diff --git a/app/src/main/java/com/rainy/token/data/repository/CredentialRepository.kt b/app/src/main/java/com/rainy/token/data/repository/CredentialRepository.kt
index 4b011ec..09efac4 100644
--- a/app/src/main/java/com/rainy/token/data/repository/CredentialRepository.kt
+++ b/app/src/main/java/com/rainy/token/data/repository/CredentialRepository.kt
@@ -350,6 +350,23 @@ class CredentialRepository @Inject constructor(
                             field("refreshToken", credential.refreshToken)
                         }
                     }
+                    is Credential.TraeCredential -> {
+                        field("type", "trae")
+                        field("jwt", credential.jwt)
+                        field("region", credential.region)
+                    }
+                    is Credential.WorkBuddyCredential -> {
+                        // WorkBuddy 无公开稳定账户 ID；access/refresh token 会话内会轮换，
+                        // 若把 token 纳入身份，每次轮换都会误清余额缓存。这里用固定身份：
+                        // 余额缓存归属同一账号（换账号场景由下一次成功刷新直接覆盖）。
+                        field("type", "workbuddy")
+                        field("identity", "account")
+                    }
+                    is Credential.Sub2ApiCredential -> {
+                        field("type", "sub2api")
+                        field("baseUrl", credential.baseUrl)
+                        field("email", credential.email)
+                    }
                 }
             }
             return sha256(material)
@@ -396,6 +413,24 @@ class CredentialRepository @Inject constructor(
                         field("refreshToken", credential.refreshToken)
                         field("accountId", credential.accountId)
                     }
+                    is Credential.TraeCredential -> {
+                        field("type", "trae")
+                        field("jwt", credential.jwt)
+                        field("region", credential.region)
+                    }
+                    is Credential.WorkBuddyCredential -> {
+                        field("type", "workbuddy")
+                        field("accessToken", credential.accessToken)
+                        field("refreshToken", credential.refreshToken)
+                        field("expiresAt", credential.expiresAt.toString())
+                    }
+                    is Credential.Sub2ApiCredential -> {
+                        field("type", "sub2api")
+                        field("baseUrl", credential.baseUrl)
+                        field("email", credential.email)
+                        field("password", credential.password)
+                        field("apiKey", credential.apiKey)
+                    }
                 }
             }
             return sha256(material)
diff --git a/app/src/main/java/com/rainy/token/data/repository/Sub2ApiRepository.kt b/app/src/main/java/com/rainy/token/data/repository/Sub2ApiRepository.kt
new file mode 100644
index 0000000..51b0b68
--- /dev/null
+++ b/app/src/main/java/com/rainy/token/data/repository/Sub2ApiRepository.kt
@@ -0,0 +1,374 @@
+package com.rainy.token.data.repository
+
+import com.rainy.token.data.cache.BalanceCache
+import com.rainy.token.domain.model.Credential
+import com.rainy.token.domain.model.ServiceBalance
+import com.rainy.token.domain.service.ServiceConfigProvider
+import com.rainy.token.domain.model.Sub2DailyUsage
+import com.rainy.token.domain.model.Sub2ModelStat
+import com.rainy.token.domain.model.Sub2UsageDetail
+import com.rainy.token.domain.service.ServiceType
+import java.util.TimeZone
+import javax.inject.Singleton
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.JsonPrimitive
+import kotlinx.serialization.json.buildJsonObject
+import kotlinx.serialization.json.contentOrNull
+import kotlinx.serialization.json.doubleOrNull
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import kotlinx.serialization.json.put
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+
+/**
+ * Sub2API 余额仓库（自托管 mid 层/聚合面板，可配置任意实例）。
+ *
+ * 面向【普通用户】——任何持有本实例 `sk-` 下游 Key 的用户都能查自己的余额，
+ * 不需要管理员凭据（2026-09 实测 xxcsn.site 确认）：
+ * - 认证：`Authorization: Bearer <API Key>`（sk-…）
+ *   备选：无 API Key 时 POST {base}/api/v1/auth/login {email,password} → Bearer token
+ * - 查询：GET {base}/v1/usage  （部分实例是 /api/v1/usage，自动兜底）
+ *
+ * 真实响应（实测结构）：
+ * ```json
+ * {
+ *   "remaining": 302.29, "balance": 302.29, "unit": "USD", "planName": "钱包余额",
+ *   "isValid": true, "mode": "unrestricted",
+ *   "usage": { "total": {"cost": 32.06, "actual_cost": ...}, "today": {"cost": 4.03, ...} },
+ *   "model_stats": [ {"model":"deepseek-v4-flash","requests":..,"total_tokens":..,"cost":..}, ... ],
+ *   "daily_usage": [ {"date":"2026-09-04","requests":..,"cost":..}, ... ]
+ * }
+ * ```
+ * 字段名多版兼容（remaining/balance、unit/currency、cost/actual_cost），逐层防御扫描。
+ */
+@Singleton
+class Sub2ApiRepository constructor(
+    private val okHttpClient: OkHttpClient,
+    private val credentialRepository: CredentialRepository,
+    private val balanceCache: BalanceCache
+) {
+
+    private val json = Json { ignoreUnknownKeys = true }
+    private val jsonMedia = "application/json".toMediaType()
+
+    suspend fun fetchBalance(): Result<ServiceBalance> = withContext(Dispatchers.IO) {
+        val credential = credentialRepository.get(ServiceType.SUB2API)
+            ?: return@withContext Result.failure(RepositoryError.InvalidCredential())
+        if (credential !is Credential.Sub2ApiCredential) {
+            return@withContext Result.failure(RepositoryError.InvalidCredential())
+        }
+        val base = normalizeBase(credential.baseUrl)
+        if (base.isBlank()) return@withContext Result.failure(RepositoryError.InvalidCredential())
+
+        val auth = resolveAuth(base, credential) ?: return@withContext Result.failure(
+            RepositoryError.InvalidCredential("Sub2API 认证失败：请确认 API Key 有效，或用面板账号邮箱+密码")
+        )
+
+        // 主端点 /v1/usage；404 时兜底 /api/v1/usage。
+        // 带 days=90 多取每日明细（官方前端同款参数，网关不支持时忽略参数仍 200），
+        // timezone 保证 daily_usage 的 date 按用户所在时区聚合。
+        val usageQuery = "days=90&timezone=" + java.net.URLEncoder.encode(TimeZone.getDefault().id, "UTF-8")
+        val resp = get(base, "/v1/usage?$usageQuery", auth)
+            ?.takeIf { it.code != 404 && it.code != 400 }
+            ?: get(base, "/api/v1/usage?$usageQuery", auth)
+                ?.takeIf { it.code != 404 && it.code != 400 }
+            // 严格网关不认 days/timezone 参数（400）时，回退无参裸端点
+            ?: get(base, "/v1/usage", auth)
+                ?.takeIf { it.code != 404 }
+            ?: get(base, "/api/v1/usage", auth)
+            ?: return@withContext Result.failure(RepositoryError.Unknown())
+        if (resp.code !in 200..299) {
+            return@withContext Result.failure(mapSubHttpError(resp.code))
+        }
+        val stats = runCatching { parseUsageStats(resp.body) }.getOrElse { e ->
+            return@withContext Result.failure(
+                RepositoryError.ParseError(RepositoryError.ParseErrorReason.MALFORMED_RESPONSE, "sub2api /v1/usage 解析失败: ${e.message}")
+            )
+        }
+        val unit = stats.unit ?: ServiceConfigProvider.get(ServiceType.SUB2API).displayUnit
+        val balance = ServiceBalance(
+            service = ServiceType.SUB2API,
+            amount = stats.remaining,
+            unit = unit,
+            isAvailable = stats.valid,
+            monthlySpent = stats.totalSpent,
+            totalQuota = stats.totalQuota,
+            extras = stats.extras,
+            sub2UsageDetail = parseUsageDetail(resp.body).takeIf { it.isNotEmpty }
+        )
+        balanceCache.put(ServiceType.SUB2API, balance)
+        credentialRepository.save(credential.copy(lastVerifiedAt = System.currentTimeMillis()))
+        Result.success(balance)
+    }
+
+    // ---------- 认证 ----------
+
