docs(web): add description for #theme/Footer and #theme/Metabar

[TusharThakur04]

Description

The web generator supports 6 overridable #theme/* aliases, but the README only documents 4 of them. This PR adds the missing #theme/Metabar and #theme/Footer entries to the default imports table, introduced in #677.

Validation

No functional changes

Related Issues

Related to #677

Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run node --run test and all tests passed.
• I have check code formatting with node --run format & node --run lint.
• I've covered new added functionality with unit tests if necessary.

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Project	Deployment	Actions	Updated (UTC)
api-docs-tooling	Ready	Preview	Apr 12, 2026 4:35pm

[cursor]

PR Summary

Low Risk
Low risk documentation-only change that updates the web generator README without affecting runtime behavior.

Overview
Updates the web generator README to fully document the default overridable #theme/* imports by adding the missing #theme/Metabar and #theme/Footer entries (including their defaults and descriptions) to the Default imports table.

^{Reviewed by Cursor Bugbot for commit 46eb53a. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.43%. Comparing base (3d00fa8) to head (46eb53a).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #765   +/-   ##
=======================================
  Coverage   78.43%   78.43%           
=======================================
  Files         157      157           
  Lines       13962    13962           
  Branches     1152     1152           
=======================================
  Hits        10951    10951           
  Misses       3006     3006           
  Partials        5        5           

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