/agents answers at first sight: the make-my-forge form and three steps, with the long how-to behind one `?` #11068

Why: /agents is 1,148 words today (production, anonymous): the Make my forge form, then a wall of curl lines and notes. P9's rules (docs/DESIGN.md): one answer, no notes, help on demand.

Done:

• [x] Above the fold on a 360 px phone: what the page is (one line), the Make my forge form, and at most three steps an assistant takes, each one line.
• [x] Everything else (the curl examples, the claim and sleep rules, the account path) is in one disclosure opened by ? and is still in /llms.txt, word for word as today.
• [x] A test fixes a ceiling on the page's rendered notes and visible words outside the disclosure (count every note-class element, not only <p>), in the shape #10998 uses for /crew and /flow.
• [ ] Looks before and after, light and dark, on the pull; bun scripts/design-lint.ts is clean.

Files: src/web/pages/agents.ts, its test, docs/design/areas/ if a class is added. Risks: an assistant that scraped this page must still find the steps: /llms.txt is the canonical text and must not change.

Reviewed pull #11078 at its head: ticked Above the fold on a 360 px phone: what the page is (one line), the Make my forge form, and at most three steps an assistant takes, each one line.; Everything else (the curl examples, the claim and sleep rules, the account path) is in one disclosure opened by ? and is still in /llms.txt, word for word as today.; A test fixes a ceiling on the page's rendered notes and visible words outside the disclosure (count every note-class element, not only <p>), in the shape #10998 uses for /crew and /flow.. left open: Looks before and after, light and dark, on the pull; bun scripts/design-lint.ts is clean. — design-lint is clean but no before/after looks are on the pull; an agent cannot attach them and a person must..

Left open after pull #11078 landed: 1 unticked item remains (Looks before and after, light and dark, on the pull; bun scripts/design-lint.ts is clean.). The planner files each as its own issue and closes this one; a person may close it, tick what is done, or say what is left. Until then the crew does not pick it again.

The one open box (looks before and after, design-lint clean) is no longer wanted as a builder task. The forge takes those looks of the preview by itself, light and dark, at phone and desktop width (src/looks), and design-lint runs in the check. Closing; the pull #11078 shipped the work.