -1）视为无重置时间
+        if n <= 0 {
+            return None;
+        }
         // 区分秒和毫秒：秒级时间戳 < 1e12，毫秒 >= 1e12
         let ms = if n < 1_000_000_000_000 { n * 1000 } else { n };
         return millis_to_iso8601(ms);
@@ -652,43 +663,517 @@ fn parse_minimax_tiers(body: &serde_json::Value) -> Vec<QuotaTier> {
     tiers
 }
 
+// ── 火山方舟 Agent Plan / Coding Plan ───────────────────────
+//
+// 与 Kimi/MiniMax（数据面 Bearer 余额接口）不同，火山用量接口是**控制面
+// OpenAPI**：统一网关 `open.volcengineapi.com`（**不是**数据面推理域名
+// `ark.cn-beijing.volces.com`），形如
+// `POST https://open.volcengineapi.com/?Action=...&Version=2024-01-01&Region=cn-beijing`，
+// **强制火山引擎签名 V4（AK/SK）**——实测复用推理 Bearer Key 会被网关以
+// `400 InvalidAuthorization` 拒绝（格式层拒绝，非权限问题）。因此用户需在用量查询
+// 里另填火山账号的 AccessKey ID + Secret（与推理 Key 是两套凭据）。两个 plan 用
+// 同一份 AK/SK，故鉴权类错误直接停、不再试另一个 plan。
+//
+// 自动探测：先调 `GetAFPUsage`（Agent Plan，回绝对额度 Quota/Used），未订阅再调
+// `GetCodingPlanUsage`（Coding Plan，回百分比）。
+
+/// 控制面 OpenAPI 统一网关（区别于数据面推理域名 ark.cn-beijing.volces.com）。
+const VOLCENGINE_OPENAPI_HOST: &str = "open.volcengineapi.com";
+const VOLCENGINE_API_VERSION: &str = "2024-01-01";
+/// ark 控制面 OpenAPI 的默认 Region（Agent/Coding Plan 目前在 cn-beijing）。
+const VOLCENGINE_DEFAULT_REGION: &str = "cn-beijing";
+
+/// 单次 OpenAPI 调用的归类结果。
+enum VolcCall {
+    /// 2xx 且 JSON 可解析、无 OpenAPI 级错误（业务 Result 仍可能为空=未订阅）。
+    Body(serde_json::Value),
+    /// 硬鉴权失败（HTTP 401/403 或 AccessDenied/Signature 等错误码）——两个 plan
+    /// 共用凭据，命中即停。
+    Auth(String),
+    /// 网络 / 非鉴权 HTTP 错误 / 解析失败——记录后可继续尝试另一个 plan。
+    Soft(String),
+}
+
+/// 从数据面 base_url 提取控制面 OpenAPI 所需的 Region（如
+/// `ark.cn-beijing.volces.com` → `cn-beijing`）；无法识别时回落 cn-beijing。
+/// 控制面 Host 是固定网关（`VOLCENGINE_OPENAPI_HOST`），不随 base_url 变化。
+fn volcengine_region(base_url: &str) -> String {
+    let host = base_url
+        .split_once("://")
+        .map(|(_, rest)| rest)
+        .unwrap_or(base_url)
+        .split('/')
+        .next()
+        .unwrap_or("");
+    host.split('.')
+        .find(|p| p.starts_with("cn-") || p.starts_with("ap-"))
+        .map(|p| p.to_string())
+        .unwrap_or_else(|| VOLCENGINE_DEFAULT_REGION.to_string())
+}
+
+/// 判断 OpenAPI 错误码是否属于鉴权类（需要硬停并提示换 AK/SK）。
+fn volcengine_is_auth_error_code(code: &str) -> bool {
+    let c = code.to_lowercase();
+    c.contains("auth")
+        || c.contains("signature")
+        || c.contains("accessdenied")
+        || c.contains("denied")
+        || c.contains("unauthorized")
+        || c.contains("forbidden")
+        || c.contains("credential")
+        || c.contains("token")
+}
+
+/// 提取火山 OpenAPI 响应里的 `ResponseMetadata.Error`（或顶层 `Error`）。
+fn volcengine_response_error(body: &serde_json::Value) -> Option<(String, String)> {
+    let err = body
+        .get("ResponseMetadata")
+        .and_then(|m| m.get("Error"))
+        .or_else(|| body.get("Error"))?;
+    let code = err
+        .get("Code")
+        .and_then(|v| v.as_str())
+        .unwrap_or("")
+        .to_string();
+    let msg = err
+        .get("Message")
+        .and_then(|v| v.as_str())
+        .unwrap_or("")
+        .to_string();
+    if code.is_empty() && msg.is_empty() {
+        None
+    } else {
+        Some((code, msg))
+    }
+}
+
+/// 鉴权失败时的引导文案，附加在错误后。
+const VOLCENGINE_AKSK_HINT: &str =
+    "Check the AccessKey ID / Secret are correct and the account has Ark usage-query (OpenAPI) permission.";
+
+// ── 火山引擎签名 V4（AK/SK）─────────────────────────────────
+//
+// 算法是 AWS SigV4 的火山变体（对照官方 volc-openapi-demos/signature/java/Sign.java）。
+// **两处致命差异，照搬 s3.rs 的标准 SigV4 会签名失败**：
+//   1. canonical headers 与 SignedHeaders 用**固定顺序**
+//      `host;x-date;x-content-sha256;content-type`（**不按字母序**，s3.rs 是字母序）；
+//   2. algorithm 串 `HMAC-SHA256`（无 `AWS4` 前缀）、credential scope 结尾 `request`
+//      （非 `aws4_request`）、签名密钥 `kDate=HMAC(SK, date)`（SK 不加 `AWS4` 前缀）。
+// canonical query 仍按 key 字母序（与标准 SigV4 一致）；service=`ark`、POST、空 body。
+
+const VOLCENGINE_SERVICE: &str = "ark";
+const VOLCENGINE_CONTENT_TYPE: &str = "application/json; charset=utf-8";
+const VOLCENGINE_SIGNED_HEADERS: &str = "host;x-date;x-content-sha256;content-type";
+
+fn volc_hmac_sha256(key: &[u8], data: &[u8]) -> Vec<u8> {
+    use hmac::{Hmac, Mac};
+    type HmacSha256 = Hmac<sha2::Sha256>;
+    let mut mac = HmacSha256::new_from_slice(key).expect("HMAC accepts any key length");
+    mac.update(data);
+    mac.finalize().into_bytes().to_vec()
+}
+
+fn volc_sha256_hex(data: &[u8]) -> String {
+    use sha2::{Digest, Sha256};
+    format!("{:x}", Sha256::digest(data))
+}
+
+/// RFC3986 unreserved 之外全部按 `%XX` 编码（用于 canonical query string）。
+fn volc_uri_encode(input: &str) -> String {
+    let mut out = String::with_capacity(input.len());
+    for byte in input.bytes() {
+        match byte {
+            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'_' | b'.' | b'~' => {
+                out.push(byte as char)
+            }
+            _ => {
+                use std::fmt::Write;
+                let _ = write!(out, "%{byte:02X}");
+            }
+        }
+    }
+    out
+}
+
+/// 构造按 key 字母序排序、逐段 URL 编码的 canonical query string。
+/// 同一份字符串既用于签名也用于实际请求 URL，保证两者完全一致。
+fn volcengine_canonical_query(action: &str, region: &str) -> String {
+    let mut pairs = [
+        ("Action", action),
+        ("Region", region),
+        ("Version", VOLCENGINE_API_VERSION),
+    ];
+    pairs.sort_by(|a, b| a.0.cmp(b.0));
+    pairs
+        .iter()
+        .map(|(k, v)| format!("{}={}", volc_uri_encode(k), volc_uri_encode(v)))
+        .collect::<Vec<_>>()
+        .join("&")
+}
+
+/// 生成火山引擎签名 V4 的鉴权头，返回 `(Authorization, X-Date, X-Content-Sha256)`，
+/// 三者都要塞进请求头；`canonical_query` 必须与实际请求 URL 的 query 完全一致。
+/// `now` 作参数传入便于写确定性单测。
+fn volcengine_sign(
+    access_key_id: &str,
+    secret_access_key: &str,
+    region: &str,
+    canonical_query: &str,
+    body: &[u8],
+    now: chrono::DateTime<chrono::Utc>,
+) -> (String, String, String) {
+    let x_date = now.format("%Y%m%dT%H%M%SZ").to_string();
+    let short_date = now.format("%Y%m%d").to_string();
+    let x_content_sha256 = volc_sha256_hex(body);
+
+    // 固定顺序 canonical headers（火山特有，**不排序**）。
+    let canonical_headers = format!(
+        "host:{VOLCENGINE_OPENAPI_HOST}\nx-date:{x_date}\nx-content-sha256:{x_content_sha256}\ncontent-type:{VOLCENGINE_CONTENT_TYPE}\n"
+    );
+    let canonical_request = format!(
+        "POST\n/\n{canonical_query}\n{canonical_headers}\n{VOLCENGINE_SIGNED_HEADERS}\n{x_content_sha256}"
+    );
+
+    let credential_scope = format!("{short_date}/{region}/{VOLCENGINE_SERVICE}/request");
+    let string_to_sign = format!(
+        "HMAC-SHA256\n{x_date}\n{credential_scope}\n{}",
+        volc_sha256_hex(canonical_request.as_bytes())
+    );
+
+    // 签名密钥派生：kDate=HMAC(SK, date)（SK **不加** AWS4 前缀），终止串 `request`。
+    let k_date = volc_hmac_sha256(secret_access_key.as_bytes(), short_date.as_bytes());
+    let k_region = volc_hmac_sha256(&k_date, region.as_bytes());
+    let k_service = volc_hmac_sha256(&k_region, VOLCENGINE_SERVICE.as_bytes());
+    let k_signing = volc_hmac_sha256(&k_service, b"request");
+    let signature: String = volc_hmac_sha256(&k_signing, string_to_sign.as_bytes())
+        .iter()
+        .map(|b| format!("{b:02x}"))
+        .collect();
+
+    let authorization = format!(
+        "HMAC-SHA256 Credential={access_key_id}/{credential_scope}, SignedHeaders={VOLCENGINE_SIGNED_HEADERS}, Signature={signature}"
+    );
+    (authorization, x_date, x_content_sha256)
+}
+
+async fn volcengine_openapi_call(
+    region: &str,
+    access_key_id: &str,
+    secret_access_key: &str,
+    action: &str,
+) -> VolcCall {
+    let client = crate::proxy::http_client::get();
+    // canonical query 同时用于签名与实际 URL，确保两者逐字一致（否则签名不匹配）。
+    let canonical_query = volcengine_canonical_query(action, region);
+    let url = format!("https://{VOLCENGINE_OPENAPI_HOST}/?{canonical_query}");
+    let body: &[u8] = b"";
+    let (authorization, x_date, x_content_sha256) = volcengine_sign(
+        access_key_id,
+        secret_access_key,
+        region,
+        &canonical_query,
+        body,
+        chrono::Utc::now(),
+    );
+
+    let resp = client
+        .post(&url)
+        .header("X-Date", x_date)
+        .header("X-Content-Sha256", x_content_sha256)
+        .header("Content-Type", VOLCENGINE_CONTENT_TYPE)
+        .header("Authorization", authorization)
+        .body(body.to_vec())
+        .timeout(std::time::Duration::from_secs(15))
+        .send()
+        .await;
+
+    let resp = match resp {
+        Ok(r) => r,
+        Err(e) => return VolcCall::Soft(format!("Network error: {e}")),
+    };
+
+    let status = resp.status();
+    if status == reqwest::StatusCode::UNAUTHORIZED || status == reqwest::StatusCode::FORBIDDEN {
+        return VolcCall::Auth(format!(
