chore: add Linear ticket workflow cursor rule

Author: fadi-george

.cursor/rules/linear.mdc

@@ -0,0 +1,38 @@
+---
+description: Prompt to create a Linear ticket when working on code fixes without a Linear branch
+alwaysApply: true
+---
+
+# Linear Ticket Workflow
+
+When starting work on a code fix, bug fix, or feature implementation, check the current git branch name:
+
+```bash
+git rev-parse --abbrev-ref HEAD
+```
+
+If the branch name does **not** contain a Linear ticket ID (pattern: `<name>/SDK-<number>-<description>`), ask the user if they'd like to create a Linear ticket and switch to a Linear-linked branch.
+
+## When to prompt
+
+- You are about to make or are making code changes (fixes, features, refactors)
+- The current branch is `main`, `master`, or a branch without a ticket ID (e.g. `fadi/fix-something` instead of `fadi/SDK-1234-fix-something`)
+
+## What to ask
+
+Use the AskQuestion tool:
+- "Your current branch doesn't have a Linear ticket. Want me to create one and switch to the Linear branch?"
+- Options: "Yes, create a ticket" / "No, continue without one"
+
+## If the user says yes
+
+1. Create a Linear issue using the `save_issue` Linear MCP tool with a concise title describing the fix and assign it to `"me"`.
+2. Retrieve the created issue using the `get_issue` Linear MCP tool to get the git branch name from the response.
+3. Create and switch to the branch returned by Linear:
+   ```bash
+   git checkout -b <branch-name-from-linear>
+   ```
+
+## If the user says no
+
+Continue working on the current branch without further prompts about this.