Phase 1 MVP: crawl 10 high-quality oshwhub projects into LFS

Why:
- Charles 指定：先爬 10 个高质量项目存 Gitea LFS，一个项目一个文件夹，
  保留原文件和 URL。先以小批量验证 schema + LFS 流水线，放量前再拍板
  存储规模。

What:
- crawlers/oshwhub: 列表 API (`/api/project?sort=hot`) + SSR HTML 解析，
  一次性产出 metadata / description / cover / files / _urls
- schemas/project.schema.json: 跨源统一 schema
- docs/sources/oshwhub.md: API 入口 / 字段映射 / 陷阱调研
- pyproject.toml: httpx[http2] 单依赖
- .gitattributes: data/raw/**/files/** 一律走 LFS（规则写窄，避免误伤 schemas/*.json 等）
- .gitignore: 移除 data/raw/* 排除（改走 LFS 入库）

10 个项目覆盖：调试器 / 加热台 / 盖革计数器 / 数控电源 / 焊台 /
智能手表 / USB 测电流 / ZVS 感应加热 / AI 开发板 / 红外热成像。
共 52 附件 ≈ 524 MB 入 LFS，筛选判据 grade=4 & likes>=100 & 多样性。

Known gaps（见 plan.md § Phase 1.4）：
- EasyEDA 源 JSON 需登录 (u.lceda.cn)，v0.1 跳过
- fs-web-stream.jlc.com 的工程源下载未测
- scripts/validate.py 自动 schema 校验未实现

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

data/raw/oshwhub/7b6a398811f14eba9a952b8d2ddd7ace/_urls.json

@@ -0,0 +1,26 @@
+{
+  "detail_url": "https://oshwhub.com/sheep_finder/pcb-heng-wen-jia-re-tai",
+  "cover_url": "https://image.lceda.cn/avatars/2022/10/q3e5mInHcWPvP4K2wqCpzB0dJr8n0tCHj4OJb4Wh.png",
+  "attachments": [
+    {
+      "name": "加热台量产计划.zip",
+      "url": "https://image.lceda.cn/attachments/2023/3/3D63VEzSSgu7tMjN4RTiEbDSiqmlo1Yiv6uvNWXk.zip",
+      "original_id": "bebc0475e03e43199806c4dfc78847b1"
+    },
+    {
+      "name": "焊接烧录指引v2.pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/2AhHlXehkZO4nC0zGTVH5TKH50X0IHZtmacdlfWq.pdf",
+      "original_id": "3bd33eb9d73b4b4db05820c9fbfccbc1"
+    },
+    {
+      "name": "加热台Q&A.docx",
+      "url": "https://image.lceda.cn/attachments/2023/4/RwQkCsS9xv2UWoZ3JbVPgKa7IULczPGBFyk9tWLm.bin",
+      "original_id": "e5f6f384fb11489f99e27e8aebf06ffb"
+    },
+    {
+      "name": "2023-2-7 焊接编码器教程.pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/8cflSrzwHsuPme258lpLoQLVym2YisHLNzmWsgly.pdf",
+      "original_id": "21963ef73c534309b1754bd2ce452a2f"
+    }
+  ]
+}

data/raw/oshwhub/7b6a398811f14eba9a952b8d2ddd7ace/description.md

@@ -0,0 +1,10 @@
+# 加热台量产计划
+
+基于启凡科创的物联网加热台优化而来。
+对应启凡科创v2.0版本作出适配
+
+---
+- Source: https://oshwhub.com/sheep_finder/pcb-heng-wen-jia-re-tai
+- Author: sheep_finder (sheep_finder)
+- License: Public Domain
+- Published: 2025-11-10T02:35:05.000Z