+    /** 返回可用认证头；失败返回 null。有 API Key 走 Bearer（普通用户推荐），否则登录换 token。 */
+    private fun resolveAuth(base: String, credential: Credential.Sub2ApiCredential): AuthHeader? {
+        if (!credential.apiKey.isNullOrBlank()) {
+            return AuthHeader("Authorization", "Bearer ${credential.apiKey.trim()}")
+        }
+        val body = buildJsonObject {
+            put("email", credential.email)
+            put("password", credential.password)
+        }.toString()
+        val loginUrl = "$base/api/v1/auth/login"
+        val request = Request.Builder()
+            .url(loginUrl)
+            .addHeader("Content-Type", "application/json")
+            .post(body.toRequestBody(jsonMedia))
+            .build()
+        return try {
+            okHttpClient.newCall(request).execute().use { resp ->
+                val text = resp.body?.string().orEmpty()
+                val token = when {
+                    resp.isSuccessful -> findToken(text)
+                    resp.code == 423 -> {
+                        // 登录前可能要求先接受合规条款
+                        acceptCompliance(base)
+                        okHttpClient.newCall(
+                            Request.Builder()
+                                .url(loginUrl)
+                                .addHeader("Content-Type", "application/json")
+                                .post(body.toRequestBody(jsonMedia))
+                                .build()
+                        ).execute().use { retry ->
+                            val retryBody = retry.body?.string().orEmpty()
+                            if (retry.isSuccessful) findToken(retryBody) else null
+                        }
+                    }
+                    else -> null
+                }
+                if (token != null) AuthHeader("Authorization", "Bearer $token") else null
+            }
+        } catch (_: Throwable) {
+            null
+        }
+    }
+
+    private fun findToken(text: String): String? {
+        return runCatching {
+            val obj = json.parseToJsonElement(text).jsonObject
+            val candidates = listOf(obj, obj["data"]?.jsonObject).filterNotNull()
+            var first: String? = null
+            outer@ for (root in candidates) {
+                for (key in listOf("access_token", "accessToken", "token", "api_token", "apiKey")) {
+                    val value = root[key]?.jsonPrimitive?.contentOrNull?.takeIf { it.isNotBlank() }
+                    if (value != null) {
+                        first = value
+                        break@outer
+                    }
+                }
+            }
+            first
+        }.getOrNull()
+    }
+
+    /**
+     * 登录引导专用：个别面板要求先 POST 一次 admin 作用域的 compliance/accept 才能继续登录。
+     * 仅作为 login 前置步骤使用，异常被吞、失败不影响余额主链路（余额查询本身走用户级 /v1/usage，
+     * 不依赖任何 admin 权限）。勿据此误以为集成依赖管理员权限。
+     */
+    private fun acceptCompliance(base: String) {
+        try {
+            okHttpClient.newCall(
+                Request.Builder()
+                    .url("$base/api/v1/admin/compliance/accept")
+                    .post("{}".toRequestBody(jsonMedia))
+                    .build()
+            ).execute().close()
+        } catch (_: Throwable) {
+            // 忽略；重试由外层决定
+        }
+    }
+
+    // ---------- 请求 ----------
+
+    private data class SubApiResponse(val code: Int, val body: String)
+
+    private fun get(base: String, path: String, auth: AuthHeader): SubApiResponse? =
+        runCatching {
+            okHttpClient.newCall(
+                Request.Builder()
+                    .url("$base$path")
+                    .header(auth.name, auth.value)
+                    .get()
+                    .build()
+            ).execute().let { resp ->
+                SubApiResponse(resp.code, resp.body?.string().orEmpty())
+            }
+        }.getOrNull()
+
+    private fun mapSubHttpError(code: Int): RepositoryError = when (code) {
+        401, 403 -> RepositoryError.InvalidCredential()
+        423 -> RepositoryError.ServerError(423)
+        429 -> RepositoryError.RateLimited()
+        in 500..599 -> RepositoryError.ServerError(code)
+        else -> RepositoryError.Unknown()
+    }
+
+    // ---------- 解析 ----------
+
+    private data class UsageStats(
+        val remaining: Double,
+        val unit: String?,
+        val valid: Boolean,
+        val totalSpent: Double?,
+        val totalQuota: Double?,
+        val extras: Map<String, String>
+    )
+
+    private fun parseUsageStats(body: String): UsageStats {
+        val root = json.parseToJsonElement(body).jsonObject
+        val top = root["data"]?.jsonObject ?: root
+
+        // 所有余额/用量字段：面板至少给出其一才算「有数据」，否则视为无法展示（isAvailable=false），
+        // 避免合法 JSON 但无任何余额字段时误显示 $0.00（对齐 WorkBuddy 无数据即不可用的语义）。
+        val remainingRaw = top.numberOr("remaining", "balance", "credits", "quota", "amount")
+        val remaining = remainingRaw ?: 0.0
+        val unit = top.scalar("unit", "currency", "symbol")
+
+        // 消费：usage.total.cost / usage.total.actual_cost / total_cost / monthly_spent
+        val usageObj = top["usage"]?.jsonObject
+        val totalObj = usageObj?.get("total")?.jsonObject
+        val totalSpent = (totalObj?.numberOr("cost", "actual_cost"))
+            ?: top.numberOr("total_cost", "monthly_spent", "spent")
+
+        // 总额度：仅当面板给出明确上限（订阅/配额型）时设置，钱包余额型不设
+        val totalQuota = top.numberOr("total_quota", "limit", "quota_limit")
+            ?.takeIf { it >= 0 }
+
+        val explicitValid = top["isValid"]?.jsonPrimitive?.contentOrNull?.toBooleanStrictOrNull()
+            ?: top["valid"]?.jsonPrimitive?.contentOrNull?.toBooleanStrictOrNull()
+        val hasData = remainingRaw != null || totalSpent != null || totalQuota != null
+        val valid = explicitValid ?: hasData
+
+        val extras = linkedMapOf<String, String>()
+        top.scalar("planName", "plan_name", "plan")?.let { extras["plan"] = it }
+        top.scalar("mode")?.let { extras["mode"] = it }
+        extras["valid"] = valid.toString()
+        top.scalar("remaining")?.let { extras["remaining"] = it }
+        top.scalar("unit")?.let { extras["unit"] = it }
+        (totalObj?.numberOr("cost", "actual_cost"))?.let { extras["total_cost"] = it.toString() }
+        usageObj?.get("today")?.jsonObject?.numberOr("cost", "actual_cost")?.let {
+            extras["today_cost"] = it.toString()
+        }
+
+        // 分模型：全量结构化解析（供筛选/排序），同时保留前 3 个键进 extras 兼容旧 UI。
+        val modelStats = top.parseModelStats()
+        modelStats.take(3).forEach { stat ->
+            val label = buildString {
+                if (stat.totalTokens > 0) append(stat.totalTokens).append(" tok")
+                if (stat.totalTokens > 0 && stat.cost > 0) append(" · ")
+                if (stat.cost > 0) append("$").append(trimNum(stat.cost))
+            }.ifBlank { "-" }
+            extras["model:" + stat.model] = label
+        }
+
+        // 每日明细：全量结构化解析（按日期升序，供时间窗口切片）。保留旧 days 键。
+        val dailyUsage = top.parseDailyUsage()
+        if (dailyUsage.isNotEmpty()) extras["days"] = dailyUsage.size.toString() + " d"
+
+        return UsageStats(remaining, unit, valid, totalSpent, totalQuota, extras)
+    }
+
+    /**
+     * 独立解析 /v1/usage 响应中的结构化明细（model_stats + daily_usage），供 UI 与单测使用。
+     * 响应字段多版本兼容：外层可能是 {data:{...}} 也可能是平铺；解析失败返回空明细。
+     */
+    internal fun parseUsageDetail(body: String): Sub2UsageDetail {
+        val ele = runCatching { json.parseToJsonElement(body) }.getOrNull() ?: return Sub2UsageDetail()
+        val root = ele.jsonObject
+        val top = root["data"]?.jsonObject ?: root
+        return Sub2UsageDetail(
+            modelStats = top.parseModelStats(),
+            dailyUsage = top.parseDailyUsage()
+        )
+    }
+
+    private fun trimNum(v: Double): String = v.toString().trimEnd('0', '.')
