feat+fix(image): 修复图片统计与预览链路，补齐筛选、缩略图、下载与图生图示例#14
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Laurel-rao wants to merge 3 commits into432539:mainfrom
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feat+fix(image): 修复图片统计与预览链路，补齐筛选、缩略图、下载与图生图示例#14Laurel-rao wants to merge 3 commits into432539:mainfrom
Laurel-rao wants to merge 3 commits into432539:mainfrom
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修复图片任务历史页面图片无法显示的问题。上游 chatgpt.com 的图片 URL 需要 Authorization header，浏览器直接访问会 403。 Changes: - 新增 internal/image/proxy_url.go 提供共享的签名逻辑 - me_handler.go 和 admin_handler.go 改为返回 /p/img/... 代理 URL - 重构 images_proxy.go 使用共享签名函数，消除代码重复 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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本 PR 主要完善图片任务链路，修复图片数量统计不准确和历史图片预览 403 问题，同时补齐缩略图预览、放大与下载能力，并补充图生图接口示例，覆盖后端统计、图片代理、个人中心、管理端和 API 文档页。
修改项：
修复图片生成数量统计错误
image_count回写type='image'、status='success'但image_count=0的记录按 1 张兜底统计，避免总量偏小修复历史图片预览 403
新增图片缩略图链路
thumb_kb参数，范围0-64thumb_kb>0时服务端将原图压缩为 JPEG 缩略图返回/Users/raojiajun/mypro/backend/gpt2api/internal/image/thumb.go，按宽度和质量多档降级，尽量控制输出体积upscale，避免先放大再压缩带来的额外 CPU 开销X-Thumb-KB头，便于确认缩略图命中新增个人图片任务筛选能力
/api/me/images/tasks新增查询参数status、keyword、start_at、end_at2006-01-02 15:04:05、RFC3339、2006-01-02优化管理端图片任务页
优化个人中心图片历史页
thumb_kb=10的压缩预览，降低加载体积补充图生图调用示例
reference_images的 curl 示例requests版图片生成示例requests版图生图示例reference_images支持 URL、data URL、纯 base64，以及最多 4 张、单张最大 20 MB 的说明其他同步变更
web/package-lock.json同步了license元数据字段，无业务行为变化验证：
go vet ./...go test ./...cd web && npm run build说明：