feat(checkin): 签到语义化结果 + 多语言 + 轮换/并发安全

- Repository 改为返回语义化 CheckinOutcome（不再直出硬编码中文），
  UI 经 UiText 按 Locale 解析；补齐三语言文案（含连签/需配置凭据/已签禁用态）
- WorkBuddy authedPost 改 sealed 结果：失败也回传轮换出的新 token，
  多候选路径共享轮换状态，避免旧 refreshToken 单次消费后卡死（永久 401）
- 签到的凭据写入改走 RefreshBalanceUseCase.withCredentialSession，
  按快照校验提交，避免并发改凭据被旧快照覆盖（lost update）
- Trae 仅在实际被服务端接受时才标记 lastVerifiedAt（400 业务失败不标记）
- DEVICE_BLOCKED 改用 Notice 态：不置灰按钮，与「今日已签到」语义区分
- 新增 TraeRepositoryTest(10) / WorkBuddyRepositoryTest(5)，纯 JVM 解析用例

app/src/main/java/com/rainy/token/data/repository/TraeRepository.kt

@@ -195,13 +195,32 @@ class TraeRepository constructor(
 
     // ---------- 每日签到（checkin_credits）----------
 
+    /** 签到动作语义结果（UI 层据此本地化，不直接展示 Repository 中文串）。 */
+    enum class CheckinOutcome {
+        /** 签到成功 */
+        SUCCESS,
+        /** 今日已签到（账号级，幂等） */
+        ALREADY,
+        /** 设备级拦截（提示而非报错） */
+        DEVICE_BLOCKED,
+        /** INTL 区签到接口未实测，暂不支持 */
+        INTL_UNSUPPORTED,
+        /** 其他失败（服务端给了原因/错误码） */
+        FAILED
+    }
+
     /** 签到结果（来源：trae-check 实测字段与语义）。 */
     data class CheckinResult(
         val success: Boolean,
         /** 今日已签（账号级，非设备拦截） */
         val alreadyChecked: Boolean,
         val points: Long,
-        val message: String
+        /** 服务端原始提示文案（仅作 [outcome] 之外的补充透传） */
+        val message: String,
+        /** 动作语义结果：UI 按此本地化，不依赖 [message] 语言 */
+        val outcome: CheckinOutcome,
+        /** 服务端错误码（outcome=FAILED 时可能有；-1 表示未提供） */
+        val code: Long = -1L
     )
 
     /**
@@ -222,7 +241,13 @@ class TraeRepository constructor(
         val regionKey = credential.region.uppercase().takeIf { it == "INTL" } ?: "CN"
         if (regionKey == "INTL") {
             return@withContext Result.success(
-                CheckinResult(false, false, 0, "INTL 区签到接口暂未支持，请用 CN 区账号")
+                CheckinResult(
+                    success = false,
+                    alreadyChecked = false,
+                    points = 0,
+                    message = "",
+                    outcome = CheckinOutcome.INTL_UNSUPPORTED
+                )
             )
         }
         val request = Request.Builder()
@@ -251,35 +276,16 @@ class TraeRepository constructor(
             return@withContext Result.failure(RepositoryError.Unknown(e))
         }
 
-        parseCheckin(body)
+        // 仅「凭据被服务端接受」时才算已验证：SUCCESS/ALREADY/DEVICE_BLOCKED 都说明
-    }
+        // JWT 有效（401/403 已在上面提前返回）；FAILED（含 HTTP 400 业务失败）不标记，
-
+        // 避免把无效凭据误标为已验证。
-    /** 解析 claim 响应（code/message/points 多候选；语义判断见 checkIn 注释）。 */
+        val parsed = parseCheckin(body)
-    private fun parseCheckin(body: String): Result<CheckinResult> = runCatching {
+        val outcome = parsed.getOrNull()?.outcome
-        val root = json.parseToJsonElement(body).jsonObject
+        if (outcome != null && outcome != CheckinOutcome.FAILED) {
-        val data = root["data"]?.jsonObject ?: root
+            credentialRepository.save(credential.copy(lastVerifiedAt = System.currentTimeMillis()))
-        val code = data.numberOr("code")?.toLong() ?: root.numberOr("code")?.toLong() ?: -1L
-        val msg = data.scalarOr("message", "msg") ?: root.scalarOr("message", "msg") ?: ""
-        val points = (data.numberOr("points") ?: root.numberOr("points"))?.toLong() ?: 0L
-
-        val succeeded = code == 0L || code == 200L
-        val lowerMsg = msg.lowercase()
-        val deviceBlock = msg.contains("设备") || lowerMsg.contains("device") || lowerMsg.contains("machine")
-        val already = code == 1001L || (!deviceBlock && (
-            msg.contains("已签到") || msg.contains("已经签到") || msg.contains("明日再来") ||
-                msg.contains("今日已完成") || msg.contains("已领取") ||
-                lowerMsg.contains("already") || lowerMsg.contains("checked") || lowerMsg.contains("claimed")
-            ))
-
-        when {
-            succeeded -> Result.success(
-                CheckinResult(true, false, points.takeIf { it > 0 } ?: 200L, msg.ifBlank { "签到成功" })
-            )
-            already -> Result.success(CheckinResult(true, true, 0L, "今日已签到"))
-            deviceBlock -> Result.success(CheckinResult(false, false, 0L, msg.ifBlank { "该设备今日签到次数已达上限" }))
-            else -> Result.success(CheckinResult(false, false, 0L, msg.ifBlank { "签到失败（code=" + code + "）" }))
         }
-    }.getOrElse { Result.failure(RepositoryError.Unknown(it)) }
+        parsed
+    }
 
     /** 由 JWT 派生稳定伪 deviceId：同账号恒定、不同账号不同（防 claim 设备级去重误伤）。 */
     private fun stableDeviceId(seed: String): String = runCatching {
@@ -288,13 +294,6 @@ class TraeRepository constructor(
         digest.take(12).joinToString("") { "%02x".format(it) }
     }.getOrDefault("rainytoken-device")
 
