fix(quota): declare monthlyTargetTime (undeclared since v0.4.2 refactor), ReferenceError when Command Code data absent; add undeclared-identifier scan to pagecheck (v0.4.5)

- Tab order: All | Command Code | OpenCode Go (All remains the default)
- Drop the global status badge in the header action row and its
  updateGlobalBadge aggregation; per-card chips and All-tab provider
  badges are unaffected

.gitignore

@@ -15,3 +15,11 @@ coverage.txt
 .idea/
 .vscode/
 *.swp
+
+# Release artifacts (attached to GitHub Releases, not tracked in git)
+*.zip
+checksums.txt
+dist/
+
+# Internal planning docs (not for public repo)
+docs/

Makefile

@@ -7,15 +7,22 @@ else
     TARGET := commandcode.so
 endif
 
-.PHONY: all build test clean lint
+.PHONY: all build test clean lint pagecheck
 
-all: build
+all: build pagecheck
 
 build:
 	CGO_ENABLED=1 go build -buildmode=c-shared -o $(TARGET) main.go
 
+# Extract embedded JS from quota_page.go and syntax-check it with node.
+# Guards against parse-time SyntaxErrors (e.g. duplicate const) that break
+# the whole resource page; Go substring tests cannot catch these.
+pagecheck:
+	@node scripts/pagecheck.js
+
 test:
 	go test -v -race ./...
+	$(MAKE) pagecheck
 
 clean:
 	rm -f commandcode.dylib commandcode.so commandcode.dll commandcode.h

README.md

@@ -4,7 +4,7 @@
 [![CLIProxyAPI Plugin ABI](https://img.shields.io/badge/C%20ABI-v1-emerald.svg)](https://help.router-for.me/plugin/development.html)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
 
-[CLIProxyAPI](https://github.com/router-for-me/CLIProxyAPI) 动态 C ABI 插件，用于提供 **Command Code** 上游配额与窗口限额查询、以及嵌入式配额监控仪表盘卡片（QuotaCard）。
+[CLIProxyAPI](https://github.com/router-for-me/CLIProxyAPI) 动态 C ABI 插件，用于提供 **Command Code** 与 **OpenCode Go** 两个上游的配额与窗口限额查询、以及嵌入式配额监控仪表盘卡片（QuotaCard，Tab: Command Code / OpenCode Go / All）。
 
 ---
 
@@ -20,6 +20,8 @@
   - [1. 浏览器资源页 (`QuotaCard`)](#1-浏览器资源页-quotacard)
   - [2. 管理 API: 查询用量 (`GET`)](#2-管理-api-查询用量-get)
   - [3. 管理 API: 测试用量 (`POST`)](#3-管理-api-测试用量-post)
+  - [4. 管理 API: OpenCode Go 用量 (`opencode/usage`)](#4-管理-api-opencode-go-用量-opencodeusage)
+  - [5. 管理 API: 聚合查询 (`all`)](#5-管理-api-聚合查询-all)
 - [用量数据结构说明](#用量数据结构说明)
 - [开发与测试](#开发与测试)
 - [许可证](#许可证)
@@ -45,6 +47,11 @@
    - 页面挂载于 `/v0/resource/plugins/commandcode/quota`。
    - 零外部 CDN 依赖，纯内置 HTML + CSS + JS，深色/浅色模式自适应。
    - 具有进度条颜色变化、5小时/周限额卡片、秒级动态重置倒计时、同源 `localStorage` 鉴权与一键刷新。
+   - Tab 切换：Command Code / OpenCode Go / All（`#opencode` / `#all` hash 记忆状态）。
+6. **OpenCode Go 用量查询 (v0.3.0+)**：
+   - 上游接口：`GET https://opencode.ai/zen/go/v1/usage`，`Authorization: Bearer` 认证（同样走 `host.http.do` 优先 + `net/http` 兜底）。
+   - 解析 rolling（5h）/ weekly / monthly 三个窗口的 `status`/`percent`/`resetsAt`，容忍未知 status 值。
+   - 聚合端点 `/plugins/commandcode/all` 一次返回两个 provider，部分失败不拖死另一 provider。
 
 ---
 
@@ -77,6 +84,7 @@
                                │ Upstream HTTPS
                                ▼
   https://api.commandcode.ai/internal/billing/credits
+  https://opencode.ai/zen/go/v1/usage        (v0.3.0+)
 ```
 
 ---
@@ -126,6 +134,11 @@ plugins:
       priority: 1
       session_token: "YOUR_COMMANDCODE_SESSION_TOKEN" # 支持纯 token 或完整 Cookie 字符串
       api_base: "https://api.commandcode.ai" # 可选，默认为官方接口
+      opencode_api_key: "sk-YOUR_OPENCODE_GO_API_KEY" # 可选（单 key 兑底，v0.3.0+）
+      # v0.4.0+ 多 key：list 优先于单 key 字段，每 key 独立账号独立配额窗口
+      opencode_api_keys:
+        - "sk-KEY1..."
+        - "sk-KEY2..."
 ```
 
 ---
@@ -135,11 +148,11 @@ plugins:
 ### 1. 浏览器资源页 (`QuotaCard`)
 
 - **访问路径**：`GET http://<cpa-host>:8317/v0/resource/plugins/commandcode/quota`
-- **菜单名**：`Command Code 配额`
+- **菜单名**：`用量配额`
 - **说明**：
   - 资源请求本身无需经过管理认证，可在浏览器中直接打开或嵌入仪表盘。
-  - 在同源模式下，页面 JavaScript 会自动读取 `localStorage` 中的管理密钥向 `/v0/management/plugins/commandcode/usage` 请求数据。
-  - 若在独立或跨域测试环境下打开，页面提供内置的诊断面板，可手动输入 Management Key 或测试 Session Token。
+  - 在同源模式下，页面 JavaScript 会自动读取 `localStorage` 中的管理密钥向 `/v0/management/plugins/commandcode/all` 请求数据（一次获取 Command Code + OpenCode Go）。
+  - 若在独立或跨域测试环境下打开，页面提供内置的诊断面板，可手动输入 Management Key、测试 Session Token 或 OpenCode API Key（仅当次请求生效，不持久化）。
 