+            "Authentication failed (HTTP {status}). {VOLCENGINE_AKSK_HINT}"
+        ));
+    }
+    if !status.is_success() {
+        // 火山 OpenAPI 网关对签名/凭据类错误常返 4xx（多为 HTTP 400）并携带与 200
+        // 路径相同的 ResponseMetadata.Error 信封，而非 401/403。这里也解析信封，让
+        // Bearer 被拒时仍能给出 AK/SK 引导并标记凭据失效，而不是当成普通 API 错误。
+        let raw = resp.text().await.unwrap_or_default();
+        if let Ok(body) = serde_json::from_str::<serde_json::Value>(&raw) {
+            if let Some((code, msg)) = volcengine_response_error(&body) {
+                if volcengine_is_auth_error_code(&code) {
+                    return VolcCall::Auth(format!(
+                        "Authentication failed (HTTP {status}, {code}): {msg}. {VOLCENGINE_AKSK_HINT}"
+                    ));
+                }
+                return VolcCall::Soft(format!("API error (HTTP {status}, {code}): {msg}"));
+            }
+        }
+        return VolcCall::Soft(format!("API error (HTTP {status}): {raw}"));
+    }
+
+    let body: serde_json::Value = match resp.json().await {
+        Ok(v) => v,
+        Err(e) => return VolcCall::Soft(format!("Failed to parse response: {e}")),
+    };
+
+    // 火山 OpenAPI 业务错误常以 200 + ResponseMetadata.Error 返回。
+    if let Some((code, msg)) = volcengine_response_error(&body) {
+        if volcengine_is_auth_error_code(&code) {
+            return VolcCall::Auth(format!(
+                "Authentication failed ({code}): {msg}. {VOLCENGINE_AKSK_HINT}"
+            ));
+        }
+        return VolcCall::Soft(format!("API error ({code}): {msg}"));
+    }
+
+    VolcCall::Body(body)
+}
+
+/// 解析 `GetAFPUsage` 的 `Result` 为 tier 列表。
+///
+/// 展示 5h / 周 / 月三个窗口（与控制台一致）；`AFPDaily` 被官方控制台隐藏
+/// （其 Quota 常高于周上限，属历史默认值而非强制限额），故跳过。
+/// `Quota`/`Used` 是绝对 AFP 值，已用百分比 = Used/Quota×100；`Quota<=0` 视为
+/// 该窗口未订阅/未启用，跳过——也用于把"已鉴权但无 Agent Plan"识别为空结果，
+/// 从而回落到 Coding Plan 探测。
+fn parse_afp_tiers(result: &serde_json::Value) -> Vec<QuotaTier> {
+    let mut tiers = Vec::new();
+    for (key, name) in [
+        ("AFPFiveHour", TIER_FIVE_HOUR),
+        ("AFPWeekly", TIER_WEEKLY_LIMIT),
+        ("AFPMonthly", TIER_MONTHLY),
+    ] {
+        let Some(win) = result.get(key) else { continue };
+        let quota = win.get("Quota").and_then(parse_f64).unwrap_or(0.0);
+        if quota <= 0.0 {
+            continue;
+        }
+        let used = win.get("Used").and_then(parse_f64).unwrap_or(0.0);
+        // 已用百分比；不做范围裁剪，与 parse_zhipu_token_tiers/parse_minimax_tiers
+        // 的约定一致（下游渲染层负责显示策略）。
+        let utilization = used / quota * 100.0;
+        let resets_at = win.get("ResetTime").and_then(extract_reset_time);
+        tiers.push(QuotaTier {
+            name: name.to_string(),
+            utilization,
+            resets_at,
+            used_value_usd: None,
+            max_value_usd: None,
+        });
+    }
+    tiers
+}
+
+/// 把 `GetCodingPlanUsage` 的 window 标签归一到 tier 名。
+fn volcengine_coding_window(label: &str) -> Option<&'static str> {
+    match label.to_lowercase().as_str() {
+        "session" | "5h" | "fivehour" | "five_hour" | "rolling_5h" => Some(TIER_FIVE_HOUR),
+        "weekly" | "week" | "7d" => Some(TIER_WEEKLY_LIMIT),
+        "monthly" | "month" => Some(TIER_MONTHLY),
+        _ => None,
+    }
+}
+
+/// 解析 `GetCodingPlanUsage` 的 `Result` 为 tier 列表（防御式）。
+///
+/// 该接口官方文档未给出逐字段规格，依据官方 ark-cli 描述：回 session/weekly/
+/// monthly 窗口、**只给百分比**（已用）、重置时间是秒级。这里宽松匹配
+/// `QuotaUsage`/`Usages`/`Details` 数组及多种字段名，命中即用、未命中跳过。
+fn parse_coding_plan_tiers(result: &serde_json::Value) -> Vec<QuotaTier> {
+    let mut tiers = Vec::new();
+    let arr = result
+        .get("QuotaUsage")
+        .and_then(|v| v.as_array())
+        .or_else(|| result.get("Usages").and_then(|v| v.as_array()))
+        .or_else(|| result.get("Details").and_then(|v| v.as_array()));
+    let Some(arr) = arr else { return tiers };
+
+    for item in arr {
+        // 真实字段是 `Level`（实测 2026-06-21：session/weekly/monthly）；其余作防御式 fallback。
+        let label = item
+            .get("Level")
+            .and_then(|v| v.as_str())
+            .or_else(|| item.get("Type").and_then(|v| v.as_str()))
+            .or_else(|| item.get("Period").and_then(|v| v.as_str()))
+            .or_else(|| item.get("Label").and_then(|v| v.as_str()))
+            .or_else(|| item.get("Window").and_then(|v| v.as_str()))
+            .unwrap_or("");
+        let Some(name) = volcengine_coding_window(label) else {
+            continue;
+        };
+        let utilization = item
+            .get("Percent")
+            .and_then(parse_f64)
+            .or_else(|| item.get("UsedPercent").and_then(parse_f64))
+            .or_else(|| item.get("UsagePercent").and_then(parse_f64))
+            .unwrap_or(0.0);
+        // 兼容秒/毫秒/字符串（extract_reset_time 内部已区分秒与毫秒）。
+        let resets_at = item
+            .get("ResetTime")
+            .or_else(|| item.get("ResetTimestamp"))
+            .and_then(extract_reset_time);
+        tiers.push(QuotaTier {
+            name: name.to_string(),
+            utilization,
+            resets_at,
+            used_value_usd: None,
+            max_value_usd: None,
+        });
+    }
+    tiers
+}
+
+fn volcengine_success(tiers: Vec<QuotaTier>, plan: Option<String>) -> SubscriptionQuota {
+    SubscriptionQuota {
+        tool: "coding_plan".to_string(),
+        credential_status: CredentialStatus::Valid,
+        credential_message: plan,
+        success: true,
+        tiers,
+        extra_usage: None,
+        error: None,
+        queried_at: Some(now_millis()),
+    }
+}
+
+fn volcengine_auth_error(detail: String) -> SubscriptionQuota {
+    SubscriptionQuota {
+        tool: "coding_plan".to_string(),
+        credential_status: CredentialStatus::Expired,
+        credential_message: Some("Invalid API key".to_string()),
+        success: false,
+        tiers: vec![],
+        extra_usage: None,
+        error: Some(detail),
+        queried_at: Some(now_millis()),
+    }
+}
+
+async fn query_volcengine(
+    base_url: &str,
+    access_key_id: &str,
+    secret_access_key: &str,
+) -> SubscriptionQuota {
+    let region = volcengine_region(base_url);
+    let mut soft_errors: Vec<String> = Vec::new();
+    // 2xx + 无 Error 信封但解析不出额度时，截断原始响应用于诊断（区分"真没订阅"
+    // 与"字段名/包裹层猜错"）。签名若不通会走 Auth/Soft 分支，到不了这里。
+    let mut empty_responses: Vec<String> = Vec::new();
+    let summarize = |action: &str, body: &serde_json::Value| -> String {
+        let raw: String = body.to_string().chars().take(700).collect();
+        format!("{action}={raw}")
+    };
+
+    // 1) Agent Plan：GetAFPUsage
+    match volcengine_openapi_call(&region, access_key_id, secret_access_key, "GetAFPUsage").await {
+        VolcCall::Auth(detail) => return volcengine_auth_error(detail),
+        VolcCall::Soft(detail) => soft_errors.push(format!("GetAFPUsage: {detail}")),
+        VolcCall::Body(body) => {
+            let result = body.get("Result").unwrap_or(&body);
+            let tiers = parse_afp_tiers(result);
+            if !tiers.is_empty() {
+                let plan = result
+                    .get("PlanType")
+                    .and_then(|v| v.as_str())
+                    .map(str::trim)
+                    .filter(|s| !s.is_empty())
+                    .map(|s| format!("Agent Plan {s}"));
+                return volcengine_success(tiers, plan);
+            }
+            empty_responses.push(summarize("GetAFPUsage", &body));
+        }
+    }
+
+    // 2) Coding Plan：GetCodingPlanUsage
+    match volcengine_openapi_call(
+        &region,
+        access_key_id,
+        secret_access_key,
+        "GetCodingPlanUsage",
+    )
+    .await
+    {
+        VolcCall::Auth(detail) => return volcengine_auth_error(detail),
+        VolcCall::Soft(detail) => soft_errors.push(format!("GetCodingPlanUsage: {detail}")),
+        VolcCall::Body(body) => {
+            let result = body.get("Result").unwrap_or(&body);
+            let tiers = parse_coding_plan_tiers(result);
+            if !tiers.is_empty() {
+                return volcengine_success(tiers, Some("Coding Plan".to_string()));
+            }
+            empty_responses.push(summarize("GetCodingPlanUsage", &body));
+        }
+    }
+
+    if !soft_errors.is_empty() {
+        make_error(soft_errors.join("; "))
+    } else if !empty_responses.is_empty() {
+        // 签名已通过、请求到达业务层，但响应里没有可解析的额度。带上原始响应，
+        // 便于核对真实字段名/包裹层，或确认确实未订阅。
+        make_error(format!(
+            "No active subscription found (signature OK). Raw: {}",
+            empty_responses.join(" || ")
+        ))
+    } else {
+        make_error(
+            "No active Agent Plan or Coding Plan subscription found for this credential"
+                .to_string(),
+        )
+    }
+}
+
 // ── 公开入口 ────────────────────────────────────────────────
 