-    private fun JsonObject.scalarOr(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): RepositoryError = when (code) {
         401, 403 -> RepositoryError.InvalidCredential()
         429 -> RepositoryError.RateLimited()
@@ -315,4 +314,75 @@ class TraeRepository constructor(
         val totalQuota: Double?,
         val extras: Map<String, String>
     )
+
+    companion object {
+        /** 解析专用 Json（companion 内独立持有，使 parseCheckin 可静态调用/单测）。 */
+        private val parseJson = Json { ignoreUnknownKeys = true }
+
+        /**
+         * 解析 claim 响应（code/message/points 多候选）。
+         *
+         * 语义判定（实测口径）：
+         * - code 0/200 → SUCCESS；code 1001 或文案含「已签到/already/claimed」→ ALREADY；
+         * - 文案含「设备/device/machine」→ DEVICE_BLOCKED（设备级拦截，优先级高于 already，避免误报已签）；
+         * - 其余 → FAILED 并回传 code。
+         *
+         * 放在 companion 内以便单测直接调用（不依赖 OkHttp/凭据）。
+         */
+        internal fun parseCheckin(body: String): Result<CheckinResult> = runCatching {
+            val root = parseJson.parseToJsonElement(body).jsonObject
+            val data = root["data"]?.jsonObject ?: root
+            val code = data.numberOr("code")?.toLong() ?: root.numberOr("code")?.toLong() ?: -1L
+            val msg = data.scalarOr("message", "msg") ?: root.scalarOr("message", "msg") ?: ""
+            val points = (data.numberOr("points") ?: root.numberOr("points"))?.toLong() ?: 0L
+
+            val succeeded = code == 0L || code == 200L
+            val lowerMsg = msg.lowercase()
+            val deviceBlock = msg.contains("设备") || lowerMsg.contains("device") || lowerMsg.contains("machine")
+            val already = code == 1001L || (!deviceBlock && (
+                msg.contains("已签到") || msg.contains("已经签到") || msg.contains("明日再来") ||
+                    msg.contains("今日已完成") || msg.contains("已领取") ||
+                    lowerMsg.contains("already") || lowerMsg.contains("checked") || lowerMsg.contains("claimed")
+                ))
+
+            when {
+                succeeded -> Result.success(
+                    CheckinResult(
+                        success = true,
+                        alreadyChecked = false,
+                        points = points.takeIf { it > 0 } ?: 200L,
+                        message = msg,
+                        outcome = CheckinOutcome.SUCCESS
+                    )
+                )
+                already -> Result.success(
+                    CheckinResult(true, true, 0L, msg, CheckinOutcome.ALREADY)
+                )
+                deviceBlock -> Result.success(
+                    CheckinResult(false, false, 0L, msg, CheckinOutcome.DEVICE_BLOCKED)
+                )
+                else -> Result.success(
+                    CheckinResult(false, false, 0L, msg, CheckinOutcome.FAILED, code)
+                )
+            }
+        }.getOrElse { Result.failure(RepositoryError.Unknown(it)) }
+
+        private fun JsonObject.scalarOr(vararg keys: String): String? {
+            for (key in keys) {
+                this[key]?.jsonPrimitive?.contentOrNull?.takeIf { it.isNotBlank() }?.let { return it }
+            }
+            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
+        }
+    }
 }

app/src/main/java/com/rainy/token/data/repository/WorkBuddyRepository.kt

@@ -282,6 +282,18 @@ class WorkBuddyRepository constructor(
 
     // ---------- 每日签到（Buddy 加油站 / codebuddy.cn）----------
 
+    /** 签到动作语义结果（UI 层据此本地化，不直接展示 Repository 中文串）。 */
+    enum class CheckinOutcome {
+        /** 查询模式：只读状态，无动作结果 */
+        QUERY,
+        /** 签到成功 */
+        SUCCESS,
+        /** 今日已签到（幂等） */
+        ALREADY,
+        /** 签到失败（服务端给了原因，见 message） */
+        FAILED
+    }
+
     /**
      * 签到状态摘要（来源：cpa-multi-plugins workbuddy 插件实测字段）。
      * active=活动进行中；todayCheckedIn=今日已签；streakDays=连签；daily/todayCredit=每日/今日积分。
@@ -293,8 +305,10 @@ class WorkBuddyRepository constructor(
         val dailyCredit: Long,
         val todayCredit: Long,
         val activityName: String,
-        /** 签到动作后的提示（签到成功/今日已签）；查询模式为空串 */
+        /** 服务端原始提示文案（可能是中文/英文；仅作 [outcome] 之外的补充透传） */
-        val message: String = ""
+        val message: String = "",
+        /** 动作语义结果：UI 按此本地化，不依赖 [message] 语言 */
+        val outcome: CheckinOutcome = CheckinOutcome.QUERY
     )
 
     /** 查询今日签到状态。uid 未知时省略 X-User-Id 头（源码确认该头可选）。 */
@@ -305,9 +319,12 @@ class WorkBuddyRepository constructor(
             return@withContext Result.failure(RepositoryError.InvalidCredential())
         }
         // 两条候选路径 fallback（cpa-plugin 实测：activity-status 优先，旧路径 checkin-status 兜底）
-        val body = authedPost(credential, "/v2/billing/meter/checkin-activity-status")
+        // 共享轮换状态：前一条路径轮换出的新 token 会用于下一条，且失败也先落库。
-            ?: authedPost(credential, "/v2/billing/meter/checkin-status")
+        val body = authedPostFirstSuccessful(
-            ?: return@withContext Result.failure(RepositoryError.Unknown())
+            credential,
+            "/v2/billing/meter/checkin-activity-status",
+            "/v2/billing/meter/checkin-status"
+        ) ?: return@withContext Result.failure(RepositoryError.Unknown())
         runCatching { parseCheckin(body) }.fold(
             onSuccess = { Result.success(it) },
             onFailure = {
@@ -331,8 +348,20 @@ class WorkBuddyRepository constructor(
         if (credential !is Credential.WorkBuddyCredential) {
             return@withContext Result.failure(RepositoryError.InvalidCredential())
         }
-        val body = authedPost(credential, "/v2/billing/meter/daily-checkin")
+        val body = when (val r = authedPost(credential, "/v2/billing/meter/daily-checkin")) {
-            ?: return@withContext Result.failure(RepositoryError.Unknown())
+            is AuthedPostResult.Ok -> {
+                persistCheckinOutcome(credential, r.rotatedCredential)
+                r.body
+            }
+            is AuthedPostResult.Failed -> {
+                // 即便签到请求失败，也必须先落库轮换出的新 token，否则账号卡在死 token 上；
+                // 但未发生轮换（纯网络失败）时不写入——避免把失败请求误标为「刚验证通过」。
+                if (r.rotatedCredential != null) {
+                    persistCheckinOutcome(credential, r.rotatedCredential)
+                }
+                return@withContext Result.failure(RepositoryError.Unknown())
+            }
+        }
         val code = runCatching {
             val root = json.parseToJsonElement(body).jsonObject
             val obj = root["data"]?.jsonObject ?: root
@@ -341,26 +370,60 @@ class WorkBuddyRepository constructor(
         val status = fetchCheckinStatus().getOrNull()
         when {
             code == 0L -> Result.success(
-                status?.copy(message = "签到成功 +" + (status.todayCredit.takeIf { it > 0 } ?: status.dailyCredit) + " 积分")
+                (status ?: CheckinStatus(true, true, 1, 0, 0, "")).copy(
-                    ?: CheckinStatus(true, true, 1, 0, 0, "", "签到成功")
+                    outcome = CheckinOutcome.SUCCESS
+                )
+            )
+            code == 10001L -> Result.success(
+                (status ?: CheckinStatus(true, true, 0, 0, 0, "")).copy(
+                    outcome = CheckinOutcome.ALREADY
+                )
             )
-            code == 10001L -> Result.success(status?.copy(message = "今日已签到") ?: CheckinStatus(true, true, 0, 0, 0, "", "今日已签到"))
             else -> {
                 val msg = runCatching {
                     val root = json.parseToJsonElement(body).jsonObject
                     val obj = root["data"]?.jsonObject ?: root
                     obj.scalar("msg", "message", "Message") ?: ""
                 }.getOrDefault("")
-                if (status != null) Result.success(status.copy(message = if (msg.isBlank()) "签到失败" else msg))
+                if (status != null) {
-                else Result.failure(RepositoryError.Unknown())
+                    Result.success(status.copy(message = msg, outcome = CheckinOutcome.FAILED))
+                } else {
+                    Result.failure(RepositoryError.Unknown())
+                }
             }
         }
     }
 
