fix(graph): resolve color fallback so SVG nodes don't render black - #94

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fix(graph): resolve color fallback so SVG nodes don't render black#94
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@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez commented May 5, 2026•
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Summary

  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.

Test plan

  • npx tsc --noEmit in frontend/ — clean
  • Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  • Manual: confirm subject-root nodes look noticeably larger than concept nodes
  • Manual: same course id always maps to the same palette entry across screens

Note

A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.

🤖 Generated with Claude Code

@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
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Folded into #93 — keeping rename feature and graph color fix in a single PR.

@AndresL230
AndresL230 deleted the fix/graph-color-fallback branch June 27, 2026 04:21
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
fix(graph): resolve color fallback so SVG nodes don't render black - #94
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Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
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fix(graph): resolve color fallback so SVG nodes don't render black#94
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
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@Jose-Gael-Cruz-Lopez
@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez
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May 5, 2026•

edited

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Summary
  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.
Test plan
  • npx tsc --noEmit in frontend/ — clean
  •  Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  •  Manual: confirm subject-root nodes look noticeably larger than concept nodes
  •  Manual: same course id always maps to the same palette entry across screens
Note
A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.
🤖 Generated with Claude Code
@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Please see our FAQ for further information.
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: 043bb35c-b363-4768-a23e-25a719776d3d
📥 Commits
Reviewing files that changed from the base of the PR and between 3fb23d3 and 84bb0e4.
📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
✨ Finishing Touches
🧪 Generate unit tests (beta)
  •  Create PR with unit tests
  •  Commit unit tests in branch fix/graph-color-fallback
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.
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View logs		frontend84bb0e4Commit Preview URL

Branch Preview URL		May 05 2026, 10:19 PM
@Jose-Gael-Cruz-Lopez
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May 5, 2026

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Folded into #93 — keeping rename feature and graph color fix in a single PR.
@AndresL230
AndresL230
deleted the

fix/graph-color-fallback

branch
June 27, 2026 04:21
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(graph): resolve color fallback so SVG nodes don't render black - #94
Closed
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
Closed
fix(graph): resolve color fallback so SVG nodes don't render black#94
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
Conversation
@Jose-Gael-Cruz-Lopez
@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez
commented
May 5, 2026•

edited

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Summary
  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.
Test plan
  • npx tsc --noEmit in frontend/ — clean
  •  Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  •  Manual: confirm subject-root nodes look noticeably larger than concept nodes
  •  Manual: same course id always maps to the same palette entry across screens
Note
A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.
🤖 Generated with Claude Code
@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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@Jose-Gael-Cruz-Lopez has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 57 minutes and 39 seconds before requesting another review.
To keep reviews running without waiting, you can enable usage-based add-on for your organization. This allows additional reviews beyond the hourly cap. Account admins can enable it under billing.
⌛ How to resolve this issue?
After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.
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🚦 How do rate limits work?
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Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.
Please see our FAQ for further information.
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: 043bb35c-b363-4768-a23e-25a719776d3d
📥 Commits
Reviewing files that changed from the base of the PR and between 3fb23d3 and 84bb0e4.
📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
✨ Finishing Touches
🧪 Generate unit tests (beta)
  •  Create PR with unit tests
  •  Commit unit tests in branch fix/graph-color-fallback
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.
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View logs		frontend84bb0e4Commit Preview URL

Branch Preview URL		May 05 2026, 10:19 PM
@Jose-Gael-Cruz-Lopez
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May 5, 2026

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Folded into #93 — keeping rename feature and graph color fix in a single PR.
@AndresL230
AndresL230
deleted the

fix/graph-color-fallback

branch
June 27, 2026 04:21
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(graph): resolve color fallback so SVG nodes don't render black - #94
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Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
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fix(graph): resolve color fallback so SVG nodes don't render black#94
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
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@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez
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Summary
  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.
Test plan
  • npx tsc --noEmit in frontend/ — clean
  •  Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  •  Manual: confirm subject-root nodes look noticeably larger than concept nodes
  •  Manual: same course id always maps to the same palette entry across screens
Note
A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.
🤖 Generated with Claude Code
@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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@Jose-Gael-Cruz-Lopez has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 57 minutes and 39 seconds before requesting another review.
To keep reviews running without waiting, you can enable usage-based add-on for your organization. This allows additional reviews beyond the hourly cap. Account admins can enable it under billing.
⌛ How to resolve this issue?
After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.
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🚦 How do rate limits work?
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Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.
Please see our FAQ for further information.
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: 043bb35c-b363-4768-a23e-25a719776d3d
📥 Commits
Reviewing files that changed from the base of the PR and between 3fb23d3 and 84bb0e4.
📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
✨ Finishing Touches
🧪 Generate unit tests (beta)
  •  Create PR with unit tests
  •  Commit unit tests in branch fix/graph-color-fallback
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.
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View logs		frontend84bb0e4Commit Preview URL

