No screen on a stranger's way to their own forge says subscription, autonomy, cell, child or claim: one test renders each screen and fails on the word #11172

For: #11158's rule that a person is never shown a word they have not been taught.

Done when:

• [x] A new test renders each server-rendered screen a signed-out person passes on the way to their own forge: the anonymous home, the new-forge form (src/web/pages/new-forge.ts), the claim or start screen (claim.ts, start_claim.ts) and the first-login next steps (next-steps.ts). It reads the visible text, not attributes or URLs.
• [x] The test fails on any banned word and names the screen and the sentence.
• [x] Every word it finds today is rewritten in plain words on the page, and the test is green.
• [x] The banned words come from the module of the issue that writes the journey into docs/DESIGN.md, so the list lives in one place.

Files: one new test and the copy on the pages it names. Risk: route and URL names stay as they are; only the text a person reads changes.

Reviewed pull #11198 at its head: ticked A new test renders each server-rendered screen a signed-out person passes on the way to their own forge: the anonymous home, the new-forge form (src/web/pages/new-forge.ts), the claim or start screen (claim.ts, start_claim.ts) and the first-login next steps (next-steps.ts). It reads the visible text, not attributes or URLs.; The test fails on any banned word and names the screen and the sentence.; Every word it finds today is rewritten in plain words on the page, and the test is green.; The banned words come from the module of the issue that writes the journey into docs/DESIGN.md, so the list lives in one place..