+/// 构造"凭据缺失 / 域名未命中"的失败结果（NotFound 状态 + 明确错误文案）。
+fn coding_plan_not_found(error: &str) -> SubscriptionQuota {
+    SubscriptionQuota {
+        tool: "coding_plan".to_string(),
+        credential_status: CredentialStatus::NotFound,
+        credential_message: None,
+        success: false,
+        tiers: vec![],
+        extra_usage: None,
+        error: Some(error.to_string()),
+        queried_at: None,
+    }
+}
+
 pub async fn get_coding_plan_quota(
     base_url: &str,
     api_key: &str,
+    access_key_id: Option<&str>,
+    secret_access_key: Option<&str>,
 ) -> Result<SubscriptionQuota, String> {
-    if api_key.trim().is_empty() {
-        return Ok(SubscriptionQuota {
-            tool: "coding_plan".to_string(),
-            credential_status: CredentialStatus::NotFound,
-            credential_message: None,
-            success: false,
-            tiers: vec![],
-            extra_usage: None,
-            // 与 balance::get_balance 一致：给出明确错误，避免 footer 显示无信息的失败
-            error: Some("API key is empty".to_string()),
-            queried_at: None,
-        });
-    }
-
     let provider = match detect_provider(base_url) {
         Some(p) => p,
-        None => {
-            return Ok(SubscriptionQuota {
-                tool: "coding_plan".to_string(),
-                credential_status: CredentialStatus::NotFound,
-                credential_message: None,
-                success: false,
-                tiers: vec![],
-                extra_usage: None,
         // 域名未命中已知套餐供应商（如第三方中转站）：给出明确错误而非静默失败
-                error: Some("Unknown coding plan provider".to_string()),
-                queried_at: None,
-            });
-        }
+        None => return Ok(coding_plan_not_found("Unknown coding plan provider")),
     };
 
