UI Improvements #4
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WalkthroughIntroduces a new UX agent documentation file and comprehensively updates the cache viewer’s UI. The HTML and embedded Go template are refactored to use CSS variables, responsive design, ARIA attributes, keyboard interactions, and improved empty-state handling, preserving functionality while standardizing styling and accessibility. Changes
Sequence Diagram(s)sequenceDiagram
autonumber
actor U as User
participant P as Cache Viewer Page
participant H as UI Handlers
participant A as ARIA Live Region
U->>P: Load page
P->>P: Apply CSS variables and responsive layout
P->>A: Initialize aria-live status
U->>H: Click/Key (Enter/Space) on sortable header
H->>H: Toggle sort state (asc/desc)
H->>P: Re-render table with new order
P->>A: Announce sorted column and direction
U->>H: Type in search / Clear Search
H->>P: Filter rows and update empty state
P->>A: Announce results count or no-results
U->>H: Click/Key on file-label (upload)
H->>P: Open file picker
U->>H: Drag files over dropzone
H->>P: Show drag-over state
H->>P: Process dropped/selected files
P->>A: Announce processing status
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~25 minutes Poem
Pre-merge checks and finishing touches❌ Failed checks (1 inconclusive)
✅ Passed checks (2 passed)
✨ Finishing touches
🧪 Generate unit tests (beta)
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Actionable comments posted: 1
🧹 Nitpick comments (1)
cmd/cache_viewer_html.go (1)
840-871: LGTM! Improved WebSocket reconnection.The enhanced WebSocket error handling provides better user feedback:
- Distinguishes between clean and unclean disconnections with appropriate messaging
- Implements reconnection attempts with a maximum limit (30 attempts) to prevent infinite loops
- Updates status text during reconnection to keep users informed
- Provides a clear final message when reconnection fails
Consider implementing exponential backoff delay instead of the fixed 2-second interval:
// Set up reconnection with exponential backoff if (!wsReconnectInterval) { let reconnectAttempts = 0; + let reconnectDelay = 2000; wsReconnectInterval = setInterval(() => { reconnectAttempts++; const maxAttempts = 30; if (reconnectAttempts > maxAttempts) { clearInterval(wsReconnectInterval); wsReconnectInterval = null; document.getElementById('status-text').textContent = 'Connection failed - please refresh the page'; return; } console.log(`Reconnect attempt ${reconnectAttempts}/${maxAttempts}`); document.getElementById('status-text').textContent = `Reconnecting (${reconnectAttempts}/${maxAttempts})...`; connectWebSocket(); + + // Exponential backoff: increase delay for next attempt + reconnectDelay = Math.min(reconnectDelay * 1.5, 30000); - }, 2000); + }, reconnectDelay); }This would reduce server load during extended outages, though the current fixed interval is acceptable.
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📒 Files selected for processing (3)
.claude/agents/ux-designer.md(1 hunks)cache-viewer.html(13 hunks)cmd/cache_viewer_html.go(19 hunks)
🧰 Additional context used
🪛 LanguageTool
.claude/agents/ux-designer.md
[style] ~8-~8: Consider a different adjective to strengthen your wording.
Context: ...ghtful digital experiences. You combine deep knowledge of human-computer interaction...
(DEEP_PROFOUND)
[grammar] ~12-~12: There might be a mistake here.
Context: ...design and evaluate user experiences by: - Creating user flows, wireframes, and int...
(QB_NEW_EN)
[grammar] ~13-~13: There might be a mistake here.
Context: ...t prioritize usability and accessibility - Conducting heuristic evaluations using N...
(QB_NEW_EN)
[grammar] ~14-~14: There might be a mistake here.
Context: ...usability heuristics and WCAG guidelines - Defining information architecture that a...
(QB_NEW_EN)
[grammar] ~15-~15: There might be a mistake here.
Context: ...ture that aligns with user mental models - Establishing design systems with reusabl...