-    /** 带自动 refresh 一次的 POST（Bearer）；返回响应体，失败 null。 */
+    /**
-    private fun authedPost(credential: Credential.WorkBuddyCredential, path: String): String? {
+     * [authedPost] 的结果。
+     *
+     * [rotatedCredential] 一旦非空，表示服务端已作废旧 accessToken（新的 access/refresh
+     * 已轮换），调用方**必须**先落库再决定后续动作——即使本次请求最终失败，也不能丢弃它，
+     * 否则旧 refreshToken 单次消费后失效，账号会卡在死 token 上（永久 401）。
+     */
+    private sealed interface AuthedPostResult {
+        val rotatedCredential: Credential.WorkBuddyCredential?
+
+        /** 请求成功（2xx），[body] 为响应体。 */
+        data class Ok(
+            val body: String,
+            override val rotatedCredential: Credential.WorkBuddyCredential?
+        ) : AuthedPostResult
+
+        /** 请求失败，但过程中发生过 token 轮换（新凭据必须落库）。 */
+        data class Failed(
+            override val rotatedCredential: Credential.WorkBuddyCredential?
+        ) : AuthedPostResult
+    }
+
+    /**
+     * 带自动 refresh 一次的 POST（Bearer）。
+     * 失败时若已发生轮换，会以 [AuthedPostResult.Failed] 回传新凭据（不丢轮换结果）。
+     */
+    private fun authedPost(credential: Credential.WorkBuddyCredential, path: String): AuthedPostResult {
         var access = credential.accessToken
         var refresh = credential.refreshToken
+        var rotated: Credential.WorkBuddyCredential? = null
         repeat(2) { attempt ->
             val request = Request.Builder()
                 .url("https://www.codebuddy.cn" + path)
@@ -372,44 +435,72 @@ class WorkBuddyRepository constructor(
             val resp = try {
                 okHttpClient.newCall(request).execute()
             } catch (_: Throwable) {
-                return null
+                return AuthedPostResult.Failed(rotated)
             }
             val code = resp.code
             val body = runCatching { resp.body?.string().orEmpty() }.getOrDefault("")
             resp.close()
             when {
-                code in 200..299 -> return body
+                code in 200..299 -> return AuthedPostResult.Ok(body, rotated)
                 (code == 401 || code == 403) && attempt == 0 -> {
-                    val refreshed = tryRefesh(refresh) ?: return null
+                    val refreshed = tryRefesh(refresh) ?: return AuthedPostResult.Failed(rotated)
-                    // 轮换后的凭据由调用方主流程 save（此处仅内存内继续），避免半途改库
+                    val expiresAt = if (refreshed.expiresIn > 0) {
+                        System.currentTimeMillis() + refreshed.expiresIn * 1000
+                    } else {
+                        credential.expiresAt.coerceAtLeast(System.currentTimeMillis())
+                    }
+                    rotated = credential.copy(
+                        accessToken = refreshed.accessToken,
+                        refreshToken = refreshed.refreshToken,
+                        expiresAt = expiresAt
+                    )
                     access = refreshed.accessToken
                     refresh = refreshed.refreshToken
                 }
-                else -> return null
+                else -> return AuthedPostResult.Failed(rotated)
+            }
+        }
+        return AuthedPostResult.Failed(rotated)
+    }
+
+    /**
+     * 候选路径 fallback 专用：依次尝试各路径，但**同一次查询内共享轮换状态**——
+     * 若前一条路径已轮换 token，后续路径必须用新 accessToken 请求，并把轮换结果
+     * 落库后再返回，避免旧 token 重试直接失败。
+     */
+    private suspend fun authedPostFirstSuccessful(
+        credential: Credential.WorkBuddyCredential,
+        vararg paths: String
+    ): String? {
+        var current = credential
+        for (path in paths) {
+            when (val r = authedPost(current, path)) {
+                is AuthedPostResult.Ok -> {
+                    persistCheckinOutcome(credential, r.rotatedCredential)
+                    return r.body
+                }
+                is AuthedPostResult.Failed -> {
+                    // 即便本路径失败，也要先把轮换出的新 token 落库并继续用新 token 试下一条
+                    if (r.rotatedCredential != null) {
+                        persistCheckinOutcome(credential, r.rotatedCredential)
+                        current = r.rotatedCredential
+                    }
+                }
             }
         }
         return null
     }
 
