Work with Linear

Do all Linear work through the installed Linear MCP server.

Rules

Use the Linear MCP tools (mcp__linear__*: list_issues, get_issue, create_issue, update_issue, list_comments, create_comment, …). Read the actual schemas before calling — Linear renames tools without notice.
Never fall back to the GraphQL API or web UI. If no Linear MCP server is connected, stop and tell the user to add https://mcp.linear.app/mcp (HTTP transport) to their agent. In Claude Code:
```
claude mcp add --transport http linear https://mcp.linear.app/mcp
```
Resolve names to IDs before writing. Team, state, label, and assignee fields take UUIDs; a display name fails or silently no-ops. Call the matching list_* tool first.
Keep comments short. 1–3 sentences. Outcome first, link the PR instead of pasting the diff, no preamble, no recap of the ticket, no sign-off, no emoji.
```
Root cause: config loader reads `retry_count` but the YAML key is `retryCount`, so it binds 0. Fixed in #482.
```