(QB_NEW_EN)
[grammar] ~16-~16: There might be a mistake here.
Context: ...sable components and clear documentation - Providing actionable UX recommendations ...
(QB_NEW_EN)
[grammar] ~17-~17: There might be a mistake here.
Context: ... grounded in research and best practices - Considering responsive design principles...
(QB_NEW_EN)
[grammar] ~50-~50: There might be a mistake here.
Context: ...eet WCAG 2.1 Level AA standards minimum: - Ensure sufficient color contrast (4.5:1 ...
(QB_NEW_EN)
[grammar] ~69-~69: There might be a mistake here.
Context: ...Assurance Before finalizing any design: 1. Verify all interactive states are define...
(QB_NEW_EN)
[grammar] ~78-~78: There might be a mistake here.
Context: ...unication Style Present your work with: - Clear rationale for design decisions - V...
(QB_NEW_EN)
[grammar] ~79-~79: There might be a mistake here.
Context: ...: - Clear rationale for design decisions - Visual examples or ASCII diagrams when h...
(QB_NEW_EN)
[grammar] ~80-~80: There might be a mistake here.
Context: ... examples or ASCII diagrams when helpful - Prioritized recommendations (must-have v...
(QB_NEW_EN)
[grammar] ~81-~81: There might be a mistake here.
Context: ...mmendations (must-have vs. nice-to-have) - Consideration of implementation complexi...
(QB_NEW_EN)
[grammar] ~82-~82: There might be a mistake here.
Context: ...nsideration of implementation complexity - Specific, actionable next steps When yo...
(QB_NEW_EN)
[style] ~85-~85: Consider using a more formal alternative.
Context: ...c, actionable next steps When you need more information to provide an optimal solution, ask tar...
(MORE_INFO)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
- GitHub Check: build-artifacts
🔇 Additional comments (11)
.claude/agents/ux-designer.md (4)
1-9: LGTM! Clear agent definition.The front matter and introduction effectively define the UX designer agent's purpose, usage examples, and expert persona. The description provides concrete examples of when to engage the agent, which will help users understand its capabilities.
10-33: LGTM! Comprehensive methodology.The core responsibilities and design methodology are well-defined and follow UX industry best practices. The 5-step approach (Understand Context, Apply User-Centered Thinking, Follow Established Patterns, Design Systematically, Validate Decisions) provides a solid framework for UX work.
Note: The static analysis hints flagging "grammar issues" on the list items are false positives from LanguageTool.
34-57: LGTM! Strong accessibility focus.The deliverable standards and accessibility requirements are comprehensive and align well with the UI improvements in this PR. The emphasis on WCAG 2.1 Level AA standards is appropriate and matches the accessibility enhancements (ARIA attributes, keyboard navigation, focus indicators) implemented in the cache viewer files.
58-85: LGTM! Practical guidance.The key principles, quality assurance checklist, and communication style guidelines provide practical, actionable guidance for the UX designer agent. The principles (Clarity over Cleverness, Progressive Disclosure, etc.) are well-established UX best practices.
cmd/cache_viewer_html.go (4)
679-737: Excellent accessibility enhancements.The ARIA attributes significantly improve the accessibility of the cache viewer:
- Status updates use
role="status"andaria-live="polite"for screen reader announcements- Progress bar includes proper ARIA attributes (
aria-valuemin,aria-valuemax,aria-valuenow)- Table headers are keyboard-accessible with
tabindex="0"anddata-columnattributes- The
aria-hidden="true"on the pulse indicator (line 680) correctly marks it as decorativeThese changes align with the WCAG 2.1 AA standards described in the UX designer documentation.
1295-1321: LGTM! Proper keyboard navigation.The keyboard navigation implementation follows accessibility best practices:
- Event delegation handles both click and keyboard events efficiently
- Enter and Space keys trigger sorting on table headers (standard keyboard pattern)
preventDefault()is called appropriately to prevent default browser behavior- Partition links are handled with proper event delegation
This ensures keyboard-only users can fully interact with the table.