-    /** 解析 checkin-activity-status 响应（data 平铺或 data 包裹，防御式多候选）。 */
+    /**
-    private fun parseCheckin(body: String): CheckinStatus {
+     * 落库本次签到/状态查询产出：轮换后的 token（若有）+ lastVerifiedAt。
-        val root = json.parseToJsonElement(body).jsonObject
+     * 与 [fetchBalance] 同款语义——一次成功请求即视为凭据已验证。
-        val obj = root["data"]?.jsonObject ?: root
+     */
-        return CheckinStatus(
+    private suspend fun persistCheckinOutcome(
-            active = obj.scalar("active", "Active")?.toBoolean() ?: true,
+        credential: Credential.WorkBuddyCredential,
-            todayCheckedIn = obj.scalar("today_checked_in", "todayCheckedIn")?.toBoolean() ?: false,
+        rotated: Credential.WorkBuddyCredential?
-            streakDays = obj.longOr("streak_days", "streakDays") ?: 0,
+    ) {
-            dailyCredit = obj.longOr("daily_credit", "dailyCredit") ?: 0,
+        val base = rotated ?: credential
-            todayCredit = obj.longOr("today_credit", "todayCredit") ?: 0,
+        credentialRepository.save(base.copy(lastVerifiedAt = System.currentTimeMillis()))
-            activityName = obj.scalar("activity_name", "activityName", "theme_name") ?: ""
-        )
-    }
-
-    private fun JsonObject.longOr(vararg keys: String): Long? {
-        for (key in keys) {
-            this[key]?.jsonPrimitive?.contentOrNull?.toLongOrNull()?.let { return it }
-        }
-        return null
     }
 
     private fun mapHttpError(code: Int, body: String): RepositoryError = when (code) {
@@ -433,4 +524,40 @@ class WorkBuddyRepository constructor(
         val unit: String?,
         val extras: Map<String, String>
     )
+
+    companion object {
+        /** 解析专用 Json（companion 内独立持有，使 parseCheckin 可静态调用/单测）。 */
+        private val parseJson = Json { ignoreUnknownKeys = true }
+
+        /**
+         * 解析 checkin 响应（data 平铺或 data 包裹，防御式多候选）。
+         * 放在 companion 内以便单测直接调用（不依赖 OkHttp/凭据）。
+         */
+        internal fun parseCheckin(body: String): CheckinStatus {
+            val root = parseJson.parseToJsonElement(body).jsonObject
+            val obj = root["data"]?.jsonObject ?: root
+            return CheckinStatus(
+                active = obj.scalar("active", "Active")?.toBoolean() ?: true,
+                todayCheckedIn = obj.scalar("today_checked_in", "todayCheckedIn")?.toBoolean() ?: false,
+                streakDays = obj.longOr("streak_days", "streakDays") ?: 0,
+                dailyCredit = obj.longOr("daily_credit", "dailyCredit") ?: 0,
+                todayCredit = obj.longOr("today_credit", "todayCredit") ?: 0,
+                activityName = obj.scalar("activity_name", "activityName", "theme_name") ?: ""
+            )
+        }
+
+        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 JsonObject.longOr(vararg keys: String): Long? {
+            for (key in keys) {
+                this[key]?.jsonPrimitive?.contentOrNull?.toLongOrNull()?.let { return it }
+            }
+            return null
+        }
+    }
 }

app/src/main/java/com/rainy/token/domain/usecase/RefreshBalanceUseCase.kt

@@ -92,6 +92,29 @@ class RefreshBalanceUseCase @Inject constructor(
             ollamaRepositoryProvider.get().triggerUsage(model)
         }
 
+    /**
+     * 执行每日签到（TRAE / WORKBUDDY），返回各自的语义结果类型。
+     *
+     * 必须走 [withCredentialSession]：签到会触发 OAuth 轮换（WorkBuddy 401/403 时刷新
+     * access/refresh），轮换结果需按凭据快照校验后提交，避免并发改凭据被旧快照覆盖；
+     * 同时会话内重试才能读到已轮换的新 token（否则旧 refreshToken 单次消费后直接失效）。
+     */
+    suspend fun checkInWorkBuddy(): Result<WorkBuddyRepository.CheckinStatus> =
+        withCredentialSession(ServiceType.WORKBUDDY) {
+            workBuddyRepositoryProvider.get().checkIn()
+        }
+
+    suspend fun checkInTrae(): Result<TraeRepository.CheckinResult> =
+        withCredentialSession(ServiceType.TRAE) {
+            traeRepositoryProvider.get().checkIn()
+        }
+
+    /** 查询今日签到状态（仅 WORKBUDDY 有该接口）。走会话以保证状态查询的凭据写入不覆盖并发编辑。 */
+    suspend fun fetchCheckinStatus(): Result<WorkBuddyRepository.CheckinStatus> =
+        withCredentialSession(ServiceType.WORKBUDDY) {
+            workBuddyRepositoryProvider.get().fetchCheckinStatus()
+        }
+
     private suspend fun <T> withCredentialSession(
         service: ServiceType,
         block: suspend () -> Result<T>