+    // 火山方舟走控制面 AK/SK 签名（区别于其他供应商的数据面 Bearer api_key），凭据
+    // 校验与查询路径都不同，单独分支提前处理。
+    if let CodingPlanProvider::Volcengine = provider {
+        let ak = access_key_id.unwrap_or("").trim();
+        let sk = secret_access_key.unwrap_or("").trim();
+        if ak.is_empty() || sk.is_empty() {
+            return Ok(coding_plan_not_found(
+                "Volcengine usage query needs the account AccessKey ID + Secret (not the inference API key)",
+            ));
+        }
+        return Ok(query_volcengine(base_url, ak, sk).await);
+    }
+
+    // 其余供应商：数据面 Bearer api_key。
+    // 与 balance::get_balance 一致：给出明确错误，避免 footer 显示无信息的失败
+    if api_key.trim().is_empty() {
+        return Ok(coding_plan_not_found("API key is empty"));
+    }
+
     let quota = match provider {
         CodingPlanProvider::Kimi => query_kimi(api_key).await,
         CodingPlanProvider::ZhipuCn | CodingPlanProvider::ZhipuEn => {
@@ -697,6 +1182,10 @@ pub async fn get_coding_plan_quota(
         CodingPlanProvider::MiniMaxCn => query_minimax(api_key, true).await,
         CodingPlanProvider::MiniMaxEn => query_minimax(api_key, false).await,
         CodingPlanProvider::ZenMux => query_zenmux(base_url, api_key).await,
+        // 火山已在上面的 AK/SK 分支提前返回，此处不可达。
+        CodingPlanProvider::Volcengine => {
+            unreachable!("volcengine handled via AK/SK branch above")
+        }
     };
 