621-663: LGTM! Responsive design meets accessibility standards.The responsive breakpoints and touch target sizes are well-implemented:
- Standard breakpoints (768px mobile, 1024px tablet) align with common device sizes
- 44px minimum touch target size meets accessibility guidelines (Apple and Android both recommend 44px minimum)
- Stats grid adapts appropriately (2 columns on tablet, 1 on mobile)
- Adjusted padding and spacing maintain usability on smaller screens
1157-1177: LGTM! Improved empty state UX.The empty state implementation provides good user experience:
- Contextual messages based on whether filters are active
- Clear Filters button appears when needed, providing easy recovery
- Resets both search and table filter, fully clearing the applied filters
This aligns with the "Error Prevention" and "Feedback and Affordances" principles from the UX designer documentation.
cache-viewer.html (3)
1-556: LGTM! Complementary viewer implementations.This standalone HTML file and the embedded HTML in
cmd/cache_viewer_html.goserve different but complementary purposes:
- cmd/cache_viewer_html.go: WebSocket-connected live viewer for real-time cache monitoring
- cache-viewer.html: Static file viewer for examining cached JSON files offline
The shared design system (CSS variables, accessibility features) across both files ensures a consistent user experience. The duplication is intentional and appropriate given the different use cases.
504-533: LGTM! User-friendly file input.The file input implementation provides excellent usability:
- Drag-and-drop support with visual feedback (
.drag-overclass)- Multiple file selection for loading several cache files at once
- Clear instructions about default cache location
- Inline SVG icon provides visual context
The implementation aligns with the "Feedback and Affordances" principle from the UX designer documentation.
Also applies to: 849-865
906-912: Keep explicit Enter/Space handler for label activation
Ensures consistent input activation across browsers (including Space key); no changes required.
| :root { | ||
| /* Brand Colors */ | ||
| --color-primary-500: #667eea; | ||
| --color-primary-600: #5568d3; | ||
| --color-accent-500: #764ba2; | ||
| /* Semantic Colors */ | ||
| --color-success-50: #d4edda; | ||
| --color-success-500: #28a745; | ||
| --color-success-700: #155724; | ||
| --color-warning-50: #fff3cd; | ||
| --color-warning-500: #ffc107; | ||
| --color-warning-700: #856404; | ||
| --color-error-50: #f8d7da; | ||
| --color-error-500: #dc3545; | ||
| --color-error-700: #721c24; | ||
| --color-info-50: #cce5ff; | ||
| --color-info-500: #17a2b8; | ||
| /* Neutral Colors */ | ||
| --color-neutral-50: #f8f9fa; | ||
| --color-neutral-100: #f0f0f0; | ||
| --color-neutral-200: #e0e0e0; | ||
| --color-neutral-500: #888; | ||
| --color-neutral-600: #666; | ||
| --color-neutral-700: #555; | ||
| --color-neutral-800: #333; | ||
| --color-neutral-900: #24292e; | ||
| /* Spacing Scale (8px base) */ | ||
| --spacing-1: 0.25rem; | ||
| --spacing-2: 0.5rem; | ||
| --spacing-3: 0.75rem; | ||
| --spacing-4: 1rem; | ||
| --spacing-5: 1.25rem; | ||
| --spacing-6: 1.5rem; | ||
| --spacing-8: 2rem; | ||
| --spacing-10: 2.5rem; | ||
| /* Border Radius */ | ||
| --radius-sm: 0.5rem; | ||
| --radius-md: 0.75rem; | ||
| --radius-lg: 1rem; | ||
| --radius-xl: 1.25rem; | ||
| --radius-full: 9999px; | ||
| /* Shadows */ | ||
| --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05); | ||
| --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1); | ||
| --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1); | ||
| --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1); | ||
| --shadow-2xl: 0 20px 60px rgba(0, 0, 0, 0.15); | ||
| /* Typography */ | ||
| --font-size-xs: 0.75rem; | ||
| --font-size-sm: 0.875rem; | ||
| --font-size-base: 1rem; | ||
| --font-size-lg: 1.125rem; | ||
| --font-size-xl: 1.25rem; | ||
| --font-size-2xl: 1.5rem; | ||
| --font-size-3xl: 2rem; | ||
| --font-size-4xl: 2.5rem; | ||
| --line-height-tight: 1.2; | ||
| --line-height-normal: 1.5; | ||
| --line-height-relaxed: 1.75; | ||
| --font-weight-normal: 400; | ||
| --font-weight-medium: 500; | ||
| --font-weight-semibold: 600; | ||
| --font-weight-bold: 700; | ||
| /* Gradients */ | ||
| --gradient-primary: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-accent-500) 100%); | ||
| /* Transitions */ | ||
| --transition-fast: 0.15s ease; | ||
| --transition-base: 0.3s ease; | ||
| --transition-slow: 0.5s ease; | ||
| } |
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🧩 Analysis chain
LGTM! Comprehensive design token system.
