feat: add initial skill authoring workspace

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

skills/zhihu-hotlist-screen/SKILL.md

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+---
+name: zhihu-hotlist-screen
+description: Use when the user wants to turn collected Zhihu hotlist data into an ECharts dashboard, leadership demo screen, or new-tab HTML presentation artifact.
+version: 0.1.0
+author: sgclaw
+tags:
+  - zhihu
+  - browser
+  - hotlist
+  - echarts
+  - dashboard
+---
+
+# Zhihu Hotlist Screen
+
+Convert an already collected Zhihu hotlist artifact into a local ECharts `.html` dashboard for leadership demos. This skill is downstream-only: it consumes the structured artifact from `zhihu-hotlist` and hands it to `screen_html_export`.
+
+## When to Use
+
+- The user asks for知乎热榜大屏、看板、dashboard、ECharts 演示页。
+- The user wants a leadership demo artifact that can be opened in a 新标签页.
+- An upstream collection step already produced ordered hotlist rows.
+- The final deliverable should be a local `.html` page instead of Excel.
+
+Do not use this skill for:
+
+- recollecting Zhihu data from scratch when no hotlist artifact exists
+- replacing `zhihu-hotlist` as the browser collection skill
+- exporting Office files such as `.xlsx`
+
+## Upstream Browser Contract
+
+- Upstream Zhihu collection still belongs to `zhihu-hotlist`, which uses `superrpa_browser` inside the sgClaw browser host.
+- Upstream browser calls must keep `expected_domain` as a bare hostname such as `www.zhihu.com`.
+- Upstream selectors must remain valid CSS selectors only.
+- This skill does not invent new browser steps. It transforms the collected artifact after upstream browser work is stable.
+
+## Required Input Artifact
+
+Use the ordered artifact produced by `zhihu-hotlist`:
+
+```json
+{
+  "source": "https://www.zhihu.com/hot",
+  "sheet_name": "知乎热榜",
+  "columns": ["rank", "title", "heat"],
+  "rows": [[1, "标题", "344万"]]
+}
+```
+
+Rules:
+
+- `rows` is the primary payload for this skill.
+- Preserve the captured ranking order.
+- Do not invent extra rows that were not collected upstream.
+- If the upstream artifact is partial, keep that status visible in the final summary.
+
+## Tool Contract
+
+- Call `screen_html_export` to render the final ECharts dashboard.
+- The tool result must include a local `.html` path.
+- The tool result must include a `presentation` object for 新标签页 delivery.
+- Prefer `presentation.url` as the browser-open target.
+- Do not use `shell` as the primary rendering path.
+
+## Workflow
+
+1. Confirm that an upstream hotlist artifact with ordered `rows` already exists.
+2. If the upstream artifact is missing, incomplete, or blocked by a login/verification condition, stop and report that upstream collection must be fixed first.
+2. Load [render-flow.md](references/render-flow.md) and prepare the dashboard payload.
+3. Call `screen_html_export`.
+4. Return the final local `.html` path plus the `presentation` object.
+5. State explicitly that the final呈现 should open `presentation.url` in a 新标签页.
+
+Do not:
+
+- recollect Zhihu browser data inside this downstream skill
+- restart browser probing after the upstream artifact is already stable
+- hide upstream partial-data or blocked-page status in the final dashboard summary
+
+## Output
+
+Return a concise result with:
+
+- artifact type: `echarts_dashboard`
+- source snapshot identifier
+- local `.html` output path
+- `presentation` object
+- whether the data is complete or partial
+- optional short demo summary after the artifact fields
+
+## References
+
+- Use [render-flow.md](references/render-flow.md) for the exact downstream handoff.
+- Template assets for this skill belong under `assets/`.
+- The base screen template is `assets/zhihu-hotlist-echarts.html`.
+
+## Common Mistakes
+
+- Recollecting Zhihu data inside this downstream presentation skill.
+- Returning only prose instead of the local `.html` path.
+- Dropping the `presentation` contract needed for 新标签页展示.
+- Mixing Excel export requirements into this dashboard skill.

skills/zhihu-hotlist-screen/references/render-flow.md

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+# Render Flow
+
+Use this flow after `zhihu-hotlist` has already produced ordered hotlist rows.
+
+1. Keep the upstream artifact as the source of truth:
+
+```json
+{
+  "source": "https://www.zhihu.com/hot",
+  "sheet_name": "知乎热榜",
+  "columns": ["rank", "title", "heat"],
+  "rows": [[1, "标题", "344万"]]
+}
+```
+
+2. Call `screen_html_export` with at least:
+
+```json
+{
+  "snapshot_id": "zhihu-hotlist-20260329",
+  "generated_at_ms": 1774713600000,
+  "rows": [[1, "标题", "344万"]]
+}
+```
+
+3. Expect the tool result to include:
+
+```json
+{
+  "output_path": "/abs/path/zhihu-hotlist-screen.html",
+  "presentation": {
+    "mode": "new_tab",
+    "title": "知乎热榜主题分类分析大屏",
+    "url": "file:///abs/path/zhihu-hotlist-screen.html",
+    "open_in_new_tab": true
+  }
+}
+```
+
+4. Final delivery rules:
+
+- The local `.html` path is the generated artifact.
+- `presentation.url` is the browser-open target.
+- Final wording should say the dashboard is ready for 新标签页展示.