Remove dead code: TPEN.getAllPublicProjects() in TPEN.js

[thehabes]

Cleanup

Type: Dead code removal
File: api/TPEN.js

Description

getAllPublicProjects() (lines 168-172) is dead code — never called from any component, page, or route in the codebase. It fetches GET /projects/public, a route that doesn't exist on the backend either.

Dead Code to Remove

async getAllPublicProjects() {
    // Logic to fetch all public projects
    return fetch(`${this.servicesURL}/projects/public`)
        .then(response => response.json())
}

Also remove any references in _classes/TPEN.md documentation (lines ~20, 80-82).

Context

Found during pre-production stack testing (2026-03-26). The backend route was flagged as missing (CenterForDigitalHumanities/TPEN-services#496), but investigation confirmed nothing in Interfaces ever calls it. Services issue closed as not_planned.

This appears to be a stub for a "browse public projects" feature that was never implemented. If this feature is planned for the future, a new issue should track both the backend route and the frontend UI together.