+
+    private fun JsonObject.scalar(vararg keys: String): String? {
+        for (key in keys) {
+            this[key]?.jsonPrimitive?.contentOrNull?.takeIf { it.isNotBlank() }?.let { return it }
+        }
+        return null
+    }
+
+    /** 仅当字段确实为 JSON 数组时返回（类型错误防御，不抛异常）。 */
+    private fun JsonObject.safeArray(key: String): kotlinx.serialization.json.JsonArray? =
+        runCatching { this[key]?.jsonArray }.getOrNull()
+
+    /** 平铺多候选整数值扫描（防御数字字符串/纯数字两种形态）。 */
+    private fun JsonObject.longOr(vararg keys: String): Long? {
+        for (key in keys) {
+            this[key]?.let { el ->
+                (el as? JsonPrimitive)?.contentOrNull?.toLongOrNull()?.let { return it }
+            }
+        }
+        return null
+    }
+
+    /** 解析 model_stats[]：字段名多版本兼容，行级失败跳过。 */
+    private fun JsonObject.parseModelStats(): List<Sub2ModelStat> =
+        (safeArray("model_stats") ?: return emptyList()).mapNotNull { el ->
+            runCatching {
+                val o = el.jsonObject
+                val name = o.scalar("model", "model_name", "name", "id") ?: return@mapNotNull null
+                val input = o.longOr("input_tokens", "prompt_tokens") ?: 0
+                val output = o.longOr("output_tokens", "completion_tokens") ?: 0
+                Sub2ModelStat(
+                    model = name,
+                    requests = o.longOr("requests", "request_count") ?: 0,
+                    inputTokens = input,
+                    outputTokens = output,
+                    totalTokens = o.longOr("total_tokens") ?: (input + output),
+                    cost = o.numberOr("cost", "actual_cost", "amount") ?: 0.0
+                )
+            }.getOrNull()
+        }
+
+    /** 解析 daily_usage[]：date + 请求数/tokens/cost；行级失败跳过；统一按日期升序（防御网关乱序）。 */
+    private fun JsonObject.parseDailyUsage(): List<Sub2DailyUsage> =
+        (safeArray("daily_usage") ?: return emptyList()).mapNotNull { el ->
+            runCatching {
+                val o = el.jsonObject
+                val date = o.scalar("date", "day") ?: return@mapNotNull null
+                val input = o.longOr("input_tokens", "prompt_tokens") ?: 0
+                val output = o.longOr("output_tokens", "completion_tokens") ?: 0
+                Sub2DailyUsage(
+                    date = date,
+                    requests = o.longOr("requests") ?: 0,
+                    totalTokens = o.longOr("total_tokens", "tokens") ?: (input + output),
+                    cost = o.numberOr("cost", "actual_cost") ?: 0.0
+                )
+            }.getOrNull()
+        }.sortedBy { it.date }
+
+    private fun JsonObject.numberOr(vararg keys: String): Double? {
+        for (key in keys) {
+            this[key]?.let { el ->
+                (el as? JsonPrimitive)?.doubleOrNull?.let { return it }
+                (el as? JsonPrimitive)?.contentOrNull?.toDoubleOrNull()?.let { return it }
+            }
+        }
+        return null
+    }
+
+    private fun normalizeBase(url: String): String {
+        var base = url.trim()
+        if (base.isBlank()) return ""
+        if (!base.startsWith("http://") && !base.startsWith("https://")) base = "https://$base"
+        while (base.endsWith("/")) base = base.dropLast(1)
+        return base
+    }
+
+    private data class AuthHeader(val name: String, val value: String)
+}
diff --git a/app/src/main/java/com/rainy/token/data/repository/TraeRepository.kt b/app/src/main/java/com/rainy/token/data/repository/TraeRepository.kt
new file mode 100644
index 0000000..6dddc7e
--- /dev/null
+++ b/app/src/main/java/com/rainy/token/data/repository/TraeRepository.kt
@@ -0,0 +1,210 @@
+package com.rainy.token.data.repository
+
+import com.rainy.token.data.cache.BalanceCache
+import com.rainy.token.domain.model.Credential
+import com.rainy.token.domain.model.ServiceBalance
+import com.rainy.token.domain.service.ServiceType
+import java.io.IOException
+import javax.inject.Singleton
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.JsonPrimitive
+import kotlinx.serialization.json.contentOrNull
+import kotlinx.serialization.json.doubleOrNull
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+
+/**
+ * Trae（CN / Intl）余额仓库。
+ *
+ * 认证：官方 IDE/Web 用的 `Authorization: Cloud-IDE-JWT <jwt>`（RS256，~14 天）。区域只决定域名：
+ * - CN  ：POST https://api.trae.cn/trae/api/v2/pay/ide_user_ent_usage
+ * - INTL：POST https://grow-normal.trae.ai/trae/api/v1/pay/ide_user_ent_usage
+ * 2026-09 用真实登录态实测（api.trae.cn）：**仅带 Authorization + Content-Type 即成功**，
+ * X-User-Region / X-Device-Id 均非必需（官方 Web 不带），故不再发送，避免设备绑定误伤。
+ *
+ * 真实响应（实测结构）：
+ * ```json
+ * {
+ *   "is_credits_billing": true,
+ *   "usage_summary": {"consumed_amount":3341.17,"consumption_ratio":0.613,"total_amount":5450},
+ *   "user_entitlement_pack_list": [ {
+ *      "display_desc":"签到奖励",
+ *      "entitlement_base_info":{"quota":{"credits_limit":150}, ...},
+ *      "usage":{"credits_amount":142.18}, ...
+ *   } ]
+ * }
+ * ```
+ * 余额权威口径 = `usage_summary.total_amount - consumed_amount`（>=0）；usage_summary 缺失时
+ * 才退回包级求和（credits_limit - credits_amount，限流/无限包不计）。字段名防御式扫描。
+ */
+@Singleton
+class TraeRepository constructor(
+    private val okHttpClient: OkHttpClient,
+    private val credentialRepository: CredentialRepository,
+    private val balanceCache: BalanceCache
+) {
+
+    private val json = Json { ignoreUnknownKeys = true }
+
+    suspend fun fetchBalance(): Result<ServiceBalance> = withContext(Dispatchers.IO) {
+        val credential = credentialRepository.get(ServiceType.TRAE)
+            ?: return@withContext Result.failure(RepositoryError.InvalidCredential())
+        if (credential !is Credential.TraeCredential || credential.jwt.isBlank()) {
+            return@withContext Result.failure(RepositoryError.InvalidCredential())
+        }
+
+        val regionKey = credential.region.uppercase().takeIf { it == "INTL" } ?: "CN"
+        val url = when (regionKey) {
+            "INTL" -> "https://grow-normal.trae.ai/trae/api/v1/pay/ide_user_ent_usage"
+            else -> "https://api.trae.cn/trae/api/v2/pay/ide_user_ent_usage"
+        }
+        val request = Request.Builder()
+            .url(url)
+            .addHeader("Authorization", "Cloud-IDE-JWT ${credential.jwt.trim()}")
+            .addHeader("Content-Type", "application/json")
+            .post("{}".toRequestBody("application/json".toMediaType()))
+            .build()
+
+        val body = try {
+            okHttpClient.newCall(request).execute().use { resp ->
+                val text = resp.body?.string().orEmpty()
+                if (!resp.isSuccessful) {
+                    return@withContext Result.failure(mapHttpError(resp.code))
+                }
+                text
+            }
+        } catch (e: IOException) {
+            return@withContext Result.failure(RepositoryError.Network(e))
+        } catch (e: Throwable) {
+            return@withContext Result.failure(RepositoryError.Unknown(e))
+        }
+
+        val parsed = runCatching { parseBody(body) }
+            .getOrElse { e ->
+                return@withContext Result.failure(
+                    RepositoryError.ParseError(RepositoryError.ParseErrorReason.MALFORMED_RESPONSE, "trae 解析失败: ${e.message}")
+                )
+            }
+
+        val balance = ServiceBalance(
+            service = ServiceType.TRAE,
+            amount = parsed.amount,
+            unit = "Credits",
+            totalQuota = parsed.totalQuota,
+            extras = parsed.extras
+        )
+        balanceCache.put(ServiceType.TRAE, balance)
+        credentialRepository.save(credential.copy(lastVerifiedAt = System.currentTimeMillis()))
+        Result.success(balance)
+    }
+
+    /** 解析：usage_summary 权威优先；缺失时回退权益包求和。字段缺失跳过，不抛异常。 */
+    private fun parseBody(body: String): ParsedTraeUsage {
+        val root = json.parseToJsonElement(body).jsonObject
+        val extras = linkedMapOf<String, String>()
+
+        root["is_credits_billing"]?.jsonPrimitive?.contentOrNull?.let { extras["is_credits_billing"] = it }
+        root["is_dollar_usage_billing"]?.jsonPrimitive?.contentOrNull?.let { extras["is_dollar_usage_billing"] = it }
+        root["is_pay_freshman"]?.jsonPrimitive?.contentOrNull?.let { extras["is_new_user"] = it }
+
+        // 1) 权威汇总
+        val summary = root["usage_summary"]?.jsonObject
+        val total = summary?.numberOr("total_amount")
+        val consumed = summary?.numberOr("consumed_amount")
+        summary?.let { s ->
+            s.numberOr("consumed_amount")?.let { extras["consumed_credits"] = trimNum(it) }
+            s.numberOr("consumption_ratio")?.let { extras["consumption_ratio"] = trimNum(it) }
+            s.numberOr("total_amount")?.let { extras["total_credits"] = trimNum(it) }
+        }
+
+        // 2) 权益包明细（前若干条 + 计数），同时累计兜底求和
+        var fallbackSum = 0.0
+        var packShown = 0
+        var packCount = 0
+        val packs = root["user_entitlement_pack_list"]?.jsonArray
+        packs?.forEachIndexed { index, packEl ->
+            val pack = packEl.jsonObject
+            val base = pack["entitlement_base_info"]?.jsonObject
+            val quota = base?.get("quota")?.jsonObject
+            val name = pack.getString("display_desc") ?: base?.getString("name") ?: "pack[$index]"
+            val limit = quota?.getNumber("credits_limit")?.toLong()
+            val used = pack.getNumber("usage", "credits_amount")
+                ?: base?.get("usage")?.jsonObject?.get("credits_amount")?.safeDouble()
+            packCount++
+            when {
+                limit == null -> { /* 结构变化：跳过 */ }
+                limit < 0 -> extras["$name.unlimited"] = "true"
+                else -> {
+                    val remaining = (limit - (used ?: 0.0)).coerceAtLeast(0.0)
+                    fallbackSum += remaining
+                    if (packShown < 8) {
+                        extras["$name.limit"] = limit.toString()
+                        extras["$name.used"] = used?.let { trimNum(it) } ?: "?"