     Ok(quota)
@@ -705,7 +1194,9 @@ pub async fn get_coding_plan_quota(
 #[cfg(test)]
 mod tests {
     use super::{
-        parse_minimax_tiers, parse_zhipu_token_tiers, zhipu_quota_base, TIER_FIVE_HOUR,
+        parse_afp_tiers, parse_coding_plan_tiers, parse_minimax_tiers, parse_zhipu_token_tiers,
+        volcengine_canonical_query, volcengine_is_auth_error_code, volcengine_region,
+        volcengine_response_error, volcengine_sign, zhipu_quota_base, TIER_FIVE_HOUR, TIER_MONTHLY,
         TIER_WEEKLY_LIMIT,
     };
     use serde_json::json;
@@ -1135,4 +1626,184 @@ mod tests {
             "https://open.bigmodel.cn"
         );
     }
+
+    // ── 火山方舟 Agent Plan / Coding Plan ──
+
+    #[test]
+    fn volcengine_afp_three_windows_from_official_example() {
+        // 官方文档 GetAFPUsage 返回示例（逐字）：5h 25% / weekly 30% / monthly
+        // 42.525%；AFPDaily 被控制台隐藏，应跳过。
+        let result = json!({
+            "PlanType": "Large",
+            "AFPFiveHour": { "Quota": 50.0,   "Used": 12.5,  "SubscribeTime": 1778788800000_i64, "ResetTime": 1778806800000_i64 },
+            "AFPDaily":    { "Quota": 100.0,  "Used": 22.5,  "SubscribeTime": 1778716800000_i64, "ResetTime": 1778803200000_i64 },
+            "AFPWeekly":   { "Quota": 500.0,  "Used": 150.0, "SubscribeTime": 1778457600000_i64, "ResetTime": 1779062400000_i64 },
+            "AFPMonthly":  { "Quota": 2000.0, "Used": 850.5, "SubscribeTime": 1777939200000_i64, "ResetTime": 1780531200000_i64 }
+        });
+        let tiers = parse_afp_tiers(&result);
+        assert_eq!(tiers.len(), 3, "daily 应被跳过，只剩 5h/周/月");
+        assert_eq!(tiers[0].name, TIER_FIVE_HOUR);
+        assert!((tiers[0].utilization - 25.0).abs() < 1e-9);
+        assert!(tiers[0].resets_at.is_some());
+        assert_eq!(tiers[1].name, TIER_WEEKLY_LIMIT);
+        assert!((tiers[1].utilization - 30.0).abs() < 1e-9);
+        assert_eq!(tiers[2].name, TIER_MONTHLY);
+        assert!((tiers[2].utilization - 42.525).abs() < 1e-9);
+        assert!(tiers[2].resets_at.is_some());
+    }
+
+    #[test]
+    fn volcengine_afp_zero_quota_windows_treated_as_unbound() {
+        // 已鉴权但无 Agent Plan：窗口 Quota=0 → 空结果，调用方据此回落 Coding Plan。
+        let result = json!({
+            "PlanType": "",
+            "AFPFiveHour": { "Quota": 0.0, "Used": 0.0 },
+            "AFPWeekly":   { "Quota": 0.0, "Used": 0.0 },
+            "AFPMonthly":  { "Quota": 0.0, "Used": 0.0 }
+        });
+        assert!(parse_afp_tiers(&result).is_empty());
+    }
+
+    #[test]
+    fn volcengine_afp_partial_windows_only_subscribed_ones() {
+        // 仅 5h 窗口有额度（缺周/月）→ 只产出一个 tier。
+        let result = json!({
+            "AFPFiveHour": { "Quota": 40.0, "Used": 10.0, "ResetTime": 1778806800000_i64 },
+            "AFPWeekly":   { "Quota": 0.0,  "Used": 0.0 }
+        });
+        let tiers = parse_afp_tiers(&result);
+        assert_eq!(tiers.len(), 1);
+        assert_eq!(tiers[0].name, TIER_FIVE_HOUR);
+        assert!((tiers[0].utilization - 25.0).abs() < 1e-9);
+    }
+
+    #[test]
+    fn volcengine_coding_plan_real_response_levels() {
+        // 真实 GetCodingPlanUsage 响应（用户实测 2026-06-21）：字段名是 `Level`（非 `Type`），
+        // 仅百分比，秒级 ResetTimestamp；session 无活跃窗口回 -1 → 无重置时间。
+        let result = json!({
+            "Status": "Running",
+            "UpdateTimestamp": 1782053286_i64,
+            "QuotaUsage": [
+                { "Level": "session", "Percent": 0.0,      "ResetTimestamp": -1_i64 },
+                { "Level": "weekly",  "Percent": 1.672568, "ResetTimestamp": 1782057600_i64 },
+                { "Level": "monthly", "Percent": 0.836284, "ResetTimestamp": 1784303999_i64 }
+            ]
+        });
+        let tiers = parse_coding_plan_tiers(&result);
+        assert_eq!(tiers.len(), 3);
+        assert_eq!(tiers[0].name, TIER_FIVE_HOUR);
+        assert!((tiers[0].utilization - 0.0).abs() < 1e-9);
+        assert!(
+            tiers[0].resets_at.is_none(),
+            "session ResetTimestamp=-1 应无重置时间"
+        );
+        assert_eq!(tiers[1].name, TIER_WEEKLY_LIMIT);
+        assert!((tiers[1].utilization - 1.672568).abs() < 1e-6);
+        assert!(tiers[1].resets_at.is_some());
+        assert_eq!(tiers[2].name, TIER_MONTHLY);
+        assert!((tiers[2].utilization - 0.836284).abs() < 1e-6);
+    }
+
+    #[test]
+    fn volcengine_coding_plan_unknown_window_skipped_and_missing_array_empty() {
+        let result = json!({
+            "QuotaUsage": [
+                { "Level": "daily", "Percent": 9.0 },
+                { "Level": "weekly", "Percent": 20.0 }
+            ]
+        });
+        let tiers = parse_coding_plan_tiers(&result);
+        assert_eq!(tiers.len(), 1, "未知 daily 窗口跳过");
+        assert_eq!(tiers[0].name, TIER_WEEKLY_LIMIT);
+
+        assert!(parse_coding_plan_tiers(&json!({})).is_empty());
+    }
+
+    #[test]
+    fn volcengine_region_derivation() {
+        assert_eq!(
+            volcengine_region("https://ark.cn-beijing.volces.com/api/coding"),
+            "cn-beijing"
+        );
+        // 其他 region 的数据面域名按段提取。
+        assert_eq!(
+            volcengine_region("https://ark.cn-shanghai.volces.com/api/coding/v3"),
+            "cn-shanghai"
+        );
+        // 无可识别 region 段时回落默认 cn-beijing。
+        assert_eq!(
+            volcengine_region("https://example.com/api/coding"),
+            "cn-beijing"
+        );
+    }
+
+    #[test]
+    fn volcengine_canonical_query_is_sorted_and_encoded() {
+        // 按 key 字母序：Action < Region < Version；值含 `-` 属 unreserved，不编码。
+        assert_eq!(
+            volcengine_canonical_query("GetAFPUsage", "cn-beijing"),
+            "Action=GetAFPUsage&Region=cn-beijing&Version=2024-01-01"
+        );
+    }
+
+    #[test]
+    fn volcengine_sign_structure_and_determinism() {
+        // 没有服务端金标准向量时，锁定签名的结构契约 + 确定性（足以抓住 header 顺序、
+        // scope 后缀、algorithm 前缀、空 body hash 等实现错误）。真实正确性靠用户实测。
+        let now = chrono::DateTime::parse_from_rfc3339("2024-06-21T00:00:00Z")
+            .unwrap()
+            .with_timezone(&chrono::Utc);
+        let region = "cn-beijing";
+        let query = volcengine_canonical_query("GetAFPUsage", region);
+        let (auth, x_date, x_content) =
+            volcengine_sign("AKLTtest", "secretkey", region, &query, b"", now);
+
+        // 空 body 的 SHA-256（固定值），证明走的是空 body。
+        assert_eq!(
+            x_content,
+            "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+        );
+        // X-Date 形如 20240621T000000Z。
+        assert_eq!(x_date, "20240621T000000Z");
+        // Authorization 结构：算法无 AWS4 前缀、scope 结尾 ark/request、固定 SignedHeaders。
+        assert!(
+            auth.starts_with("HMAC-SHA256 Credential=AKLTtest/20240621/cn-beijing/ark/request,"),
+            "unexpected credential/scope: {auth}"
+        );
+        assert!(
+            auth.contains("SignedHeaders=host;x-date;x-content-sha256;content-type,"),
+            "unexpected signed headers: {auth}"
+        );
+        // Signature 是 64 位十六进制。
+        let sig = auth.rsplit("Signature=").next().unwrap();
+        assert_eq!(sig.len(), 64);
+        assert!(sig.bytes().all(|b| b.is_ascii_hexdigit()));
+
+        // 确定性：同输入同输出。
+        let (auth2, _, _) = volcengine_sign("AKLTtest", "secretkey", region, &query, b"", now);
+        assert_eq!(auth, auth2);
+    }
+
+    #[test]
+    fn volcengine_auth_error_code_detection_and_extraction() {
+        assert!(volcengine_is_auth_error_code("AccessDenied"));
+        assert!(volcengine_is_auth_error_code("SignatureDoesNotMatch"));
+        assert!(volcengine_is_auth_error_code("InvalidAuthorization"));
+        assert!(volcengine_is_auth_error_code("Unauthorized"));
+        assert!(!volcengine_is_auth_error_code("InvalidParameter.Action"));
+        assert!(!volcengine_is_auth_error_code("InternalError"));
+
+        // ResponseMetadata.Error 抽取
+        let body = json!({
+            "ResponseMetadata": { "RequestId": "x", "Error": { "Code": "AccessDenied", "Message": "no permission" } }
+        });
+        let (code, msg) = volcengine_response_error(&body).expect("应抽到 Error");
+        assert_eq!(code, "AccessDenied");
+        assert_eq!(msg, "no permission");
+
+        // 无 Error 时返回 None
+        let ok_body = json!({ "ResponseMetadata": { "RequestId": "x" }, "Result": {} });
+        assert!(volcengine_response_error(&ok_body).is_none());
+    }
 }