app/src/main/java/com/rainy/token/ui/servicedetail/ServiceDetailScreen.kt

@@ -117,6 +117,8 @@ fun ServiceDetailScreen(
     val selectedModel by viewModel.selectedModel.collectAsStateWithLifecycle()
     val modelsLoading by viewModel.modelsLoading.collectAsStateWithLifecycle()
     val checkinState by viewModel.checkinState.collectAsStateWithLifecycle()
+    val checkinInfo by viewModel.checkinInfo.collectAsStateWithLifecycle()
+
     // 面板管理（Key/分组/兑换）已移到首页 Sub2API 卡片的「面板管理」入口，
     // 详情页只保留用量明细所需的窗口统计状态。
     val panelWindowStats by viewModel.panelWindowStats.collectAsStateWithLifecycle()
@@ -193,11 +195,18 @@ fun ServiceDetailScreen(
                 ServiceType.TRAE,
                 ServiceType.WORKBUDDY -> {
                     // 每日签到卡（WorkBuddy/Trae 共用）；下方仍展示通用 extras
+                    // 未配置凭据时展示引导卡，避免暴露必然失败的签到按钮
                     item {
-                        CheckinCard(
+                        if (uiState.hasCredential) {
-                            state = checkinState,
+                            CheckinCard(
-                            onCheckin = { viewModel.checkin() }
+                                state = checkinState,
-                        )
+                                todayCheckedIn = checkinInfo?.todayCheckedIn == true,
+                                streakDays = checkinInfo?.streakDays ?: 0L,
+                                onCheckin = { viewModel.checkin() }
+                            )
+                        } else {
+                            CheckinNeedCredentialCard()
+                        }
                     }
                     item { GenericExtrasCard(uiState.state) }
                 }
@@ -1098,7 +1107,13 @@ private fun BreakdownRow(label: String, value: Double, unit: String) {
  * 结果消息直接采用官方响应语义（签到成功/今日已签到/设备拦截/失败原因）。
  */
 @Composable
-private fun CheckinCard(state: CheckinState, onCheckin: () -> Unit) {
+private fun CheckinCard(
+    state: CheckinState,
+    todayCheckedIn: Boolean,
+    streakDays: Long,
+    onCheckin: () -> Unit
+) {
+    val actionDone = todayCheckedIn || state is CheckinState.Done
     Card(
         modifier = Modifier.fillMaxWidth(),
         shape = RoundedCornerShape(20.dp),
@@ -1120,27 +1135,48 @@ private fun CheckinCard(state: CheckinState, onCheckin: () -> Unit) {
             Spacer(modifier = Modifier.height(12.dp))
             when (state) {
                 is CheckinState.Done -> Text(
-                    text = state.message,
+                    text = state.message.asString(),
                     style = MaterialTheme.typography.bodyMedium,
                     color = MaterialTheme.colorScheme.primary
                 )
                 is CheckinState.Error -> Text(
-                    text = state.message,
+                    text = state.message.asString(),
                     style = MaterialTheme.typography.bodySmall,
                     color = MaterialTheme.colorScheme.error
                 )
-                else -> Unit
+                // 提示态（设备级拦截等）：中性色，且不置灰按钮
+                is CheckinState.Notice -> Text(
+                    text = state.message.asString(),
+                    style = MaterialTheme.typography.bodySmall,
+                    color = inkMuted()
+                )
+                // 尚未点过按钮但预取到「今日已签」：给出连签提示
+                else -> if (todayCheckedIn) {
+                    Text(
+                        text = if (streakDays > 0) {
+                            stringResource(R.string.checkin_already_streak, streakDays)
+                        } else {
+                            stringResource(R.string.checkin_already)
+                        },
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.primary
+                    )
+                }
             }
             Spacer(modifier = Modifier.height(12.dp))
             Button(
                 onClick = onCheckin,
-                enabled = state !is CheckinState.Loading,
+                enabled = state !is CheckinState.Loading && !actionDone,
                 modifier = Modifier.fillMaxWidth().height(44.dp),
                 shape = RoundedCornerShape(12.dp)
             ) {
                 Text(
                     text = stringResource(
-                        if (state is CheckinState.Loading) R.string.checkin_loading else R.string.checkin_action
+                        when {
+                            state is CheckinState.Loading -> R.string.checkin_loading
+                            actionDone -> R.string.checkin_action_done
+                            else -> R.string.checkin_action
+                        }
                     )
                 )
             }
@@ -1148,6 +1184,31 @@ private fun CheckinCard(state: CheckinState, onCheckin: () -> Unit) {
     }
 }
 
+/** 未配置凭据时的签到占位卡：引导去配置，而不是直接暴露必然失败的签到按钮。 */
+@Composable
+private fun CheckinNeedCredentialCard() {
+    Card(
+        modifier = Modifier.fillMaxWidth(),
+        shape = RoundedCornerShape(20.dp),
+        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface),
+        elevation = CardDefaults.cardElevation(defaultElevation = 0.dp)
+    ) {
+        Column(modifier = Modifier.padding(20.dp)) {
+            Text(
+                text = stringResource(R.string.checkin_title),
+                style = MaterialTheme.typography.titleSmall,
+                fontWeight = FontWeight.SemiBold
+            )
+            Spacer(modifier = Modifier.height(6.dp))
+            Text(
+                text = stringResource(R.string.checkin_need_credential),
+                style = MaterialTheme.typography.bodySmall,
+                color = inkMuted()
+            )
+        }
+    }
+}
+
 /**
  * 通用明细卡：把 balance.extras 中的友好键逐行展示（Trae 权益包 / WorkBuddy 资源 /
  * Sub2API 账户等）。技术键（models / reset* / raw 等）一律过滤。

app/src/main/java/com/rainy/token/ui/servicedetail/ServiceDetailViewModel.kt

@@ -7,6 +7,8 @@ import com.rainy.token.data.cache.CachedBalance
 import com.rainy.token.data.debug.DebugLog
 import com.rainy.token.data.repository.CredentialRepository
 import com.rainy.token.data.repository.RepositoryError
+import com.rainy.token.data.repository.TraeRepository
+import com.rainy.token.data.repository.WorkBuddyRepository
 import com.rainy.token.data.repository.TriggerError
 import com.rainy.token.data.repository.TriggerErrorReason
 import com.rainy.token.domain.model.Credential
@@ -33,8 +35,6 @@ class ServiceDetailViewModel @Inject constructor(
     private val credentialRepository: CredentialRepository,
     private val balanceCache: BalanceCache,
     private val refreshBalanceUseCase: RefreshBalanceUseCase,
-    private val workBuddyRepository: com.rainy.token.data.repository.WorkBuddyRepository,
-    private val traeRepository: com.rainy.token.data.repository.TraeRepository,
     private val sub2ApiRepository: com.rainy.token.data.repository.Sub2ApiRepository
 ) : ViewModel() {
 
@@ -58,7 +58,33 @@ class ServiceDetailViewModel @Inject constructor(
     private val _checkinState = MutableStateFlow<CheckinState>(CheckinState.Idle)
     val checkinState: StateFlow<CheckinState> = _checkinState.asStateFlow()
 