 ### 2. 管理 API: 查询用量 (`GET`)
 
@@ -198,6 +211,75 @@ plugins:
 }
 ```
 
+### 4. 管理 API: OpenCode Go 用量 (`opencode/usage`)
+
+- **端点**：`GET /v0/management/plugins/commandcode/opencode/usage`（认证同上，仅读插件配置；凭据覆盖走 POST）
+- **端点**：`POST /v0/management/plugins/commandcode/opencode/usage`
+- **POST 请求体**（多 key 数组优先；scalar 为 v0.3.0 兼容）：
+
+```json
+{ "opencode_api_keys": ["sk-KEY1", "sk-KEY2"] }
+```
+
+- **响应（v0.4.0+，逐 key 结果数组）**：
+
+```json
+{
+  "ok": true,
+  "provider": "opencode_go",
+  "keys": [
+    {
+      "key_id": "sk-L…KqYB",
+      "ok": true,
+      "windows": {
+        "rolling": { "status": "ok", "percent": 4, "exceeded": false,
+                     "reset_at": "2026-09-17T06:58:53Z", "reset_in_seconds": 2520 },
+        "weekly":  { "status": "ok", "percent": 46, "exceeded": false,
+                     "reset_at": "2026-09-21T00:00:00Z", "reset_in_seconds": 259200 },
+        "monthly": { "status": "ok", "percent": 23, "exceeded": false,
+                     "reset_at": "2026-10-14T09:13:49Z", "reset_in_seconds": 1728000 }
+      },
+      "updated_at": "2026-09-16T12:00:00Z",
+      "status_code": 200
+    },
+    {
+      "key_id": "sk-U…PNHn",
+      "ok": false,
+      "updated_at": "2026-09-16T12:00:01Z",
+      "status_code": 401,
+      "error": "opencode upstream returned 401: check opencode_api_key"
+    }
+  ],
+  "updated_at": "2026-09-16T12:00:01Z"
+}
+```
+
+- `key_id` 为服务端脱敏标识（前4+…+后4），原始 key 永不出现在响应中；失败 key 无 `windows` 字段，单 key 失败不影响其他 key。
+- **HTTP 状态**：≥1 key 成功 → 200；key 全配但全失败 → 502；未配置任何 key → 400。
+
+### 5. 管理 API: 聚合查询 (`all`)
+
+- **端点**：`GET /v0/management/plugins/commandcode/all`（仅读插件配置）
+- **端点**：`POST /v0/management/plugins/commandcode/all`
+- **POST 请求体**（可只带其一；多 key 覆盖为数组）：
+
+```json
+{ "session_token": "...", "opencode_api_keys": ["sk-KEY1", "sk-KEY2"] }
+```
+
+- **部分失败语义**：HTTP 200 表示至少一个 provider（Command Code 或 ≥1 个 OpenCode key）成功；失败 provider 记入 `errors`，其响应字段整个省略；全失败且为本地凭据缺失 → 400，全失败且为上游错误 → 502。
+
+```json
+{
+  "ok": true,
+  "commandcode": { "ok": true, "plan": {...}, "credits": {...}, "window_limits": {...}, "updated_at": "..." },
+  "opencode": { "ok": true, "provider": "opencode_go", "keys": [ ...同上... ], "updated_at": "..." },
+  "updated_at": "2026-09-16T12:00:00Z"
+}
+```
+
+> **v0.4.0 breaking note**：`opencode` 字段从单 key 对象变为 `{ok, provider, keys[], updated_at}` 多 key 结构（keys[].windows 为 v0.3.0 原窗口结构）。唯一消费方是同仓 QuotaCard 资源页，已同版本同步更新。
+
 ---
 
 ## 用量数据结构说明
@@ -215,6 +297,11 @@ plugins:
 | `window_limits.five_hour.reset_at` | `string` | 5小时窗口重置时间的 RFC3339 字符串 |
 | `window_limits.five_hour.reset_in_seconds`| `int64` | 距离 5 小时窗口重置的剩余秒数 |
 | `window_limits.weekly.*` | - | 每周限额对应指标（结构同 5 小时窗口） |
+| `windows.<rolling\|weekly\|monthly>.status` | `string` | OpenCode Go 窗口状态（`"ok"`/上游其他值，未知值不报错） |
+| `keys[].key_id` | `string` | 服务端脱敏 key 标识（前4+…+后4），原始 key 不出响应 |
+| `keys[].ok` | `bool` | 该 key 查询是否成功（单 key 401 隔离） |
+| `keys[].windows.<...>` | `object` | 成功 key 的三窗口指标（结构同上；失败 key 无此字段） |
+| `keys[].status_code` / `error` | `int` / `string` | 该 key 上游 HTTP 状态与失败原因 |
 
 ---
 

checksums.txt

@@ -1 +0,0 @@
-7830fab0eb763247602fd4815549a13eeb25841afbe2d3a047d25b9f4b9cf86d  commandcode_0.2.2_linux_amd64.zip

plugin/management.go

@@ -3,6 +3,7 @@ package plugin
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"strings"
 	"time"
@@ -22,12 +23,32 @@ func RegisterManagement() (ManagementRegistrationResponse, error) {
 				Path:        "/plugins/commandcode/usage",
 				Description: "Query Command Code credits and window limits usage with custom session_token",
 			},
+			{
+				Method:      http.MethodGet,
+				Path:        "/plugins/commandcode/opencode/usage",
+				Description: "Query OpenCode Go usage windows (rolling/weekly/monthly)",
+			},
+			{
+				Method:      http.MethodPost,
+				Path:        "/plugins/commandcode/opencode/usage",
+				Description: "Query OpenCode Go usage windows with custom opencode_api_key",
+			},
+			{
+				Method:      http.MethodGet,
+				Path:        "/plugins/commandcode/all",
+				Description: "Query both Command Code and OpenCode Go usage (aggregated, partial failures reported in errors map)",
+			},
+			{
+				Method:      http.MethodPost,
+				Path:        "/plugins/commandcode/all",
+				Description: "Query both providers with custom credentials in request body",
+			},
 		},
 		Resources: []ResourceRoute{
 			{
 				Path:        "/quota",
-				Menu:        "Command Code 配额",
-				Description: "Command Code 用量与限额卡片",
+				Menu:        "用量配额",
+				Description: "Command Code + OpenCode Go 用量与限额卡片",
 			},
 		},
 	}, nil
@@ -49,7 +70,42 @@ func HandleManagement(ctx context.Context, req ManagementRequest, cfg *PluginCon
 		}, nil
 	}
 
-	// 2. Serve Usage API (GET / POST)
+	// 2. OpenCode Go usage API — MUST be matched before the generic /usage
+	// suffix match below, otherwise "/plugins/commandcode/opencode/usage"
+	// would be swallowed by the Command Code handler.
+	if strings.HasSuffix(path, "/plugins/commandcode/opencode/usage") {
+		switch method {
+		case http.MethodGet, http.MethodPost:
+			return handleOpenCodeUsage(ctx, req, cfg)
+		default:
+			return ManagementResponse{
+				StatusCode: http.StatusMethodNotAllowed,
+				Headers: map[string][]string{
+					"Content-Type": {"application/json"},
+				},
+				Body: []byte(`{"ok":false,"error":"method not allowed"}`),
+			}, nil
+		}
+	}
+
+	// 3. Aggregated usage API (both providers) — does not end with "/usage",
+	// but registered before the generic match for clarity and future safety.
+	if strings.HasSuffix(path, "/plugins/commandcode/all") {
+		switch method {
+		case http.MethodGet, http.MethodPost:
+			return handleAllUsage(ctx, req, cfg)
+		default:
+			return ManagementResponse{
+				StatusCode: http.StatusMethodNotAllowed,
+				Headers: map[string][]string{
+					"Content-Type": {"application/json"},
+				},
+				Body: []byte(`{"ok":false,"error":"method not allowed"}`),
+			}, nil
+		}
+	}
+
+	// 4. Command Code usage API (GET / POST) — generic suffix match kept as-is.
 	if strings.HasSuffix(path, "/plugins/commandcode/usage") || strings.HasSuffix(path, "/usage") {
 		switch method {
 		case http.MethodGet:
@@ -215,3 +271,287 @@ func executeUsageQuery(ctx context.Context, apiBase, sessionToken, hostCallbackI
 		Body: resBytes,
 	}, nil
 }
+
+// handleOpenCodeUsage serves GET/POST /plugins/commandcode/opencode/usage.
+// Credentials can be overridden via POST body only (opencode_api_keys list /
+// opencode_api_key scalar); GET queries are read-only against the plugin
+// config — query parameter overrides are intentionally not supported to keep
+// secrets out of URLs.
+//
+// The response is the multi-key OpenCodeMultiKeyResponse envelope (v0.4.0):
+// >=1 key succeeded → 200; keys configured but all upstream-failed → 502; no
+// keys configured at all → 400 with a top-level "no opencode api keys
+// configured ..." error.
+func handleOpenCodeUsage(ctx context.Context, req ManagementRequest, cfg *PluginConfig) (ManagementResponse, error) {
+	apiBase := ""
+	var keys []string
+
+	if req.Method == http.MethodPost && len(req.Body) > 0 {
+		var body struct {
+			OpenCodeAPIKeys []string `json:"opencode_api_keys"`
+			OpenCodeAPIKey  string   `json:"opencode_api_key"`
+			APIKey          string   `json:"api_key"`
+			OpenCodeAPIBase string   `json:"opencode_api_base"`
+		}
+		_ = json.Unmarshal(req.Body, &body)
+		keys = normalizeOpenCodeKeys(body.OpenCodeAPIKeys)
+		if len(keys) == 0 {
+			single := strings.TrimSpace(body.OpenCodeAPIKey)
+			if single == "" {
+				single = strings.TrimSpace(body.APIKey)
+			}
+			if single != "" {
+				keys = []string{single}
+			}
+		}
+		apiBase = body.OpenCodeAPIBase
+	}
+
+	// Fallback to plugin config
+	if len(keys) == 0 && cfg != nil {
+		keys = cfg.GetOpenCodeAPIKeys()
+	}
+	if apiBase == "" && cfg != nil {
+		apiBase = cfg.GetOpenCodeAPIBase()
+	}
+
+	now := time.Now().UTC()
+	if len(keys) == 0 {
+		resBytes, _ := json.Marshal(OpenCodeMultiKeyResponse{
+			OK:        false,
+			Provider:  "opencode_go",
+			Keys:      []OpenCodeKeyResult{},
+			UpdatedAt: now.Format(time.RFC3339),
+			Error:     "no opencode api keys configured. Configure opencode_api_keys (YAML list) or opencode_api_key in the plugin config, or pass opencode_api_keys in the POST body",
+		})
+		return ManagementResponse{
+			StatusCode: http.StatusBadRequest,
+			Headers: map[string][]string{
+				"Content-Type": {"application/json"},
+			},
+			Body: resBytes,
+		}, nil
+	}
+
+	results := QueryOpenCodeKeys(ctx, apiBase, keys, req.HostCallbackID)
+	succeeded := 0
+	for _, r := range results {
+		if r.OK {
+			succeeded++
+		}
+	}
+
+	statusCode := http.StatusOK
+	if succeeded == 0 {
+		statusCode = http.StatusBadGateway
+	}
+	resBytes, _ := json.Marshal(OpenCodeMultiKeyResponse{
+		OK:        succeeded > 0,
+		Provider:  "opencode_go",
+		Keys:      results,
+		UpdatedAt: now.Format(time.RFC3339),
+	})
+	return ManagementResponse{
+		StatusCode: statusCode,
+		Headers: map[string][]string{
+			"Content-Type": {"application/json"},
+		},
+		Body: resBytes,
+	}, nil
+}
+
+// handleAllUsage serves GET/POST /plugins/commandcode/all: it queries both
+// providers sequentially (no goroutines — the host.http.do bridge's host-side
+// concurrency safety cannot be verified and shared maps would race under -race).
+// Partial failure: OK=true as long as at least one provider succeeds; failures
+// land in the Errors map and successful fields are omitted when absent.
+// HTTP status: any success → 200; all failed due to missing local credentials → 400;
+// all failed due to upstream errors → 502.
+func handleAllUsage(ctx context.Context, req ManagementRequest, cfg *PluginConfig) (ManagementResponse, error) {
+	sessionToken := ""
+	opencodeKeys := []string{}
+
+	if req.Method == http.MethodPost && len(req.Body) > 0 {
+		var body struct {
+			SessionToken    string   `json:"session_token"`
+			OpencodeAPIKeys []string `json:"opencode_api_keys"`
+			OpencodeAPIKey  string   `json:"opencode_api_key"`
+		}
+		_ = json.Unmarshal(req.Body, &body)
+		sessionToken = body.SessionToken
+		opencodeKeys = normalizeOpenCodeKeys(body.OpencodeAPIKeys)
+		if len(opencodeKeys) == 0 {
+			if single := strings.TrimSpace(body.OpencodeAPIKey); single != "" {
+				opencodeKeys = []string{single}
+			}
+		}
+	}
+
+	// Fallback to plugin config
+	if sessionToken == "" && cfg != nil {
+		sessionToken = cfg.GetSessionToken()
+	}
+	if len(opencodeKeys) == 0 && cfg != nil {
+		opencodeKeys = cfg.GetOpenCodeAPIKeys()
+	}
+	apiBase := ""
+	if cfg != nil {
+		apiBase = cfg.GetAPIBase()
+	}
+	ocAPIBase := ""
+	if cfg != nil {
+		ocAPIBase = cfg.GetOpenCodeAPIBase()
+	}
+
+	now := time.Now().UTC()
+	resp := AllUsageResponse{OK: false, UpdatedAt: now.Format(time.RFC3339)}
+	errs := make(map[string]string)
+	localMissing := 0
+	upstreamFailed := 0
+	succeeded := 0
+
+	// Provider 1: Command Code (reuses executeUsageQuery).
+	ccResp, _ := executeUsageQuery(ctx, apiBase, sessionToken, req.HostCallbackID)
+	if ccResp.StatusCode == http.StatusOK {
+		resp.CommandCode = ccResp.Body
+		succeeded++
+	} else {
+		ccErr := extractErrorResponseMessage(ccResp.Body)
+		errs["commandcode"] = ccErr
+		if isLocalCredentialError(ccErr) {
+			localMissing++
+		} else {
+			upstreamFailed++
+		}
+	}
+
+	// Provider 2: OpenCode Go, one sequential query per configured key
+	// (v0.4.0). >=1 key success counts the provider as successful and the
+	// multi-key payload is inlined; keys configured but all failed is an
+	// upstream failure (a configured-but-invalid key is NOT a local config
+	// problem); zero keys configured is a local missing-credential error.
+	if len(opencodeKeys) > 0 {
+		results := QueryOpenCodeKeys(ctx, ocAPIBase, opencodeKeys, req.HostCallbackID)
+		succeededKeys := 0
+		for _, r := range results {
+			if r.OK {
+				succeededKeys++
+			}
+		}
+		if succeededKeys > 0 {
+			ocBytes, _ := json.Marshal(OpenCodeMultiKeyResponse{
+				OK:        true,
+				Provider:  "opencode_go",
+				Keys:      results,
+				UpdatedAt: now.Format(time.RFC3339),
+			})
+			resp.OpenCode = ocBytes
+			succeeded++
+		} else {
+			errs["opencode"] = fmt.Sprintf("all %d opencode keys failed", len(opencodeKeys))
+			upstreamFailed++
+		}
+	} else {
+		errs["opencode"] = "no opencode api keys configured. Configure opencode_api_keys (YAML list) or opencode_api_key in the plugin config, or pass opencode_api_keys in the POST body"
+		localMissing++
+	}
+
+	if len(errs) > 0 {
+		resp.Errors = errs
+	}
+	resp.OK = succeeded > 0
+
+	statusCode := http.StatusOK
+	if !resp.OK {
+		if upstreamFailed == 0 && localMissing == len(errs) {
+			statusCode = http.StatusBadRequest
+		} else {
+			statusCode = http.StatusBadGateway
+		}
+	}
+
+	resBytes, _ := json.Marshal(resp)
+	return ManagementResponse{
+		StatusCode: statusCode,
+		Headers: map[string][]string{
+			"Content-Type": {"application/json"},
+		},
+		Body: resBytes,
+	}, nil
+}
+
+// isLocalCredentialError reports whether an /all provider error is a local
+// configuration problem (missing credential in plugin config), as opposed to
+// an upstream failure. Local-credential errors carry fixed message prefixes;
+// upstream 4xx/5xx never match them, so the /all 400-vs-502 classification
+// does not rely on the HTTP status alone.
+func isLocalCredentialError(msg string) bool {
+	for _, prefix := range []string{
+		"session_token is required",
+		"opencode_api_key is required",
+		"no opencode api keys configured",
+	} {
+		if strings.HasPrefix(msg, prefix) {
+			return true
+		}
+	}
+	return false
+}
+
+// queryOpenCodeKey runs the OpenCode Go usage query for a single API key and
+// returns a typed per-key result, shared by handleOpenCodeUsage and
+// handleAllUsage (via QueryOpenCodeKeys). The handler layer is responsible
+// for marshaling the aggregate response and picking the HTTP status code.
+func queryOpenCodeKey(ctx context.Context, apiBase, key, hostCallbackID string) (OpenCodeKeyResult, error) {
+	now := time.Now().UTC()
+	res := OpenCodeKeyResult{
+		KeyID:     MaskAPIKey(key),
+		UpdatedAt: now.Format(time.RFC3339),
+	}
+
+	if strings.TrimSpace(key) == "" {
+		res.StatusCode = http.StatusBadRequest
+		res.Error = "opencode_api_key is required. Configure opencode_api_keys in plugin config or pass it in the request"
+		return res, nil
+	}
+
+	raw, statusCode, errFetch := FetchOpenCodeUsageRaw(ctx, apiBase, key, hostCallbackID)
+	if errFetch != nil {
+		if statusCode == 0 || statusCode == http.StatusOK {
+			statusCode = http.StatusBadGateway
+		}
+		res.StatusCode = statusCode
+		res.Error = fmt.Sprintf("opencode upstream request failed: %s", errFetch.Error())
+		return res, nil
+	}
+
+	if statusCode != http.StatusOK {
+		res.StatusCode = statusCode
+		res.Error = fmt.Sprintf("opencode upstream returned %d: check opencode_api_key", statusCode)
+		return res, nil
+	}
+
+	usage, errParse := ParseOpenCodeUsage(raw, now)
+	if errParse != nil {
+		res.StatusCode = http.StatusBadGateway
+		res.Error = "failed to parse opencode upstream usage: " + errParse.Error()
+		return res, nil
+	}
+
+	res.OK = true
+	res.StatusCode = http.StatusOK
+	res.Windows = &usage.Windows
+	res.UpdatedAt = usage.UpdatedAt
+	return res, nil
+}
+
+// extractErrorResponseMessage pulls the "error" field out of a JSON error body.
+func extractErrorResponseMessage(body []byte) string {
+	var parsed struct {
+		Error string `json:"error"`
+	}
+	if err := json.Unmarshal(body, &parsed); err == nil && parsed.Error != "" {
+		return parsed.Error
+	}
+	return "unknown error"
+}

plugin/management_test.go

@@ -3,10 +3,12 @@ package plugin
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
+	"time"
 )
 
 func TestRegisterManagement(t *testing.T) {
@@ -15,8 +17,8 @@ func TestRegisterManagement(t *testing.T) {
 		t.Fatalf("RegisterManagement error: %v", err)
 	}
 
-	if len(resp.Routes) != 2 {
-		t.Fatalf("len(Routes) = %d, want 2", len(resp.Routes))
+	if len(resp.Routes) != 6 {
+		t.Fatalf("len(Routes) = %d, want 6", len(resp.Routes))
 	}
 	if resp.Routes[0].Method != http.MethodGet || resp.Routes[0].Path != "/plugins/commandcode/usage" {
 		t.Errorf("Route 0 mismatch: %+v", resp.Routes[0])
@@ -24,13 +26,27 @@ func TestRegisterManagement(t *testing.T) {
 	if resp.Routes[1].Method != http.MethodPost || resp.Routes[1].Path != "/plugins/commandcode/usage" {
 		t.Errorf("Route 1 mismatch: %+v", resp.Routes[1])
 	}
+	wantOpencode := []struct{ method, path string }{
+		{http.MethodGet, "/plugins/commandcode/opencode/usage"},
+		{http.MethodPost, "/plugins/commandcode/opencode/usage"},
+		{http.MethodGet, "/plugins/commandcode/all"},
+		{http.MethodPost, "/plugins/commandcode/all"},
+	}
+	for i, w := range wantOpencode {
+		if resp.Routes[2+i].Method != w.method || resp.Routes[2+i].Path != w.path {
+			t.Errorf("Route %d mismatch: got %+v, want %s %s", 2+i, resp.Routes[2+i], w.method, w.path)
+		}
+	}
 
 	if len(resp.Resources) != 1 {
 		t.Fatalf("len(Resources) = %d, want 1", len(resp.Resources))
 	}
-	if resp.Resources[0].Path != "/quota" || resp.Resources[0].Menu != "Command Code 配额" {