src-tauri/src/services/subscription.rs

@@ -307,6 +307,11 @@ pub const TIER_SEVEN_DAY_SONNET: &str = "seven_day_sonnet";
 /// 写入、tray 渲染、commands::provider 扁平化三处共用同一标识。
 pub const TIER_WEEKLY_LIMIT: &str = "weekly_limit";
 
+/// 月窗口 tier 名。火山方舟 Agent Plan / Coding Plan 有 5h / 周 / 月 三个展示
+/// 窗口（Kimi / MiniMax 只有 5h + 周），月窗口共用此标识；前端 `TIER_I18N_KEYS`
+/// 映射到 `subscription.monthly`。
+pub const TIER_MONTHLY: &str = "monthly";
+
 /// Gemini 用量分组名称（按模型而非时间窗口）。`classify_gemini_model` 输出。
 pub const TIER_GEMINI_PRO: &str = "gemini_pro";
 pub const TIER_GEMINI_FLASH: &str = "gemini_flash";

src-tauri/src/tray.rs

@@ -19,6 +19,8 @@ const W_TIER_NAMES: &[&str] = &[
     crate::services::subscription::TIER_SEVEN_DAY_OPUS,
     crate::services::subscription::TIER_SEVEN_DAY_SONNET,
 ];
+// 火山方舟 Agent/Coding Plan 的月窗口（5h/周/月 三档）。
+const M_TIER_NAMES: &[&str] = &[crate::services::subscription::TIER_MONTHLY];
 const GEMINI_PRO_TIER_NAMES: &[&str] = &[crate::services::subscription::TIER_GEMINI_PRO];
 const GEMINI_FLASH_TIER_NAMES: &[&str] = &[crate::services::subscription::TIER_GEMINI_FLASH];
 const GEMINI_FLASH_LITE_TIER_NAMES: &[&str] =
@@ -26,6 +28,7 @@ const GEMINI_FLASH_LITE_TIER_NAMES: &[&str] =
 const TIER_LABEL_GROUPS: &[(&str, &[&str])] = &[
     ("h", H_TIER_NAMES),
     ("w", W_TIER_NAMES),
+    ("m", M_TIER_NAMES),
     ("p", GEMINI_PRO_TIER_NAMES),
     ("f", GEMINI_FLASH_TIER_NAMES),
     ("l", GEMINI_FLASH_LITE_TIER_NAMES),
@@ -878,7 +881,7 @@ mod tests {
     use crate::provider::{UsageData, UsageResult};
     use crate::services::subscription::{
         CredentialStatus, QuotaTier, SubscriptionQuota, TIER_FIVE_HOUR, TIER_GEMINI_FLASH,
-        TIER_GEMINI_FLASH_LITE, TIER_GEMINI_PRO, TIER_SEVEN_DAY, TIER_SEVEN_DAY_OPUS,
+        TIER_GEMINI_FLASH_LITE, TIER_GEMINI_PRO, TIER_MONTHLY, TIER_SEVEN_DAY, TIER_SEVEN_DAY_OPUS,
         TIER_SEVEN_DAY_SONNET, TIER_WEEKLY_LIMIT,
     };
 
@@ -1094,6 +1097,36 @@ mod tests {
         assert!(s.contains("w50%"), "expected w50% in {s}");
     }
 