Branch Preview URL		May 05 2026, 10:19 PM
@Jose-Gael-Cruz-Lopez
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May 5, 2026

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Folded into #93 — keeping rename feature and graph color fix in a single PR.
@AndresL230
AndresL230
deleted the

fix/graph-color-fallback

branch
June 27, 2026 04:21
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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fix(graph): resolve color fallback so SVG nodes don't render black - #94
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fix/graph-color-fallback
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fix(graph): resolve color fallback so SVG nodes don't render black#94
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
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@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez
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Summary
  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.
Test plan
  • npx tsc --noEmit in frontend/ — clean
  •  Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  •  Manual: confirm subject-root nodes look noticeably larger than concept nodes
  •  Manual: same course id always maps to the same palette entry across screens
Note
A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.
🤖 Generated with Claude Code
@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Run ID: 043bb35c-b363-4768-a23e-25a719776d3d
📥 Commits
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📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
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Folded into #93 — keeping rename feature and graph color fix in a single PR.
@AndresL230
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deleted the

fix/graph-color-fallback

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June 27, 2026 04:21
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(graph): resolve color fallback so SVG nodes don't render black - #94
Closed
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
Closed
fix(graph): resolve color fallback so SVG nodes don't render black#94
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
mainfrom 
fix/graph-color-fallback
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@Jose-Gael-Cruz-Lopez
@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez
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May 5, 2026•

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Summary
  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.
Test plan
  • npx tsc --noEmit in frontend/ — clean
  •  Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  •  Manual: confirm subject-root nodes look noticeably larger than concept nodes
  •  Manual: same course id always maps to the same palette entry across screens
Note
A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.
🤖 Generated with Claude Code
@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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@Jose-Gael-Cruz-Lopez has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 57 minutes and 39 seconds before requesting another review.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: 043bb35c-b363-4768-a23e-25a719776d3d
📥 Commits
Reviewing files that changed from the base of the PR and between 3fb23d3 and 84bb0e4.
📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
✨ Finishing Touches
🧪 Generate unit tests (beta)
  •  Create PR with unit tests
  •  Commit unit tests in branch fix/graph-color-fallback
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.
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StatusNameLatest CommitPreview URLUpdated (UTC)
✅ Deployment successful! 
View logs		frontend84bb0e4Commit Preview URL

Branch Preview URL		May 05 2026, 10:19 PM
@Jose-Gael-Cruz-Lopez
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Folded into #93 — keeping rename feature and graph color fix in a single PR.
@AndresL230
AndresL230
deleted the

fix/graph-color-fallback

branch
June 27, 2026 04:21
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(graph): resolve color fallback so SVG nodes don't render black - #94
Closed
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
mainfrom 
fix/graph-color-fallback
Closed
fix(graph): resolve color fallback so SVG nodes don't render black#94
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
mainfrom 
fix/graph-color-fallback
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@Jose-Gael-Cruz-Lopez
@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez
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May 5, 2026•

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Summary
  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.
Test plan
  • npx tsc --noEmit in frontend/ — clean
  •  Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  •  Manual: confirm subject-root nodes look noticeably larger than concept nodes
  •  Manual: same course id always maps to the same palette entry across screens
Note
A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.
🤖 Generated with Claude Code
@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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@Jose-Gael-Cruz-Lopez has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 57 minutes and 39 seconds before requesting another review.
To keep reviews running without waiting, you can enable usage-based add-on for your organization. This allows additional reviews beyond the hourly cap. Account admins can enable it under billing.
⌛ How to resolve this issue?
After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.
We recommend that you space out your commits to avoid hitting the rate limit.
🚦 How do rate limits work?
CodeRabbit enforces hourly rate limits for each developer per organization.
Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.
Please see our FAQ for further information.
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: 043bb35c-b363-4768-a23e-25a719776d3d
📥 Commits
Reviewing files that changed from the base of the PR and between 3fb23d3 and 84bb0e4.
📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
✨ Finishing Touches
🧪 Generate unit tests (beta)
  •  Create PR with unit tests
  •  Commit unit tests in branch fix/graph-color-fallback
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.
❤️ Share
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The latest updates on your project. Learn more about integrating Git with Workers.
StatusNameLatest CommitPreview URLUpdated (UTC)
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View logs		frontend84bb0e4Commit Preview URL

