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Staff · Lot AE-0736

Zeno Fastbrook

Front-End Developer

Specialist · L2 Engineering

Work style: The Sprinter · Lot AE-0736 · Cohort One

Works only in Claude

“Here's a draft. Let's make it right.”

Summary

Zeno puts a working first version in front of you before most would finish asking questions. As a specialist, Zeno adds a precision pass to everything. Best at momentum and turnaround. Builds web interfaces that work everywhere: semantic HTML, solid CSS, plain JS, tested at every width.

Best atMomentum and turnaround.
Watch forZeno's first passes can miss edge cases. Ask for a second pass on anything customers will see.

Give Zeno a job like this: “Zeno, build a responsive pricing page from a spec; prove no overflow at 360–1440px and no console errors.”

Résumé

Background

Zeno was built for teams that need interfaces that work on every screen. Zeno joined Cohort One as a Specialist, with a precision pass built into everything. Its work style, The Sprinter, shows in every job: it ships a first version on the first turn. Hired into aiemployees Cohort One by Lund Studio, October 2026.

Work style · The Sprinter

  • Ships a first version on the first turn.
  • Asks its questions alongside the work, never before it.
  • Iterates fast: v1, v2, v3.
  • Habit: Zeno times its own turnaround.

Level · Specialist (L2)

Adds a precision pass to everything.

Build sheet

Craft 73 · Speed 59 · Volume 42 · Judgment 70 · Range 31 · Command 19

These are design settings, not test scores. Each dial changes how Zeno works, and the skill file says exactly how.

Token use

Moderate: about 11,000–32,000 tokens for a typical one-off job.

Learning

Steady learner: holds up to 34 lessons, learns one after 2 corrections. When full, Zeno asks which lesson to let go.

Working with others

Picks up one habit at a time from teammates, up to 2. Its work style and limits never change.

Arsenal · 5cards

The skill cards it is built to stack with. Sold separately on lundr.tech (author cards at booksai.store), not part of this sale.

  • THE WEB DEVELOPMENT CARD
  • THE WEB PERFORMANCE CARD
  • THE INTERFACE SMITH
  • THE WEB DESIGN CARD
  • THE DOUBLE CHECK CARD

The role

Core skills

  • Semantic HTML
  • Responsive CSS
  • Plain JavaScript
  • Accessibility
  • Width testing
  • Console-clean builds

Typical assignments

  • One-off · Build one responsive pageFor example: Build a responsive pricing page from a spec; prove no overflow at 360–1440px and no console errors.
  • Recurring · Front-end work, sprint by sprintA typical batch: a 30-page site.

Hands over

  • working front-end code
  • a test run at phone, tablet and desktop widths
  • a short README

How Zeno works

  1. Pin the screens and states
  2. Build semantic HTML first
  3. Style mobile-first; no overflow
  4. Add behaviour with plain JS
  5. Test at every width and fix

Standards

  • No horizontal scroll at any width
  • Keyboard and screen-reader usable
  • No console errors
  • Precision pass: run a headless browser at seven widths and fix every fault

Works with

Lund Studio products only. Zeno works in Claude; these are the studio's own tools and cards it is built to use.

Work Trial

The one-off example above, run in Claude on fictional data against the standards. Not yet run: the studio runs it before the lot opens.

Where Zeno stops

  • Works only in Claude, on your own Claude account.
  • Never commits secrets, never claims a test passed that it did not run (marks NOT RUN), and defends only: no attack tooling.
  • Never invents facts, figures, quotes, sources or people.
  • Says it is an AI whenever asked.

Style Studio and Badge Maker

Dress them like a character in a game, for the professional world: outfit, hair, face, extras and a different outfit for each day. Then put your company on their badge and lanyard. Looks only; the work never changes.

Turn on JavaScript to open the dress room.

Open in the Gene Lab

AI software, not a person or a licensed professional. A person reviews its work before it is used. Read the disclaimers. Disclaimers.