+	if resp.Resources[0].Path != "/quota" || resp.Resources[0].Menu != "用量配额" {
 		t.Errorf("Resource 0 mismatch: %+v", resp.Resources[0])
 	}
+	if resp.Resources[0].Description != "Command Code + OpenCode Go 用量与限额卡片" {
+		t.Errorf("Resource Description mismatch: %+v", resp.Resources[0])
+	}
 }
 
 func TestHandleManagement_QuotaResource(t *testing.T) {
@@ -56,8 +72,11 @@ func TestHandleManagement_QuotaResource(t *testing.T) {
 			t.Errorf("Content-Type = %v, want text/html", ct)
 		}
 		bodyStr := string(resp.Body)
-		if !strings.Contains(bodyStr, "Command Code 配额") {
-			t.Errorf("Body does not contain expected title")
+		if !strings.Contains(bodyStr, "用量配额") {
+			t.Errorf("Body does not contain expected menu text 用量配额")
+		}
+		if !strings.Contains(bodyStr, "v0.4.5") {
+			t.Errorf("Body does not contain version badge v0.4.5")
 		}
 	}
 }
@@ -150,3 +169,654 @@ func TestHandleManagement_PostUsage(t *testing.T) {
 		t.Errorf("MonthlyCredits = %v, want 666", usage.Credits.MonthlyCredits)
 	}
 }
+
+const mockOpencodeUsageJSON = `{"usage":{
+	"rolling": {"status":"ok","percent":4, "resetsAt":"2026-09-17T06:58:53.171Z"},
+	"weekly":  {"status":"ok","percent":46,"resetsAt":"2026-09-21T00:00:00.000Z"},
+	"monthly": {"status":"ok","percent":23,"resetsAt":"2026-10-14T09:13:49.000Z"}
+}}`
+
+// mockOpencodeUsageJSONFuture returns the same usage envelope but with reset
+// timestamps relative to now. The hardcoded dates in mockOpencodeUsageJSON
+// eventually fall into the past (weekly 2026-09-21 did), which makes
+// weekly.ResetInSeconds = 0 and breaks the `want > 0` assertion in
+// TestHandleManagement_OpencodeUsageRoute. Use this fixture for tests that
+// assert positive reset_in_seconds.
+func mockOpencodeUsageJSONFuture() string {
+	now := time.Now().UTC()
+	ts := func(d time.Duration) string {
+		return now.Add(d).Format("2006-01-02T15:04:05.000Z")
+	}
+	return fmt.Sprintf(`{"usage":{
+	"rolling": {"status":"ok","percent":4, "resetsAt":"%s"},
+	"weekly":  {"status":"ok","percent":46,"resetsAt":"%s"},
+	"monthly": {"status":"ok","percent":23,"resetsAt":"%s"}
+}}`, ts(2*time.Hour), ts(72*time.Hour), ts(30*24*time.Hour))
+}
+
+// Verifies that /plugins/commandcode/opencode/usage is matched by the dedicated
+// OpenCode handler and NOT swallowed by the generic "/usage" suffix match
+// (which would route it to the Command Code handler).
+func TestHandleManagement_OpencodeUsageRoute(t *testing.T) {
+	var sawAuthHeader bool
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/usage" {
+			t.Errorf("unexpected path %s, want /usage (Command Code handler must not be hit)", r.URL.Path)
+			http.NotFound(w, r)
+			return
+		}
+		if got := r.Header.Get("Authorization"); got != "Bearer sk-opencode-override" {
+			t.Errorf("Authorization = %q, want Bearer sk-opencode-override", got)
+		}
+		if r.Header.Get("Cookie") != "" {
+			t.Errorf("unexpected Cookie header on opencode request: %q", r.Header.Get("Cookie"))
+		}
+		sawAuthHeader = true
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(mockOpencodeUsageJSONFuture()))
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	reqBody, _ := json.Marshal(map[string]string{
+		"opencode_api_key":  "sk-opencode-override",
+		"opencode_api_base": ts.URL,
+	})
+
+	for _, tc := range []struct {
+		method string
+		body   []byte
+	}{
+		{http.MethodPost, reqBody},
+		// GET with configured plugin config (no query override by design).
+	} {
+		t.Run(tc.method, func(t *testing.T) {
+			cfg := &PluginConfig{
+				OpenCodeAPIKey:  "sk-configured",
+				OpenCodeAPIBase: ts.URL,
+			}
+			req := ManagementRequest{
+				Method: tc.method,
+				Path:   "/v0/management/plugins/commandcode/opencode/usage",
+				Body:   tc.body,
+			}
+			resp, err := HandleManagement(context.Background(), req, cfg)
+			if err != nil {
+				t.Fatalf("HandleManagement error: %v", err)
+			}
+			if resp.StatusCode != http.StatusOK {
+				t.Fatalf("StatusCode = %d, want 200, body=%s", resp.StatusCode, string(resp.Body))
+			}
+			// v0.4.0: the response is the multi-key envelope even for a single key.
+			var usage OpenCodeMultiKeyResponse
+			if err := json.Unmarshal(resp.Body, &usage); err != nil {
+				t.Fatalf("unmarshal body error: %v", err)
+			}
+			if !usage.OK || usage.Provider != "opencode_go" {
+				t.Fatalf("unexpected response: ok=%v provider=%q", usage.OK, usage.Provider)
+			}
+			if len(usage.Keys) != 1 || !usage.Keys[0].OK {
+				t.Fatalf("expected exactly one successful key, got %+v", usage.Keys)
+			}
+			if usage.Keys[0].Windows == nil {
+				t.Fatal("keys[0].windows = nil, want non-nil on success")
+			}
+			if usage.Keys[0].Windows.Rolling.Percent != 4 || usage.Keys[0].Windows.Weekly.Percent != 46 || usage.Keys[0].Windows.Monthly.Percent != 23 {
+				t.Errorf("windows percents = %v/%v/%v, want 4/46/23",
+					usage.Keys[0].Windows.Rolling.Percent, usage.Keys[0].Windows.Weekly.Percent, usage.Keys[0].Windows.Monthly.Percent)
+			}
+			if usage.Keys[0].Windows.Weekly.ResetInSeconds <= 0 {
+				t.Errorf("weekly reset_in_seconds = %d, want > 0", usage.Keys[0].Windows.Weekly.ResetInSeconds)
+			}
+			// The raw key from the POST body must never appear in the response.
+			if strings.Contains(string(resp.Body), "sk-opencode-override") && tc.method == http.MethodPost {
+				t.Errorf("response leaks the raw override key: %s", string(resp.Body))
+			}
+		})
+	}
+
+	if !sawAuthHeader {
+		t.Fatal("upstream never received Authorization header")
+	}
+}
+
+// /opencode/usage status matrix (v0.4.0): >=1 key success → 200; one success
+// + one 401 → 200 with keys[1].ok=false and no windows; all 401 → 502; no
+// keys configured → 400 with the "no opencode api keys configured" prefix.
+func TestHandleManagement_OpencodeUsage_MultiKeyMatrix(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.Header.Get("Authorization") {
+		case "Bearer sk-good-AAAA", "Bearer sk-good-ZZZZ":
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(mockOpencodeUsageJSON))
+		default:
+			w.WriteHeader(http.StatusUnauthorized)
+			_, _ = w.Write([]byte(`{"error":"invalid api key"}`))
+		}
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	postKeys := func(keys ...string) ManagementRequest {
+		body, _ := json.Marshal(map[string]any{
+			"opencode_api_keys": keys,
+			"opencode_api_base": ts.URL,
+		})
+		return ManagementRequest{
+			Method: http.MethodPost,
+			Path:   "/plugins/commandcode/opencode/usage",
+			Body:   body,
+		}
+	}
+
+	t.Run("both keys succeed → 200", func(t *testing.T) {
+		resp, err := HandleManagement(context.Background(), postKeys("sk-good-AAAA", "sk-good-ZZZZ"), nil)
+		if err != nil {
+			t.Fatalf("HandleManagement error: %v", err)
+		}
+		if resp.StatusCode != http.StatusOK {
+			t.Fatalf("StatusCode = %d, want 200, body=%s", resp.StatusCode, string(resp.Body))
+		}
+		var usage OpenCodeMultiKeyResponse
+		if err := json.Unmarshal(resp.Body, &usage); err != nil {
+			t.Fatalf("unmarshal error: %v", err)
+		}
+		if !usage.OK || len(usage.Keys) != 2 || !usage.Keys[0].OK || !usage.Keys[1].OK {
+			t.Errorf("unexpected response: %+v", usage)
+		}
+		if usage.Error != "" {
+			t.Errorf("top-level error = %q, want empty when keys are configured", usage.Error)
+		}
+	})
+
+	t.Run("one success one 401 → 200 with failed key isolated", func(t *testing.T) {
+		resp, err := HandleManagement(context.Background(), postKeys("sk-good-AAAA", "sk-bad-BBBB"), nil)
+		if err != nil {
+			t.Fatalf("HandleManagement error: %v", err)
+		}
+		if resp.StatusCode != http.StatusOK {
+			t.Fatalf("StatusCode = %d, want 200 (>=1 key succeeded), body=%s", resp.StatusCode, string(resp.Body))
+		}
+		var usage OpenCodeMultiKeyResponse
+		if err := json.Unmarshal(resp.Body, &usage); err != nil {
+			t.Fatalf("unmarshal error: %v", err)
+		}
+		if !usage.OK || len(usage.Keys) != 2 {
+			t.Fatalf("unexpected response: %+v", usage)
+		}
+		if !usage.Keys[0].OK || usage.Keys[0].Windows == nil {
+			t.Errorf("keys[0] = %+v, want ok with windows", usage.Keys[0])
+		}
+		if usage.Keys[1].OK || usage.Keys[1].Windows != nil {
+			t.Errorf("keys[1] = %+v, want not-ok with nil windows", usage.Keys[1])
+		}
+		if usage.Keys[1].StatusCode != http.StatusUnauthorized {
+			t.Errorf("keys[1].status_code = %d, want 401", usage.Keys[1].StatusCode)
+		}
+		// windows must be omitted from the JSON for the failed key, not
+		// serialized as null or a zero-value struct.
+		var raw struct {
+			Keys []struct {
+				Windows json.RawMessage `json:"windows"`
+			} `json:"keys"`
+		}
+		if err := json.Unmarshal(resp.Body, &raw); err != nil {
+			t.Fatalf("unmarshal raw error: %v", err)
+		}
+		if len(raw.Keys[1].Windows) != 0 {
+			t.Errorf("keys[1].windows in JSON = %s, want omitted", string(raw.Keys[1].Windows))
+		}
+		if !strings.Contains(usage.Keys[1].Error, "opencode upstream returned 401") {
+			t.Errorf("keys[1].error = %q, want upstream 401 mention", usage.Keys[1].Error)
+		}
+		if strings.Contains(string(resp.Body), "sk-bad-BBBB") {
+			t.Errorf("response leaks the raw key: %s", string(resp.Body))
+		}
+	})
+
+	t.Run("all keys 401 → 502", func(t *testing.T) {
+		resp, err := HandleManagement(context.Background(), postKeys("sk-bad-CCCC", "sk-bad-DDDD"), nil)
+		if err != nil {
+			t.Fatalf("HandleManagement error: %v", err)
+		}
+		if resp.StatusCode != http.StatusBadGateway {
+			t.Fatalf("StatusCode = %d, want 502 (all keys upstream-failed), body=%s", resp.StatusCode, string(resp.Body))
+		}
+		var usage OpenCodeMultiKeyResponse
+		if err := json.Unmarshal(resp.Body, &usage); err != nil {
+			t.Fatalf("unmarshal error: %v", err)
+		}
+		if usage.OK {
+			t.Errorf("OK = true, want false when all keys fail")
+		}
+		if usage.Error != "" {
+			t.Errorf("top-level error = %q, want empty (per-key errors carry the detail)", usage.Error)
+		}
+	})
+
+	t.Run("no keys configured → 400", func(t *testing.T) {
+		req := ManagementRequest{
+			Method: http.MethodGet,
+			Path:   "/v0/management/plugins/commandcode/opencode/usage",
+		}
+		resp, err := HandleManagement(context.Background(), req, &PluginConfig{})
+		if err != nil {
+			t.Fatalf("HandleManagement error: %v", err)
+		}
+		if resp.StatusCode != http.StatusBadRequest {
+			t.Fatalf("StatusCode = %d, want 400, body=%s", resp.StatusCode, string(resp.Body))
+		}
+		var usage OpenCodeMultiKeyResponse
+		if err := json.Unmarshal(resp.Body, &usage); err != nil {
+			t.Fatalf("unmarshal error: %v", err)
+		}
+		if !strings.HasPrefix(usage.Error, "no opencode api keys configured") {
+			t.Errorf("top-level error = %q, want prefix 'no opencode api keys configured'", usage.Error)
+		}
+	})
+
+	t.Run("POST body opencode_api_keys overrides config and wins over scalar", func(t *testing.T) {
+		body, _ := json.Marshal(map[string]any{
+			"opencode_api_key":  "sk-scalar-must-lose",
+			"opencode_api_keys": []string{"sk-good-AAAA"},
+			"opencode_api_base": ts.URL,
+		})
+		req := ManagementRequest{
+			Method: http.MethodPost,
+			Path:   "/plugins/commandcode/opencode/usage",
+			Body:   body,
+		}
+		cfg := &PluginConfig{OpenCodeAPIKey: "sk-config-must-lose", OpenCodeAPIBase: ts.URL}
+		resp, err := HandleManagement(context.Background(), req, cfg)
+		if err != nil {
+			t.Fatalf("HandleManagement error: %v", err)
+		}
+		if resp.StatusCode != http.StatusOK {
+			t.Fatalf("StatusCode = %d, want 200, body=%s", resp.StatusCode, string(resp.Body))
+		}
+		var usage OpenCodeMultiKeyResponse
+		if err := json.Unmarshal(resp.Body, &usage); err != nil {
+			t.Fatalf("unmarshal error: %v", err)
+		}
+		if len(usage.Keys) != 1 || usage.Keys[0].KeyID != MaskAPIKey("sk-good-AAAA") {
+			t.Errorf("keys = %+v, want only the body-list key (list wins over scalar and config)", usage.Keys)
+		}
+	})
+}
+
+// Regression: /plugins/commandcode/all must not be swallowed by the generic
+// "/usage" suffix match nor miss its dedicated handler.
+func TestHandleManagement_AllRoute_BothProvidersOK(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/usage" && r.Header.Get("Authorization") != "":
+			_, _ = w.Write([]byte(mockOpencodeUsageJSON))
+		case r.URL.Path == "/internal/billing/credits":
+			_, _ = w.Write([]byte(`{"credits":{"monthlyCredits":888},"windowLimits":{"fiveHour":{"used":2,"cap":20}}}`))
+		case r.URL.Path == "/internal/usage/summary":
+			_, _ = w.Write([]byte(`{"totalMonthlyCredits": 100}`))
+		default:
+			t.Errorf("unexpected upstream request: %s %s", r.Method, r.URL.Path)
+			http.NotFound(w, r)
+		}
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	cfg := &PluginConfig{
+		SessionToken:    "configured-token",
+		APIBase:         ts.URL,
+		OpenCodeAPIKey:  "sk-configured",
+		OpenCodeAPIBase: ts.URL,
+	}
+
+	req := ManagementRequest{
+		Method: http.MethodGet,
+		Path:   "/v0/management/plugins/commandcode/all",
+	}
+	resp, err := HandleManagement(context.Background(), req, cfg)
+	if err != nil {
+		t.Fatalf("HandleManagement error: %v", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("StatusCode = %d, want 200, body=%s", resp.StatusCode, string(resp.Body))
+	}
+
+	var all AllUsageResponse
+	if err := json.Unmarshal(resp.Body, &all); err != nil {
+		t.Fatalf("unmarshal body error: %v", err)
+	}
+	if !all.OK {
+		t.Fatal("expected ok=true when both providers succeed")
+	}
+	if len(all.CommandCode) == 0 || len(all.OpenCode) == 0 {
+		t.Fatalf("expected both provider payloads, got commandcode=%d bytes opencode=%d bytes",
+			len(all.CommandCode), len(all.OpenCode))
+	}
+	if len(all.Errors) != 0 {
+		t.Errorf("expected empty errors map, got %v", all.Errors)
+	}
+
+	var ccUsage FormattedUsageResponse
+	if err := json.Unmarshal(all.CommandCode, &ccUsage); err != nil || !ccUsage.OK {
+		t.Errorf("commandcode payload invalid: err=%v usage=%+v", err, ccUsage)
+	}
+	// v0.4.0: the opencode field carries the multi-key envelope.
+	var ocUsage OpenCodeMultiKeyResponse
+	if err := json.Unmarshal(all.OpenCode, &ocUsage); err != nil || !ocUsage.OK {
+		t.Errorf("opencode payload invalid: err=%v usage=%+v", err, ocUsage)
+	}
+	if len(ocUsage.Keys) != 1 || !ocUsage.Keys[0].OK || ocUsage.Keys[0].Windows == nil {
+		t.Errorf("opencode keys = %+v, want one successful key with windows", ocUsage.Keys)
+	}
+}
+
+// Partial failure: one provider fails upstream → ok stays true, the failed
+// provider's field is omitted and the error lands in the errors map.
+func TestHandleManagement_AllUsage_PartialFailure(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/usage" && r.Header.Get("Authorization") != "":
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(`{"error":"upstream exploded"}`))
+		case r.URL.Path == "/internal/billing/credits":
+			_, _ = w.Write([]byte(`{"credits":{"monthlyCredits":888},"windowLimits":{"fiveHour":{"used":2,"cap":20}}}`))
+		case r.URL.Path == "/internal/usage/summary":
+			_, _ = w.Write([]byte(`{"totalMonthlyCredits": 100}`))
+		default:
+			t.Errorf("unexpected upstream request: %s %s", r.Method, r.URL.Path)
+			http.NotFound(w, r)
+		}
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	cfg := &PluginConfig{
+		SessionToken:    "configured-token",
+		APIBase:         ts.URL,
+		OpenCodeAPIKey:  "sk-configured",
+		OpenCodeAPIBase: ts.URL,
+	}
+
+	req := ManagementRequest{
+		Method: http.MethodPost,
+		Path:   "/plugins/commandcode/all",
+	}
+	resp, err := HandleManagement(context.Background(), req, cfg)
+	if err != nil {
+		t.Fatalf("HandleManagement error: %v", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("StatusCode = %d, want 200 (partial failure), body=%s", resp.StatusCode, string(resp.Body))
+	}
+
+	var all AllUsageResponse
+	if err := json.Unmarshal(resp.Body, &all); err != nil {
+		t.Fatalf("unmarshal body error: %v", err)
+	}
+	if !all.OK {
+		t.Error("expected ok=true despite one provider failing")
+	}
+	if len(all.CommandCode) == 0 {
+		t.Error("expected successful commandcode payload to be present")
+	}
+	if _, present := all.Errors["opencode"]; !present {
+		t.Errorf("expected errors[opencode] to be set, got %v", all.Errors)
+	}
+	// v0.4.0: a configured-but-failed key is an upstream failure; with the
+	// single configured key failing, the aggregate message is "all N keys failed".
+	if !strings.Contains(all.Errors["opencode"], "all 1 opencode keys failed") {
+		t.Errorf("errors[opencode] = %q, want it to mention 'all 1 opencode keys failed'", all.Errors["opencode"])
+	}
+	// opencode field must be omitted (omitempty), not serialized as "null".
+	if strings.Contains(string(resp.Body), `"opencode":null`) {
+		t.Errorf("opencode field serialized as null: %s", string(resp.Body))
+	}
+}
+
+// All providers fail because credentials are missing → 400.
+func TestHandleManagement_AllUsage_AllMissingConfig(t *testing.T) {
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+
+	req := ManagementRequest{
+		Method: http.MethodGet,
+		Path:   "/v0/management/plugins/commandcode/all",
+	}
+	resp, err := HandleManagement(context.Background(), req, nil)
+	if err != nil {
+		t.Fatalf("HandleManagement error: %v", err)
+	}
+	if resp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("StatusCode = %d, want 400, body=%s", resp.StatusCode, string(resp.Body))
+	}
+
+	var all AllUsageResponse
+	if err := json.Unmarshal(resp.Body, &all); err != nil {
