# Known Gaps

This tracker lists only patterns that are not actually covered by the canonical HTML reference. Items from the older gap list were checked against the HTML before being included here.

## Tier 1 - Fill Before Any Product UI

No open Tier 1 gaps after verification. Empty states, error states, loading states, and mobile patterns are covered in the HTML reference, so they are not tracked as gaps here (source: section 51 — Empty states; section 52 — Error states; section 53 — Loading states; section 60 — Mobile patterns).

## Tier 2 - Fill As Surfaces Hit Them

No open Tier 2 gaps after verification. Bulk actions, filter and sort drawers, drag-drop affordances, approval workflow, diff UI, anchored comments, onboarding, and audit log patterns are covered in the HTML reference, so they are not tracked as gaps here (source: section 54 — Bulk action toolbar; section 55 — Filter / sort drawer; section 56 — Drag & drop affordances; section 57 — Versioning / diff UI; section 58 — Anchored comments on documents; section 59 — Approval / sign-off workflow; section 61 — Onboarding patterns; section 62 — Audit log surface).

## Tier 3 - Construction-Domain Features

- Drawings viewer: the reference covers file rows, photo gallery link-out, and diff UI, but not a full drawing viewer with sheets, zoom, markups, overlays, and revision navigation. This is unblocked by a drawing-viewer work order tied to real drawing workflows (source: section 38 — File / document patterns; section 46 — Photo gallery; section 57 — Versioning / diff UI).
- Full Gantt: the reference covers a read-only Gantt-lite schedule strip, not editable critical-path scheduling. This is unblocked by schedule requirements from the Construction PM product scope (source: section 43 — Schedule strip).
- Estimating: the reference covers cost tables and approval pricing roles, but not estimate creation, alternates, assemblies, or takeoff workflows. This is unblocked by estimating workflow intake (source: section 45 — Cost data tables; section 59 — Approval / sign-off workflow).
- Punch list: the log system covers RFI, submittal, change order, subcontractor, and daily report logs, but not punch-list inspection, assignment, remediation, or closeout. This is unblocked by punch-list domain intake (source: section 47 — Log design system).
- Safety incidents: the reference covers daily report logs but not safety incident reporting, review, escalation, or closeout. This is unblocked by safety workflow intake (source: section 47 — Log design system).
- Site map: navigation and reference-tree patterns cover app movement and citation graphs, but not a project site map or location plan. This is unblocked by field-location requirements (source: section 31 — Navigation; section 40 — Reference tree).

## Tier 4 - Operational Patterns

- Settings patterns: the reference mentions user preferences and settings entry points, but not a full settings information architecture. This is unblocked by account, project, integration, and notification preference scope (source: section 48 — Cross-cutting; section 61 — Onboarding patterns).
- General reports and export: the reference includes local export affordances for cost tables and audit logs, but not a general report builder or export center. This is unblocked by reporting requirements (source: section 45 — Cost data tables; section 62 — Audit log surface).
- Data import: forms, files, and drag-drop cover data entry and upload affordances, but not import mapping, validation, or review. This is unblocked by ingestion and integration requirements (source: section 29 — Forms; section 38 — File / document patterns; section 56 — Drag & drop affordances).
- Print styles: the reference includes logo print fidelity, but not product print layouts for reports, RFIs, schedules, or logs. This is unblocked by printable artifact requirements (source: section 01 — Wordmark).
- Auth UI: the reference covers post-auth loading, not sign-in, invite, recovery, SSO, or access-error screens. This is unblocked by auth requirements (source: section 53 — Loading states).