+                        packShown++
+                    }
+                }
+            }
+        }
+        if (packCount > 0) extras["pack_count"] = packCount.toString()
+
+        // 3) 金额：汇总优先，缺省回退包级
+        val amount = if (total != null && consumed != null) {
+            (total - consumed).coerceAtLeast(0.0)
+        } else fallbackSum
+        val totalQuota = total?.takeIf { it >= 0 }
+
+        return ParsedTraeUsage(amount = amount, totalQuota = totalQuota, extras = extras)
+    }
+
+    private fun JsonObject.getString(key: String): String? = this[key]?.jsonPrimitive?.contentOrNull
+
+    private fun JsonElement.safeDouble(): Double? =
+        runCatching { jsonPrimitive.content.toDoubleOrNull() }.getOrNull()
+
+    /** 按路径逐层取数：如 getNumber("usage","credits_amount") 取 this.usage.credits_amount。 */
+    private fun JsonObject.getNumber(vararg keys: String): Double? {
+        if (keys.isEmpty()) return null
+        var node: JsonObject? = this
+        for (i in keys.indices) {
+            val el = node?.get(keys[i]) ?: return null
+            if (i == keys.lastIndex) return el.safeDouble()
+            node = runCatching { el.jsonObject }.getOrNull()
+        }
+        return null
+    }
+
+    /** 平铺多候选数值扫描。 */
+    private fun JsonObject.numberOr(vararg keys: String): Double? {
+        for (key in keys) {
+            this[key]?.let { el ->
+                (el as? JsonPrimitive)?.doubleOrNull?.let { return it }
+                (el as? JsonPrimitive)?.contentOrNull?.toDoubleOrNull()?.let { return it }
+            }
+        }
+        return null
+    }
+
+    private fun mapHttpError(code: Int): RepositoryError = when (code) {
+        401, 403 -> RepositoryError.InvalidCredential()
+        429 -> RepositoryError.RateLimited()
+        in 500..599 -> RepositoryError.ServerError(code)
+        else -> RepositoryError.Unknown()
+    }
+
+    private fun trimNum(v: Double): String = v.toString().trimEnd('0', '.')
+
+    private data class ParsedTraeUsage(
+        val amount: Double,
+        val totalQuota: Double?,
+        val extras: Map<String, String>
+    )
+}
diff --git a/app/src/main/java/com/rainy/token/data/repository/WorkBuddyRepository.kt b/app/src/main/java/com/rainy/token/data/repository/WorkBuddyRepository.kt
new file mode 100644
index 0000000..c238c58
--- /dev/null
+++ b/app/src/main/java/com/rainy/token/data/repository/WorkBuddyRepository.kt
@@ -0,0 +1,298 @@
+package com.rainy.token.data.repository
+
+import com.rainy.token.data.cache.BalanceCache
+import com.rainy.token.domain.model.Credential
+import com.rainy.token.domain.model.ServiceBalance
+import com.rainy.token.domain.service.ServiceType
+import java.io.IOException
+import javax.inject.Singleton
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.JsonPrimitive
+import kotlinx.serialization.json.buildJsonArray
+import kotlinx.serialization.json.buildJsonObject
+import kotlinx.serialization.json.contentOrNull
+import kotlinx.serialization.json.doubleOrNull
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import kotlinx.serialization.json.longOrNull
+import kotlinx.serialization.json.put
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+
+/**
+ * 腾讯 WorkBuddy 余额仓库。
+ *
+ * 认证：`Authorization: Bearer <accessToken>`；accessToken 过期时用 refreshToken 轮换一次并重试
+ * （同 Codex 语义）：POST https://copilot.tencent.com/v2/plugin/auth/token/refresh（X-Refresh-Token 头）。
+ *
+ * 资源余额（2026-09 用真实登录态在官网个人中心实测，workbuddy.cn）：
+ * - 主端点：POST https://www.workbuddy.cn/billing/meter/get-user-resource-summary  body `{}`
+ *   真实响应：{"code":0,"data":{"Packages":[{"PackageCode":"TCACA_...","CycleTotalCapacity":"7826",
+ *   "CycleRemainCapacity":"2671.96","CycleUsedCapacity":"5154.04","CycleFrozenCapacity":"0",
+ *   "CapacityUnit":"credits"}, ...], "IsPaidUser":false}}
+ * - 兜底：POST https://www.codebuddy.cn/v2/billing/meter/get-user-resource（官方 CLI 插件模型，
+ *   ProductCode p_tcaca / Status 0,3），汇总 Packages/Accounts[] 同族字段。
+ * 余额 = 各包 CycleRemainCapacity 之和；单位取 CapacityUnit（credits）。
+ * 字段名随官方迭代可能变化，解析保持防御式（多候选扫描）。
+ */
+@Singleton
+class WorkBuddyRepository constructor(
+    private val okHttpClient: OkHttpClient,
+    private val credentialRepository: CredentialRepository,
+    private val balanceCache: BalanceCache
+) {
+
+    private val json = Json { ignoreUnknownKeys = true }
+
+    private val jsonMedia = "application/json".toMediaType()
+
+    private val codebuddyBody = buildJsonObject {
+        put("PageNumber", 1)
+        put("PageSize", 100)
+        put("ProductCode", "p_tcaca")
+        put("Status", buildJsonArray { add(JsonPrimitive(0)); add(JsonPrimitive(3)) })
+        put("Channel", "P")
+        put("Unsubmitted", false)
+        put("Unit", "")
+        put("QueryResourceId", buildJsonArray { })
+    }.toString()
+
+    suspend fun fetchBalance(): Result<ServiceBalance> = withContext(Dispatchers.IO) {
+        val credential = credentialRepository.get(ServiceType.WORKBUDDY)
+            ?: return@withContext Result.failure(RepositoryError.InvalidCredential())
+        if (credential !is Credential.WorkBuddyCredential) {
+            return@withContext Result.failure(RepositoryError.InvalidCredential())
+        }
+
+        var access = credential.accessToken
+        var refresh = credential.refreshToken
+        // hostMode 0 = workbuddy.cn summary（实测主路径）；1 = codebuddy.cn 兜底
+        var hostMode = 0
+        var attempts = 0
+        var lastBody = ""
+        while (attempts < 3) {
+            attempts++
+            val request = if (hostMode == 0) summaryRequest(access) else codebuddyRequest(access)
+            val resp = try {
+                okHttpClient.newCall(request).execute()
+            } catch (e: IOException) {
+                return@withContext Result.failure(RepositoryError.Network(e))
+            } catch (e: Throwable) {
+                return@withContext Result.failure(RepositoryError.Unknown(e))
+            }
+            val code = resp.code
+            val body = runCatching { resp.body?.string().orEmpty() }.getOrDefault("")
+            resp.close()
+
+            if (code in 200..299) {
+                lastBody = body
+                break
+            }
+            when (code) {
+                404 -> {
+                    if (hostMode == 0) { hostMode = 1; continue }
+                    return@withContext Result.failure(mapHttpError(code, body))
+                }
+                401, 403 -> {
+                    val refreshed = tryRefesh(refresh) ?: return@withContext Result.failure(
+                        RepositoryError.InvalidCredential()
+                    )
+                    // 暂存轮换后的凭据，随本次成功提交（RefreshWriteSession 机制）
+                    credentialRepository.save(
+                        credential.copy(
+                            accessToken = refreshed.accessToken,
+                            refreshToken = refreshed.refreshToken,
+                            expiresAt = if (refreshed.expiresIn > 0) {
+                                System.currentTimeMillis() + refreshed.expiresIn * 1000
+                            } else {
+                                credential.expiresAt.coerceAtLeast(System.currentTimeMillis())
+                            }
+                        )
+                    )
+                    access = refreshed.accessToken
+                    refresh = refreshed.refreshToken
+                    continue
+                }
+                else -> return@withContext Result.failure(mapHttpError(code, body))
+            }
+        }
+
+        if (lastBody.isBlank()) {
+            return@withContext Result.failure(
+                RepositoryError.ParseError(RepositoryError.ParseErrorReason.EMPTY_BODY, "workbuddy 响应为空")
+            )
+        }
+        val parsed = runCatching { parseResource(lastBody) }.getOrElse { e ->
+            return@withContext Result.failure(
+                RepositoryError.ParseError(
+                    RepositoryError.ParseErrorReason.MALFORMED_RESPONSE,
+                    "workbuddy 资源解析失败: ${e.message}"
+                )
+            )
+        }
+
+        val balance = ServiceBalance(
+            service = ServiceType.WORKBUDDY,
+            amount = parsed.amount,
+            unit = parsed.unit ?: "Credits",
+            monthlySpent = parsed.used.takeIf { it > 0 },
+            totalQuota = parsed.size.takeIf { it > 0 },
+            isAvailable = parsed.amount > 0 || parsed.size > 0,
+            extras = parsed.extras
+        )
+        balanceCache.put(ServiceType.WORKBUDDY, balance)
