chore(privacy): 文档与截图改用合成示例数据，移除真实 Prompt 与统计口径

原截图里含有不该公开的内容：
  * docs/images/02-records.png —— 真实 Prompt 全文、请求 ID、真实模型名
  * docs/images/05-logs.png    —— 本机路径与 Windows 用户名
  * docs/images/04-config.png  —— Cookie 尾串
  * 01/03/07/08                —— 真实用量分布与日期

做法：新增 tools/demo_data.py 生成完全合成的示例库（假模型名 demo-*、
通用 Prompt、偏斜的积分分布、RFC 5737 文档专用网段的审计 IP），
在容器里跑它并以 /app 路径截图，再按原规格（1400px + 调色板量化）替换。
同时把 docs/API.md 与 docs/DEPLOYMENT.md 示例响应里的真实模型名与真实
统计数字（1665 条 / 8513.36 积分等）换成示例口径。

顺带修正 .gitignore：只写 data/*.sqlite 会漏掉子目录，补 data/**/*.sqlite
等规则并忽略 data/demo/。

docs/API.md

@@ -47,16 +47,16 @@
   "producer": "workbuddy-portal（Flask + SQLite）",
   "note": "...",
   "totals": {
-    "records": 1665, "credits": 8513.36, "calls": 1086,
-    "freeCalls": 579, "billableCalls": 507,
-    "models": 12, "clients": 3,
-    "first": "2026-08-10 00:00:00", "last": "2026-09-14 14:51:00",
-    "topCredits": 319.5
+    "records": 944, "credits": 4961.63, "calls": 944,
+    "freeCalls": 328, "billableCalls": 616,
+    "models": 7, "clients": 3,
+    "first": "2026-08-16 09:12:00", "last": "2026-09-14 15:52:00",
+    "topCredits": 412.8
   },
   "months": ["2026-08", "2026-09"],
-  "sources": [{ "path": "usage.sqlite", "role": "primary", "count": 1665, "bytes": 1234567 }],
+  "sources": [{ "path": "usage.sqlite", "role": "primary", "count": 944, "bytes": 434176 }],
   "focusDay": "2026-09-14",
-  "health": { "cookie": true, "lastRunAt": "2026-09-14 14:51:28", "lastRunStatus": "ok" }
+  "health": { "cookie": true, "lastRunAt": "2026-09-14 15:52:10", "lastRunStatus": "ok" }
 }
 ```
 
@@ -73,14 +73,14 @@
 {
   "manifest": { ... 同上 ... },
   "daily": [
-    { "d": "2026-09-08", "c": 1423.5, "k": 88, "fc": 40, "bc": 48,
-      "m": { "deepseek-v4-flash": 800.2, "glm-5.3-flash": 623.3 },
+    { "d": "2026-09-08", "c": 168.4, "k": 31, "fc": 12, "bc": 19,
+      "m": { "demo-flash": 62.1, "demo-pro": 41.7 },
       "h": [0,0,0,0,0,0,0,0,0,12.5, ...] }
   ],
   "dims": { "model": [...], "client": [...], "hour": [...] },
-  "top":  [ { "id": "...", "c": 319.5, "m": "kimi-k3-1", "cl": "VSCode", "t": "2026-09-12 15:04:00", "px": "摘要…" } ],
+  "top":  [ { "id": "...", "c": 412.8, "m": "demo-reason", "cl": "vscode", "t": "2026-09-12 15:04:00", "px": "摘要…" } ],
   "records": [ { "id": "...", "c": 5.78, "m": "...", "cl": "...", "t": "...", "px": "..." } ],
-  "recordsTotal": 1665,
+  "recordsTotal": 944,
   "recordsCap": 20000,
   "recordsTruncated": false,
   "totals": { ... },
@@ -106,13 +106,13 @@ KPI + 环比。`from`/`to` 缺省时自动取全量区间。
 
 ```json
 {
-  "records": 428, "credits": 2145.6, "calls": 300,
-  "freeCalls": 120, "billableCalls": 180,
+  "records": 226, "credits": 1180.4, "calls": 226,
+  "freeCalls": 78, "billableCalls": 148,
   "firstDay": "2026-09-08", "lastDay": "2026-09-14", "days": 7,
-  "models": 9, "clients": 2,
+  "models": 7, "clients": 3,
   "first": "...", "last": "...",
   "window": { "from": "2026-09-08", "to": "2026-09-14", "days": 7 },
-  "avgPerCall": 7.15,
+  "avgPerCall": 5.22,
   "prev": { ... 上一段等长窗口的同样结构 ... },
   "delta": { "credits": 12.3, "calls": -4.1, "window": { "from": "...", "to": "..." } },
   "partial": { "date": "2026-09-14", "hhmm": "14:52" }
@@ -132,7 +132,7 @@ KPI + 环比。`from`/`to` 缺省时自动取全量区间。
 | `from` / `to` | 筛选窗口 |
 
 ```json
-{ "days": [ { "d": "2026-09-08", "c": 1423.5, "k": 88, "fc": 40, "bc": 48,
+{ "days": [ { "d": "2026-09-08", "c": 168.4, "k": 31, "fc": 12, "bc": 19,
               "m": {...}, "h": [24 个元素] } ] }
 ```
 
