docs(openspec): add web ui spacing/typography proposal, spec, tasks and audit

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# SDD Proposal: Web UI Spacing, Typography & Visual Rhythm Rework
## Status
**Phase:** proposal
**Date:** 2026-06-16
**Owner:** el Gentleman
**Based on:** Scout audit `ui-audit-spacing-typography.md`
---
## User Story
As a Headquarter user, I want the web UI to feel consistent, readable, and polished across desktop and mobile, so that I can navigate and manage workspaces, projects, and sessions without fighting cramped layouts, broken mobile views, or inconsistent spacing.
---
## Problem Statement
A comprehensive audit of `apps/web/src` found systemic spacing, typography, margin, and visual-hierarchy issues:
- **Missing primitive styles**: dozens of widely-used class names (`.btn`, `.form-error`, `.alert`, `.badge`, `.mobile-detail-*`, etc.) are referenced in TSX but have no CSS rules, causing broken or unstyled UI on multiple pages.
- **Completely unstyled mobile detail view**: `mobile-detail-view.tsx` ships layout classes that do not exist in any stylesheet.
- **Mobile layout collisions**: the bottom nav, start-tool FAB, and mobile edit sheets can overlap and do not account for safe-area insets.
- **Inconsistent design tokens**: the token scale lacks border-radius, line-height, shadow, touch-target, and nav-height primitives. Mixed `px`/`rem`/`em` values and inline `style={{...}}` blocks bypass the token system.
- **Duplicated systems**: two modal/dialog implementations, duplicated `.form-field`/`.form-group` patterns, duplicated status-badge/chip styles, and overlapping breakpoints (`767px`, `768px`, `860px`).
- **Heavy inline-style usage**: editors and sidebars embed layout CSS directly in JSX, making responsive overrides and theming impossible.
This is not a single bug; it is a design-system hygiene issue that affects nearly every page.
---
## Goals
1. Establish a complete, single-source-of-truth token scale for spacing, typography, radius, shadow, line-height, touch targets, and layout heights.
2. Add every missing primitive component style so that referenced classes actually render correctly.
3. Fix mobile layout collisions by deriving FAB/bottom-sheet offsets from a shared nav-height token.
4. Replace ad-hoc `px`/`rem` values and inline styles with token-based utility classes where feasible.
5. Consolidate duplicated patterns: one modal/dialog system, one form-field pattern, one status-badge family, one card family.
6. Standardize breakpoints to the existing token scale (`--bp-sm`, `--bp-md`, `--bp-lg`, `--bp-xl`).
7. Leave the UI visually improved without changing behavior or user-facing features.
---
## Non-Goals
- No new user-facing features or workflows.
- No changes to backend APIs, database schema, or authentication.
- No redesign of the information architecture or navigation structure.
- No replacement of Tailwind or CSS-modules; we stay in the existing global-CSS architecture.
- No runtime theme-engine rewrite; light/dark tokens remain as-is.
---
## High-Level Approach
Split the work into three reviewable passes to stay under the 400-line review budget:
### Pass 1: Foundations (P0)
- Expand `tokens.css` with missing primitives.
- Add missing primitive classes to `global.css`/`utilities.css` (buttons, alerts, errors, badges, form inputs, loading states, checkbox labels, hints, mobile detail view, etc.).
- Introduce `--mobile-nav-height` and fix FAB/bottom-sheet/shell-content collisions.
- Fix the most critical inline font-size violations (`0.7rem` → tokens).
- Add focused `:focus` visibility to interactive controls.
### Pass 2: Component Cleanup (P1)
- Refactor the highest-volume inline-style offenders into utility classes:
- `manifest-editor.tsx`
- `ConfigProfileEditorPanel.tsx`
- `ToolTypeEditorPanel.tsx`
- `ToolTypeListSidebar.tsx`
- `ConfigProfileListSidebar.tsx`
- `git-mount-editor.tsx`
- Replace hardcoded `280px` sidebars with `--sidebar-width` token.
- Unify `.form-field`/`.form-group` and migrate callers.
- Consolidate status badges/chips into a single `.status-badge` family.
### Pass 3: Consolidation & Polish (P2)
- Deprecate `.modal-*` in favor of `.dialog-*` and migrate callers.
- Consolidate card patterns across page CSS files into `global.css` modifiers.
- Standardize breakpoints to `--bp-*` tokens and remove the `860px` one-off.
- Add token documentation and a lightweight review checklist.
---
## Open Questions
1. **Which pass should include the mobile detail view styles?**
- Recommendation: Pass 1, because it is currently broken.
2. **Should we keep the existing `.utilities.css` naming convention or introduce BEM-style modifiers (`.card--elevated`, `.status-badge--error`)?**
- Recommendation: introduce BEM-style modifiers only for the new consolidated families; keep existing utilities untouched to minimize churn.
3. **Is the terminal page's hardcoded dark palette acceptable long-term, or should it become theme-aware?**
- Recommendation: keep terminal colors hardcoded for now; only convert spacing to tokens.
4. **Should we add a lint rule to block new inline `style={{...}}` layout declarations?**
- Recommendation: add a code-review checklist in Pass 3, not a blocking lint rule, to avoid false positives.
---
## Risks
| Risk | Severity | Mitigation |
|------|----------|------------|
| Large diff touching many files | High | Split into three chained PRs; each under 400 changed lines. |
| Visual regressions on pages not manually tested | Medium | Rely on typecheck/lint for TSX; do visual spot-checks on representative pages. |
| Inline-style refactor breaks dynamic values | Medium | Only refactor static layout styles; keep dynamic values (computed positions) in JS. |
| Token changes affect existing components unexpectedly | Medium | Add new tokens only; do not rename existing tokens without a compat layer. |
| Mobile safe-area behavior varies across devices | Medium | Use `env(safe-area-inset-bottom, 0px)` with a sensible fallback. |
---
## Effort Estimate
| Pass | Focus | Est. Files | Est. Lines | Complexity |
|------|-------|------------|------------|------------|
| Pass 1: Foundations | tokens, missing primitives, mobile nav/FAB | 46 | ~400 | Medium |
| Pass 2: Component Cleanup | inline styles, sidebars, forms, badges | 1014 | ~600 | High |
| Pass 3: Consolidation | modals, cards, breakpoints, docs | 812 | ~400 | Medium |
| **Total** | | **2232** | **~1400** | **High** |
**Review workload forecast:** Each pass should stay near or below the 400-line review budget. Pass 2 may need to be split further if it grows.
---
## Next Recommended Phase
**Spec** — detail the exact token additions, primitive class API, mobile-nav height calculation, and the migration path for inline styles.
Should I proceed to spec?