+        credentialRepository.save(credential.copy(lastVerifiedAt = System.currentTimeMillis()))
+        Result.success(balance)
+    }
+
+    /** workbuddy.cn 官网个人中心实测端点（2026-09 确认 200）。 */
+    private fun summaryRequest(accessToken: String): Request =
+        Request.Builder()
+            .url("https://www.workbuddy.cn/billing/meter/get-user-resource-summary")
+            .addHeader("Authorization", "Bearer $accessToken")
+            .addHeader("Content-Type", "application/json")
+            .post("{}".toRequestBody(jsonMedia))
+            .build()
+
+    /** codebuddy.cn 官方 CLI 插件模型（桌面/CLI accessToken 兜底）。 */
+    private fun codebuddyRequest(accessToken: String): Request =
+        Request.Builder()
+            .url("https://www.codebuddy.cn/v2/billing/meter/get-user-resource")
+            .addHeader("Authorization", "Bearer $accessToken")
+            .addHeader("Content-Type", "application/json")
+            .post(codebuddyBody.toRequestBody(jsonMedia))
+            .build()
+
+    /**
+     * refresh_token 单次轮换：POST token/refresh（X-Refresh-Token 头）。
+     * 只读取并返回新凭据；轮换后的提交交给主流程的 save（同一成功才落库）。
+     */
+    private fun tryRefesh(refreshToken: String): RefreshedWorkBuddy? {
+        val request = Request.Builder()
+            .url("https://copilot.tencent.com/v2/plugin/auth/token/refresh")
+            .addHeader("X-Refresh-Token", refreshToken)
+            .post("{}".toRequestBody(jsonMedia))
+            .build()
+        return try {
+            okHttpClient.newCall(request).execute().use { resp ->
+                if (!resp.isSuccessful) return@use null
+                val text = resp.body?.string().orEmpty()
+                val obj = json.parseToJsonElement(text).jsonObject
+                val access = obj.readToken("access_token", "accessToken")
+                    ?: obj["data"]?.jsonObject?.readToken("access_token", "accessToken")
+                    ?: return@use null
+                val refresh = obj.readToken("refresh_token", "refreshToken")
+                    ?: obj["data"]?.jsonObject?.readToken("refresh_token", "refreshToken")
+                    ?: refreshToken
+                val expiresIn = obj["expires_in"]?.jsonPrimitive?.longOrNull ?: 0L
+                RefreshedWorkBuddy(access, refresh, expiresIn)
+            }
+        } catch (_: Throwable) {
+            null
+        }
+    }
+
+    private fun JsonObject.readToken(vararg keys: String): String? {
+        for (key in keys) {
+            this[key]?.jsonPrimitive?.contentOrNull?.takeIf { it.isNotBlank() }?.let { return it }
+        }
+        return null
+    }
+
+    /** 解析 Packages/Accounts：CycleRemain/Used/TotalCapacity（多候选）。无任何包/数据时抛异常。 */
+    private fun parseResource(body: String): ParsedWorkBuddy {
+        val root = json.parseToJsonElement(body).jsonObject
+        val data = root["data"]?.jsonObject ?: root
+        val packages = data["Packages"]?.jsonArray ?: data["Accounts"]?.jsonArray ?: root["Packages"]?.jsonArray
+        val list = packages?.mapNotNull { it.jsonObject.takeIf { o -> o.isNotEmpty() } } ?: emptyList()
+        if (list.isEmpty()) {
+            throw IllegalArgumentException("workbuddy 响应无 Packages/Accounts 数据")
+        }
+
+        var amount = 0.0
+        var used = 0.0
+        var size = 0.0
+        var frozen = 0.0
+        var unitRaw: String? = null
+        val extras = linkedMapOf<String, String>()
+        for (item in list.take(20)) {
+            val remain = item.number("CycleRemainCapacity", "CycleCapacityRemain", "Remain", "balance") ?: 0.0
+            val u = item.number("CycleUsedCapacity", "CycleCapacityUsed", "Used") ?: 0.0
+            val s = item.number("CycleTotalCapacity", "CycleCapacitySize", "Size", "Total") ?: 0.0
+            val f = item.number("CycleFrozenCapacity", "Frozen") ?: 0.0
+            amount += remain
+            used += u
+            size += s
+            frozen += f
+            unitRaw = unitRaw ?: item.scalar("CapacityUnit", "unit", "currency", "Unit")
+            val name = item.scalar("ProductName", "PackageCode", "ResourceName", "name", "ResourceId")
+            if (!name.isNullOrBlank() && extras.size < 3) {
+                extras[name] = "${trimNum(remain)} ${normalizeUnit(unitRaw) ?: "Credits"}"
+            }
+        }
+        if (list.size > 0) extras["packages"] = list.size.toString()
+        if (frozen > 0) extras["frozen"] = trimNum(frozen)
+        data["IsPaidUser"]?.jsonPrimitive?.contentOrNull?.let { extras["is_paid_user"] = it }
+        data["SubscriptionPackageCode"]?.jsonPrimitive?.contentOrNull?.takeIf { it.isNotBlank() }
+            ?.let { extras["subscription"] = "true" }
+
+        return ParsedWorkBuddy(
+            amount = amount,
+            used = used,
+            size = size,
+            unit = normalizeUnit(unitRaw),
+            extras = extras
+        )
+    }
+
+    /** 官方字段 credits → 展示单位 Credits；其它原样透传。 */
+    private fun normalizeUnit(raw: String?): String? {
+        if (raw.isNullOrBlank()) return null
+        return if (raw.equals("credits", ignoreCase = true)) "Credits" else raw
+    }
+
+    private fun trimNum(v: Double): String = v.toString().trimEnd('0', '.')
+
+    private fun JsonObject.number(vararg keys: String): Double? {
+        for (key in keys) {
+            this[key]?.jsonPrimitive?.doubleOrNull?.let { return it }
+            this[key]?.jsonPrimitive?.contentOrNull?.toDoubleOrNull()?.let { return it }
+        }
+        return null
+    }
+
+    private fun JsonObject.scalar(vararg keys: String): String? {
+        for (key in keys) {
+            this[key]?.jsonPrimitive?.contentOrNull?.takeIf { it.isNotBlank() }?.let { return it }
+        }
+        return null
+    }
+
+    private fun mapHttpError(code: Int, body: String): RepositoryError = when (code) {
+        401, 403 -> RepositoryError.InvalidCredential()
+        429 -> RepositoryError.RateLimited()
+        423 -> RepositoryError.ServerError(code)
+        in 500..599 -> RepositoryError.ServerError(code)
+        else -> RepositoryError.Unknown()
+    }
+
+    private data class RefreshedWorkBuddy(
+        val accessToken: String,
+        val refreshToken: String,
+        val expiresIn: Long
+    )
+
+    private data class ParsedWorkBuddy(
+        val amount: Double,
+        val used: Double,
+        val size: Double,
+        val unit: String?,
+        val extras: Map<String, String>
+    )
+}
diff --git a/app/src/main/java/com/rainy/token/di/NetworkModule.kt b/app/src/main/java/com/rainy/token/di/NetworkModule.kt
index 42302ef..406b161 100644
--- a/app/src/main/java/com/rainy/token/di/NetworkModule.kt
+++ b/app/src/main/java/com/rainy/token/di/NetworkModule.kt
@@ -17,6 +17,9 @@ import com.rainy.token.data.repository.CommandCodeUsageRepository
 import com.rainy.token.data.repository.OpenCodeGoRepository
 import com.rainy.token.data.repository.OpenCodeUsageRepository
 import com.rainy.token.data.repository.OllamaRepository
+import com.rainy.token.data.repository.Sub2ApiRepository
+import com.rainy.token.data.repository.TraeRepository
+import com.rainy.token.data.repository.WorkBuddyRepository
 import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
@@ -176,6 +179,39 @@ object NetworkModule {
         balanceCache: BalanceCache
     ): OllamaRepository = OllamaRepository(okHttpClient, credentialRepository, balanceCache)
 
+    /**
+     * Trae 仓库：Cloud-IDE-JWT 认证 + REST。
+     */
+    @Provides
+    @Singleton
+    fun provideTraeRepository(
+        okHttpClient: OkHttpClient,
+        credentialRepository: CredentialRepository,
+        balanceCache: BalanceCache
+    ): TraeRepository = TraeRepository(okHttpClient, credentialRepository, balanceCache)
+
+    /**
+     * WorkBuddy 仓库：OAuth Bearer + get-user-resource。
+     */
+    @Provides
+    @Singleton
+    fun provideWorkBuddyRepository(
+        okHttpClient: OkHttpClient,
+        credentialRepository: CredentialRepository,
+        balanceCache: BalanceCache
+    ): WorkBuddyRepository = WorkBuddyRepository(okHttpClient, credentialRepository, balanceCache)
+
+    /**
+     * Sub2API 仓库：自托管实例（凭据里的 baseUrl）+ 管理面板 API。
+     */
+    @Provides
+    @Singleton
+    fun provideSub2ApiRepository(
+        okHttpClient: OkHttpClient,
+        credentialRepository: CredentialRepository,
+        balanceCache: BalanceCache
+    ): Sub2ApiRepository = Sub2ApiRepository(okHttpClient, credentialRepository, balanceCache)
+
     /** 余额缓存 DataStore（计划 7.1） */
     @Provides
     @Singleton
