A new forge's first-login page uses plain words: a test fails on jargon #10712

A zero-technical client lands on apps with agents working on them. The page must read that way.

Done:

• [ ] A word list (egress, sentinel, shard, cell, gate, rebase, tbw and the like) lives in one small module; a test renders the page a new forge's first login lands on and fails if any word appears in visible text.
• [ ] Offending wording on that page is replaced with plain words ("your apps", "the crew is working on…").
• [ ] The page shows apps with their agents working and three next steps, as docs/VISION.md says.
• [ ] Before/after screenshots in the pull.

Files: the first-login page under src/web/pages, src/text (word list), test/ Risks: matching inside words; match whole words, case-insensitive. Brief: scout.

Split into #10752 (word list in test/helpers, visible text and labels, every role, page reworded), #10753 (apps with the crew on them) and #10754 (small: one name per thing in the account menu, the rename pull #10719 wandered into).