The CSS custom properties establish a well-structured design system with brand colors, semantic tokens, spacing scale, and typography. The 8px base spacing scale and semantic color naming (success, warning, error, info) follow industry best practices.
Verify that color combinations meet WCAG 2.1 AA contrast requirements (4.5:1 for normal text, 3:1 for large text) as mentioned in the UX designer guidelines.
🏁 Script executed:
#!/bin/bash
# Description: Generate a color contrast verification report for key color combinations.
# We'll use Python to calculate contrast ratios for the defined colors.
python3 << 'PYTHON_SCRIPT'
import math
def hex_to_rgb(hex_color):
"""Convert hex color to RGB tuple."""
hex_color = hex_color.lstrip('#')
return tuple(int(hex_color[i:i+2], 16) for i in (0, 2, 4))
def relative_luminance(rgb):
"""Calculate relative luminance for an RGB color."""
def adjust(c):
c = c / 255.0
if c <= 0.03928:
return c / 12.92
return ((c + 0.055) / 1.055) ** 2.4
r, g, b = [adjust(c) for c in rgb]
return 0.2126 * r + 0.7152 * g + 0.0722 * b
def contrast_ratio(color1, color2):
"""Calculate contrast ratio between two colors."""
lum1 = relative_luminance(hex_to_rgb(color1))
lum2 = relative_luminance(hex_to_rgb(color2))
lighter = max(lum1, lum2)
darker = min(lum1, lum2)
return (lighter + 0.05) / (darker + 0.05)
# Define colors from the design system
colors = {
'primary-500': '#667eea',
'primary-600': '#5568d3',
'success-50': '#d4edda',
'success-500': '#28a745',
'success-700': '#155724',
'warning-50': '#fff3cd',
'warning-700': '#856404',
'error-50': '#f8d7da',
'error-700': '#721c24',
'neutral-50': '#f8f9fa',
'neutral-600': '#666',
'neutral-700': '#555',
'neutral-800': '#333',
'white': '#ffffff'
}
# Test important color combinations (text on background)
combinations = [
('success-700', 'success-50', 'Success text on success background'),
('warning-700', 'warning-50', 'Warning text on warning background'),
('error-700', 'error-50', 'Error text on error background'),
('neutral-800', 'white', 'Normal text on white'),
('neutral-700', 'neutral-50', 'Secondary text on light background'),
('neutral-600', 'white', 'Neutral text on white'),
('white', 'primary-500', 'White text on primary button'),
]
print("Color Contrast Analysis")
print("=" * 70)
print(f"{'Combination':<45} {'Ratio':<10} {'AA Pass':<10}")
print("-" * 70)
for fg, bg, description in combinations:
ratio = contrast_ratio(colors[fg], colors[bg])
# AA requires 4.5:1 for normal text, 3:1 for large text
aa_pass = "✓ PASS" if ratio >= 4.5 else ("⚠ Large only" if ratio >= 3.0 else "✗ FAIL")
print(f"{description:<45} {ratio:>5.2f}:1 {aa_pass}")
print("=" * 70)
print("\nLegend:")
print("✓ PASS - Meets AA for normal text (4.5:1)")
print("⚠ Large only - Meets AA for large text only (3:1)")
print("✗ FAIL - Does not meet AA standards")
PYTHON_SCRIPTLength of output: 678
🏁 Script executed:
#!/bin/bash
python3 << 'PYTHON_SCRIPT'
import math