diff --git a/app/src/main/java/com/rainy/token/domain/model/Credential.kt b/app/src/main/java/com/rainy/token/domain/model/Credential.kt
index 44c82ab..b062dfc 100644
--- a/app/src/main/java/com/rainy/token/domain/model/Credential.kt
+++ b/app/src/main/java/com/rainy/token/domain/model/Credential.kt
@@ -62,6 +62,55 @@ sealed class Credential {
         val expiresAt: Long,
         override val lastVerifiedAt: Long = 0L
     ) : Credential()
+
+    /**
+     * 用于 Trae（CN/Intl）：官方 IDE 扩展使用的 Cloud-IDE-JWT。
+     * 单个 JWT（~14 天 RS256），配 [region] 决定域名与请求头。
+     */
+    @Serializable
+    data class TraeCredential(
+        override val service: ServiceType,
+        /** `Authorization: Cloud-IDE-JWT <jwt>` 的 JWT 值 */
+        val jwt: String,
+        /** 区域："CN"（api.trae.cn）/ "INTL"（grow-normal.trae.ai） */
+        val region: String = "CN",
+        override val lastVerifiedAt: Long = 0L
+    ) : Credential()
+
+    /**
+     * 用于腾讯 WorkBuddy（AI 办公 Agent，积分与 CodeBuddy 同体系）。
+     * 复用 Codex 的 OAuth Bearer 模式：accessToken + refreshToken（单次轮换）。
+     */
+    @Serializable
+    data class WorkBuddyCredential(
+        override val service: ServiceType,
+        val accessToken: String,
+        val refreshToken: String,
+        /** 过期时间（epoch millis），0=未知 */
+        val expiresAt: Long = 0L,
+        override val lastVerifiedAt: Long = 0L
+    ) : Credential()
+
+    /**
+     * 用于 Sub2API（自建 mid 层/聚合面板，任意用户填自己的实例地址）。
+     * 走【用户级】查询：普通用户填实例分配给他的 sk- API Key 即可查余额，无需管理员。
+     * 实测（xxcsn.site）：GET {base}/v1/usage + Authorization: Bearer <apiKey>
+     * 返回 remaining/balance/unit/usage.total.cost/model_stats 等。
+     * 无 API Key 时可用面板邮箱+密码登录换取 Bearer token 作为备选。
+     */
+    @Serializable
+    data class Sub2ApiCredential(
+        override val service: ServiceType,
+        /** 自托管实例基址，如 https://api.example.com（自动去尾斜杠） */
+        val baseUrl: String,
+        /** 面板登录邮箱（无 API Key 的备选认证） */
+        val email: String,
+        /** 面板登录密码（无 API Key 的备选认证） */
+        val password: String,
+        /** 用户级 API Key（sk-…），存在时优先于 email/password 认证 */
+        val apiKey: String? = null,
+        override val lastVerifiedAt: Long = 0L
+    ) : Credential()
 }
 
 /**
diff --git a/app/src/main/java/com/rainy/token/domain/service/ServiceConfigProvider.kt b/app/src/main/java/com/rainy/token/domain/service/ServiceConfigProvider.kt
index 654d686..2dc191c 100644
--- a/app/src/main/java/com/rainy/token/domain/service/ServiceConfigProvider.kt
+++ b/app/src/main/java/com/rainy/token/domain/service/ServiceConfigProvider.kt
@@ -10,6 +10,9 @@ enum class FetchMethod {
     /** WebView 登录后抓取 HTML/内部 JSON API */
     WEBVIEW_SCRAPER,
 
+    /** 用户自托管实例的 REST API（地址在凭据里，如 Sub2API） */
+    SELF_HOSTED_REST,
+
     /** 完全手动输入（已降级） */
     MANUAL
 }
@@ -24,6 +27,8 @@ data class ServiceConfig(
     val loginUrl: String,
     /** 余额/配额的展示单位（如 "¥" / "$" / "Credits" / "requests"） */
     val displayUnit: String,
+    /** 外部操作页 URL（如 DeepSeek 充值页），App 内 WebView 打开，可空 */
+    val externalUrl: String? = null,
     /** 触发降级的连续失败次数阈值（计划 5.4 / 6.3） */
     val degradationFailureThreshold: Int = 3,
     /** Cookie 有效期 < 该值则触发降级（小时） */
@@ -40,7 +45,9 @@ object ServiceConfigProvider {
             type = ServiceType.DEEPSEEK,
             method = FetchMethod.REST_API,
             loginUrl = "", // REST 模式不需要登录 URL
-            displayUnit = "¥"
+            displayUnit = "¥",
+            // App 内 WebView 打开的官方充值页
+            externalUrl = "https://platform.deepseek.com/top_up"
         ),
         ServiceType.OPENCODE_GO to ServiceConfig(
             type = ServiceType.OPENCODE_GO,
@@ -66,6 +73,25 @@ object ServiceConfigProvider {
             method = FetchMethod.WEBVIEW_SCRAPER,
             loginUrl = "https://ollama.com/settings",
             displayUnit = "%"
+        ),
+        ServiceType.TRAE to ServiceConfig(
+            type = ServiceType.TRAE,
+            method = FetchMethod.REST_API,
+            loginUrl = "",
+            displayUnit = "Credits"
+        ),
+        ServiceType.WORKBUDDY to ServiceConfig(
+            type = ServiceType.WORKBUDDY,
+            method = FetchMethod.REST_API,
+            loginUrl = "",
+            displayUnit = "Credits"
+        ),
+        ServiceType.SUB2API to ServiceConfig(
+            type = ServiceType.SUB2API,
+            // 地址在用户填写的凭据里，按自托管实例调用
+            method = FetchMethod.SELF_HOSTED_REST,
+            loginUrl = "",
+            displayUnit = "$"
         )
     )
 
diff --git a/app/src/main/java/com/rainy/token/domain/service/ServiceType.kt b/app/src/main/java/com/rainy/token/domain/service/ServiceType.kt
index 3adad0a..91f4a42 100644
--- a/app/src/main/java/com/rainy/token/domain/service/ServiceType.kt
+++ b/app/src/main/java/com/rainy/token/domain/service/ServiceType.kt
@@ -18,7 +18,10 @@ enum class ServiceType(
     COMMANDCODE_GO("CommandCode", "commandcode_go"),
     DEEPSEEK("DeepSeek", "deepseek"),
     CODEX("Codex / ChatGPT", "codex"),
-    OLLAMA("Ollama", "ollama");
+    OLLAMA("Ollama", "ollama"),
+    TRAE("Trae", "trae"),
+    WORKBUDDY("WorkBuddy", "workbuddy"),
+    SUB2API("Sub2API", "sub2api");
 
     companion object {
         fun fromStorageKey(key: String): ServiceType? =
diff --git a/app/src/main/java/com/rainy/token/domain/usecase/RefreshBalanceUseCase.kt b/app/src/main/java/com/rainy/token/domain/usecase/RefreshBalanceUseCase.kt
index 0fb8b2b..54366b4 100644
--- a/app/src/main/java/com/rainy/token/domain/usecase/RefreshBalanceUseCase.kt
+++ b/app/src/main/java/com/rainy/token/domain/usecase/RefreshBalanceUseCase.kt
@@ -8,6 +8,9 @@ import com.rainy.token.data.repository.OllamaRepository
 import com.rainy.token.data.repository.OpenCodeGoRepository
 import com.rainy.token.data.repository.RefreshWriteSession
 import com.rainy.token.data.repository.RepositoryError
+import com.rainy.token.data.repository.Sub2ApiRepository
+import com.rainy.token.data.repository.TraeRepository
+import com.rainy.token.data.repository.WorkBuddyRepository
 import com.rainy.token.data.repository.retryOnTransientError
 import com.rainy.token.domain.model.ServiceBalance
 import com.rainy.token.domain.model.TriggerSummary
@@ -30,7 +33,10 @@ class RefreshBalanceUseCase @Inject constructor(
     private val openCodeGoRepositoryProvider: Provider<OpenCodeGoRepository>,
     private val commandCodeGoRepositoryProvider: Provider<CommandCodeGoRepository>,
     private val codexRepositoryProvider: Provider<CodexRepository>,
-    private val ollamaRepositoryProvider: Provider<OllamaRepository>
+    private val ollamaRepositoryProvider: Provider<OllamaRepository>,
+    private val traeRepositoryProvider: Provider<TraeRepository>,
+    private val workBuddyRepositoryProvider: Provider<WorkBuddyRepository>,
+    private val sub2ApiRepositoryProvider: Provider<Sub2ApiRepository>
 ) {
     suspend operator fun invoke(service: ServiceType): Result<ServiceBalance> =
         withCredentialSession(service) {
@@ -50,6 +56,15 @@ class RefreshBalanceUseCase @Inject constructor(
                 ServiceType.OLLAMA -> retryOnTransientError {
                     ollamaRepositoryProvider.get().fetchBalance()
                 }
+                ServiceType.TRAE -> retryOnTransientError {
+                    traeRepositoryProvider.get().fetchBalance()
+                }
+                ServiceType.WORKBUDDY -> retryOnTransientError {
+                    workBuddyRepositoryProvider.get().fetchBalance()
+                }
+                ServiceType.SUB2API -> retryOnTransientError {
+                    sub2ApiRepositoryProvider.get().fetchBalance()
+                }
             }
         }
 
diff --git a/app/src/main/java/com/rainy/token/ui/components/ServiceIcon.kt b/app/src/main/java/com/rainy/token/ui/components/ServiceIcon.kt
index e402796..e046271 100644
--- a/app/src/main/java/com/rainy/token/ui/components/ServiceIcon.kt
+++ b/app/src/main/java/com/rainy/token/ui/components/ServiceIcon.kt
@@ -13,8 +13,10 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.compose.material3.Text
 import com.rainy.token.R
 import com.rainy.token.domain.service.ServiceType
 
@@ -117,5 +119,56 @@ fun ServiceIcon(
                 )
             }
         }
+        ServiceType.TRAE -> {
+            LetterIcon(
+                letter = "T",
+                background = Color(0xFF20242E),
+                modifier = modifier,
+                size = size
+            )
+        }
+        ServiceType.WORKBUDDY -> {
+            LetterIcon(
+                letter = "W",
+                background = Color(0xFF3339FF),
+                modifier = modifier,
+                size = size