+		t.Fatalf("unmarshal body error: %v", err)
+	}
+	if all.OK {
+		t.Error("expected ok=false")
+	}
+	if _, present := all.Errors["commandcode"]; !present {
+		t.Errorf("expected errors[commandcode], got %v", all.Errors)
+	}
+	if _, present := all.Errors["opencode"]; !present {
+		t.Errorf("expected errors[opencode], got %v", all.Errors)
+	}
+}
+
+// Regression for the acceptance review finding: an upstream 400 passed
+// through by executeUsageQuery must NOT be classified as a local
+// configuration problem — all-upstream-failure must yield 502, not 400.
+func TestHandleManagement_AllUsage_Upstream400NotMisclassified(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusBadRequest)
+		_, _ = w.Write([]byte(`{"error":"bad request from upstream"}`))
+	}))
+	defer ts.Close()
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+
+	cfgYAML := []byte("session_token: testtoken\napi_base: " + ts.URL + "\nopencode_api_key: sk-test\nopencode_api_base: " + ts.URL + "\n")
+	cfg := NewPlugin()
+	if err := cfg.config.UpdateFromYAML(cfgYAML); err != nil {
+		t.Fatalf("UpdateFromYAML: %v", err)
+	}
+
+	req := ManagementRequest{
+		Method: http.MethodGet,
+		Path:   "/v0/management/plugins/commandcode/all",
+	}
+	resp, err := HandleManagement(context.Background(), req, cfg.config)
+	if err != nil {
+		t.Fatalf("HandleManagement error: %v", err)
+	}
+	if resp.StatusCode != http.StatusBadGateway {
+		t.Fatalf("StatusCode = %d, want 502 (upstream 400 must not be misread as local missing config), body=%s", resp.StatusCode, string(resp.Body))
+	}
+}
+
+// /all matrix (v0.4.0): Command Code upstream down + all opencode keys 401
+// → every failure is upstream → 502, with the aggregate "all N keys failed"
+// message in errors["opencode"].
+func TestHandleManagement_AllUsage_CCUpstreamDown_OpenCodeAll401(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/usage":
+			w.WriteHeader(http.StatusUnauthorized)
+			_, _ = w.Write([]byte(`{"error":"invalid api key"}`))
+		default: // commandcode internal endpoints
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(`{"error":"cc exploded"}`))
+		}
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	cfg := &PluginConfig{
+		SessionToken:    "configured-token",
+		APIBase:         ts.URL,
+		OpenCodeAPIKeys: []string{"sk-bad-AAAA", "sk-bad-BBBB"},
+		OpenCodeAPIBase: ts.URL,
+	}
+
+	req := ManagementRequest{
+		Method: http.MethodGet,
+		Path:   "/v0/management/plugins/commandcode/all",
+	}
+	resp, err := HandleManagement(context.Background(), req, cfg)
+	if err != nil {
+		t.Fatalf("HandleManagement error: %v", err)
+	}
+	if resp.StatusCode != http.StatusBadGateway {
+		t.Fatalf("StatusCode = %d, want 502 (all failures upstream), body=%s", resp.StatusCode, string(resp.Body))
+	}
+
+	var all AllUsageResponse
+	if err := json.Unmarshal(resp.Body, &all); err != nil {
+		t.Fatalf("unmarshal body error: %v", err)
+	}
+	if all.OK {
+		t.Error("expected ok=false")
+	}
+	if !strings.Contains(all.Errors["opencode"], "all 2 opencode keys failed") {
+		t.Errorf("errors[opencode] = %q, want 'all 2 opencode keys failed'", all.Errors["opencode"])
+	}
+}
+
+// /all matrix: Command Code upstream down + one opencode key succeeds → 200
+// (partial failure); the multi-key opencode payload is inlined.
+func TestHandleManagement_AllUsage_CCUpstreamDown_OpenCodeOneOK(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.URL.Path == "/usage" && r.Header.Get("Authorization") == "Bearer sk-good-AAAA":
+			_, _ = w.Write([]byte(mockOpencodeUsageJSON))
+		case r.URL.Path == "/usage":
+			w.WriteHeader(http.StatusUnauthorized)
+			_, _ = w.Write([]byte(`{"error":"invalid api key"}`))
+		default: // commandcode internal endpoints
+			w.WriteHeader(http.StatusInternalServerError)
+			_, _ = w.Write([]byte(`{"error":"cc exploded"}`))
+		}
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	cfg := &PluginConfig{
+		SessionToken:    "configured-token",
+		APIBase:         ts.URL,
+		OpenCodeAPIKeys: []string{"sk-good-AAAA", "sk-bad-BBBB"},
+		OpenCodeAPIBase: ts.URL,
+	}
+
+	req := ManagementRequest{
+		Method: http.MethodGet,
+		Path:   "/v0/management/plugins/commandcode/all",
+	}
+	resp, err := HandleManagement(context.Background(), req, cfg)
+	if err != nil {
+		t.Fatalf("HandleManagement error: %v", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("StatusCode = %d, want 200 (opencode partial success), body=%s", resp.StatusCode, string(resp.Body))
+	}
+
+	var all AllUsageResponse
+	if err := json.Unmarshal(resp.Body, &all); err != nil {
+		t.Fatalf("unmarshal body error: %v", err)
+	}
+	if !all.OK {
+		t.Error("expected ok=true (>=1 provider succeeded)")
+	}
+	if _, present := all.Errors["commandcode"]; !present {
+		t.Errorf("expected errors[commandcode], got %v", all.Errors)
+	}
+	if _, present := all.Errors["opencode"]; present {
+		t.Errorf("errors[opencode] must be absent on partial success, got %q", all.Errors["opencode"])
+	}
+	var oc OpenCodeMultiKeyResponse
+	if err := json.Unmarshal(all.OpenCode, &oc); err != nil || !oc.OK {
+		t.Fatalf("opencode payload invalid: err=%v oc=%+v", err, oc)
+	}
+	if len(oc.Keys) != 2 || !oc.Keys[0].OK || oc.Keys[1].OK {
+		t.Errorf("opencode keys = %+v, want [ok, failed]", oc.Keys)
+	}
+	if strings.Contains(string(resp.Body), "sk-good-AAAA") || strings.Contains(string(resp.Body), "sk-bad-BBBB") {
+		t.Errorf("/all response leaks a raw opencode key: %s", string(resp.Body))
+	}
+}
+
+func TestIsLocalCredentialError(t *testing.T) {
+	local := []string{
+		"session_token is required. Configure ...",
+		"opencode_api_key is required. Configure ...",
+		// v0.4.0 prefix: zero opencode keys configured is a local problem.
+		"no opencode api keys configured. Configure opencode_api_keys (YAML list) ...",
+	}
+	for _, msg := range local {
+		if !isLocalCredentialError(msg) {
+			t.Errorf("isLocalCredentialError(%q) = false, want true", msg)
+		}
+	}
+
+	upstream := []string{
+		"opencode upstream returned 401: check opencode_api_key",
+		"opencode upstream request failed: dial tcp: connection refused",
+		"all 2 opencode keys failed",
+		"upstream returned non-200 status",
+		"failed to parse opencode upstream usage: unexpected end of JSON input",
+		"",
+	}
+	for _, msg := range upstream {
+		if isLocalCredentialError(msg) {
+			t.Errorf("isLocalCredentialError(%q) = true, want false", msg)
+		}
+	}
+}
+
+// Unknown path after the new routes still 404s.
+func TestHandleManagement_UnknownPath(t *testing.T) {
+	req := ManagementRequest{
+		Method: http.MethodGet,
+		Path:   "/v0/management/plugins/commandcode/nonsense",
+	}
+	resp, err := HandleManagement(context.Background(), req, nil)
+	if err != nil {
+		t.Fatalf("HandleManagement error: %v", err)
+	}
+	if resp.StatusCode != http.StatusNotFound {
+		t.Fatalf("StatusCode = %d, want 404", resp.StatusCode)
+	}
+}

plugin/plugin.go

@@ -13,7 +13,7 @@ import (
 const (
 	PluginID       = "commandcode"
 	PluginName     = "commandcode"
-	PluginVersion  = "0.2.2"
+	PluginVersion  = "0.4.5"
 	PluginAuthor   = "zgs225"
 	PluginRepo     = "https://github.com/zgs225/cliproxy-plugin-commandcode"
 	PluginLogo     = "https://raw.githubusercontent.com/zgs225/cliproxy-plugin-commandcode/main/assets/logo.svg"
@@ -25,6 +25,9 @@ type PluginConfig struct {
 	mu              sync.RWMutex
 	SessionToken    string   `yaml:"session_token" json:"session_token"`
 	APIBase         string   `yaml:"api_base" json:"api_base"`
+	OpenCodeAPIKey  string   `yaml:"opencode_api_key" json:"opencode_api_key"`
+	OpenCodeAPIKeys []string `yaml:"opencode_api_keys" json:"opencode_api_keys"`
+	OpenCodeAPIBase string   `yaml:"opencode_api_base" json:"opencode_api_base"`
 }
 
 // UpdateFromYAML updates the configuration from raw YAML bytes.
@@ -35,6 +38,9 @@ func (c *PluginConfig) UpdateFromYAML(raw []byte) error {
 	var tmp struct {
 		SessionToken    string   `yaml:"session_token"`
 		APIBase         string   `yaml:"api_base"`
+		OpenCodeAPIKey  string   `yaml:"opencode_api_key"`
+		OpenCodeAPIKeys []string `yaml:"opencode_api_keys"`
+		OpenCodeAPIBase string   `yaml:"opencode_api_base"`
 	}
 	if err := yaml.Unmarshal(raw, &tmp); err != nil {
 		return fmt.Errorf("unmarshal config_yaml: %w", err)
@@ -49,6 +55,23 @@ func (c *PluginConfig) UpdateFromYAML(raw []byte) error {
 	if tmp.APIBase != "" {
 		c.APIBase = strings.TrimRight(tmp.APIBase, "/")
 	}
+	if tmp.OpenCodeAPIKey != "" {
+		// OpenCode API key is a plain Bearer token; do not run it through
+		// ExtractSessionToken (that is Command Code cookie specific).
+		c.OpenCodeAPIKey = strings.TrimSpace(tmp.OpenCodeAPIKey)
+	}
+	// Merge rule: opencode_api_keys (YAML list) wins when non-empty after
+	// trimming/dedup; otherwise opencode_api_key (scalar) degrades to a
+	// single-key list; both empty means no keys.
+	c.OpenCodeAPIKeys = normalizeOpenCodeKeys(tmp.OpenCodeAPIKeys)
+	if len(c.OpenCodeAPIKeys) == 0 {
+		if single := strings.TrimSpace(tmp.OpenCodeAPIKey); single != "" {
+			c.OpenCodeAPIKeys = []string{single}
+		}
+	}
+	if tmp.OpenCodeAPIBase != "" {
+		c.OpenCodeAPIBase = strings.TrimRight(tmp.OpenCodeAPIBase, "/")
+	}
 	if c.APIBase == "" {
 		c.APIBase = DefaultAPIBase
 	}
@@ -79,6 +102,59 @@ func (c *PluginConfig) GetAPIBase() string {
 	return c.APIBase
 }
 
+// GetOpenCodeAPIKey safely returns the single configured OpenCode Go API key
+// (scalar opencode_api_key field; kept for backward compatibility).
+func (c *PluginConfig) GetOpenCodeAPIKey() string {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	return c.OpenCodeAPIKey
+}
+
+// GetOpenCodeAPIKeys safely returns the configured OpenCode Go API keys.
+// The list field wins; when it is empty the scalar OpenCodeAPIKey degrades
+// to a single-key list (same merge rule as UpdateFromYAML). The returned
+// slice is a copy; callers may not mutate it.
+func (c *PluginConfig) GetOpenCodeAPIKeys() []string {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	if len(c.OpenCodeAPIKeys) > 0 {
+		out := make([]string, len(c.OpenCodeAPIKeys))
+		copy(out, c.OpenCodeAPIKeys)
+		return out
+	}
+	if c.OpenCodeAPIKey != "" {
+		return []string{c.OpenCodeAPIKey}
+	}
+	return nil
+}
+
+// normalizeOpenCodeKeys trims each key, drops empties and dedups while
+// preserving the original order.
+func normalizeOpenCodeKeys(keys []string) []string {
+	out := make([]string, 0, len(keys))
+	seen := make(map[string]bool, len(keys))
+	for _, k := range keys {
+		k = strings.TrimSpace(k)
+		if k == "" || seen[k] {
+			continue
+		}
+		seen[k] = true
+		out = append(out, k)
+	}
+	return out
+}
+
+// GetOpenCodeAPIBase safely returns the OpenCode Go API base URL,
+// falling back to DefaultOpenCodeAPIBase when unset.
+func (c *PluginConfig) GetOpenCodeAPIBase() string {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	if c.OpenCodeAPIBase == "" {
+		return DefaultOpenCodeAPIBase
+	}
+	return c.OpenCodeAPIBase
+}
+
 // Plugin encapsulates the Command Code plugin instance.
 type Plugin struct {
 	config *PluginConfig
@@ -148,6 +224,21 @@ func (p *Plugin) handleRegister(raw []byte) ([]byte, error) {
 					Type:        "string",
 					Description: "Command Code API base URL (default: https://api.commandcode.ai)",
 				},
+				{
+					Name:        "opencode_api_key",
+					Type:        "string",
+					Description: "OpenCode Go API key (single Bearer token; degraded path when opencode_api_keys is unset)",
+				},
+				{
+					Name:        "opencode_api_keys",
+					Type:        "string",
+					Description: "OpenCode Go API keys as a YAML list (e.g. opencode_api_keys: [\"sk-KEY1\", \"sk-KEY2\"]); takes precedence over opencode_api_key",
+				},
+				{
+					Name:        "opencode_api_base",
+					Type:        "string",
+					Description: "OpenCode Go API base URL (default: https://opencode.ai/zen/go/v1)",
+				},
 			},
 		},
 		Capabilities: RegistrationCapability{

plugin/plugin_test.go

@@ -46,16 +46,16 @@ api_base: "https://custom-api.commandcode.ai"
 		t.Errorf("Capabilities.ManagementAPI = false, want true")
 	}
 
-	// Verify config fields
-	if len(reg.Metadata.ConfigFields) != 2 {
-		t.Fatalf("ConfigFields len = %d, want 2", len(reg.Metadata.ConfigFields))
+	// Verify config fields (v0.4.0: 4 → 5, adds opencode_api_keys)
+	if len(reg.Metadata.ConfigFields) != 5 {
+		t.Fatalf("ConfigFields len = %d, want 5", len(reg.Metadata.ConfigFields))
 	}
 	fieldNames := map[string]bool{}
 	for _, f := range reg.Metadata.ConfigFields {
 		fieldNames[f.Name] = true
 	}
-	if !fieldNames["session_token"] || !fieldNames["api_base"] {
-		t.Errorf("ConfigFields missing session_token or api_base: %+v", reg.Metadata.ConfigFields)
+	if !fieldNames["session_token"] || !fieldNames["api_base"] || !fieldNames["opencode_api_key"] || !fieldNames["opencode_api_keys"] || !fieldNames["opencode_api_base"] {
+		t.Errorf("ConfigFields missing expected fields: %+v", reg.Metadata.ConfigFields)
 	}
 
 	// Verify config parsed
@@ -65,7 +65,6 @@ api_base: "https://custom-api.commandcode.ai"
 	if p.config.GetAPIBase() != "https://custom-api.commandcode.ai" {
 		t.Errorf("APIBase = %q, want https://custom-api.commandcode.ai", p.config.GetAPIBase())
 	}
-
 	// Test plugin.reconfigure
 	reconfYAML := []byte(`
 session_token: "new-token-abc"
@@ -135,3 +134,125 @@ func TestEnvelopeError(t *testing.T) {
 		t.Errorf("env.Error = %+v", env.Error)
 	}
 }
+
+func TestPluginConfig_OpenCode(t *testing.T) {
+	p := NewPlugin()
+	configYAML := []byte("opencode_api_key: \" sk-opencode-123 \"\nopencode_api_base: \"https://custom.oc.example/v1/\"\n")
+	lifecycleReq, _ := json.Marshal(LifecycleRequest{ConfigYAML: configYAML})
+
+	if _, err := p.HandleMethod("plugin.register", lifecycleReq); err != nil {
+		t.Fatalf("handleMethod(plugin.register) error: %v", err)
+	}
+
+	if got := p.config.GetOpenCodeAPIKey(); got != "sk-opencode-123" {
+		t.Errorf("OpenCodeAPIKey = %q, want sk-opencode-123", got)
+	}
+	if got := p.config.GetOpenCodeAPIBase(); got != "https://custom.oc.example/v1" {
+		t.Errorf("OpenCodeAPIBase = %q, want https://custom.oc.example/v1 (trailing slash trimmed)", got)
+	}
+
+	// A Command Code cookie string must NOT be run through ExtractSessionToken.
+	cookieLike := []byte("opencode_api_key: \"sk-raw-bearer-value\"\n")
+	req2, _ := json.Marshal(LifecycleRequest{ConfigYAML: cookieLike})
+	if _, err := p.HandleMethod("plugin.reconfigure", req2); err != nil {
+		t.Fatalf("handleMethod(plugin.reconfigure) error: %v", err)
+	}
+	if got := p.config.GetOpenCodeAPIKey(); got != "sk-raw-bearer-value" {
+		t.Errorf("OpenCodeAPIKey = %q, want sk-raw-bearer-value (raw, no cookie extraction)", got)
+	}
+
+	// Empty config falls back to the default base.
+	empty := NewPlugin()
+	if got := empty.config.GetOpenCodeAPIBase(); got != DefaultOpenCodeAPIBase {
+		t.Errorf("default OpenCodeAPIBase = %q, want %q", got, DefaultOpenCodeAPIBase)
+	}
+	if got := empty.config.GetOpenCodeAPIKey(); got != "" {
+		t.Errorf("default OpenCodeAPIKey = %q, want empty", got)
+	}
+	if got := empty.config.GetOpenCodeAPIKeys(); len(got) != 0 {
+		t.Errorf("default GetOpenCodeAPIKeys = %v, want empty", got)
+	}
+}
+
+func TestPluginConfig_OpenCodeAPIKeys(t *testing.T) {
+	newCfg := func(t *testing.T, yaml string) *PluginConfig {
+		t.Helper()
+		cfg := &PluginConfig{}
+		if err := cfg.UpdateFromYAML([]byte(yaml)); err != nil {
+			t.Fatalf("UpdateFromYAML error: %v", err)
+		}
+		return cfg
+	}
+
+	t.Run("list takes precedence over scalar", func(t *testing.T) {
+		cfg := newCfg(t, `
+opencode_api_key: "sk-scalar"
+opencode_api_keys:
+  - " sk-key1 "
+  - "sk-key2"
+`)
+		got := cfg.GetOpenCodeAPIKeys()
+		if len(got) != 2 || got[0] != "sk-key1" || got[1] != "sk-key2" {
+			t.Errorf("GetOpenCodeAPIKeys = %v, want [sk-key1 sk-key2] (list wins, trimmed)", got)
+		}
+		if cfg.GetOpenCodeAPIKey() != "sk-scalar" {
+			t.Errorf("GetOpenCodeAPIKey = %q, want sk-scalar (scalar field kept)", cfg.GetOpenCodeAPIKey())
+		}
+	})
+
+	t.Run("scalar degrades to single-key list", func(t *testing.T) {
+		cfg := newCfg(t, `
+opencode_api_key: " sk-only "
+`)
+		got := cfg.GetOpenCodeAPIKeys()
+		if len(got) != 1 || got[0] != "sk-only" {
+			t.Errorf("GetOpenCodeAPIKeys = %v, want [sk-only]", got)
+		}
+	})
+
+	t.Run("dedup preserve order and drop empties", func(t *testing.T) {
+		cfg := newCfg(t, `
+opencode_api_keys:
+  - "sk-b"
+  - ""
+  - "  "
+  - "sk-a"
+  - "sk-b"
+  - "sk-c"
+  - "sk-a"
+`)
+		got := cfg.GetOpenCodeAPIKeys()
+		want := []string{"sk-b", "sk-a", "sk-c"}
+		if len(got) != len(want) {
+			t.Fatalf("GetOpenCodeAPIKeys = %v, want %v", got, want)
+		}
+		for i := range want {
+			if got[i] != want[i] {
+				t.Errorf("GetOpenCodeAPIKeys[%d] = %q, want %q (order preserved, deduped)", i, got[i], want[i])
+			}
+		}
+	})
+
+	t.Run("all empty yields no keys", func(t *testing.T) {
+		for _, yaml := range []string{
+			`opencode_api_key: ""`,
+			"opencode_api_keys: []\nopencode_api_key: \"   \"",
+			"opencode_api_keys:\n  - \"\"\n  - \"   \"",
+		} {
+			cfg := newCfg(t, yaml)
+			if got := cfg.GetOpenCodeAPIKeys(); len(got) != 0 {
+				t.Errorf("yaml %q: GetOpenCodeAPIKeys = %v, want empty", yaml, got)
+			}
+		}
+	})
+