Branch Preview URL		May 05 2026, 10:19 PM
@Jose-Gael-Cruz-Lopez
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May 5, 2026

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Folded into #93 — keeping rename feature and graph color fix in a single PR.
@AndresL230
AndresL230
deleted the

fix/graph-color-fallback

branch
June 27, 2026 04:21
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
fix(graph): resolve color fallback so SVG nodes don't render black - #94
Closed
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
mainfrom 
fix/graph-color-fallback
Closed
fix(graph): resolve color fallback so SVG nodes don't render black#94
Jose-Gael-Cruz-Lopez wants to merge 1 commit into
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fix/graph-color-fallback
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@Jose-Gael-Cruz-LopezJose-Gael-Cruz-Lopez
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May 5, 2026•

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Summary
  • SVG presentation attributes (fill=) don't resolve CSS custom properties — when the backend doesn't supply a per-course color, the var(--c-sage) fallback was rendering black.
  • Adds a deterministic hex palette + paletteFor(seed) helper in lib/data.ts and wires it into the Dashboard, Tree, and KnowledgeGraph fallback paths.
  • Bumps subject-root node radius from 22 → 28 so course family centers read distinctly from concept nodes.
Test plan
  • npx tsc --noEmit in frontend/ — clean
  •  Manual: load Dashboard / Tree with a course that has no course_color and confirm nodes render with a stable hue (not black)
  •  Manual: confirm subject-root nodes look noticeably larger than concept nodes
  •  Manual: same course id always maps to the same palette entry across screens
Note
A sibling fallback exists in screens/Learn.tsx#apiToGraphNode. It's intentionally left untouched here because PR #93 is in flight on that file. Once both land, a one-liner can switch Learn's fallback to paletteFor(...) for consistency.
🤖 Generated with Claude Code
@Jose-Gael-Cruz-Lopez@claude
fix(graph): resolve color fallback so SVG nodes don't render black
84bb0e4
SVG presentation attributes (fill=) don't resolve CSS custom properties,
so a missing per-course color fell through to var(--c-sage) and rendered
as black. Adds a deterministic hex palette + paletteFor(seed) helper and
wires it into the Dashboard, Tree, and KnowledgeGraph fallbacks. Also
bumps subject-root radius from 22 to 28 so course family centers stand
out from concept nodes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Warning
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@Jose-Gael-Cruz-Lopez has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 57 minutes and 39 seconds before requesting another review.
To keep reviews running without waiting, you can enable usage-based add-on for your organization. This allows additional reviews beyond the hourly cap. Account admins can enable it under billing.
⌛ How to resolve this issue?
After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.
We recommend that you space out your commits to avoid hitting the rate limit.
🚦 How do rate limits work?
CodeRabbit enforces hourly rate limits for each developer per organization.
Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.
Please see our FAQ for further information.
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: 043bb35c-b363-4768-a23e-25a719776d3d
📥 Commits
Reviewing files that changed from the base of the PR and between 3fb23d3 and 84bb0e4.
📒 Files selected for processing (4)
  • frontend/src/components/KnowledgeGraph.tsx
  • frontend/src/components/screens/Dashboard.tsx
  • frontend/src/components/screens/Tree.tsx
  • frontend/src/lib/data.ts
✨ Finishing Touches
🧪 Generate unit tests (beta)
  •  Create PR with unit tests
  •  Commit unit tests in branch fix/graph-color-fallback
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.
❤️ Share
Comment @coderabbitai help to get the list of available commands and usage tips.
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StatusNameLatest CommitPreview URLUpdated (UTC)
✅ Deployment successful! 
View logs		frontend84bb0e4Commit Preview URL

Branch Preview URL		May 05 2026, 10:19 PM
@Jose-Gael-Cruz-Lopez
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May 5, 2026

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Folded into #93 — keeping rename feature and graph color fix in a single PR.
@AndresL230
AndresL230
deleted the

fix/graph-color-fallback

branch
June 27, 2026 04:21
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