+            )
+        }
+        ServiceType.SUB2API -> {
+            LetterIcon(
+                letter = "S",
+                background = Color(0xFF6C5CE7),
+                modifier = modifier,
+                size = size
+            )
+        }
+    }
+}
+
+/**
+ * 品牌色字母占位图标。正式 logo（Trae / WorkBuddy / Sub2API）落地后
+ * 在此替换为 drawable 分支（同 DeepSeek 模式）。
+ */
+@Composable
+private fun LetterIcon(
+    letter: String,
+    background: Color,
+    modifier: Modifier,
+    size: Int
+) {
+    Box(
+        modifier = modifier
+            .size(size.dp)
+            .clip(RoundedCornerShape(10.dp))
+            .background(background),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = letter,
+            color = Color.White,
+            fontSize = (size * 0.5f).sp,
+            fontWeight = FontWeight.Bold
+        )
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/rainy/token/ui/settings/CredentialEditScreen.kt b/app/src/main/java/com/rainy/token/ui/settings/CredentialEditScreen.kt
index aee9edb..48e6b0c 100644
--- a/app/src/main/java/com/rainy/token/ui/settings/CredentialEditScreen.kt
+++ b/app/src/main/java/com/rainy/token/ui/settings/CredentialEditScreen.kt
@@ -115,7 +115,38 @@ fun CredentialEditScreen(
                     .padding(16.dp),
                 verticalArrangement = Arrangement.spacedBy(12.dp)
             ) {
-                if (uiState.isApiKeyService) {
+                if (service == ServiceType.TRAE) {
+                    TraeCredentialForm(
+                        jwt = uiState.traeJwt,
+                        region = uiState.traeRegion,
+                        hasExisting = uiState.hasExisting,
+                        onJwtChange = viewModel::updateTraeJwt,
+                        onRegionChange = viewModel::updateTraeRegion,
+                        onSave = viewModel::saveTraeCredential
+                    )
+                } else if (service == ServiceType.WORKBUDDY) {
+                    WorkBuddyCredentialForm(
+                        access = uiState.workBuddyAccess,
+                        refresh = uiState.workBuddyRefresh,
+                        hasExisting = uiState.hasExisting,
+                        onAccessChange = viewModel::updateWorkBuddyAccess,
+                        onRefreshChange = viewModel::updateWorkBuddyRefresh,
+                        onSave = viewModel::saveWorkBuddyCredential
+                    )
+                } else if (service == ServiceType.SUB2API) {
+                    Sub2ApiCredentialForm(
+                        baseUrl = uiState.sub2BaseUrl,
+                        email = uiState.sub2Email,
+                        password = uiState.sub2Password,
+                        apiKey = uiState.sub2ApiKey,
+                        hasExisting = uiState.hasExisting,
+                        onBaseUrlChange = viewModel::updateSub2BaseUrl,
+                        onEmailChange = viewModel::updateSub2Email,
+                        onPasswordChange = viewModel::updateSub2Password,
+                        onApiKeyChange = viewModel::updateSub2ApiKey,
+                        onSave = viewModel::saveSub2ApiCredential
+                    )
+                } else if (uiState.isApiKeyService) {
                 if (service == ServiceType.COMMANDCODE_GO) {
                     CommandCodeGoForm(
                         apiKey = uiState.apiKey,
@@ -676,6 +707,166 @@ private fun ManualCookieForm(
     }
 }
 
+@Composable
+private fun TraeCredentialForm(
+    jwt: String,
+    region: String,
+    hasExisting: Boolean,
+    onJwtChange: (String) -> Unit,
+    onRegionChange: (String) -> Unit,
+    onSave: () -> Unit
+) {
+    Text(text = stringResource(R.string.credential_title_trae), style = MaterialTheme.typography.titleMedium)
+    Text(
+        text = stringResource(R.string.credential_hint_trae),
+        style = MaterialTheme.typography.bodySmall,
+        color = MaterialTheme.colorScheme.outline
+    )
+    OutlinedTextField(
+        value = jwt,
+        onValueChange = onJwtChange,
+        label = { Text(stringResource(R.string.field_trae_jwt)) },
+        singleLine = true,
+        visualTransformation = PasswordVisualTransformation(),
+        modifier = Modifier.fillMaxWidth()
+    )
+    Text(
+        text = stringResource(R.string.field_trae_region),
+        style = MaterialTheme.typography.labelMedium,
+        color = MaterialTheme.colorScheme.outline
+    )
+    Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+        RegionButton(
+            label = stringResource(R.string.option_region_cn),
+            selected = region.uppercase() != "INTL",
+            onSelect = { onRegionChange("CN") }
+        )
+        RegionButton(
+            label = stringResource(R.string.option_region_intl),
+            selected = region.uppercase() == "INTL",
+            onSelect = { onRegionChange("INTL") }
+        )
+    }
+    Button(onClick = onSave, enabled = jwt.isNotBlank(), modifier = Modifier.fillMaxWidth()) {
+        Text(if (hasExisting) stringResource(R.string.action_update) else stringResource(R.string.action_save))
+    }
+}
+
+@Composable
+private fun RegionButton(label: String, selected: Boolean, onSelect: () -> Unit) {
+    OutlinedButton(onClick = onSelect) {
+        Text(
+            text = label,
+            color = if (selected) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.onSurface
+        )
+    }
+}
+
+@Composable
+private fun WorkBuddyCredentialForm(
+    access: String,
+    refresh: String,
+    hasExisting: Boolean,
+    onAccessChange: (String) -> Unit,
+    onRefreshChange: (String) -> Unit,
+    onSave: () -> Unit
+) {
+    Text(text = stringResource(R.string.credential_title_workbuddy), style = MaterialTheme.typography.titleMedium)
+    Text(
+        text = stringResource(R.string.credential_hint_workbuddy),
+        style = MaterialTheme.typography.bodySmall,
+        color = MaterialTheme.colorScheme.outline
+    )
+    OutlinedTextField(
+        value = access,
+        onValueChange = onAccessChange,
+        label = { Text(stringResource(R.string.field_workbuddy_access)) },
+        singleLine = true,
+        visualTransformation = PasswordVisualTransformation(),
+        modifier = Modifier.fillMaxWidth()
+    )
+    OutlinedTextField(
+        value = refresh,
+        onValueChange = onRefreshChange,
+        label = { Text(stringResource(R.string.field_workbuddy_refresh)) },
+        singleLine = true,
+        visualTransformation = PasswordVisualTransformation(),
+        modifier = Modifier.fillMaxWidth()
+    )
+    Button(onClick = onSave, enabled = access.isNotBlank() && refresh.isNotBlank(), modifier = Modifier.fillMaxWidth()) {
+        Text(if (hasExisting) stringResource(R.string.action_update) else stringResource(R.string.action_save))
+    }
+}
+
+@Composable
+private fun Sub2ApiCredentialForm(
+    baseUrl: String,
+    email: String,
+    password: String,
+    apiKey: String,
+    hasExisting: Boolean,
+    onBaseUrlChange: (String) -> Unit,
+    onEmailChange: (String) -> Unit,
+    onPasswordChange: (String) -> Unit,
+    onApiKeyChange: (String) -> Unit,
+    onSave: () -> Unit
+) {
+    Text(text = stringResource(R.string.credential_title_sub2api), style = MaterialTheme.typography.titleMedium)
+    Text(
+        text = stringResource(R.string.credential_hint_sub2api),
+        style = MaterialTheme.typography.bodySmall,
+        color = MaterialTheme.colorScheme.outline
+    )
+    OutlinedTextField(
+        value = baseUrl,
+        onValueChange = onBaseUrlChange,
+        label = { Text(stringResource(R.string.field_sub2_base_url)) },
+        placeholder = { Text(stringResource(R.string.placeholder_sub2_base_url)) },
+        singleLine = true,
+        modifier = Modifier.fillMaxWidth()
+    )
+    Text(
+        text = stringResource(R.string.sub2_auth_header),
+        style = MaterialTheme.typography.labelMedium,
+        color = MaterialTheme.colorScheme.outline
+    )
+    OutlinedTextField(
+        value = apiKey,
+        onValueChange = onApiKeyChange,
+        label = { Text(stringResource(R.string.field_sub2_api_key)) },
+        singleLine = true,
+        visualTransformation = PasswordVisualTransformation(),
+        modifier = Modifier.fillMaxWidth()
+    )
+    Text(
+        text = stringResource(R.string.sub2_or_account),
+        style = MaterialTheme.typography.labelMedium,
+        color = MaterialTheme.colorScheme.outline
+    )
+    OutlinedTextField(
+        value = email,
+        onValueChange = onEmailChange,
