Rename directories: coding-context → prompts, prompts/ → tasks/ (#12)

* Initial plan

* Rename prompts directory to tasks and coding-context to prompts

Co-authored-by: alexec <1142830+alexec@users.noreply.github.com>

* Add real-world task examples to README

Co-authored-by: alexec <1142830+alexec@users.noreply.github.com>

* Update Jira examples to use jira-cli tool with exact commands

Co-authored-by: alexec <1142830+alexec@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: alexec <1142830+alexec@users.noreply.github.com>

Author: Copilot