-    /** 触发每日签到：仅 WORKBUDDY / TRAE 有效；结果消息来自官方响应语义。 */
+    /**
+     * 进入详情页时预取的「今日签到信息」（WorkBuddy）。
+     * null=未知/未加载；用于展示「今日已签到（连签 N 天）」并禁用按钮，避免重复点击。
+     */
+    private val _checkinInfo = MutableStateFlow<CheckinInfo?>(null)
+    val checkinInfo: StateFlow<CheckinInfo?> = _checkinInfo.asStateFlow()
+
+    /** 今日签到信息摘要（仅字段已确认的才填）。 */
+    data class CheckinInfo(val todayCheckedIn: Boolean, val streakDays: Long)
+
+    /** 进入详情页时预取签到状态：仅 WORKBUDDY 支持状态查询接口，TRAE 无该接口。 */
+    private fun preloadCheckinInfo(service: ServiceType) {
+        _checkinInfo.value = null
+        if (service != ServiceType.WORKBUDDY) return
+        val generation = serviceGeneration
+        viewModelScope.launch {
+            // 走 RefreshBalanceUseCase 会话：状态查询也会触发 OAuth 轮换，需按快照校验提交
+            val status = refreshBalanceUseCase.fetchCheckinStatus().getOrNull() ?: return@launch
+            if (generation != serviceGeneration || _serviceType.value != service) return@launch
+            _checkinInfo.value = CheckinInfo(
+                todayCheckedIn = status.todayCheckedIn,
+                streakDays = status.streakDays
+            )
+        }
+    }
+
+    /** 触发每日签到：仅 WORKBUDDY / TRAE 有效；结果按语义本地化（不直接显示 Repository 中文串）。 */
     fun checkin() {
         val service = _serviceType.value
         if (service != ServiceType.WORKBUDDY && service != ServiceType.TRAE) return
@@ -67,23 +93,75 @@ class ServiceDetailViewModel @Inject constructor(
         val generation = serviceGeneration
         viewModelScope.launch {
             val result = when (service) {
-                ServiceType.WORKBUDDY -> workBuddyRepository.checkIn().fold(
+                ServiceType.WORKBUDDY -> refreshBalanceUseCase.checkInWorkBuddy().fold(
                     onSuccess = { s ->
-                        CheckinState.Done(
+                        when (s.outcome) {
-                            s.message.ifBlank {
+                            WorkBuddyRepository.CheckinOutcome.ALREADY ->
-                                if (s.todayCheckedIn) "今日已签到（连签 " + s.streakDays + " 天）" else "签到成功"
+                                // 已签时带上连签天数（接口已回传，别浪费）
+                                CheckinState.Done(
+                                    if (s.streakDays > 0) {
+                                        UiText.Resource(R.string.checkin_already_streak, listOf(s.streakDays))
+                                    } else {
+                                        UiText.Resource(R.string.checkin_already)
+                                    }
+                                )
+                            WorkBuddyRepository.CheckinOutcome.SUCCESS -> {
+                                val credits = s.todayCredit.takeIf { it > 0 } ?: s.dailyCredit
+                                CheckinState.Done(
+                                    if (credits > 0) {
+                                        UiText.Resource(R.string.checkin_wb_success_credits, listOf(credits))
+                                    } else {
+                                        UiText.Resource(R.string.checkin_success)
+                                    }
+                                )
                             }
-                        )
+                            WorkBuddyRepository.CheckinOutcome.FAILED ->
+                                // 失败原因优先透传服务端原文（多为官方中文提示），缺省用通用失败文案
+                                CheckinState.Error(
+                                    if (s.message.isNotBlank()) UiText.Dynamic(s.message)
+                                    else UiText.Resource(R.string.checkin_failed)
+                                )
+                            // QUERY 不该出现在签到动作结果里，兜底为通用成功
+                            WorkBuddyRepository.CheckinOutcome.QUERY ->
+                                CheckinState.Done(UiText.Resource(R.string.checkin_success))
+                        }
                     },
-                    onFailure = { e -> CheckinState.Error(e.message ?: "签到失败，请检查凭据") }
+                    // RepositoryError.message 是硬编码中文，必须走 errorMessage() 本地化映射
+                    onFailure = { e -> CheckinState.Error(errorMessage(e)) }
                 )
-                ServiceType.TRAE -> traeRepository.checkIn().fold(
+                ServiceType.TRAE -> refreshBalanceUseCase.checkInTrae().fold(
-                    onSuccess = { r -> CheckinState.Done(r.message) },
+                    onSuccess = { r ->
-                    onFailure = { e -> CheckinState.Error(e.message ?: "签到失败，请检查凭据") }
+                        when (r.outcome) {
+                            TraeRepository.CheckinOutcome.SUCCESS ->
+                                CheckinState.Done(UiText.Resource(R.string.checkin_success))
+                            TraeRepository.CheckinOutcome.ALREADY ->
+                                CheckinState.Done(UiText.Resource(R.string.checkin_already))
+                            // 设备级拦截不是「账号已签」：用 Notice 展示，按钮保持可点（用户可换网/稍后重试）
+                            TraeRepository.CheckinOutcome.DEVICE_BLOCKED ->
+                                CheckinState.Notice(UiText.Resource(R.string.checkin_trae_device_blocked))
+                            TraeRepository.CheckinOutcome.INTL_UNSUPPORTED ->
+                                CheckinState.Error(UiText.Resource(R.string.checkin_trae_intl))
+                            TraeRepository.CheckinOutcome.FAILED -> CheckinState.Error(
+                                // 服务端原始原因优先；缺省用带 code 的失败文案
+                                if (r.message.isNotBlank()) {
+                                    UiText.Dynamic(r.message)
+                                } else if (r.code >= 0) {
+                                    UiText.Resource(R.string.checkin_trae_failed_code, listOf(r.code))
+                                } else {
+                                    UiText.Resource(R.string.checkin_failed)
+                                }
+                            )
+                        }
+                    },
+                    onFailure = { e -> CheckinState.Error(errorMessage(e)) }
                 )
-                else -> CheckinState.Error("该服务不支持签到")
+                else -> CheckinState.Error(UiText.Resource(R.string.checkin_unsupported))
+            }
+            if (generation == serviceGeneration) {
+                _checkinState.value = result
+                // 签到成功后刷新「今日已签到/连签」摘要，让按钮态即时更新
+                if (result is CheckinState.Done) preloadCheckinInfo(service)
             }
-            if (generation == serviceGeneration) _checkinState.value = result
         }
     }
 
@@ -294,11 +372,14 @@ class ServiceDetailViewModel @Inject constructor(
         _selectedModel.value = null
         _modelsLoading.value = false
         _triggerState.value = TriggerState.Idle
+        // 切换服务时重置签到状态，避免上一服务的 Done/Error 残留（按钮态/文案串台）
+        _checkinState.value = CheckinState.Idle
 
         if (service == ServiceType.CODEX || service == ServiceType.OPENCODE_GO || service == ServiceType.OLLAMA) {
             loadSelectedModel(service)?.let { _selectedModel.value = it }
             loadModelsCache(service).takeIf { it.isNotEmpty() }?.let { _models.value = it }
         }
+        preloadCheckinInfo(service)
         loadFromCache()
     }
 