+        label = { Text(stringResource(R.string.field_sub2_email)) },
+        singleLine = true,
+        modifier = Modifier.fillMaxWidth()
+    )
+    OutlinedTextField(
+        value = password,
+        onValueChange = onPasswordChange,
+        label = { Text(stringResource(R.string.field_sub2_password)) },
+        singleLine = true,
+        visualTransformation = PasswordVisualTransformation(),
+        modifier = Modifier.fillMaxWidth()
+    )
+    Button(
+        onClick = onSave,
+        enabled = baseUrl.isNotBlank() && (apiKey.isNotBlank() || (email.isNotBlank() && password.isNotBlank())),
+        modifier = Modifier.fillMaxWidth()
+    ) {
+        Text(if (hasExisting) stringResource(R.string.action_update) else stringResource(R.string.action_save))
+    }
+}
+
 private fun copyToClipboard(context: Context, text: String) {
     val cm = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
     cm.setPrimaryClip(ClipData.newPlainText("login_url", text))
diff --git a/app/src/main/java/com/rainy/token/ui/settings/CredentialEditViewModel.kt b/app/src/main/java/com/rainy/token/ui/settings/CredentialEditViewModel.kt
index 8c18888..0251c8c 100644
--- a/app/src/main/java/com/rainy/token/ui/settings/CredentialEditViewModel.kt
+++ b/app/src/main/java/com/rainy/token/ui/settings/CredentialEditViewModel.kt
@@ -92,6 +92,14 @@ class CredentialEditViewModel @Inject constructor(
                     } else "",
                     ollamaCookie = (existing as? Credential.SessionCredential)?.ollamaCookie.orEmpty(),
                     triggerApiKey = (existing as? Credential.SessionCredential)?.apiKey.orEmpty(),
+                    traeJwt = (existing as? Credential.TraeCredential)?.jwt.orEmpty(),
+                    traeRegion = (existing as? Credential.TraeCredential)?.region ?: "CN",
+                    workBuddyAccess = (existing as? Credential.WorkBuddyCredential)?.accessToken.orEmpty(),
+                    workBuddyRefresh = (existing as? Credential.WorkBuddyCredential)?.refreshToken.orEmpty(),
+                    sub2BaseUrl = (existing as? Credential.Sub2ApiCredential)?.baseUrl.orEmpty(),
+                    sub2Email = (existing as? Credential.Sub2ApiCredential)?.email.orEmpty(),
+                    sub2Password = (existing as? Credential.Sub2ApiCredential)?.password.orEmpty(),
+                    sub2ApiKey = (existing as? Credential.Sub2ApiCredential)?.apiKey.orEmpty(),
                     hasExisting = existing != null
                 )
             }
@@ -240,6 +248,123 @@ class CredentialEditViewModel @Inject constructor(
         }
     }
 
+    // ---------- Trae ----------
+
+    fun updateTraeJwt(value: String) {
+        _uiState.update { it.copy(traeJwt = value) }
+    }
+
+    fun updateTraeRegion(value: String) {
+        _uiState.update { it.copy(traeRegion = value) }
+    }
+
+    fun saveTraeCredential() {
+        val type = serviceType ?: return
+        val current = _uiState.value
+        val jwt = current.traeJwt.trim()
+        if (jwt.isBlank()) {
+            _uiState.update { it.copy(message = UiText.Resource(R.string.error_api_key_empty)) }
+            return
+        }
+        viewModelScope.launch {
+            val existing = credentialRepository.get(type) as? Credential.TraeCredential
+            credentialRepository.save(
+                (existing ?: Credential.TraeCredential(service = type, jwt = jwt, region = "CN")).copy(
+                    jwt = jwt,
+                    region = if (current.traeRegion.uppercase() == "INTL") "INTL" else "CN",
+                    lastVerifiedAt = existing?.lastVerifiedAt ?: 0L
+                )
+            )
+            _uiState.update {
+                it.copy(hasExisting = true, message = UiText.Resource(R.string.msg_credentials_saved))
+            }
+        }
+    }
+
+    // ---------- WorkBuddy ----------
+
+    fun updateWorkBuddyAccess(value: String) {
+        _uiState.update { it.copy(workBuddyAccess = value) }
+    }
+
+    fun updateWorkBuddyRefresh(value: String) {
+        _uiState.update { it.copy(workBuddyRefresh = value) }
+    }
+
+    fun saveWorkBuddyCredential() {
+        val type = serviceType ?: return
+        val current = _uiState.value
+        val access = current.workBuddyAccess.trim()
+        val refresh = current.workBuddyRefresh.trim()
+        if (access.isBlank() || refresh.isBlank()) {
+            _uiState.update { it.copy(message = UiText.Resource(R.string.error_workbuddy_tokens_required)) }
+            return
+        }
+        viewModelScope.launch {
+            val existing = credentialRepository.get(type) as? Credential.WorkBuddyCredential
+            credentialRepository.save(
+                (existing ?: Credential.WorkBuddyCredential(service = type, accessToken = access, refreshToken = refresh))
+                    .copy(
+                        accessToken = access,
+                        refreshToken = refresh,
+                        expiresAt = existing?.expiresAt ?: 0L,
+                        lastVerifiedAt = existing?.lastVerifiedAt ?: 0L
+                    )
+            )
+            _uiState.update {
+                it.copy(hasExisting = true, message = UiText.Resource(R.string.msg_credentials_saved))
+            }
+        }
+    }
+
+    // ---------- Sub2API ----------
+
+    fun updateSub2BaseUrl(value: String) {
+        _uiState.update { it.copy(sub2BaseUrl = value) }
+    }
+
+    fun updateSub2Email(value: String) {
+        _uiState.update { it.copy(sub2Email = value) }
+    }
+
+    fun updateSub2Password(value: String) {
+        _uiState.update { it.copy(sub2Password = value) }
+    }
+
+    fun updateSub2ApiKey(value: String) {
+        _uiState.update { it.copy(sub2ApiKey = value) }
+    }
+
+    fun saveSub2ApiCredential() {
+        val type = serviceType ?: return
+        val current = _uiState.value
+        val base = current.sub2BaseUrl.trim()
+        val apiKey = current.sub2ApiKey.trim()
+        val email = current.sub2Email.trim()
+        val password = current.sub2Password.trim()
+        // 实例地址必填；认证需 API Key，或（邮箱+密码）二选一路径
+        if (base.isBlank() || (apiKey.isBlank() && (email.isBlank() || password.isBlank()))) {
+            _uiState.update { it.copy(message = UiText.Resource(R.string.error_sub2_required)) }
+            return
+        }
+        viewModelScope.launch {
+            val existing = credentialRepository.get(type) as? Credential.Sub2ApiCredential
+            credentialRepository.save(
+                (existing ?: Credential.Sub2ApiCredential(service = type, baseUrl = base, email = email, password = password))
+                    .copy(
+                        baseUrl = base,
+                        email = email,
+                        password = password,
+                        apiKey = apiKey,
+                        lastVerifiedAt = existing?.lastVerifiedAt ?: 0L
+                    )
+            )
+            _uiState.update {
+                it.copy(hasExisting = true, message = UiText.Resource(R.string.msg_credentials_saved))
+            }
+        }
+    }
+
     /** 把 API Key 缩成 'sk-a***xyz' 这种形式，前 4 后 4，中间用 *** 代替。 */
     private fun maskedKeyPreview(key: String): UiText {
         if (key.length <= 8) {
@@ -572,8 +697,17 @@ class CredentialEditViewModel @Inject constructor(
                     authCookie = "",
                     workspaceId = "",
                     cookieCount = 0,
+                    codexAuthJson = "",
                     ollamaCookie = "",
-                    triggerApiKey = ""
+                    triggerApiKey = "",
+                    traeJwt = "",
+                    traeRegion = "CN",
+                    workBuddyAccess = "",
+                    workBuddyRefresh = "",
+                    sub2BaseUrl = "",
+                    sub2Email = "",
+                    sub2Password = "",
+                    sub2ApiKey = ""
                 )
             }
         }
@@ -651,5 +785,16 @@ data class CredentialEditUiState(
     val ollamaCookie: String = "",
     /** OCGO / Ollama 的一键激活用量 API Key */
     val triggerApiKey: String = "",
+    /** Trae：Cloud-IDE-JWT + 区域 */
+    val traeJwt: String = "",
+    val traeRegion: String = "CN",
+    /** WorkBuddy：OAuth tokens */
+    val workBuddyAccess: String = "",
+    val workBuddyRefresh: String = "",
+    /** Sub2API：自托管实例连接 */
+    val sub2BaseUrl: String = "",
+    val sub2Email: String = "",
+    val sub2Password: String = "",
+    val sub2ApiKey: String = "",
     val message: UiText? = null
 )