+    #[test]
+    fn script_summary_token_plan_volcengine_three_tiers_with_monthly() {
+        // 火山方舟 Agent Plan 回 5h/周/月三档，托盘应包含 m（月）窗口，
+        // 不再静默丢弃。
+        let r = usage_result(
+            true,
+            vec![
+                usage_data(Some(TIER_FIVE_HOUR), 25.0),
+                usage_data(Some(TIER_WEEKLY_LIMIT), 30.0),
+                usage_data(Some(TIER_MONTHLY), 42.0),
+            ],
+        );
+        let s = format_script_summary(&r).expect("should format");
+        assert!(s.contains("h25%"), "expected h25% in {s}");
+        assert!(s.contains("w30%"), "expected w30% in {s}");
+        assert!(s.contains("m42%"), "expected m42% in {s}");
+    }
+
+    #[test]
+    fn script_summary_token_plan_monthly_only_renders_label_not_raw_name() {
+        // 仅月窗口激活时不应回落到原始 "monthly" 机器名，而是走 m 标签。
+        let r = usage_result(true, vec![usage_data(Some(TIER_MONTHLY), 60.0)]);
+        let s = format_script_summary(&r).expect("should format");
+        assert!(s.contains("m60%"), "expected m60% in {s}");
+        assert!(
+            !s.contains("monthly"),
+            "raw tier name should not leak into label: {s}"
+        );
+    }
+
     #[test]
     fn script_summary_official_subscription_claude_uses_h_and_w_labels() {
         let r = usage_result(

src/components/SubscriptionQuotaFooter.tsx

@@ -33,6 +33,8 @@ export const TIER_I18N_KEYS: Record<string, string> = {
   gemini_flash_lite: "subscription.geminiFlashLite",
   // Token Plan（five_hour 已在上方官方映射中）
   weekly_limit: "subscription.sevenDay",
+  // 火山方舟 Agent Plan / Coding Plan 的月窗口
+  monthly: "subscription.monthly",
   // GitHub Copilot
   premium: "subscription.copilotPremium",
 };

src/components/UsageScriptModal.tsx

@@ -538,8 +538,10 @@ const UsageScriptModal: React.FC<UsageScriptModalProps> = ({
 
       // Coding Plan 模板使用专用 API
       if (selectedTemplate === TEMPLATE_TYPES.TOKEN_PLAN) {
-        // ZenMux 使用用户在脚本配置中手动填入的 API Key 和 Base URL
+        // ZenMux 手填 baseUrl/apiKey；火山是 native 供应商，baseUrl 走推理配置，
+        // 另用账号 AK/SK 签名查询控制面用量。
         const isZenMux = script.codingPlanProvider === "zenmux";
+        const isVolcengine = script.codingPlanProvider === "volcengine";
         const baseUrl = isZenMux
           ? (script.baseUrl ?? "")
           : (providerCredentials.baseUrl ?? "");
@@ -547,7 +549,12 @@ const UsageScriptModal: React.FC<UsageScriptModalProps> = ({
           ? (script.apiKey ?? "")
           : (providerCredentials.apiKey ?? "");
         const { subscriptionApi } = await import("@/lib/api/subscription");
-        const quota = await subscriptionApi.getCodingPlanQuota(baseUrl, apiKey);
+        const quota = await subscriptionApi.getCodingPlanQuota(
+          baseUrl,
+          apiKey,
+          isVolcengine ? script.accessKeyId : undefined,
+          isVolcengine ? script.secretAccessKey : undefined,
+        );
         if (quota.success && quota.tiers.length > 0) {
           const summary = quota.tiers
             .map((tier) => `${tier.name}: ${Math.round(tier.utilization)}%`)
@@ -726,8 +733,9 @@ const UsageScriptModal: React.FC<UsageScriptModalProps> = ({
           providerCredentials.baseUrl,
         );
         const provider = script.codingPlanProvider || autoDetected || "kimi";
-        // ZenMux 允许手动填写 API Key 和 Base URL，不清除
+        // ZenMux 保留手填 baseUrl/apiKey；火山保留账号 AK/SK；其余清除。
         const isZenMux = provider === "zenmux";
+        const isVolcengine = provider === "volcengine";
         setScript({
           ...script,
           code: "",
@@ -735,6 +743,8 @@ const UsageScriptModal: React.FC<UsageScriptModalProps> = ({
           baseUrl: isZenMux ? script.baseUrl : undefined,
           accessToken: undefined,
           userId: undefined,
+          accessKeyId: isVolcengine ? script.accessKeyId : undefined,
+          secretAccessKey: isVolcengine ? script.secretAccessKey : undefined,
           codingPlanProvider: provider,
         });
       } else if (presetName === TEMPLATE_TYPES.BALANCE) {
@@ -1246,6 +1256,83 @@ const UsageScriptModal: React.FC<UsageScriptModalProps> = ({
               </div>
             )}
 
+            {/* 火山方舟：控制面用量查询需账号 AK/SK（与推理 Key 是两套凭据） */}
+            {selectedTemplate === TEMPLATE_TYPES.TOKEN_PLAN &&
+              script.codingPlanProvider === "volcengine" && (
+                <div className="space-y-4">
+                  <div>
+                    <h4 className="text-sm font-medium text-foreground">
+                      {t("usageScript.credentialsConfig")}
+                    </h4>
+                    <p className="text-xs text-muted-foreground mt-1 leading-relaxed">
+                      {t("usageScript.volcengineAkSkHint")}
+                    </p>
+                  </div>
+
+                  <div className="grid gap-4 md:grid-cols-2">
+                    <div className="space-y-2">
+                      <Label htmlFor="usage-volcengine-ak">
+                        {t("usageScript.accessKeyId")}
+                      </Label>
+                      <Input
+                        id="usage-volcengine-ak"
+                        type="text"
+                        value={script.accessKeyId || ""}
+                        onChange={(e) =>
+                          setScript({
+                            ...script,
+                            accessKeyId: e.target.value,
+                          })
+                        }
+                        placeholder="AKLT..."
+                        autoComplete="off"
+                        className="border-white/10"
+                      />
+                    </div>
+
+                    <div className="space-y-2">
+                      <Label htmlFor="usage-volcengine-sk">
+                        {t("usageScript.secretAccessKey")}
+                      </Label>
+                      <div className="relative">
+                        <Input
+                          id="usage-volcengine-sk"
+                          type={showApiKey ? "text" : "password"}
+                          value={script.secretAccessKey || ""}
+                          onChange={(e) =>
+                            setScript({
+                              ...script,
+                              secretAccessKey: e.target.value,
+                            })
+                          }
+                          placeholder="••••••••"
+                          autoComplete="off"
+                          className="border-white/10"
+                        />
+                        {script.secretAccessKey && (
+                          <button
+                            type="button"
+                            onClick={() => setShowApiKey(!showApiKey)}
+                            className="absolute inset-y-0 right-0 flex items-center pr-3 text-muted-foreground hover:text-foreground transition-colors"
+                            aria-label={
+                              showApiKey
+                                ? t("apiKeyInput.hide")
+                                : t("apiKeyInput.show")
+                            }
+                          >
+                            {showApiKey ? (
+                              <EyeOff size={16} />
+                            ) : (
+                              <Eye size={16} />
+                            )}
+                          </button>
+                        )}
+                      </div>
+                    </div>
+                  </div>
+                </div>
+              )}
+
             {/* 通用配置（始终显示） */}
             <div className="grid gap-4 md:grid-cols-2 pt-4 border-t border-white/10">
               {/* 超时时间 */}

src/config/codingPlanProviders.ts

@@ -11,7 +11,7 @@ import { TEMPLATE_TYPES } from "@/config/constants";
 
 export interface CodingPlanProviderEntry {
   /** 与后端 QuotaTier 的 `codingPlanProvider` 取值对齐 */
-  id: "kimi" | "zhipu" | "minimax" | "zenmux";
+  id: "kimi" | "zhipu" | "minimax" | "zenmux" | "volcengine";
   /** UsageScriptModal 下拉显示用 */
   label: string;
   /** base_url 匹配规则 */
@@ -35,6 +35,14 @@ export const CODING_PLAN_PROVIDERS: readonly CodingPlanProviderEntry[] = [
     label: "ZenMux",
     pattern: /zenmux\./i,
   },
+  {
+    // 火山方舟 Agent Plan / Coding Plan。base_url 形如
+    // ark.cn-beijing.volces.com/api/coding[/v3]；与后端 detect_provider 的
+    // `volces.com/api/coding` 子串判断同效。
+    id: "volcengine",
+    label: "火山方舟 (Volcengine)",
+    pattern: /volces\.com\/api\/coding/i,
+  },
 ] as const;
 
