feat(guide): public how-to guide + live AI model details

ui: redesign the new-construct form as a contained panel with source cards

ui: three explicit construct paths + Save gating + visible AI drafts

docs: AI item-drafting scenarios in /guide and MANUAL_TESTING.md

style: enhance topbar consistency and responsiveness across guide and product pages

feat: put invite links on hold; single brand header everywhere

feat: CAML lab branding - CCR logo, ink+teal theme, favicon, attribution

feat: Add multi-construct functionality to scoring and results in guide and product pages

refactor: enhance AdminPage overview display and improve navigation

Four-tier access model: self-governing admin, pre-login access, audit trail

Repro script: valid Python booleans + per-run filenames in instructions

Guide: click a section heading to copy a shareable deep-link

Guide: add limits + models tables, fix stale anon byte cap

Guide: add architecture + data-flow diagrams and infra/data-lifecycle notes

Guide: accounts/data now persist (Postgres); files caveat clarified

Guide: researcher quickstart, Slack feedback destination, lab-tier saved-run wording

Refine documentation and fix upload handling

Add /guide tester page and /samples demo-data downloads