feat: add initial skill authoring workspace

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

skills/zhihu-write/references/editor-flow.md

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+# Editor Flow
+
+This skill is based on the preserved source flow in `assets/zhihu_write_flow.source.json`.
+
+## Entry Points
+
+- Creator center entry URL: `https://www.zhihu.com/creator`
+- BrowserAttached direct editor URL: `https://www.zhihu.com/creator/posts/new`
+
+`https://zhuanlan.zhihu.com/write` exists in the preserved source flow, but it is not the default entry point inside the current SuperRPA browser host because the host domain policy only guarantees `www.zhihu.com`.
+
+The current BrowserAttached flow enters creator center first, then uses the packaged browser-script tools to resolve whether the session is blocked by login, already in the editor, or needs the canonical creator editor route.
+
+## Required Inputs
+
+- `title`
+- `body`
+
+Both fields must be non-empty before any browser action starts.
+
+## Core Sequence
+
+1. Navigate to creator center.
+2. Click the write-article entry.
+3. Wait for the title input in the editor domain.
+4. Fill the title with `clear_first = true`.
+5. Fill the body editor with `clear_first = true`.
+6. If publish mode:
+   - scroll to the publish button
+   - click publish
+   - wait for publish confirmation dialog
+   - click confirm publish
+   - wait for published title
+   - verify published title text
+
+## Readiness Checks
+
+- The editor is considered ready only after the title input appears.
+- The publish flow is not complete until at least one post-publish verification succeeds.
+
+## URL Capture Rules
+
+- Pre-publish clicks may return an editor URL.
+- A valid published article URL should match the published article prefix and should not end in `/edit`.
+- If publish mode finishes without a published article URL, treat the run as unconfirmed even if some clicks succeeded.
+
+## Known Brittle Points
+
+- creator-center article entry selector
+- placeholder-based title input selector
+- generic primary-button publish selectors
+
+These should be revalidated before any live publish run.