 /** 根据 Base URL 自动检测 Coding Plan 供应商；未命中返回 null */

src/i18n/locales/en.json

@@ -1557,6 +1557,9 @@
     "accessTokenPlaceholder": "Generate in 'Security Settings'",
     "userId": "User ID",
     "userIdPlaceholder": "e.g., 114514",
+    "accessKeyId": "AccessKey ID",
+    "secretAccessKey": "SecretAccessKey",
+    "volcengineAkSkHint": "Volcengine usage query needs an account-level AccessKey ID / Secret (different from the inference API key). Create them in the Volcengine console via the top-right account menu → 'API Access Keys'.",
     "defaultPlan": "Default Plan",
     "queryFailedMessage": "Query failed",
     "queryScript": "Query script (JavaScript)",
@@ -2856,6 +2859,7 @@
     "geminiFlash": "Flash",
     "geminiFlashLite": "Flash Lite",
     "weeklyLimit": "Weekly",
+    "monthly": "Monthly",
     "copilotPremium": "Premium",
     "utilization": "{{value}}%",
     "resetsIn": "Resets in {{time}}",

src/i18n/locales/ja.json

@@ -1557,6 +1557,9 @@
     "accessTokenPlaceholder": "「Security Settings」で生成",
     "userId": "ユーザー ID",
     "userIdPlaceholder": "例: 114514",
+    "accessKeyId": "AccessKey ID",
+    "secretAccessKey": "SecretAccessKey",
+    "volcengineAkSkHint": "Volcengine の使用量照会にはアカウントレベルの AccessKey ID / Secret が必要です（推論 API キーとは別物）。Volcengine コンソール右上のアカウントメニュー →「API アクセスキー」で作成してください。",
     "defaultPlan": "デフォルトプラン",
     "queryFailedMessage": "照会に失敗しました",
     "queryScript": "照会スクリプト (JavaScript)",
@@ -2856,6 +2859,7 @@
     "geminiFlash": "Flash",
     "geminiFlashLite": "Flash Lite",
     "weeklyLimit": "週間",
+    "monthly": "月間",
     "copilotPremium": "プレミアム",
     "utilization": "{{value}}%",
     "resetsIn": "{{time}}後にリセット",

src/i18n/locales/zh-TW.json

@@ -1529,6 +1529,9 @@
     "accessTokenPlaceholder": "在「安全設定」裡產生",
     "userId": "使用者 ID",
     "userIdPlaceholder": "例如：114514",
+    "accessKeyId": "AccessKey ID",
+    "secretAccessKey": "SecretAccessKey",
+    "volcengineAkSkHint": "火山用量查詢需帳號級 AccessKey ID / Secret（與推理 API Key 不同）。請在火山引擎主控台右上角帳號選單 →「API存取金鑰」中建立。",
     "defaultPlan": "預設方案",
     "queryFailedMessage": "查詢失敗",
     "queryScript": "查詢腳本（JavaScript）",
@@ -2828,6 +2831,7 @@
     "geminiFlash": "Flash",
     "geminiFlashLite": "Flash Lite",
     "weeklyLimit": "每週",
+    "monthly": "每月",
     "copilotPremium": "進階請求",
     "utilization": "{{value}}%",
     "resetsIn": "{{time}} 後重設",

src/i18n/locales/zh.json

@@ -1557,6 +1557,9 @@
     "accessTokenPlaceholder": "在'安全设置'里生成",
     "userId": "用户 ID",
     "userIdPlaceholder": "例如：114514",
+    "accessKeyId": "AccessKey ID",
+    "secretAccessKey": "SecretAccessKey",
+    "volcengineAkSkHint": "火山用量查询需账号级 AccessKey ID / Secret（与推理 API Key 不同）。请在火山引擎控制台右上角账号菜单 →「API访问密钥」中创建。",
     "defaultPlan": "默认套餐",
     "queryFailedMessage": "查询失败",
     "queryScript": "查询脚本（JavaScript）",
@@ -2856,6 +2859,7 @@
     "geminiFlash": "Flash",
     "geminiFlashLite": "Flash Lite",
     "weeklyLimit": "每周",
+    "monthly": "每月",
     "copilotPremium": "高级请求",
     "utilization": "{{value}}%",
     "resetsIn": "{{time}}后重置",

src/lib/api/subscription.ts

@@ -9,8 +9,16 @@ export const subscriptionApi = {
   getCodingPlanQuota: (
     baseUrl: string,
     apiKey: string,
+    // 火山方舟用账号 AK/SK 签名查询用量；其他供应商不传。
+    accessKeyId?: string,
+    secretAccessKey?: string,
   ): Promise<SubscriptionQuota> =>
-    invoke("get_coding_plan_quota", { baseUrl, apiKey }),
+    invoke("get_coding_plan_quota", {
+      baseUrl,
+      apiKey,
+      accessKeyId,
+      secretAccessKey,
+    }),
   getBalance: (
     baseUrl: string,
     apiKey: string,

src/types.ts

@@ -62,6 +62,8 @@ export interface UsageScript {
   baseUrl?: string; // 用量查询专用的 Base URL（通用和 NewAPI 模板使用）
   accessToken?: string; // 访问令牌（NewAPI 模板使用）
   userId?: string; // 用户ID（NewAPI 模板使用）
+  accessKeyId?: string; // 火山方舟 AccessKey ID（用量查询签名用，与推理 Key 分离）
+  secretAccessKey?: string; // 火山方舟 SecretAccessKey
   codingPlanProvider?: string; // Coding Plan 供应商标识（如 "kimi", "zhipu", "minimax"）
   autoQueryInterval?: number; // 自动查询间隔（单位：分钟，0 表示禁用）
   autoIntervalMinutes?: number; // 自动查询间隔（分钟）- 别名字段