+	t.Run("getter returns a copy", func(t *testing.T) {
+		cfg := newCfg(t, "opencode_api_keys:\n  - sk-a\n  - sk-b\n")
+		got := cfg.GetOpenCodeAPIKeys()
+		got[0] = "mutated"
+		again := cfg.GetOpenCodeAPIKeys()
+		if again[0] != "sk-a" {
+			t.Errorf("GetOpenCodeAPIKeys not a copy: after mutation got %q", again[0])
+		}
+	})
+}

plugin/quota_page.go

@@ -10,7 +10,7 @@ const QuotaPageHTML = `<!DOCTYPE html>
 <head>
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Command Code 配额与用量 - CLIProxyAPI</title>
+  <title>用量配额 - CLIProxyAPI</title>
   <style>
     :root {
       --bg-page: #f8fafc;
@@ -217,11 +217,6 @@ const QuotaPageHTML = `<!DOCTYPE html>
       }
     }
 
-    .brand-subtitle {
-      font-size: 13px;
-      color: var(--text-muted);
-    }
-
     .action-group {
       display: flex;
       align-items: center;
@@ -622,6 +617,266 @@ const QuotaPageHTML = `<!DOCTYPE html>
       letter-spacing: 0.5px;
     }
 
+    /* Tab Bar (Command Code | OpenCode Go | All) */
+    .tab-bar {
+      display: flex;
+      gap: 6px;
+      background: var(--bg-card);
+      border: 1px solid var(--border-color);
+      border-radius: var(--radius-lg);
+      padding: 6px;
+      margin-bottom: 20px;
+      box-shadow: var(--shadow-sm);
+    }
+
+    .tab-btn {
+      flex: 1;
+      border: none;
+      background: transparent;
+      color: var(--text-muted);
+      font-size: 13px;
+      font-weight: 600;
+      padding: 8px 12px;
+      border-radius: var(--radius-md);
+      cursor: pointer;
+      transition: all 0.2s ease;
+      font-family: inherit;
+    }
+
+    .tab-btn:hover {
+      color: var(--text-main);
+      background: var(--bg-subtle);
+    }
+
+    .tab-btn.active {
+      background: var(--primary);
+      color: #fff;
+    }
+
+    .tab-section {
+      display: none;
+    }
+
+    .tab-section.active {
+      display: block;
+    }
+
+    /* Command Code tab head: title + plan badge (planBadge moved out of header) */
+    .cc-tab-head {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      margin-bottom: 16px;
+      gap: 10px;
+    }
+
+    .cc-tab-title {
+      font-size: 15px;
+      font-weight: 700;
+      color: var(--text-main);
+    }
+
+    /* OpenCode multi-key groups: one group per key, 3 compact window rows each */
+    .oc-key-group {
+      background: var(--bg-card);
+      border: 1px solid var(--border-color);
+      border-radius: var(--radius-lg);
+      padding: 20px;
+      box-shadow: var(--shadow-sm);
+      display: flex;
+      flex-direction: column;
+      gap: 12px;
+      margin-bottom: 16px;
+    }
+
+    .oc-key-head {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      gap: 10px;
+    }
+
+    .oc-key-id {
+      font-size: 13px;
+      font-family: monospace;
+      color: var(--text-muted);
+    }
+
+    .oc-key-body {
+      display: flex;
+      flex-direction: column;
+      gap: 10px;
+    }
+
+    .oc-win-row {
+      display: grid;
+      grid-template-columns: 92px 1fr 52px 84px;
+      align-items: center;
+      gap: 12px;
+    }
+
+    @media (max-width: 640px) {
+      .oc-win-row {
+        grid-template-columns: 86px 1fr 48px;
+      }
+      .oc-win-reset {
+        display: none;
+      }
+    }
+
+    .oc-win-name {
+      font-size: 12px;
+      font-weight: 600;
+      color: var(--text-muted);
+      white-space: nowrap;
+    }
+
+    /* .progress-track combo class: 8px mini bar, same as .all-grid */
+    .oc-win-bar {
+      height: 8px;
+    }
+
+    .oc-win-pct {
+      font-size: 13px;
+      font-weight: 700;
+      color: var(--text-main);
+      white-space: nowrap;
+      font-feature-settings: "tnum";
+    }
+
+    .oc-win-pct.warn { color: var(--warning); }
+    .oc-win-pct.bad { color: var(--danger); }
+
+    /* .countdown-timer combo class: smaller reset countdown */
+    .oc-win-reset {
+      font-size: 12px;
+    }
+
+    .oc-key-error {
+      font-size: 12px;
+      color: var(--danger);
+      word-break: break-all;
+    }
+
+    .all-key-id {
+      font-family: monospace;
+      font-size: 12px;
+    }
+
+    textarea.form-control {
+      resize: vertical;
+    }
+
+    /* All tab: two provider cards side by side */
+    .all-grid {
+      display: grid;
+      grid-template-columns: 1fr 1fr;
+      gap: 20px;
+      margin-bottom: 24px;
+    }
+
+    @media (max-width: 768px) {
+      .all-grid {
+        grid-template-columns: 1fr;
+      }
+    }
+
+    .all-group-title {
+      font-size: 13px;
+      font-weight: 700;
+      color: var(--text-muted);
+      margin: 8px 0 10px 2px;
+    }
+
+    .all-group-title:first-child {
+      margin-top: 0;
+    }
+
+    .all-provider-card {
+      background: var(--bg-card);
+      border: 1px solid var(--border-color);
+      border-radius: var(--radius-lg);
+      padding: 20px;
+      box-shadow: var(--shadow-sm);
+      display: flex;
+      flex-direction: column;
+      gap: 12px;
+    }
+
+    .all-provider-head {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      gap: 10px;
+    }
+
+    .all-provider-name {
+      font-size: 15px;
+      font-weight: 700;
+      color: var(--text-main);
+    }
+
+    .all-provider-body {
+      display: flex;
+      flex-direction: column;
+      gap: 8px;
+    }
+
+    .all-summary-row {
+      display: flex;
+      justify-content: space-between;
+      align-items: baseline;
+      gap: 10px;
+      font-size: 13px;
+      color: var(--text-muted);
+    }
+
+    .all-summary-value {
+      font-weight: 700;
+      color: var(--text-main);
+      font-feature-settings: "tnum";
+    }
+
+    .all-grid .progress-track {
+      height: 8px;
+    }
+
+    /* Per-tab provider failure error cards */
+    .error-card {
+      display: none;
+      background: var(--danger-subtle);
+      border: 1px solid rgba(239, 68, 68, 0.3);
+      border-radius: var(--radius-lg);
+      padding: 20px;
+      margin-bottom: 20px;
+      flex-direction: column;
+      gap: 8px;
+    }
+
+    .error-card.show {
+      display: flex;
+    }
+
+    .error-card-title {
+      color: var(--danger);
+      font-weight: 700;
+      font-size: 14px;
+      display: flex;
+      align-items: center;
+      gap: 8px;
+    }
+
+    .error-card-msg {
+      color: var(--danger);
+      font-size: 13px;
+      word-break: break-all;
+    }
+
+    .form-hint {
+      font-size: 11px;
+      color: var(--text-dim);
+    }
+
     /* Footer */
     .footer-bar {
       display: flex;
@@ -662,20 +917,13 @@ const QuotaPageHTML = `<!DOCTYPE html>
         </div>
         <div>
           <div class="brand-title">
-            Command Code 配额
-            <span class="version-tag">v0.2.2</span>
-            <span id="planBadge" class="plan-tag" style="display:none;">Plan: -</span>
+            用量配额
+            <span class="version-tag">v0.4.5</span>
           </div>
-          <div class="brand-subtitle">CLIProxyAPI 实时限额与 Credits 用量监控</div>
         </div>
       </div>
 
       <div class="action-group">
-        <div id="statusBadge" class="status-badge">
-          <span class="status-dot"></span>
-          <span id="statusText">正在检查...</span>
-        </div>
-
         <button id="btnSettings" class="btn" title="配置选项">
           <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
             <circle cx="12" cy="12" r="3"></circle>
@@ -694,6 +942,13 @@ const QuotaPageHTML = `<!DOCTYPE html>
       </div>
     </div>
 
+    <!-- Tab Bar -->
+    <div id="tabBar" class="tab-bar">
+      <button type="button" class="tab-btn active" data-tab="all">All</button>
+      <button type="button" class="tab-btn" data-tab="commandcode">Command Code</button>
+      <button type="button" class="tab-btn" data-tab="opencode">OpenCode Go</button>
+    </div>
+
     <!-- Alert Message -->
     <div id="alertBox" class="alert alert-danger">
       <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="12"></line><line x1="12" y1="16" x2="12.01" y2="16"></line></svg>
@@ -715,12 +970,33 @@ const QuotaPageHTML = `<!DOCTYPE html>
           <label for="inputSessionToken">Command Code 会话 Token (Session Token 测试)</label>
           <input type="password" id="inputSessionToken" class="form-control" placeholder="覆盖测试: __Secure-commandcode_prod_.session_token" />
         </div>
+        <div class="form-group">
+          <label for="inputOpenCodeKeys">OpenCode Go API Keys (测试覆盖)</label>
+          <textarea id="inputOpenCodeKeys" class="form-control" rows="3" placeholder="每行一个 sk-..."></textarea>
+          <span class="form-hint">每行一个 key；仅当次请求生效，不持久化</span>
+        </div>
       </div>
       <div style="margin-top: 14px; display: flex; justify-content: flex-end; gap: 10px;">
         <button id="btnSaveConfig" class="btn btn-primary">保存并重新获取用量</button>
       </div>
     </div>
 
+    <!-- Tab: Command Code -->
+    <div id="sectionCommandcode" class="tab-section">
+      <div id="ccErrorCard" class="error-card">
+        <div class="error-card-title">
+          <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="12"></line><line x1="12" y1="16" x2="12.01" y2="16"></line></svg>
+          <span>Command Code 查询失败</span>
+        </div>
+        <div id="ccErrorMsg" class="error-card-msg">-</div>
+      </div>
+
+      <div id="ccContent">
+        <div class="cc-tab-head">
+          <span class="cc-tab-title">Command Code</span>
+          <span id="planBadge" class="plan-tag" style="display:none;">Plan: -</span>
+        </div>
+
     <!-- Overview Metrics -->
     <div class="metrics-grid">
       <div class="metric-card">
@@ -847,18 +1123,56 @@ const QuotaPageHTML = `<!DOCTYPE html>
       </div>
     </div>
 
+      </div>
+    </div>
+    <!-- /Tab: Command Code -->
+
+    <!-- Tab: OpenCode Go -->
+    <div id="sectionOpencode" class="tab-section">
+      <div id="ocErrorCard" class="error-card">
+        <div class="error-card-title">
+          <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="12"></line><line x1="12" y1="16" x2="12.01" y2="16"></line></svg>
+          <span>OpenCode Go 查询失败</span>
+        </div>
+        <div id="ocErrorMsg" class="error-card-msg">-</div>
+      </div>
+      <div id="ocContent"></div>
+    </div>
+    <!-- /Tab: OpenCode Go -->
+
+    <!-- Tab: All -->
+    <div id="sectionAll" class="tab-section active">
+      <!-- All tab: vertical groups, one group title per provider -->
+      <div class="all-group-title">Command Code</div>
+      <div class="all-provider-card">
+        <div class="all-provider-head">
+          <span id="allBadgeCommandcode" class="status-badge"><span class="status-dot"></span><span id="allBadgeTextCommandcode">-</span></span>
+        </div>
+        <div id="allBodyCommandcode" class="all-provider-body">尚未加载</div>
+      </div>
+
+      <div class="all-group-title">OpenCode Go</div>
+      <div class="all-provider-card">
+        <div class="all-provider-head">
+          <span id="allBadgeOpencode" class="status-badge"><span class="status-dot"></span><span id="allBadgeTextOpencode">-</span></span>
+        </div>
+        <div id="allBodyOpencode" class="all-provider-body">尚未加载</div>
+      </div>
+    </div>
+    <!-- /Tab: All -->
+
     <!-- Footer Status -->
     <div class="footer-bar">
       <div>最后同步时间: <span id="lastUpdated">-</span></div>
       <div class="footer-links">
-        <span id="authInfo">Provider: commandcode</span>
+        <span id="authInfo">Provider: commandcode + opencode_go</span>
       </div>
     </div>
   </div>
 
   <script>
     (function () {
-      const USAGE_ENDPOINT = "/v0/management/plugins/commandcode/usage";
+      const ALL_ENDPOINT = "/v0/management/plugins/commandcode/all";
 
       // Elements
       const btnRefresh = document.getElementById("btnRefresh");
@@ -869,12 +1183,27 @@ const QuotaPageHTML = `<!DOCTYPE html>
       const settingsDrawer = document.getElementById("settingsDrawer");
       const inputMgmtKey = document.getElementById("inputMgmtKey");
       const inputSessionToken = document.getElementById("inputSessionToken");
+      const inputOpenCodeKeys = document.getElementById("inputOpenCodeKeys");
       const alertBox = document.getElementById("alertBox");
       const alertMsg = document.getElementById("alertMsg");
-      const statusBadge = document.getElementById("statusBadge");
-      const statusText = document.getElementById("statusText");
       const planBadge = document.getElementById("planBadge");
 
+      // Tab sections and per-provider error cards
+      const ccContent = document.getElementById("ccContent");
+      const ccErrorCard = document.getElementById("ccErrorCard");
+      const ccErrorMsg = document.getElementById("ccErrorMsg");
+      const ocContent = document.getElementById("ocContent");
+      const ocErrorCard = document.getElementById("ocErrorCard");
+      const ocErrorMsg = document.getElementById("ocErrorMsg");
+
+      // All tab elements
+      const allBodyCommandcode = document.getElementById("allBodyCommandcode");
+      const allBadgeCommandcode = document.getElementById("allBadgeCommandcode");
+      const allBadgeTextCommandcode = document.getElementById("allBadgeTextCommandcode");
+      const allBodyOpencode = document.getElementById("allBodyOpencode");
+      const allBadgeOpencode = document.getElementById("allBadgeOpencode");
+      const allBadgeTextOpencode = document.getElementById("allBadgeTextOpencode");
+
       const valMonthlyCredits = document.getElementById("valMonthlyCredits");
       const valOpensourceCredits = document.getElementById("valOpensourceCredits");
       const valTotalCredits = document.getElementById("valTotalCredits");
@@ -904,11 +1233,19 @@ const QuotaPageHTML = `<!DOCTYPE html>
       const timerWeekly = document.getElementById("timerWeekly");
       const lastUpdated = document.getElementById("lastUpdated");
 
-      let monthlyTargetTime = null;
       let fiveHourTargetTime = null;
+      let monthlyTargetTime = null;
+      
       let weeklyTargetTime = null;
       let timerInterval = null;
 
+      // Per-provider render state (drives tab badge aggregation)
+      const providerState = {
+        commandcode: { level: "unknown", err: null, data: null },
+        opencode: { level: "unknown", err: null, data: null }
+      };
+      let activeTab = "all";
+
       function getStoredManagementKey() {
         if (inputMgmtKey.value.trim()) {
           return inputMgmtKey.value.trim();
@@ -965,6 +1302,77 @@ const QuotaPageHTML = `<!DOCTYPE html>
         return n < 10 ? "0" + n : n;
       }
 
+      function esc(s) {
+        return String(s)
+          .replace(/&/g, "&amp;")
+          .replace(/</g, "&lt;")
+          .replace(/>/g, "&gt;")
+          .replace(/"/g, "&quot;");
+      }
+
+      // Returns a clamped number in [0,100], or null when missing/invalid
+      function clampPercent(v) {
+        if (v === null || v === undefined || v === "") return null;
+        const n = Number(v);
+        if (!isFinite(n)) return null;
+        return Math.min(100, Math.max(0, n));
+      }
+
+      // Unknown status values never error: only explicit exceeded flag,
+      // status "exceeded", or percent >= 100 count as exceeded
+      function levelOf(pct, exceeded, status) {
+        if (exceeded || status === "exceeded" || (pct !== null && pct >= 100)) return "exceeded";
+        if (pct !== null && pct >= 80) return "warning";
+        return "online";
+      }
+
+      const LEVEL_RANK = { unknown: -1, online: 0, warning: 1, error: 2, exceeded: 3 };
+      const BADGE_TEXT = {
+        unknown: "正在检查...",
+        online: "正常运行 (Normal)",
+        warning: "配额紧张 (Warning)",
+        exceeded: "已达限额 (Exceeded)",
+        error: "查询错误"
+      };
+
+      function badgeVisualClass(level) {
+        // error reuses the danger/exceeded look
+        return level === "error" ? "exceeded" : level === "unknown" ? "" : level;
+      }
+
+      function setProviderStatus(provider, level) {
+        providerState[provider].level = level;
+        providerState[provider].err = null;
+      }
+
+      function summaryRow(label, value) {
+        return '<div class="all-summary-row"><span class="all-summary-label">' + label + '</span><span class="all-summary-value">' + value + '</span></div>';
+      }
+
+      function miniBar(pct, level) {
+        const cls = level === "exceeded" ? " danger" : level === "warning" ? " warning" : "";
+        const w = pct === null ? 0 : pct;
+        return '<div class="progress-track"><div class="progress-bar' + cls + '" style="width:' + w + '%"></div></div>';
+      }
+
+      function showProviderError(provider, msg) {
+        providerState[provider].level = "error";
+        providerState[provider].err = msg;
+        providerState[provider].data = null;
+        if (provider === "commandcode") {
+          ccContent.style.display = "none";
+          ccErrorMsg.textContent = msg;
+          ccErrorCard.classList.add("show");
+        } else {
+          ocContent.style.display = "none";
+          ocErrorMsg.textContent = msg;
+          ocErrorCard.classList.add("show");
+        }
+      }
+
+      // Multi-window countdown elements carry their reset info in data
