Ensure Task GitHub Issue — Sub-Routine

Purpose

This is an internal sub-routine called by create-task and review-task. Do not invoke directly.

Inputs (set by the calling skill before invoking):

• TASK_FILE_PATH — repo-relative path to the task markdown file (e.g. docs/tasks/task.5.cache-lib-refactor/task.5.cache-lib-refactor.md)

Output (set by this sub-routine, available to the calling skill):

• TASK_ISSUE_NUM — the GitHub issue number for the task (integer string), or empty string on failure

Steps

Step T1: Read Task Frontmatter