[In progress] Add feedback/suggestion forms to Glossary and Adopting Principled Education pages

[richarddushime]

Description

Adds two native feedback forms, on individual glossary term pages and the "Adopting Principled Education" page, that submit directly to a Google Sheet via a shared Google Apps Script backend, no third-party form embed required.

Glossary entry pages

New "Suggest an improvement" form (correction / suggestion / other, message, optional email), translated into all 5 glossary languages, RTL-aware for Arabic.
Submits to a glossary_feedback sheet tab

Adopting Principled Education page

APE feedback form (tips used, what worked, student demographics, comments) matching the page's existing "share your experience" call-to-action, replacing a dead/empty Google Form link.
Submits to a separate adopting_feedback sheet tab in the same spreadsheet.

Appscript
.feedback-appscript/Code.js now dispatches on a type field to route chat / glossary / adopting submissions to their own created sheet tabs in one shared Apps Script deployment.

Fixes #743

Type of Change

• Content/documentation update
• New feature

Testing

• Tested locally
• Previewed on staging.forrt.org

Checklist

• Self-reviewed my changes
• Verified links and formatting are correct
• No new warnings or errors

Notes

[github-actions]

👍 All image files/references (if any) are in webp format, in line with our policy.

[github-actions]

📝 Spell Check Results

Found 6 potential spelling issue(s) when checking 7 changed file(s):

📄 layouts/glossary/single.html

Line	Issue
32	Referenz ==> Reference

📄 layouts/partials/glossary_feedback_form.html

Line	Issue
27	oder ==> order, older, coder, odder, odor, over, doer
27	oder ==> order, older, coder, odder, odor, over, doer
31	Referenz ==> Reference
34	oder ==> order, older, coder, odder, odor, over, doer
59	bu ==> by, be, but, bug, bun, bud, buy, bum

---

ℹ️ How to address these issues:

1. Fix the typo: If it's a genuine typo, please correct it.
2. Add to whitelist: If it's a valid word (e.g., a name, technical term), add it to .codespell-ignore.txt
3. False positive: If this is a false positive, please report it in the PR comments.

_{🤖 This check was performed by codespell}

[LukasWallrich]

✅ Staging Deployment Status

This PR has been successfully deployed to staging as part of an aggregated deployment.

Deployed at: 2026-08-26 22:52:17 UTC
Staging URL: https://staging.forrt.org

The staging site shows the combined state of all compatible open PRs.