+      // attributes (data-reset-at ISO string, or data-reset-secs seconds),
+      // so updateTimers() can walk every tab容器's .oc-win-reset uniformly
       function updateTimers() {
         if (monthlyTargetTime) {
           timerMonthly.textContent = formatCountdown(monthlyTargetTime);
@@ -975,10 +1383,28 @@ const QuotaPageHTML = `<!DOCTYPE html>
         if (weeklyTargetTime) {
           timerWeekly.textContent = formatCountdown(weeklyTargetTime);
         }
+        const allResetEls = document.querySelectorAll(".oc-win-reset");
+        for (let i = 0; i < allResetEls.length; i++) {
+          const el = allResetEls[i];
+          let target = null;
+          const at = el.getAttribute("data-reset-at");
+          if (at) {
+            const t = new Date(at);
+            if (!isNaN(t.getTime())) target = t;
+          }
+          if (!target) {
+            const secs = Number(el.getAttribute("data-reset-secs"));
+            if (secs > 0) target = new Date(Date.now() + secs * 1000);
+          }
+          el.textContent = target ? formatCountdown(target) : "-";
+        }
       }
 
       function renderUsage(data) {
-        hideAlert();
+        providerState.commandcode.err = null;
+        providerState.commandcode.data = data;
+        ccContent.style.display = "";
+        ccErrorCard.classList.remove("show");
         const credits = data.credits || (data.data && data.data.credits) || {};
         const limits = data.window_limits || (data.data && data.data.window_limits) || {};
 
@@ -1051,27 +1477,238 @@ const QuotaPageHTML = `<!DOCTYPE html>
           weeklyTargetTime = null;
         }
 
-        // Overall Status
+        // Per-provider status; consumed by All tab provider badges
+        let ccLevel;
         if (fiveHour.exceeded || weekly.exceeded || monthly.exceeded) {
-          statusBadge.className = "status-badge exceeded";
-          statusText.textContent = "已达限额 (Exceeded)";
+          ccLevel = "exceeded";
         } else if (pFive >= 80 || pWeek >= 80 || pMonth >= 80) {
-          statusBadge.className = "status-badge warning";
-          statusText.textContent = "配额紧张 (Warning)";
+          ccLevel = "warning";
         } else {
-          statusBadge.className = "status-badge online";
-          statusText.textContent = "正常运行 (Normal)";
-        }
-
-        const updatedAtStr = data.updated_at || (data.data && data.data.updated_at);
-        if (updatedAtStr) {
-          lastUpdated.textContent = new Date(updatedAtStr).toLocaleString();
-        } else {
-          lastUpdated.textContent = new Date().toLocaleString();
+          ccLevel = "online";
         }
+        setProviderStatus("commandcode", ccLevel);
 
         updateTimers();
       }
+      function renderOpencode(data) {
+        providerState.opencode.err = null;
+        providerState.opencode.data = data;
+
+        // 多 key 契约：keys[] 为空/缺失视为 provider 级失败，走全局错误卡片
+        const keys = data && Array.isArray(data.keys) ? data.keys : [];
+        if (keys.length === 0) {
+          showProviderError("opencode", (data && data.error) || "OpenCode 未返回任何 key 数据");
+          return;
+        }
+
+        ocContent.style.display = "";
+        ocErrorCard.classList.remove("show");
+
+        // All tab 的 OpenCode 组与本 tab 共用同一套逐 key 渲染逻辑
+        const rendered = renderOpenCodeKeyGroups(keys);
+        ocContent.innerHTML = rendered.html;
+        updateTimers();
+
+        setProviderStatus("opencode", rendered.worst);
+      }
+
+      // Shared per-key group renderer: the OpenCode tab and the All tab's
+      // OpenCode group both consume this to avoid logic drift. Returns
+      // { html, worst }. Countdown info is stamped into data-reset-at (ISO
+      // string) or data-reset-secs (seconds) attributes on .oc-win-reset
+      // elements, so updateTimers() uniformly walks every tab container.
+      function renderOpenCodeKeyGroups(keys) {
+        const WIN_DEFS = [
+          { name: "Rolling 5h", key: "rolling" },
+          { name: "Weekly", key: "weekly" },
+          { name: "Monthly", key: "monthly" }
+        ];
+        const rank = { online: 0, warning: 1, exceeded: 2 };
+        // provider 级别 = 全部 key 最差（失败 key 按 exceeded 视觉计入）
+        let worst = "online";
+        let html = "";
+
+        keys.forEach(function (k) {
+          const keyId = esc(k.key_id || "***");
+          if (k.ok && k.windows) {
+            const windows = k.windows;
+            let keyWorst = "online";
+            let rowsHtml = "";
+
+            WIN_DEFS.forEach(function (def) {
+              const w = windows[def.key] || {};
+              const pct = clampPercent(w.percent);
+              const level = levelOf(pct, w.exceeded, w.status);
+              if (rank[level] > rank[keyWorst]) keyWorst = level;
+              if (rank[level] > rank[worst]) worst = level;
+
+              // reset_at 优先；缺失/不可解析时回退 reset_in_seconds；皆无显 "-"
+              let resetAt = "";
+              let resetSecs = "";
+              if (w.reset_at) {
+                const t = new Date(w.reset_at);
+                if (!isNaN(t.getTime())) resetAt = t.toISOString();
+              }
+              if (!resetAt && w.reset_in_seconds > 0) {
+                resetSecs = String(w.reset_in_seconds);
+              }
+              const resetAttr = resetAt
+                ? " data-reset-at=\"" + esc(resetAt) + "\""
+                : (resetSecs ? " data-reset-secs=\"" + esc(resetSecs) + "\"" : "");
+
+              const pctText = pct === null ? "-" : Math.round(pct) + "%";
+              const pctCls = level === "exceeded" ? " bad" : pct !== null && pct >= 80 ? " warn" : "";
+              const barCls = level === "exceeded" ? " danger" : level === "warning" ? " warning" : "";
+
+              rowsHtml += '<div class="oc-win-row">' +
+                '<span class="oc-win-name">' + def.name + '</span>' +
+                '<div class="progress-track oc-win-bar"><div class="progress-bar' + barCls + '" style="width:' + (pct === null ? 0 : pct) + '%"></div></div>' +
+                '<span class="oc-win-pct' + pctCls + '">' + pctText + '</span>' +
+                '<span class="oc-win-reset countdown-timer"' + resetAttr + '>-</span>' +
+                '</div>';
+            });
+
+            const chipText = keyWorst === "exceeded" ? "超限" : keyWorst === "warning" ? "紧张" : "正常";
+            html += '<div class="oc-key-group">' +
+              '<div class="oc-key-head"><span class="oc-key-id">' + keyId + '</span>' +
+              '<span class="oc-key-chip status-badge ' + keyWorst + '"><span class="status-dot"></span><span>' + chipText + '</span></span></div>' +
+              '<div class="oc-key-body">' + rowsHtml + '</div>' +
+              '</div>';
+          } else {
+            // 失败 key 无 windows 字段：只渲染 key 头 + 错误行
+            if (rank.exceeded > rank[worst]) worst = "exceeded";
+            const is401 = k.status_code === 401;
+            const label = is401 ? "凭据无效" : "查询错误";
+            const statusPart = k.status_code ? "上游 " + esc(String(k.status_code)) : "查询失败";
+            const errTail = k.error ? "：" + esc(k.error) : "";
+            const tip = is401 ? "，请检查该 key 或从配置中移除" : "";
+            html += '<div class="oc-key-group">' +
+              '<div class="oc-key-head"><span class="oc-key-id">' + keyId + '</span>' +
+              '<span class="oc-key-chip status-badge exceeded"><span class="status-dot"></span><span>' + label + '</span></span></div>' +
+              '<div class="oc-key-error">' + label + '（' + statusPart + '）' + errTail + tip + '</div>' +
+              '</div>';
+          }
+        });
+
+        return { html: html, worst: worst };
+      }
+
+      function renderAllTab() {
+        const cc = providerState.commandcode;
+        const oc = providerState.opencode;
+
+        // Command Code summary card
+        if (cc.err) {
+          allBadgeCommandcode.className = "status-badge exceeded";
+          allBadgeTextCommandcode.textContent = "查询错误";
+          allBodyCommandcode.innerHTML = '<div class="error-card-title">Command Code 查询失败</div><div class="error-card-msg">' + esc(cc.err) + '</div>';
+        } else if (cc.data) {
+          const data = cc.data;
+          const credits = data.credits || (data.data && data.data.credits) || {};
+          const limits = data.window_limits || (data.data && data.data.window_limits) || {};
+          const plan = data.plan || (data.data && data.data.plan);
+          const planName = plan ? (plan.name || (typeof plan === "string" ? plan : "Unknown")) : "-";
+          const windowsDef = [
+            { name: "Monthly", o: limits.monthly || {} },
+            { name: "5-Hour", o: limits.five_hour || {} },
+            { name: "Weekly", o: limits.weekly || {} }
+          ];
+          let worstName = "-";
+          let worstPct = null;
+          let worstLevel = "online";
+          windowsDef.forEach(function (d) {
+            const pct = clampPercent(d.o.percentage);
+            const level = levelOf(pct, d.o.exceeded, "");
+            if (worstPct === null || (pct !== null && pct > worstPct) || level === "exceeded") {
+              worstName = d.name;
+              worstPct = pct === null ? 0 : pct;
+              worstLevel = level;
+            }
+          });
+          allBadgeCommandcode.className = "status-badge " + badgeVisualClass(cc.level);
+          allBadgeTextCommandcode.textContent = BADGE_TEXT[cc.level] || "-";
+          // Plan + 三个限额窗口（百分比/进度条/重置时间），行结构与 OpenCode 卡片一致，
+          // 倒计时走 data-reset-at/data-reset-secs 属性，由 updateTimers() 统一刷新
+          const ccWins = [
+            { name: "Rolling 5h", o: limits.five_hour || {} },
+            { name: "Weekly", o: limits.weekly || {} },
+            { name: "Monthly", o: limits.monthly || {} }
+          ];
+          let ccRows = "";
+          ccWins.forEach(function (d) {
+            const w = d.o;
+            const pct = clampPercent(w.percentage);
+            const level = levelOf(pct, w.exceeded, "");
+            let resetAt = "";
+            let resetSecs = "";
+            if (w.reset_at) {
+              const t = new Date(w.reset_at);
+              if (!isNaN(t.getTime())) resetAt = t.toISOString();
+            }
+            if (!resetAt && w.reset_in_seconds > 0) {
+              resetSecs = String(w.reset_in_seconds);
+            }
+            const resetAttr = resetAt
+              ? " data-reset-at=\"" + esc(resetAt) + "\""
+              : (resetSecs ? " data-reset-secs=\"" + esc(resetSecs) + "\"" : "");
+            const pctText = pct === null ? "-" : Math.round(pct) + "%";
+            const pctCls = level === "exceeded" ? " bad" : pct !== null && pct >= 80 ? " warn" : "";
+            const barCls = level === "exceeded" ? " danger" : level === "warning" ? " warning" : "";
+            ccRows += '<div class="oc-win-row">' +
+              '<span class="oc-win-name">' + d.name + '</span>' +
+              '<div class="progress-track oc-win-bar"><div class="progress-bar' + barCls + '" style="width:' + (pct === null ? 0 : pct) + '%"></div></div>' +
+              '<span class="oc-win-pct' + pctCls + '">' + pctText + '</span>' +
+              '<span class="oc-win-reset countdown-timer"' + resetAttr + '>-</span>' +
+              '</div>';
+          });
+          allBodyCommandcode.innerHTML =
+            summaryRow("Plan", esc(planName)) +
+            '<div class="oc-key-body">' + ccRows + '</div>';
+        } else {
+          allBadgeCommandcode.className = "status-badge";
+          allBadgeTextCommandcode.textContent = "尚未加载";
+          allBodyCommandcode.innerHTML = '<div class="all-summary-value">尚未加载</div>';
+        }
+
+        // OpenCode Go summary card
+        if (oc.err) {
+          allBadgeOpencode.className = "status-badge exceeded";
+          allBadgeTextOpencode.textContent = "查询错误";
+          allBodyOpencode.innerHTML = '<div class="error-card-title">OpenCode Go 查询失败</div><div class="error-card-msg">' + esc(oc.err) + '</div>';
+        } else if (oc.data) {
+          const data = oc.data;
+          // 多 key 契约：逐 key 完整卡片，与 OpenCode tab 共用同一渲染函数
+          const keys = Array.isArray(data.keys) ? data.keys : [];
+          const rendered = renderOpenCodeKeyGroups(keys);
+          const html = rendered.html || '<div class="all-summary-value">无 key 数据</div>';
+          allBadgeOpencode.className = "status-badge " + badgeVisualClass(oc.level);
+          allBadgeTextOpencode.textContent = BADGE_TEXT[oc.level] || "-";
+          allBodyOpencode.innerHTML = html;
+        } else {
+          allBadgeOpencode.className = "status-badge";
+          allBadgeTextOpencode.textContent = "尚未加载";
+          allBodyOpencode.innerHTML = '<div class="all-summary-value">尚未加载</div>';
+        }
+      }
+
+      function setActiveTab(tab, updateHash) {
+        activeTab = tab;
+        const tabBtns = document.querySelectorAll(".tab-btn");
+        for (let i = 0; i < tabBtns.length; i++) {
+          tabBtns[i].classList.toggle("active", tabBtns[i].getAttribute("data-tab") === tab);
+        }
+        document.getElementById("sectionCommandcode").classList.toggle("active", tab === "commandcode");
+        document.getElementById("sectionOpencode").classList.toggle("active", tab === "opencode");
+        document.getElementById("sectionAll").classList.toggle("active", tab === "all");
+        if (updateHash) {
+          if (tab === "all") {
+            // All 为默认 tab：激活 All 时清掉 hash（刷新回到默认）
+            history.replaceState(null, "", location.pathname + location.search);
+          } else {
+            location.hash = tab;
+          }
+        }
+      }
 
       async function fetchUsage() {
         refreshIcon.classList.add("spin");
@@ -1079,52 +1716,82 @@ const QuotaPageHTML = `<!DOCTYPE html>
 
         const mgmtKey = getStoredManagementKey();
         const overrideToken = inputSessionToken.value.trim();
+        const overrideOpenCodeKeys = inputOpenCodeKeys.value.split("\n").map(function (s) { return s.trim(); }).filter(Boolean);
 
         const headers = {
-          "Accept": "application/json"
+          "Accept": "application/json",
+          "Content-Type": "application/json"
         };
         if (mgmtKey) {
           headers["Authorization"] = "Bearer " + mgmtKey;
           headers["X-Management-Key"] = mgmtKey;
         }
 
-        let method = "GET";
-        let body = null;
+        // 整页只发一次 /all 请求，一次拿两个 provider；
+        // 覆盖凭据仅在填写时才进 body，不持久化
+        const bodyObj = {};
         if (overrideToken) {
-          method = "POST";
-          headers["Content-Type"] = "application/json";
-          body = JSON.stringify({ session_token: overrideToken });
+          bodyObj.session_token = overrideToken;
+        }
+        // 非空才进 body：list 优先（后端仍接受旧 scalar 字段，前端不再发送）
+        if (overrideOpenCodeKeys.length > 0) {
+          bodyObj.opencode_api_keys = overrideOpenCodeKeys;
         }
 
         try {
-          const res = await fetch(USAGE_ENDPOINT, {
-            method: method,
+          const res = await fetch(ALL_ENDPOINT, {
+            method: "POST",
             headers: headers,
-            body: body
+            body: JSON.stringify(bodyObj)
           });
 
           if (res.status === 401 || res.status === 403) {
             settingsDrawer.classList.add("open");
             showAlert("需要 CLIProxyAPI 管理密钥 (401/403)。请在上方输入框填入 Management Key 并保存。", true);
-            statusBadge.className = "status-badge warning";
-            statusText.textContent = "未授权";
             return;
           }
 
           const json = await res.json();
-          if (!res.ok || json.ok === false) {
-            const msg = json.error || (json.message ? json.message : "获取配额失败 (HTTP " + res.status + ")");
+          if (!res.ok) {
+            const msg = (json && (json.error || json.message)) || "获取配额失败 (HTTP " + res.status + ")";
+            showProviderError("commandcode", msg);
+            showProviderError("opencode", msg);
             showAlert(msg);
-            statusBadge.className = "status-badge exceeded";
-            statusText.textContent = "查询错误";
             return;
           }
 
-          renderUsage(json);
+          // 部分失败不阻塞：缺失/失败 provider 在各自 tab 内渲染错误卡片
+          let anyOk = false;
+          if (json.commandcode && json.commandcode.ok !== false) {
+            renderUsage(json.commandcode);
+            anyOk = true;
+          } else {
+            showProviderError("commandcode", (json.errors && json.errors.commandcode) || "Command Code 查询失败");
+          }
+          if (json.opencode && json.opencode.ok !== false) {
+            renderOpencode(json.opencode);
+            anyOk = true;
+          } else {
+            showProviderError("opencode", (json.errors && json.errors.opencode) || "OpenCode Go 查询失败");
+          }
+
+          if (anyOk) {
+            hideAlert();
+          } else {
+            showAlert("所有数据源查询失败，请检查配置或凭据。");
+          }
+
+          const updatedStr = json.updated_at ||
+            (json.commandcode && json.commandcode.updated_at) ||
