chore: import upstream snapshot with attribution

.claude/rules/docs-writing.md

@@ -0,0 +1,14 @@
+---
+paths:
+  - "docs/**"
+---
+
+# Documentation Writing Rules
+
+- Use Mintlify MDX format. Frontmatter: `title`, `description`, `sidebarTitle` (optional).
+- After creating a new page, add it to `docs.json` navigation under the correct group.
+- Use Mintlify components: `<Note>`, `<Warning>`, `<Info>`, `<Tip>`, `<CodeGroup>`, `<Expandable>`, `<Steps>`/`<Step>`.
+- Code examples should be complete and runnable where possible.
+- Always import from `@trigger.dev/sdk`, never `@trigger.dev/sdk/v3`.
+- Keep paragraphs short. Use headers to break up content.
+- Link to related pages using relative paths (e.g., `[Tasks](/tasks/overview)`).