@@ -796,11 +877,18 @@ class ServiceDetailViewModel @Inject constructor(
 }
 
 /** 每日签到 UI 状态。 */
+/** 每日签到 UI 状态。消息用 [UiText] 承载，由 UI 层按当前 Locale 解析（支持多语言）。 */
 sealed class CheckinState {
     data object Idle : CheckinState()
     data object Loading : CheckinState()
-    data class Done(val message: String) : CheckinState()
+    data class Done(val message: UiText) : CheckinState()
-    data class Error(val message: String) : CheckinState()
+    data class Error(val message: UiText) : CheckinState()
+
+    /**
+     * 提示态（非错误、也非完成）：例如 Trae 设备级拦截「该设备今日签到次数已达上限」。
+     * 与 [Done] 的区别是**不置灰按钮**——账号本身尚未签到，换网络/稍后可重试。
+     */
+    data class Notice(val message: UiText) : CheckinState()
 }
 
 /** Sub2API 面板 Key 列表状态。 */

app/src/main/res/values-b+zh+Hans/strings.xml

@@ -187,6 +187,17 @@
     <string name="checkin_subtitle">每天签到领积分，连签有奖励</string>
     <string name="checkin_action">签到</string>
     <string name="checkin_loading">签到中…</string>
+    <string name="checkin_success">签到成功</string>
+    <string name="checkin_already">今日已签到</string>
+    <string name="checkin_already_streak">今日已签到（连签 %1$d 天）</string>
+    <string name="checkin_failed">签到失败，请检查凭据</string>
+    <string name="checkin_unsupported">该服务不支持签到</string>
+    <string name="checkin_action_done">今日已签到</string>
+    <string name="checkin_need_credential">请先添加凭据后再签到。</string>
+    <string name="checkin_trae_intl">INTL 区签到接口暂未支持，请用 CN 区账号</string>
+    <string name="checkin_trae_device_blocked">该设备今日签到次数已达上限</string>
+    <string name="checkin_trae_failed_code">签到失败（code=%1$d）</string>
+    <string name="checkin_wb_success_credits">签到成功 +%1$d 积分</string>
 
     <!-- ══════════ Sub2API 面板 WebView 登录（全账号统计） ══════════ -->
     <string name="sub2_panel_login_hint">在打开的页面中正常登录，App 自动读取登录态；也可继续手动填 API Key</string>

app/src/main/res/values-b+zh+Hant/strings.xml

@@ -187,6 +187,17 @@
     <string name="checkin_subtitle">每天簽到領積分，連簽有獎勵</string>
     <string name="checkin_action">簽到</string>
     <string name="checkin_loading">簽到中…</string>
+    <string name="checkin_success">簽到成功</string>
+    <string name="checkin_already">今日已簽到</string>
+    <string name="checkin_already_streak">今日已簽到（連簽 %1$d 天）</string>
+    <string name="checkin_failed">簽到失敗，請檢查憑證</string>
+    <string name="checkin_unsupported">該服務不支援簽到</string>
+    <string name="checkin_action_done">今日已簽到</string>
+    <string name="checkin_need_credential">請先新增憑證後再簽到。</string>
+    <string name="checkin_trae_intl">INTL 區簽到介面暫未支援，請用 CN 區帳號</string>
+    <string name="checkin_trae_device_blocked">該裝置今日簽到次數已達上限</string>
+    <string name="checkin_trae_failed_code">簽到失敗（code=%1$d）</string>
+    <string name="checkin_wb_success_credits">簽到成功 +%1$d 積分</string>
 
     <!-- ══════════ Sub2API 面板 WebView 登入（全帳號統計） ══════════ -->
     <string name="sub2_panel_login_hint">在開啟的頁面中正常登入，App 自動讀取登入態；也可繼續手動填 API Key</string>

app/src/main/res/values/strings.xml

@@ -190,6 +190,17 @@
     <string name="checkin_subtitle">Check in every day for credits; streaks earn bonuses</string>
     <string name="checkin_action">Check in</string>
     <string name="checkin_loading">Checking…</string>
+    <string name="checkin_success">Check-in successful</string>
+    <string name="checkin_already">Already checked in today</string>
+    <string name="checkin_already_streak">Already checked in (streak %1$d days)</string>
+    <string name="checkin_failed">Check-in failed, please check credentials</string>
+    <string name="checkin_unsupported">This service does not support check-in</string>
+    <string name="checkin_action_done">Checked in today</string>
+    <string name="checkin_need_credential">Add your credentials first to check in.</string>
+    <string name="checkin_trae_intl">INTL check-in not yet supported, please use a CN account</string>
+    <string name="checkin_trae_device_blocked">Device check-in limit reached today</string>
+    <string name="checkin_trae_failed_code">Check-in failed (code=%1$d)</string>
+    <string name="checkin_wb_success_credits">Check-in successful +%1$d credits</string>
 
     <!-- ══════════ Sub2API 面板 WebView 登录（全账号统计） ══════════ -->
     <string name="sub2_panel_login_hint">Sign in normally on the opened page; the app reads the session automatically. Manual API Key still works.</string>