+            (json.opencode && json.opencode.updated_at);
+          lastUpdated.textContent = updatedStr ? new Date(updatedStr).toLocaleString() : new Date().toLocaleString();
+
+          renderAllTab();
+          updateTimers();
         } catch (err) {
+          showProviderError("commandcode", "网络或同源请求错误: " + err.message);
+          showProviderError("opencode", "网络或同源请求错误: " + err.message);
           showAlert("网络或同源请求错误: " + err.message);
-          statusBadge.className = "status-badge exceeded";
-          statusText.textContent = "连接失败";
         } finally {
           refreshIcon.classList.remove("spin");
           btnRefresh.disabled = false;
@@ -1150,6 +1817,13 @@ const QuotaPageHTML = `<!DOCTYPE html>
         fetchUsage();
       });
 
+      // Tab switching + hash persistence (#opencode / #all)
+      document.querySelectorAll(".tab-btn").forEach((btn) => {
+        btn.addEventListener("click", () => {
+          setActiveTab(btn.getAttribute("data-tab"), true);
+        });
+      });
+
       // Init on load
       const initKey = localStorage.getItem("management_key") || localStorage.getItem("cpa_management_key");
       if (initKey) {
@@ -1225,6 +1899,15 @@ const QuotaPageHTML = `<!DOCTYPE html>
         timerInterval = setInterval(updateTimers, 1000);
       }
 
+      // Restore tab from location.hash, then initial fetch
+      // 无 hash 默认 All：All tab 才能通过刷新后的 #all hash 恢复
+      const initHash = location.hash.replace(/^#/, "");
+      if (initHash === "opencode" || initHash === "commandcode") {
+        setActiveTab(initHash, false);
+      } else {
+        setActiveTab("all", false);
+      }
+
       // Initial fetch
       fetchUsage();
     })();

plugin/types.go

@@ -248,3 +248,85 @@ type FormattedUsageResponse struct {
 	UpdatedAt    string                `json:"updated_at"`
 	Error        string                `json:"error,omitempty"`
 }
+
+// OpenCodeUsageResponse reflects GET {opencode_api_base}/usage from OpenCode Go.
+type OpenCodeUsageResponse struct {
+	Usage OpenCodeUsageWindows `json:"usage"`
+}
+
+// OpenCodeUsageWindows carries the three usage windows returned by OpenCode Go.
+type OpenCodeUsageWindows struct {
+	Rolling OpenCodeUsageWindow `json:"rolling"`
+	Weekly  OpenCodeUsageWindow `json:"weekly"`
+	Monthly OpenCodeUsageWindow `json:"monthly"`
+}
+
+// OpenCodeUsageWindow represents one quota window from OpenCode Go.
+// Percent is int in the observed upstream payload but parsed as float64 for tolerance.
+type OpenCodeUsageWindow struct {
+	Status   string  `json:"status"`
+	Percent  float64 `json:"percent"`
+	ResetsAt string  `json:"resetsAt"` // RFC3339 UTC
+}
+
+// OpenCodeFormattedWindows is the formatted OpenCode Go window section.
+type OpenCodeFormattedWindows struct {
+	Rolling OpenCodeFormattedWindow `json:"rolling"`
+	Weekly  OpenCodeFormattedWindow `json:"weekly"`
+	Monthly OpenCodeFormattedWindow `json:"monthly"`
+}
+
+// OpenCodeFormattedWindow is one formatted OpenCode Go window.
+type OpenCodeFormattedWindow struct {
+	Status         string  `json:"status"`
+	Percent        float64 `json:"percent"`
+	Exceeded       bool    `json:"exceeded"`
+	ResetAt        string  `json:"reset_at"`
+	ResetInSeconds int64   `json:"reset_in_seconds"`
+}
+
+// OpenCodeFormattedUsageResponse is the formatted OpenCode Go usage payload.
+type OpenCodeFormattedUsageResponse struct {
+	OK        bool                     `json:"ok"`
+	Provider  string                   `json:"provider"` // "opencode_go"
+	Windows   OpenCodeFormattedWindows `json:"windows"`
+	UpdatedAt string                   `json:"updated_at"`
+	Error     string                   `json:"error,omitempty"`
+}
+
+// OpenCodeKeyResult is the per-key outcome of a multi-key OpenCode Go query
+// (v0.4.0). Windows is a pointer so failed keys omit the field entirely
+// instead of marshaling a zero-value struct with "status":"" noise.
+type OpenCodeKeyResult struct {
+	KeyID      string                    `json:"key_id"`
+	OK         bool                      `json:"ok"`
+	Windows    *OpenCodeFormattedWindows `json:"windows,omitempty"`
+	StatusCode int                       `json:"status_code"`
+	Error      string                    `json:"error,omitempty"`
+	UpdatedAt  string                    `json:"updated_at,omitempty"`
+}
+
+// OpenCodeMultiKeyResponse is the multi-key OpenCode Go usage payload returned
+// by /plugins/commandcode/opencode/usage and the opencode field of /all.
+// Top-level Error is non-empty only when no key is configured at all.
+type OpenCodeMultiKeyResponse struct {
+	OK        bool                `json:"ok"`
+	Provider  string              `json:"provider"` // "opencode_go"
+	Keys      []OpenCodeKeyResult `json:"keys"`
+	UpdatedAt string              `json:"updated_at"`
+	Error     string              `json:"error,omitempty"`
+}
+
+// AllUsageResponse aggregates both providers for /plugins/commandcode/all.
+// Partial failure semantics: each provider's payload is present only on success;
+// failures are reported in Errors. CommandCode carries the raw JSON of
+// FormattedUsageResponse; OpenCode carries the raw JSON of
+// OpenCodeMultiKeyResponse (v0.4.0 breaking change: no longer the single-key
+// OpenCodeFormattedUsageResponse).
+type AllUsageResponse struct {
+	OK          bool              `json:"ok"` // at least one provider succeeded
+	CommandCode json.RawMessage   `json:"commandcode,omitempty"`
+	OpenCode    json.RawMessage   `json:"opencode,omitempty"`
+	Errors      map[string]string `json:"errors,omitempty"`
+	UpdatedAt   string            `json:"updated_at"`
+}

plugin/usage.go

@@ -15,6 +15,7 @@ import (
 
 const (
 	DefaultAPIBase         = "https://api.commandcode.ai"
+	DefaultOpenCodeAPIBase = "https://opencode.ai/zen/go/v1"
 )
 
 // HTTPDoer abstracts HTTP requests for testing and fallback.
@@ -56,16 +57,24 @@ func fetchUpstream(ctx context.Context, apiBase, endpoint, sessionToken, hostCal
 	url := fmt.Sprintf("%s/%s", strings.TrimRight(apiBase, "/"), strings.TrimLeft(endpoint, "/"))
 	cookieValue := FormatSessionCookie(cleanToken)
 
-	// 1. Try host.http.do if hostCaller is configured
-	if hostCaller != nil {
-		reqPayload := HostHTTPRequest{
-			Method: http.MethodGet,
-			URL:    url,
-			Headers: map[string][]string{
+	headers := map[string][]string{
 		"Cookie":     {cookieValue},
 		"Accept":     {"application/json"},
 		"User-Agent": {fmt.Sprintf("cliproxy-plugin-commandcode/%s", PluginVersion)},
-			},
+	}
+	return doUpstreamRequest(ctx, http.MethodGet, url, headers, hostCallbackID)
+}
+
+// doUpstreamRequest is the shared transport layer: it tries the host.http.do
+// bridge first (when a host caller is registered) and falls back to net/http.
+// Request semantics (method, URL, headers) are fully controlled by the caller.
+func doUpstreamRequest(ctx context.Context, method, url string, headers map[string][]string, hostCallbackID string) ([]byte, int, error) {
+	// 1. Try host.http.do if hostCaller is configured
+	if hostCaller != nil {
+		reqPayload := HostHTTPRequest{
+			Method:         method,
+			URL:            url,
+			Headers:        headers,
 			HostCallbackID: hostCallbackID,
 		}
 		rawReq, errMarshal := json.Marshal(reqPayload)
@@ -97,13 +106,15 @@ func fetchUpstream(ctx context.Context, apiBase, endpoint, sessionToken, hostCal
 	}
 
 	// 2. Fallback to Go net/http client
-	httpReq, errNew := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	httpReq, errNew := http.NewRequestWithContext(ctx, method, url, nil)
 	if errNew != nil {
 		return nil, http.StatusInternalServerError, fmt.Errorf("create HTTP request: %w", errNew)
 	}
-	httpReq.Header.Set("Cookie", cookieValue)
-	httpReq.Header.Set("Accept", "application/json")
-	httpReq.Header.Set("User-Agent", fmt.Sprintf("cliproxy-plugin-commandcode/%s", PluginVersion))
+	for key, values := range headers {
+		for _, value := range values {
+			httpReq.Header.Add(key, value)
+		}
+	}
 
 	res, errDo := defaultHTTPClient.Do(httpReq)
 	if errDo != nil {
@@ -131,6 +142,113 @@ func FetchUsageSummaryRaw(ctx context.Context, apiBase, sessionToken string, hos
 	return fetchUpstream(ctx, apiBase, "internal/usage/summary", sessionToken, hostCallbackID)
 }
 
+// FetchOpenCodeUsageRaw fetches raw OpenCode Go usage data from
+// {apiBase}/usage with Bearer auth, via host.http.do or net/http fallback.
+func FetchOpenCodeUsageRaw(ctx context.Context, apiBase, apiKey, hostCallbackID string) ([]byte, int, error) {
+	apiKey = strings.TrimSpace(apiKey)
+	if apiKey == "" {
+		return nil, http.StatusBadRequest, errors.New("missing opencode_api_key: configure opencode_api_key in plugin config or pass it in the request")
+	}
+
+	if apiBase == "" {
+		apiBase = DefaultOpenCodeAPIBase
+	}
+	url := strings.TrimRight(apiBase, "/") + "/usage"
+
+	headers := map[string][]string{
+		"Authorization": {"Bearer " + apiKey},
+		"Accept":        {"application/json"},
+		"User-Agent":    {fmt.Sprintf("cliproxy-plugin-commandcode/%s", PluginVersion)},
+	}
+	return doUpstreamRequest(ctx, http.MethodGet, url, headers, hostCallbackID)
+}
+
+// ParseOpenCodeUsage parses OpenCode Go usage JSON into the formatted response.
+// Unknown status values are tolerated; a resetsAt that fails to parse is not
+// fatal (ResetAt stays empty and ResetInSeconds stays 0).
+func ParseOpenCodeUsage(raw []byte, now time.Time) (*OpenCodeFormattedUsageResponse, error) {
+	if len(raw) == 0 {
+		return nil, errors.New("empty response body from upstream")
+	}
+
+	var upstream OpenCodeUsageResponse
+	if err := json.Unmarshal(raw, &upstream); err != nil {
+		return nil, fmt.Errorf("unmarshal opencode usage response: %w", err)
+	}
+
+	if now.IsZero() {
+		now = time.Now().UTC()
+	}
+
+	return &OpenCodeFormattedUsageResponse{
+		OK:       true,
+		Provider: "opencode_go",
+		Windows: OpenCodeFormattedWindows{
+			Rolling: formatOpenCodeWindow(upstream.Usage.Rolling, now),
+			Weekly:  formatOpenCodeWindow(upstream.Usage.Weekly, now),
+			Monthly: formatOpenCodeWindow(upstream.Usage.Monthly, now),
+		},
+		UpdatedAt: now.Format(time.RFC3339),
+	}, nil
+}
+
+// formatOpenCodeWindow formats a single OpenCode Go usage window.
+func formatOpenCodeWindow(w OpenCodeUsageWindow, now time.Time) OpenCodeFormattedWindow {
+	percent := clampOpenCodePercent(w.Percent)
+	out := OpenCodeFormattedWindow{
+		Status:   w.Status,
+		Percent:  percent,
+		Exceeded: percent >= 100 || w.Status == "exceeded",
+	}
+
+	if w.ResetsAt != "" {
+		if t, err := time.Parse(time.RFC3339, w.ResetsAt); err == nil {
+			out.ResetAt = t.UTC().Format(time.RFC3339)
+			if diff := t.UTC().Sub(now); diff > 0 {
+				out.ResetInSeconds = int64(diff.Seconds())
+			}
+		}
+		// Parse failure is not fatal: ResetAt stays empty, ResetInSeconds stays 0.
+	}
+	return out
+}
+
+// clampOpenCodePercent clamps a percentage to [0, 100] with 2-decimal rounding.
+func clampOpenCodePercent(p float64) float64 {
+	if p < 0 {
+		p = 0
+	}
+	if p > 100 {
+		p = 100
+	}
+	return math.Round(p*100) / 100
+}
+
+// MaskAPIKey masks an OpenCode Go API key for display: first 4 + "…" + last 4
+// characters (e.g. "sk-L…KqYB"). Keys shorter than 8 characters are fully
+// masked as "***"; an empty key masks to "".
+func MaskAPIKey(key string) string {
+	if key == "" {
+		return ""
+	}
+	if len(key) < 8 {
+		return "***"
+	}
+	return key[:4] + "…" + key[len(key)-4:]
+}
+
+// QueryOpenCodeKeys queries OpenCode Go usage for each key sequentially and
+// returns one typed result per key, in input order. A single key's failure is
+// recorded only in that key's result and never aborts the loop.
+func QueryOpenCodeKeys(ctx context.Context, apiBase string, keys []string, hostCallbackID string) []OpenCodeKeyResult {
+	results := make([]OpenCodeKeyResult, 0, len(keys))
+	for _, key := range keys {
+		res, _ := queryOpenCodeKey(ctx, apiBase, key, hostCallbackID)
+		results = append(results, res)
+	}
+	return results
+}
+
 // ParseAndFormatUsage parses upstream credits JSON into structured usage metrics.
 // summary (optional) carries the billing-period usage totals used to derive the monthly window.
 func ParseAndFormatUsage(raw []byte, summary *UpstreamUsageSummaryResponse, now time.Time) (*FormattedUsageResponse, error) {

plugin/usage_test.go

@@ -6,6 +6,7 @@ import (
 	"math"
 	"net/http"
 	"net/http/httptest"
+	"strings"
 	"testing"
 	"time"
 )
@@ -376,3 +377,416 @@ func TestPlanFromWindowLimits(t *testing.T) {
 		})
 	}
 }
+
+func TestParseOpenCodeUsage(t *testing.T) {
+	now := time.Date(2026, 9, 16, 12, 0, 0, 0, time.UTC)
+
+	t.Run("normal payload from real upstream shape", func(t *testing.T) {
+		raw := []byte(`{"usage":{
+			"rolling": {"status":"ok","percent":4, "resetsAt":"2026-09-17T06:58:53.171Z"},
+			"weekly":  {"status":"ok","percent":46,"resetsAt":"2026-09-21T00:00:00.000Z"},
+			"monthly": {"status":"ok","percent":23,"resetsAt":"2026-10-14T09:13:49.000Z"}
+		}}`)
+
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage error: %v", err)
+		}
+		if !usage.OK || usage.Provider != "opencode_go" {
+			t.Fatalf("unexpected header: ok=%v provider=%q", usage.OK, usage.Provider)
+		}
+		if usage.UpdatedAt != "2026-09-16T12:00:00Z" {
+			t.Errorf("UpdatedAt = %q", usage.UpdatedAt)
+		}
+
+		rolling := usage.Windows.Rolling
+		if rolling.Percent != 4 || rolling.Status != "ok" || rolling.Exceeded {
+			t.Errorf("rolling = %+v", rolling)
+		}
+		if rolling.ResetAt != "2026-09-17T06:58:53Z" {
+			t.Errorf("rolling reset_at = %q", rolling.ResetAt)
+		}
+		if rolling.ResetInSeconds != 68333 {
+			t.Errorf("rolling reset_in_seconds = %d, want 68333", rolling.ResetInSeconds)
+		}
+
+		weekly := usage.Windows.Weekly
+		if weekly.Percent != 46 {
+			t.Errorf("weekly percent = %v, want 46", weekly.Percent)
+		}
+		if weekly.ResetAt != "2026-09-21T00:00:00Z" {
+			t.Errorf("weekly reset_at = %q, want 2026-09-21T00:00:00Z (.000Z tolerated)", weekly.ResetAt)
+		}
+
+		monthly := usage.Windows.Monthly
+		if monthly.Percent != 23 {
+			t.Errorf("monthly percent = %v, want 23", monthly.Percent)
+		}
+	})
+
+	t.Run("float percent", func(t *testing.T) {
+		raw := []byte(`{"usage":{"rolling":{"status":"ok","percent":12.345,"resetsAt":"2026-09-17T06:58:53Z"}}}`)
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage error: %v", err)
+		}
+		if got := usage.Windows.Rolling.Percent; got != 12.35 { // Round(x*100)/100
+			t.Errorf("percent = %v, want 12.35", got)
+		}
+	})
+
+	t.Run("unknown status tolerated", func(t *testing.T) {
+		raw := []byte(`{"usage":{"rolling":{"status":"weird-status","percent":50,"resetsAt":"2026-09-17T06:58:53Z"}}}`)
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage error: %v", err)
+		}
+		if got := usage.Windows.Rolling; got.Status != "weird-status" || got.Exceeded {
+			t.Errorf("rolling = %+v, want status kept and not exceeded", got)
+		}
+	})
+
+	t.Run("exceeded status", func(t *testing.T) {
+		raw := []byte(`{"usage":{"rolling":{"status":"exceeded","percent":99,"resetsAt":"2026-09-17T06:58:53Z"}}}`)
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage error: %v", err)
+		}
+		if !usage.Windows.Rolling.Exceeded {
+			t.Error("expected Exceeded=true for status=exceeded")
+		}
+	})
+
+	t.Run("percent 100 exceeded", func(t *testing.T) {
+		raw := []byte(`{"usage":{"rolling":{"status":"ok","percent":100,"resetsAt":""}}}`)
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage error: %v", err)
+		}
+		if !usage.Windows.Rolling.Exceeded {
+			t.Error("expected Exceeded=true for percent=100")
+		}
+		if usage.Windows.Rolling.ResetAt != "" || usage.Windows.Rolling.ResetInSeconds != 0 {
+			t.Errorf("expected empty reset fields, got %+v", usage.Windows.Rolling)
+		}
+	})
+
+	t.Run("percent above 100 clamped", func(t *testing.T) {
+		raw := []byte(`{"usage":{"rolling":{"status":"ok","percent":150.5,"resetsAt":""}}}`)
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage error: %v", err)
+		}
+		if got := usage.Windows.Rolling.Percent; got != 100 {
+			t.Errorf("percent = %v, want 100 (clamped)", got)
+		}
+		if !usage.Windows.Rolling.Exceeded {
+			t.Error("expected Exceeded=true when clamped to 100")
+		}
+	})
+
+	t.Run("malformed resetsAt not fatal", func(t *testing.T) {
+		raw := []byte(`{"usage":{"rolling":{"status":"ok","percent":5,"resetsAt":"not-a-timestamp"}}}`)
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage must not fail on bad resetsAt: %v", err)
+		}
+		if got := usage.Windows.Rolling; got.ResetAt != "" || got.ResetInSeconds != 0 {
+			t.Errorf("expected zero reset fields on parse failure, got %+v", got)
+		}
+	})
+
+	t.Run("missing windows tolerated as zero values", func(t *testing.T) {
+		raw := []byte(`{"usage":{}}`)
+		usage, err := ParseOpenCodeUsage(raw, now)
+		if err != nil {
+			t.Fatalf("ParseOpenCodeUsage error: %v", err)
+		}
+		if usage.Windows.Rolling.Percent != 0 {
+			t.Errorf("rolling percent = %v, want 0", usage.Windows.Rolling.Percent)
+		}
+	})
+
+	t.Run("empty body", func(t *testing.T) {
+		if _, err := ParseOpenCodeUsage(nil, now); err == nil {
+			t.Fatal("expected error for empty body")
+		}
+	})
+
+	t.Run("invalid JSON", func(t *testing.T) {
