chore: migrate heading-map → translation frontmatter

[mmcky]

Migrate all 25 lecture files from flat heading-map: YAML to structured translation: { title, headings } format using action-translation v0.13.0 headingmap CLI.

Before:

heading-map:
  overview: "概述"
  equilibrium: "均衡"

After:

translation:
  title: 蛛网模型
  headings:
    overview: "概述"
    equilibrium: "均衡"

Backward compatible — the sync pipeline reads both formats. This is a proactive migration for consistency.

Related: QuantEcon/action-translation v0.13.0

[Copilot]

Pull request overview

Migrates translated lecture frontmatter from the legacy flat heading-map: YAML to the structured translation: { title, headings } format, and updates translation state metadata to reflect the newer action-translation tool version.

Changes:

• Replace heading-map: with translation.title + translation.headings across 25 lecture Markdown files.
• Add translation.title where previously no heading map existed (e.g., intro.md, status.md).
• Bump .translate/state/*.yml tool-version entries to 0.13.0.

Reviewed changes

Copilot reviewed 51 out of 51 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
lectures/writing_good_code.md	Migrate frontmatter to translation format (title + headings).
lectures/workspace.md	Migrate frontmatter to translation format (title + headings).
lectures/troubleshooting.md	Migrate frontmatter to translation format (title + headings).
lectures/sympy.md	Migrate frontmatter to translation format (title + headings).
lectures/status.md	Add translation.title to frontmatter.
lectures/scipy.md	Migrate frontmatter to translation format (title + headings).
lectures/python_oop.md	Migrate frontmatter to translation format (title + headings).
lectures/python_essentials.md	Migrate frontmatter to translation format (title + headings).
lectures/python_by_example.md	Migrate frontmatter to translation format (title + headings).
lectures/python_advanced_features.md	Migrate frontmatter to translation format (title + headings).
lectures/pandas_panel.md	Migrate frontmatter to translation format (title + headings).
lectures/pandas.md	Migrate frontmatter to translation format (title + headings).
lectures/oop_intro.md	Migrate frontmatter to translation format (title + headings).
lectures/numpy_vs_numba_vs_jax.md	Migrate frontmatter to translation format (title + headings).
lectures/numpy.md	Migrate frontmatter to translation format (title + headings).
lectures/numba.md	Migrate frontmatter to translation format (title + headings).
lectures/need_for_speed.md	Migrate frontmatter to translation format (title + headings).
lectures/names.md	Migrate frontmatter to translation format (title + headings).
lectures/matplotlib.md	Migrate frontmatter to translation format (title + headings).
lectures/jax_intro.md	Migrate frontmatter to translation format (title + headings).
lectures/intro.md	Add translation.title to frontmatter.
lectures/getting_started.md	Migrate frontmatter to translation format (title + headings).
lectures/functions.md	Migrate frontmatter to translation format (title + headings).
lectures/debugging.md	Migrate frontmatter to translation format (title + headings).
lectures/about_py.md	Migrate frontmatter to translation format (title + headings).
.translate/state/writing_good_code.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/workspace.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/troubleshooting.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/sympy.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/status.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/scipy.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/python_oop.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/python_essentials.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/python_by_example.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/python_advanced_features.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/pandas_panel.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/pandas.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/oop_intro.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/numpy_vs_numba_vs_jax.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/numpy.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/numba.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/need_for_speed.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/names.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/matplotlib.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/jax_intro.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/intro.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/getting_started.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/functions.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/debugging.md.yml	Update translation state tool-version to 0.13.0.
.translate/state/about_py.md.yml	Update translation state tool-version to 0.13.0.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.