data/raw/oshwhub/7b6a398811f14eba9a952b8d2ddd7ace/metadata.json

@@ -0,0 +1,85 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/sheep_finder/pcb-heng-wen-jia-re-tai",
+  "project_id": "7b6a398811f14eba9a952b8d2ddd7ace",
+  "title": "加热台量产计划",
+  "description_short": "基于启凡科创的物联网加热台优化而来。\n对应启凡科创v2.0版本作出适配",
+  "description_path": "description.md",
+  "author": {
+    "username": "sheep_finder",
+    "display_name": "sheep_finder",
+    "user_id": "dc43748f38a9490396e4969820abff90"
+  },
+  "license": "Public Domain",
+  "tags": [],
+  "created_at": "2022-10-03T04:28:21.000Z",
+  "updated_at": "2026-04-03T01:41:07.000Z",
+  "published_at": "2025-11-10T02:35:05.000Z",
+  "crawled_at": "2026-04-23T11:25:46.651730+00:00",
+  "metrics": {
+    "likes": 1447,
+    "stars": 3293,
+    "forks": 3939,
+    "views": 347329,
+    "watch": 0,
+    "comments": 383
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/avatars/2022/10/q3e5mInHcWPvP4K2wqCpzB0dJr8n0tCHj4OJb4Wh.png",
+    "path": "cover.png"
+  },
+  "files": [
+    {
+      "name": "加热台量产计划.zip",
+      "url": "https://image.lceda.cn/attachments/2023/3/3D63VEzSSgu7tMjN4RTiEbDSiqmlo1Yiv6uvNWXk.zip",
+      "original_id": "bebc0475e03e43199806c4dfc78847b1",
+      "ext": "zip",
+      "mime": "application/x-zip-compressed",
+      "size": 21328814,
+      "md5": "6502c95eaf49092d463ea14be07d1cf9",
+      "path": "files/加热台量产计划.zip",
+      "sha256": "900f4c61e72a1ab22a113f0d55525244cd5eb072858cb0c4e5c950a7b647ad2e"
+    },
+    {
+      "name": "焊接烧录指引v2.pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/2AhHlXehkZO4nC0zGTVH5TKH50X0IHZtmacdlfWq.pdf",
+      "original_id": "3bd33eb9d73b4b4db05820c9fbfccbc1",
+      "ext": "pdf",
+      "mime": "application/pdf",
+      "size": 1869778,
+      "md5": "bbcd571e21e230aec83af6909c453a80",
+      "path": "files/焊接烧录指引v2.pdf",
+      "sha256": "1551906d358b75a1ac070a3c13341761d55c0cd378697a90edc4a419ad6c195f"
+    },
+    {
+      "name": "加热台Q&A.docx",
+      "url": "https://image.lceda.cn/attachments/2023/4/RwQkCsS9xv2UWoZ3JbVPgKa7IULczPGBFyk9tWLm.bin",
+      "original_id": "e5f6f384fb11489f99e27e8aebf06ffb",
+      "ext": "bin",
+      "mime": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+      "size": 13592,
+      "md5": "e3f6675ec77f862d15250075e888838d",
+      "path": "files/加热台Q&A.docx",
+      "sha256": "b048901d8851b75257305865f2a9bbf97239756d2c4f0d9ab3b09d1828d95263"
+    },
+    {
+      "name": "2023-2-7 焊接编码器教程.pdf",
+      "url": "https://image.lceda.cn/attachments/2023/4/8cflSrzwHsuPme258lpLoQLVym2YisHLNzmWsgly.pdf",
+      "original_id": "21963ef73c534309b1754bd2ce452a2f",
+      "ext": "pdf",
+      "mime": "application/pdf",
+      "size": 857188,
+      "md5": "0bbf490c7d06fb733f88ddd3715d5a7d",
+      "path": "files/2023-2-7 焊接编码器教程.pdf",
+      "sha256": "933b1d40e5c8a1c80b3499931c002b7d30a408dc2dc9fa1ba8954b772fdd3961"
+    }
+  ],
+  "raw_fields": {
+    "path": "sheep_finder/pcb-heng-wen-jia-re-tai",
+    "grade": 4,
+    "origin": "std",
+    "public": true,
+    "publish": true,
+    "skipped_files": []
+  }
+}