Add next five GitHub domain todo specs and remaining-domain estimate

[Copilot]

Summary

Adds five new .github/todo proposals for the next GitHub simulator domains and computes the updated remaining-domain count. This scopes upcoming implementation work and makes backlog size explicit (31 domains remaining).

Original Prompt

Create todos for building out the next 5 GitHub domains. Create a pull request. Then estimate how many domains are remaining.

Manual acceptance tests

• .github/todo includes emojis.md, licenses.md, markdown.md, meta.md, and rate-limit.md.
• Each new todo contains YAML front matter with title plus ## Summary, ## Scope, and ## Implementation plan.
• Each todo is scoped to its matching route domain and references context/scenario/tests work.
• Remaining-domain estimate in the PR is consistent with route-domain groups still using $.response[...].random() (36 total, 5 newly queued, 31 remaining).

Tasks

• Domain backlog expansion
  • Added five new task specs under .github/todo for: Emojis, Licenses, Markdown, Meta, and Rate Limit.
• Task structure standardization
  • Used the existing proposal format (front matter + summary/scope/implementation plan) for each domain file.
• Remaining work estimation
  • Counted route-domain groups still returning randomized responses and subtracted this batch to produce the remaining estimate.
• Example snippet

  ---
  title: Implement Emojis domain in the GitHub API simulator
  ---
  
  ## Summary
  ...
  ## Scope
  ...
  ## Implementation plan
  ...

[Copilot]

Pull request overview

Adds five new .github/todo task specs to queue up upcoming GitHub simulator domain implementations (Emojis, Licenses, Markdown, Meta, Rate Limit) and document the next work items using the repo’s existing todo format.

Changes:

• Added todo specs for five GitHub API domains under .github/todo/.
• Standardized each todo with front matter and ## Summary / ## Scope / ## Implementation plan.
• Documented planned context/scenario/test work for each domain.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
.github/todo/emojis.md	New todo spec for implementing deterministic GET /emojis.
.github/todo/licenses.md	New todo spec for Licenses domain (needs scope/plan to include /licenses/{license} as well).
.github/todo/markdown.md	New todo spec for Markdown domain (needs scope/plan to include /markdown/raw as well).
.github/todo/meta.md	New todo spec for implementing deterministic GET /meta.
.github/todo/rate-limit.md	New todo spec for implementing deterministic GET /rate_limit.