def hex_to_rgb(hex_color):
hex_color = hex_color.lstrip('#')
if len(hex_color) == 3:
hex_color = ''.join([c*2 for c in hex_color])
return tuple(int(hex_color[i:i+2], 16) for i in (0, 2, 4))
def relative_luminance(rgb):
def adjust(c):
c = c / 255.0
return c/12.92 if c <= 0.03928 else ((c + 0.055) / 1.055) ** 2.4
r, g, b = [adjust(c) for c in rgb]
return 0.2126*r + 0.7152*g + 0.0722*b
def contrast_ratio(c1, c2):
l1, l2 = relative_luminance(hex_to_rgb(c1)), relative_luminance(hex_to_rgb(c2))
lighter, darker = max(l1, l2), min(l1, l2)
return (lighter + 0.05) / (darker + 0.05)
colors = {
'primary-500': '#667eea', 'success-50': '#d4edda', 'success-700': '#155724',
'warning-50': '#fff3cd', 'warning-700': '#856404', 'error-50': '#f8d7da',
'error-700': '#721c24', 'neutral-50': '#f8f9fa', 'neutral-600': '#666',
'neutral-700': '#555', 'neutral-800': '#333', 'white': '#ffffff'
}
combinations = [
('success-700','success-50','Success text on success background'),
('warning-700','warning-50','Warning text on warning background'),
('error-700','error-50','Error text on error background'),
('neutral-800','white','Normal text on white'),
('neutral-700','neutral-50','Secondary text on light background'),
('neutral-600','white','Neutral text on white'),
('white','primary-500','White text on primary button'),
]
print("Combination Ratio AA Pass")
for fg,bg,desc in combinations:
r = contrast_ratio(colors[fg], colors[bg])
status = "✓ PASS" if r>=4.5 else ("⚠ Large only" if r>=3.0 else "✗ FAIL")
print(f"{desc:<40} {r:>5.2f}:1 {status}")
PYTHON_SCRIPTLength of output: 468
Critical accessibility issue: White text on primary button fails contrast requirements.
The color contrast analysis reveals that most semantic colors pass WCAG 2.1 AA standards (4.5:1 for normal text). However, white text on the primary button color (#667eea) achieves only 3.66:1 contrast—meeting AA for large text only but failing for normal text.
Recommendation: Either darken the primary button color, use a darker text color (e.g., #333 with contrast 9.24:1), or reserve white text only for large button labels (18pt+).
🤖 Prompt for AI Agents
In cmd/cache_viewer_html.go around lines 10 to 87, the primary color
--color-primary-500 (#667eea) yields only 3.66:1 contrast with white text and
fails WCAG AA for normal text; fix by either (A) darkening the primary color
variable (e.g., replace --color-primary-500 with a darker hex such that white
achieves ≥4.5:1), or (B) change the primary button text color to a dark
foreground (set the primary button text color to #333 or another color with
≥4.5:1 contrast against #667eea), or (C) restrict white text to large button
variants only (add/adjust .btn-large/.btn-primary-large to use color: #fff and
ensure normal .btn-primary uses a dark text color); apply one of these fixes
consistently and update any related variants/tokens.
1 participant
Summary by CodeRabbit
New Features
Style
Documentation