feat: add Theory of Change page and enhance About Us with a link to it

[jeromehardaway]

This pull request introduces significant updates to the "About Us" page and adds a new "Theory of Change" page to the project. The changes enhance content structure, improve user engagement, and extend functionality. Below is a breakdown of the most important updates grouped by theme:

Content Updates

• Refactored the "About Us" page's call-to-action (CTA) content to simplify and focus messaging, replacing a lengthy description with concise and impactful text.
• Added a new JSON data file (theory-of-change.json) to define the content structure for the "Theory of Change" page, including sections for core beliefs, inputs, activities, outputs, outcomes, and long-term impact.

Functional Enhancements

• Introduced a new TheoryOfChange page (theory-of-change.tsx) that dynamically renders content based on the new JSON data file, including support for headings, text, and lists.
• Added a link on the "About Us" page to navigate to the "Theory of Change" page, improving discoverability of the new content.

Code Structure and Typing Improvements

• Updated the PageContent interface in about-us.tsx to support new content fields like section_title, items, and buttons, ensuring consistent data handling across pages.
• Added the Link component from next/link to the "About Us" page to enable navigation to the new page.

These changes collectively improve the user experience by providing clearer messaging, adding valuable new content, and enhancing navigation between related pages.

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vets-who-code-app	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 5, 2025 11:45pm

[Copilot]

Pull Request Overview

This PR adds a new "Theory of Change" page and enhances the "About Us" page by integrating a link to the new page while updating content structures and data interfaces.

• Adds a new Theory of Change page that dynamically renders content from a JSON data file.
• Updates the About Us page to include a prominent link to the Theory of Change page.
• Refactors JSON content for both pages, updating CTA area structures and content definitions.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/pages/theory-of-change.tsx	Introduces a new page using JSON-based content and modern layout patterns.
src/pages/about-us.tsx	Enhances the page with a new Theory of Change link and updates SEO title.
src/data/innerpages/theory-of-change.json	Defines the content structure for the new Theory of Change page.
src/data/innerpages/about-us.json	Updates the CTA area content, replacing the previous buttons key with items.

Comments suppressed due to low confidence (1)

src/data/innerpages/about-us.json:209

• The CTA area structure has been updated from using a 'buttons' field to an 'items' array with headings and texts. Please ensure the consuming CTA component is updated to handle this new structure consistently.

},      {