app/src/test/java/com/rainy/token/data/repository/TraeRepositoryTest.kt

@@ -0,0 +1,110 @@
+package com.rainy.token.data.repository
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+/**
+ * Unit tests for [TraeRepository.parseCheckin]（每日签到 claim 响应 → 语义结果）。
+ *
+ * 覆盖真实实测口径：code 0/200 成功、code 1001 已签、消息含「已签到」等账号级已签、
+ * 消息含「设备」为设备级拦截（提示而非报错）、其它 code 走 FAILED 且带回错误码。
+ * 全部纯 JVM、无网络（parseCheckin 位于 companion，静态调用，不构造 Repository）。
+ */
+class TraeRepositoryTest {
+
+    private fun parse(body: String) = TraeRepository.parseCheckin(body)
+
+    @Test
+    fun success_parsesPointsAndOutcome() {
+        val body = """{"code":0,"message":"签到成功","data":{"points":200}}"""
+        val r = parse(body).getOrThrow()
+
+        assertTrue(r.success)
+        assertFalse(r.alreadyChecked)
+        assertEquals(200L, r.points)
+        assertEquals(TraeRepository.CheckinOutcome.SUCCESS, r.outcome)
+    }
+
+    @Test
+    fun success_withoutPoints_fallsBackTo200() {
+        // 服务端未回 points 时按 200 兜底（实测默认奖励）
+        val r = parse("""{"code":200,"message":"ok"}""").getOrThrow()
+
+        assertTrue(r.success)
+        assertEquals(200L, r.points)
+        assertEquals(TraeRepository.CheckinOutcome.SUCCESS, r.outcome)
+    }
+
+    @Test
+    fun code1001_marksAlreadyChecked() {
+        val r = parse("""{"code":1001,"message":"今日已签到"}""").getOrThrow()
+
+        assertTrue(r.alreadyChecked)
+        assertEquals(TraeRepository.CheckinOutcome.ALREADY, r.outcome)
+        // 已签不应再报成功奖励
+        assertEquals(0L, r.points)
+    }
+
+    @Test
+    fun alreadyKeywordWithoutCode_marksAlreadyChecked() {
+        // 服务端换 code 但文案不变时仍识别为「账号级已签」
+        val r = parse("""{"code":5,"message":"您今天已经签到过了"}""").getOrThrow()
+
+        assertTrue(r.alreadyChecked)
+        assertEquals(TraeRepository.CheckinOutcome.ALREADY, r.outcome)
+    }
+
+    @Test
+    fun englishAlreadyKeyword_marksAlreadyChecked() {
+        val r = parse("""{"code":7,"message":"Already claimed today"}""").getOrThrow()
+
+        assertEquals(TraeRepository.CheckinOutcome.ALREADY, r.outcome)
+    }
+
+    @Test
+    fun deviceBlock_isNotSuccessAndNotAlready() {
+        // 设备级拦截：既不是成功，也不能误判成「账号已签」（否则用户以为签过了）
+        val body = """{"code":9074,"message":"该设备今日签到次数已达上限"}"""
+        val r = parse(body).getOrThrow()
+
+        assertFalse(r.success)
+        assertFalse(r.alreadyChecked)
+        assertEquals(TraeRepository.CheckinOutcome.DEVICE_BLOCKED, r.outcome)
+    }
+
+    @Test
+    fun deviceBlock_englishWording_alsoDetected() {
+        val r = parse("""{"code":9074,"message":"device limit reached"}""").getOrThrow()
+
+        assertEquals(TraeRepository.CheckinOutcome.DEVICE_BLOCKED, r.outcome)
+    }
+
+    @Test
+    fun unknownCode_isFailedAndKeepsCode() {
+        val r = parse("""{"code":500,"message":"服务异常"}""").getOrThrow()
+
+        assertFalse(r.success)
+        assertFalse(r.alreadyChecked)
+        assertEquals(TraeRepository.CheckinOutcome.FAILED, r.outcome)
+        assertEquals(500L, r.code)
+    }
+
+    @Test
+    fun dataWrappedResponse_isUnwrapped() {
+        // data 包裹结构（服务端两种布局都出现过）
+        val body = """{"data":{"code":0,"points":150},"trace":"x"}"""
+        val r = parse(body).getOrThrow()
+
+        assertTrue(r.success)
+        assertEquals(150L, r.points)
+    }
+
+    @Test
+    fun malformedJson_returnsFailureNotCrash() {
+        val result = parse("not-json")
+
+        assertTrue(result.isFailure)
+    }
+}

app/src/test/java/com/rainy/token/data/repository/WorkBuddyRepositoryTest.kt

@@ -0,0 +1,75 @@
+package com.rainy.token.data.repository
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+/**
+ * Unit tests for [WorkBuddyRepository.parseCheckin]（checkin-activity-status 响应 → 签到状态）。
+ *
+ * 覆盖实测字段口径：data 平铺 / {data:{...}} 包裹、snake_case 与 camelCase 双候选、
+ * 数值字段字符串化容错、字段缺失兜底。全部纯 JVM、无网络
+ * （parseCheckin 位于 companion，静态调用，不构造 Repository）。
+ */
+class WorkBuddyRepositoryTest {
+
+    private fun parse(body: String) = WorkBuddyRepository.parseCheckin(body)
+
+    @Test
+    fun flatResponse_parsesAllFields() {
+        val body = """
+            {"active":true,"today_checked_in":true,"streak_days":5,
+             "daily_credit":10,"today_credit":10,"activity_name":"Buddy 加油站"}
+        """.trimIndent()
+        val s = parse(body)
+
+        assertTrue(s.active)
+        assertTrue(s.todayCheckedIn)
+        assertEquals(5L, s.streakDays)
+        assertEquals(10L, s.dailyCredit)
+        assertEquals(10L, s.todayCredit)
+        assertEquals("Buddy 加油站", s.activityName)
+        // 查询模式不带动作语义
+        assertEquals(WorkBuddyRepository.CheckinOutcome.QUERY, s.outcome)
+    }
+
+    @Test
+    fun dataWrappedResponse_isUnwrapped() {
+        val body = """{"code":0,"data":{"active":true,"todayCheckedIn":true,"streakDays":"3"}}"""
+        val s = parse(body)
+
+        assertTrue(s.todayCheckedIn)
+        // camelCase + 字符串数字都要能解析
+        assertEquals(3L, s.streakDays)
+    }
+
+    @Test
+    fun notCheckedInToday_isFalse() {
+        val s = parse("""{"today_checked_in":false,"streak_days":0}""")
+
+        assertFalse(s.todayCheckedIn)
+        assertEquals(0L, s.streakDays)
+    }
+
+    @Test
+    fun missingFields_fallBackToDefaults() {
+        // 字段缺失时：active 默认 true（活动视为进行中）、签到相关默认 0/false
+        val s = parse("{}")
+
+        assertTrue(s.active)
+        assertFalse(s.todayCheckedIn)
+        assertEquals(0L, s.streakDays)
+        assertEquals(0L, s.dailyCredit)
+        assertEquals(0L, s.todayCredit)
+        assertEquals("", s.activityName)
+    }
+
+    @Test
+    fun themeName_isAcceptedAsActivityNameFallback() {
+        // 部分响应只有 theme_name
+        val s = parse("""{"theme_name":"每日签到"}""")
+
+        assertEquals("每日签到", s.activityName)
+    }
+}