+		if _, err := ParseOpenCodeUsage([]byte(`not-json`), now); err == nil {
+			t.Fatal("expected error for invalid JSON")
+		}
+	})
+}
+
+func TestFetchOpenCodeUsageRaw_FallbackHTTP(t *testing.T) {
+	var sawAuth, sawUA, sawAccept string
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/usage" {
+			t.Errorf("unexpected path: %s", r.URL.Path)
+			http.NotFound(w, r)
+			return
+		}
+		sawAuth = r.Header.Get("Authorization")
+		sawUA = r.Header.Get("User-Agent")
+		sawAccept = r.Header.Get("Accept")
+
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"usage":{"rolling":{"status":"ok","percent":4,"resetsAt":"2026-09-17T06:58:53.171Z"}}}`))
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	body, status, err := FetchOpenCodeUsageRaw(context.Background(), ts.URL, "sk-test-key", "")
+	if err != nil {
+		t.Fatalf("FetchOpenCodeUsageRaw error: %v", err)
+	}
+	if status != http.StatusOK {
+		t.Errorf("status = %d, want 200", status)
+	}
+	if len(body) == 0 {
+		t.Fatal("expected non-empty body")
+	}
+	if sawAuth != "Bearer sk-test-key" {
+		t.Errorf("Authorization = %q, want Bearer sk-test-key", sawAuth)
+	}
+	if sawAccept != "application/json" {
+		t.Errorf("Accept = %q, want application/json", sawAccept)
+	}
+	if !strings.Contains(sawUA, "cliproxy-plugin-commandcode/") {
+		t.Errorf("User-Agent = %q, want cliproxy-plugin-commandcode/<version>", sawUA)
+	}
+
+	usage, errParse := ParseOpenCodeUsage(body, time.Time{})
+	if errParse != nil {
+		t.Fatalf("ParseOpenCodeUsage error: %v", errParse)
+	}
+	if usage.Windows.Rolling.Percent != 4 {
+		t.Errorf("rolling percent = %v, want 4", usage.Windows.Rolling.Percent)
+	}
+}
+
+func TestFetchOpenCodeUsageRaw_BaseTrailingSlash(t *testing.T) {
+	requests := 0
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		requests++
+		if r.URL.Path != "/usage" {
+			t.Errorf("path = %q, want /usage (trailing slash trimmed)", r.URL.Path)
+		}
+		_, _ = w.Write([]byte(`{"usage":{"rolling":{"status":"ok","percent":1,"resetsAt":""}}}`))
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	if _, _, err := FetchOpenCodeUsageRaw(context.Background(), ts.URL+"/", "sk-key", ""); err != nil {
+		t.Fatalf("error: %v", err)
+	}
+	if requests != 1 {
+		t.Fatalf("requests = %d, want 1", requests)
+	}
+}
+
+func TestFetchOpenCodeUsageRaw_MissingKey(t *testing.T) {
+	_, status, err := FetchOpenCodeUsageRaw(context.Background(), "", "", "")
+	if err == nil {
+		t.Fatal("expected error for missing key")
+	}
+	if status != http.StatusBadRequest {
+		t.Errorf("status = %d, want 400", status)
+	}
+}
+
+func TestFetchOpenCodeUsageRaw_EmptyKeyAfterTrim(t *testing.T) {
+	_, status, err := FetchOpenCodeUsageRaw(context.Background(), "", "   ", "")
+	if err == nil {
+		t.Fatal("expected error for whitespace-only key")
+	}
+	if status != http.StatusBadRequest {
+		t.Errorf("status = %d, want 400", status)
+	}
+}
+
+func TestFetchOpenCodeUsageRaw_UpstreamNon200(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusUnauthorized)
+		_, _ = w.Write([]byte(`{"error":"invalid api key"}`))
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	body, status, err := FetchOpenCodeUsageRaw(context.Background(), ts.URL, "sk-bad", "")
+	if err != nil {
+		t.Fatalf("expected nil transport error for non-200 upstream, got %v", err)
+	}
+	if status != http.StatusUnauthorized {
+		t.Errorf("status = %d, want 401", status)
+	}
+	if string(body) != `{"error":"invalid api key"}` {
+		t.Errorf("body = %q", string(body))
+	}
+}
+
+func TestMaskAPIKey(t *testing.T) {
+	tests := []struct {
+		name string
+		key  string
+		want string
+	}{
+		{"empty", "", ""},
+		{"normal key", "sk-LongExampleKqYB", "sk-L…KqYB"},
+		{"exactly 8 chars", "12345678", "1234…5678"},
+		{"7 chars fully masked", "1234567", "***"},
+		{"1 char", "x", "***"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := MaskAPIKey(tt.key); got != tt.want {
+				t.Errorf("MaskAPIKey(%q) = %q, want %q", tt.key, got, tt.want)
+			}
+		})
+	}
+}
+
+// Double-key isolation: one key succeeds, the other gets a 401 — the failure
+// must be contained in its own result, must not abort the loop, and the raw
+// key must never appear in any result field.
+func TestQueryOpenCodeKeys_IsolationAndOrder(t *testing.T) {
+	var authOrder []string
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		authOrder = append(authOrder, r.Header.Get("Authorization"))
+		switch r.Header.Get("Authorization") {
+		case "Bearer sk-good-AAAA":
+			w.Header().Set("Content-Type", "application/json")
+			_, _ = w.Write([]byte(mockOpencodeUsageJSON))
+		default:
+			w.WriteHeader(http.StatusUnauthorized)
+			_, _ = w.Write([]byte(`{"error":"invalid api key"}`))
+		}
+	}))
+	defer ts.Close()
+
+	SetHostCaller(nil)
+	SetDefaultHTTPClient(ts.Client())
+	defer func() {
+		SetDefaultHTTPClient(&http.Client{Timeout: 15 * time.Second})
+	}()
+
+	keys := []string{"sk-good-AAAA", "sk-bad-BBBB"}
+	results := QueryOpenCodeKeys(context.Background(), ts.URL, keys, "")
+
+	if len(results) != 2 {
+		t.Fatalf("len(results) = %d, want 2", len(results))
+	}
+
+	// Order preserved: requests issued in input order.
+	if len(authOrder) != 2 || authOrder[0] != "Bearer sk-good-AAAA" || authOrder[1] != "Bearer sk-bad-BBBB" {
+		t.Errorf("request order = %v, want sequential input order", authOrder)
+	}
+
+	ok := results[0]
+	if !ok.OK || ok.StatusCode != http.StatusOK {
+		t.Errorf("results[0] = %+v, want OK=true status=200", ok)
+	}
+	if ok.Windows == nil {
+		t.Fatal("results[0].Windows = nil, want non-nil on success")
+	}
+	if ok.Windows.Rolling.Percent != 4 || ok.Windows.Weekly.Percent != 46 || ok.Windows.Monthly.Percent != 23 {
+		t.Errorf("results[0] percents = %v/%v/%v, want 4/46/23",
+			ok.Windows.Rolling.Percent, ok.Windows.Weekly.Percent, ok.Windows.Monthly.Percent)
+	}
+	if ok.KeyID != MaskAPIKey("sk-good-AAAA") {
+		t.Errorf("results[0].KeyID = %q, want masked id %q", ok.KeyID, MaskAPIKey("sk-good-AAAA"))
+	}
+
+	bad := results[1]
+	if bad.OK {
+		t.Errorf("results[1].OK = true, want false (401 must not abort the loop)")
+	}
+	if bad.Windows != nil {
+		t.Errorf("results[1].Windows = %+v, want nil on failure", bad.Windows)
+	}
+	if bad.StatusCode != http.StatusUnauthorized {
+		t.Errorf("results[1].StatusCode = %d, want 401", bad.StatusCode)
+	}
+	if !strings.Contains(bad.Error, "opencode upstream returned 401") {
+		t.Errorf("results[1].Error = %q, want it to mention the upstream 401", bad.Error)
+	}
+
+	// Raw keys must never leak into any serialized result field.
+	raw, _ := json.Marshal(results)
+	if strings.Contains(string(raw), "sk-good-AAAA") || strings.Contains(string(raw), "sk-bad-BBBB") {
+		t.Errorf("serialized results leak a raw key: %s", string(raw))
+	}
+}
+
+func TestQueryOpenCodeKeys_EmptyKeyInList(t *testing.T) {
+	SetHostCaller(nil)
+	results := QueryOpenCodeKeys(context.Background(), "", []string{""}, "")
+	if len(results) != 1 {
+		t.Fatalf("len(results) = %d, want 1", len(results))
+	}
+	if results[0].OK || results[0].StatusCode != http.StatusBadRequest {
+		t.Errorf("results[0] = %+v, want local 400 result", results[0])
+	}
+}
+
+func TestFetchOpenCodeUsageRaw_HostCaller(t *testing.T) {
+	mockResponsePayload := []byte(`{"usage":{"rolling":{"status":"ok","percent":7,"resetsAt":"2026-09-17T06:58:53Z"}}}`)
+
+	var sawMethod, sawURL string
+	var sawHeaders map[string][]string
+	SetHostCaller(func(method string, payload []byte) ([]byte, error) {
+		if method != "host.http.do" {
+			t.Errorf("method = %s, want host.http.do", method)
+		}
+		var req HostHTTPRequest
+		if err := json.Unmarshal(payload, &req); err != nil {
+			t.Fatalf("unmarshal HostHTTPRequest error: %v", err)
+		}
+		sawMethod, sawURL, sawHeaders = req.Method, req.URL, req.Headers
+		hostResp := HostHTTPResponse{
+			StatusCode: http.StatusOK,
+			Body:       mockResponsePayload,
+		}
+		respJSON, _ := json.Marshal(hostResp)
+		return json.Marshal(Envelope{OK: true, Result: respJSON})
+	})
+	defer SetHostCaller(nil)
+
+	body, status, err := FetchOpenCodeUsageRaw(context.Background(), "https://opencode.example/v1", "sk-host-key", "cb-123")
+	if err != nil {
+		t.Fatalf("FetchOpenCodeUsageRaw with hostCaller error: %v", err)
+	}
+	if status != http.StatusOK {
+		t.Errorf("status = %d, want 200", status)
+	}
+	if string(body) != string(mockResponsePayload) {
+		t.Errorf("body = %s, want %s", string(body), string(mockResponsePayload))
+	}
+	if sawMethod != http.MethodGet {
+		t.Errorf("host request method = %s, want GET", sawMethod)
+	}
+	if sawURL != "https://opencode.example/v1/usage" {
+		t.Errorf("host request url = %s, want https://opencode.example/v1/usage", sawURL)
+	}
+	auth := sawHeaders["Authorization"]
+	if len(auth) == 0 || auth[0] != "Bearer sk-host-key" {
+		t.Errorf("host request Authorization = %v, want Bearer sk-host-key", auth)
+	}
+}

scripts/pagecheck.js

@@ -0,0 +1,217 @@
+// pagecheck: syntax-check the embedded quota page JS (guards against
+// parse-time SyntaxErrors like duplicate const that break the whole page).
+const fs = require("fs");
+const src = fs.readFileSync("plugin/quota_page.go", "utf8");
+const m = src.match(/const QuotaPageHTML = `([\s\S]*)`/);
+if (!m) {
+  console.error("pagecheck: QuotaPageHTML not found");
+  process.exit(1);
+}
+const js = [...m[1].matchAll(/<script>([\s\S]*?)<\/script>/g)]
+  .map((x) => x[1])
+  .join("\n");
+if (!js.trim()) {
+  console.error("pagecheck: no <script> content found");
+  process.exit(1);
+}
+try {
+  new Function(js);
+} catch (e) {
+  console.error("pagecheck: embedded JS SyntaxError:", e.message);
+  process.exit(1);
+}
+console.log("pagecheck: embedded JS syntax OK");
+
+// --- Undeclared-identifier audit (guards against ReferenceErrors like the
+// v0.4.4 `monthlyTargetTime is not defined` bug: a bare identifier read in
+// updateTimers() that was never declared and only existed as a global
+// property accidentally created by renderUsage()).
+//
+// Approach (deliberately simple/grep-style, no DOM execution):
+//   1. strip comments and string literals
+//   2. collect every var/let/const/function declaration name + function/
+//      callback/catch parameter
+//   3. flag candidates: bare assignment targets (x =, x +=, x++, ...),
+//      bare if()/while() condition identifiers, and for-loop init identifiers
+//   4. whitelist known globals; anything left is reported and fails the check
+
+const whitelist = new Set([
+  // browser builtins referenced by the page
+  "document", "window", "localStorage", "sessionStorage", "fetch",
+  "setInterval", "setTimeout", "clearInterval", "clearTimeout", "console",
+  "alert", "Date", "Math", "Number", "String", "Boolean", "Array",
+  "Object", "JSON", "parseInt", "parseFloat", "isNaN", "Promise", "Error",
+  "escape", "unescape", "navigator", "location", "history", "URL",
+  "URLSearchParams", "FormData", "Headers", "Request", "Response",
+  "Intl", "Map", "Set", "AbortController", "requestAnimationFrame",
+  "cancelAnimationFrame", "structuredClone", "globalThis", "arguments",
+]);
+
+function stripLiterals(source) {
+  // Remove comments, string literals, and regex literals; replace with
+  // harmless placeholders so identifier scanning never sees string content.
+  // Template literals are NOT fully discarded: their ${...} interpolations
+  // are kept as "( ... )" so identifiers inside them stay visible.
+  //
+  // A "/" only starts a regex literal when it appears in expression
+  // position (previous significant token is an operator/open bracket or a
+  // keyword such as return/typeof). Otherwise it is division.
+  let out = "";
+  let i = 0;
+  const n = source.length;
+  // Stack of lexer contexts. Each entry: { type: "expr", depth: number } or
+  // { type: "tmpl" }. The initial code runs in a never-ending expr context.
+  const stack = [{ type: "expr", depth: Infinity }];
+  // Last significant (non-whitespace) emitted char + last identifier word,
+  // used for the regex-vs-division heuristic.
+  let lastSig = "";
+  let lastWord = "";
+  const KEYWORDS_BEFORE_REGEX = new Set([
+    "return", "typeof", "instanceof", "in", "of", "new", "delete", "void",
+    "do", "else", "case", "throw", "await", "yield",
+  ]);
+  const emit = (text) => {
+    for (const ch of text) {
+      if (/\s/.test(ch)) continue;
+      if (/[A-Za-z0-9_$]/.test(ch)) {
+        lastWord = /[A-Za-z0-9_$]/.test(lastSig) ? lastWord + ch : ch;
+      } else {
+        lastWord = "";
+      }
+      lastSig = ch;
+    }
+    out += text;
+  };
+  const regexAllowed = () =>
+    lastSig === "" ||
+    "(,=:[!&|?+-*/%<>~^;{".includes(lastSig) ||
+    KEYWORDS_BEFORE_REGEX.has(lastWord);
+
+  while (i < n) {
+    const ctx = stack[stack.length - 1];
+    const c = source[i];
+    const next = source[i + 1];
+
+    if (ctx.type === "tmpl") {
+      // Inside template literal text: skip until ` or ${ ... }
+      if (c === "\\") { i += 2; continue; }
+      if (c === "`") { i++; stack.pop(); emit(" "); continue; }
+      if (c === "$" && next === "{") {
+        i += 2;
+        stack.push({ type: "expr", depth: 0 });
+        emit(" ( ");
+        continue;
+      }
+      i++;
+      continue;
+    }
+
+    // code context (top-level or template ${...} expression)
+    if (c === "/" && next === "/") {
+      while (i < n && source[i] !== "\n") i++;
+    } else if (c === "/" && next === "*") {
+      i += 2;
+      while (i < n && !(source[i] === "*" && source[i + 1] === "/")) i++;
+      i += 2;
+    } else if (c === "/" && regexAllowed()) {
+      // regex literal: skip to unescaped closing / (not inside [...])
+      i++;
+      let inClass = false;
+      while (i < n) {
+        if (source[i] === "\\") { i += 2; continue; }
+        if (source[i] === "[") { inClass = true; i++; continue; }
+        if (source[i] === "]") { inClass = false; i++; continue; }
+        if (source[i] === "/" && !inClass) { i++; break; }
+        if (source[i] === "\n") break; // malformed; bail out safely
+        i++;
+      }
+      while (i < n && /[a-z]/i.test(source[i])) i++; // flags
+      emit(" / ");
+    } else if (c === '"' || c === "'") {
+      const quote = c;
+      i++;
+      while (i < n) {
+        if (source[i] === "\\") { i += 2; continue; }
+        if (source[i] === quote) { i++; break; }
+        if (source[i] === "\n") break;
+        i++;
+      }
+      emit(" " + quote + quote + " ");
+    } else if (c === "`") {
+      i++;
+      stack.push({ type: "tmpl" });
+      emit(" ");
+    } else {
+      if (c === "{") ctx.depth++;
+      if (c === "}") {
+        if (ctx.depth === 0) {
+          // closes a template interpolation: back into template text
+          stack.pop();
+          i++;
+          emit(" ) ");
+          continue;
+        }
+        ctx.depth--;
+      }
+      emit(c);
+      i++;
+    }
+  }
+  return out;
+}
+
+function collectDeclarations(clean) {
+  const declared = new Set();
+  const addParamList = (raw) => {
+    for (const p of raw.split(",")) {
+      const name = p.trim().split(/[\s=]/)[0].replace(/^\.\.\./, "");
+      if (/^[A-Za-z_$][\w$]*$/.test(name)) declared.add(name);
+    }
+  };
+  for (const m of clean.matchAll(/\b(?:var|let|const)\s+([A-Za-z_$][\w$]*)/g))
+    declared.add(m[1]);
+  // function declarations/expressions: name + params
+  for (const m of clean.matchAll(/\bfunction\s*([A-Za-z_$][\w$]*)?\s*\(([^()]*)\)/g)) {
+    if (m[1]) declared.add(m[1]);
+    addParamList(m[2]);
+  }
+  // arrow functions: (a, b) => and a =>
+  for (const m of clean.matchAll(/\(\s*([^()]*?)\s*\)\s*=>/g)) addParamList(m[1]);
+  for (const m of clean.matchAll(/(?<![\w$.(])\b([A-Za-z_$][\w$]*)\s*=>/g)) declared.add(m[1]);
+  // catch (e) and destructuring catch
+  for (const m of clean.matchAll(/\bcatch\s*\(?\s*\{?\s*([A-Za-z_$][\w$]*)/g)) declared.add(m[1]);
+  return declared;
+}
+
+const clean = stripLiterals(js);
+const declared = collectDeclarations(clean);
+const flagged = new Set();
+
+// 1. bare assignment targets / updates:  x =, x +=, x++, x--, x ??=
+for (const m of clean.matchAll(/(?:^|[{};\n])\s*([A-Za-z_$][\w$]*)\s*(?:=[^=>]|[+*\/%-]?=[^=]|\+\+|\-\-)/gm)) {
+  const name = m[1];
+  if (!declared.has(name) && !whitelist.has(name)) flagged.add(name);
+}
+// 2. bare if()/while() condition identifiers
+for (const m of clean.matchAll(/\b(?:if|while)\s*\(\s*(!*)\s*([A-Za-z_$][\w$]*)\s*(?:\)|&&|\|\||\?)/g)) {
+  const name = m[2];
+  if (!declared.has(name) && !whitelist.has(name)) flagged.add(name);
+}
+// 3. for-loop init without let/var: for (i = 0; ...)
+for (const m of clean.matchAll(/\bfor\s*\(\s*([A-Za-z_$][\w$]*)\s*=[^=]/g)) {
+  const name = m[1];
+  if (!declared.has(name) && !whitelist.has(name)) flagged.add(name);
+}
+
+if (flagged.size > 0) {
+  console.error("pagecheck: undeclared identifier(s) referenced in embedded JS:");
+  for (const name of [...flagged].sort()) console.error("  - " + name);
+  console.error(
+    "pagecheck: fix by declaring with let/const (see v0.4.5 monthlyTargetTime bug); " +
+    "if this is a false positive, extend scripts/pagecheck.js"
+  );
+  process.exit(1);
+}
+console.log(
+  "pagecheck: undeclared-identifier scan OK (" + declared.size + " declarations checked)"
+);