@@ -146,8 +146,8 @@ KPI + 环比。`from`/`to` 缺省时自动取全量区间。
 
 ```json
 {
-  "model":  [ { "name": "deepseek-v4-flash", "credits": 3784.86, "calls": 234, "avg": 16.17, "free": 0 } ],
-  "client": [ { "name": "VSCode", ... } ],
+  "model":  [ { "name": "demo-flash", "credits": 1286.4, "calls": 252, "avg": 5.1, "free": 0 } ],
+  "client": [ { "name": "vscode", ... } ],
   "hour":   [ { "name": "14", ... } ]
 }
 ```
@@ -162,7 +162,7 @@ KPI + 环比。`from`/`to` 缺省时自动取全量区间。
 | `n` | 50 | 返回条数（1~1000） |
 
 ```json
-[ { "id": "…", "c": 319.5, "m": "kimi-k3-1", "cl": "VSCode",
+[ { "id": "…", "c": 412.8, "m": "demo-reason", "cl": "vscode",
     "t": "2026-09-12 15:04:00", "px": "截断后的 Prompt 摘要" } ]
 ```
 
@@ -184,7 +184,7 @@ KPI + 环比。`from`/`to` 缺省时自动取全量区间。
 {
   "items": [ { "request_id": "…", "credits": 5.78, "model": "…",
                "client": "…", "ts": "2026-09-14 14:20:00", "prompt": "…" } ],
-  "total": 1665, "page": 1, "size": 50, "pages": 34,
+  "total": 944, "page": 1, "size": 50, "pages": 19,
   "window": { "from": "...", "to": "..." }
 }
 ```
@@ -292,7 +292,7 @@ KPI + 环比。`from`/`to` 缺省时自动取全量区间。
 
 | 场景 | 响应 |
 |---|---|
-| 成功 | `200 {"ok": true, "result": {"message": "新增 11 条，重复 6 条，存档共 1665 条", ...}}` |
+| 成功 | `200 {"ok": true, "result": {"message": "新增 11 条，重复 6 条，存档共 944 条", ...}}` |
 | 已有采集在跑 | `409 {"ok": false, "error": "busy", "message": "..."}` |
 | Cookie 失效 | `401 {"ok": false, "error": "cookie_expired", "message": "..."}` |
 | 云端异常 | `502 {"ok": false, "error": "api", "message": "..."}` |

docs/DEPLOYMENT.md

@@ -544,10 +544,10 @@ sqlite3.OperationalError: unable to open database file
 docker compose -f docker-compose.yml -f docker-compose.hostdir.yml up -d
 docker compose exec portal python -c \
   "import sqlite3;print(sqlite3.connect('/app/data/usage.sqlite').execute('select count(*) from usage_records').fetchone())"
-# -> (1665,)   容器侧正常
+# -> (944,)   容器侧正常
 
 python manage.py stats          # 宿主侧随手跑一次「纯读」的 CLI
-# -> 存档：1665 条 …
+# -> 存档：944 条 …
 
 docker compose exec portal python -c \
   "import sqlite3;sqlite3.connect('/app/data/usage.sqlite')"

docs/USER-GUIDE.md

@@ -3,6 +3,11 @@
 > 面向**使用者**（不是开发者）。读完这份就能独立完成日常操作：
 > 登录 → 看用量 → 配置采集 → 查明细 → 导数据 → 处理常见异常。
 
+> **关于配图**：本文所有截图都用 `tools/demo_data.py` 生成的**合成示例数据**渲染
+> ——模型名统一是 `demo-*`，客户端为 `vscode`/`webconsole`/`sdk`，Prompt 是通用示例文本。
+> 所以你可以照着重现出几乎一样的界面，也不必担心文档里夹带真实账号信息。
+> 想自己搭一份这样的环境：`python tools/demo_data.py` 然后按输出的提示起服务即可。
+
 **目录**
 
 - [一、这个系统是做什么的](#一这个系统是做什么的)