feat(taxonomy): expand CATEGORIES from 15 to 32 axes (C-CAT) - #3174
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Add 17 new categories to close the discovery-surface gap vs OSSInsight, whose 102 hand-curated collections give them strong SEO + topical discovery that 15 categories can't match. New axes (each with a distinct Lucide icon + hue-spread color): - Game Development, IoT & Edge, Education & Learning, Robotics, AR/VR/3D, Bio & Healthcare, Productivity & No-Code, Open Models & Datasets, Networking & Protocols, Observability, Compilers & Runtimes, Testing & QA, Documentation, Embedded Systems, Media & Streaming, Cryptography, Privacy & Surveillance Resistance. Picked by mapping the OSSInsight collection taxonomy (deep-crawl evidence cited below) onto distinct dev-tool clusters TrendingRepo already surfaces in repo metadata but doesn't yet surface as filter chips. Existing 15 categories left untouched so SEO + bookmarks stay valid; new IDs use kebab-case to match the convention. Files: - src/lib/constants.ts: append 17 new entries to CATEGORIES. - src/lib/category-icons.ts: import + register the 17 new Lucide icons in CATEGORY_ICON_MAP so getCategoryIcon() returns a valid component for every entry (was hardcoded to 10). A follow-up `scripts/classify-categories.ts` (deferred — separate PR) will batch-classify the top-1000 derived repos against the new taxonomy via NanoGPT so the new chips have real repo populations on day one rather than reading "0". Evidence: deep-crawl deltas.md → https://ossinsight.io/collections (102 hand-curated collections vs our 15 — strong SEO + discovery advantage). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This was referenced Jun 15, 2026
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Closes part of the v3 deep-crawl deltas finding that no competitor has any API/RSS/webhook surface (defensibility 3.0). 32 categories × 1 RSS feed gives 32 SEO + agent-readable surfaces; the per-category llms.txt section makes the feeds discoverable to AI agents that follow the convention. Files: - src/app/feeds/[slug].xml/route.ts (new) — dynamic [slug] = one of the 32 category ids from src/lib/constants.ts. Returns RSS 2.0 XML with proper content-type + Cache-Control: s-maxage=900, swr=3600. Falls back to an "indexing in progress" item when the classifier (PR #3185) hasn't populated repo-categories yet. - src/app/feeds/route.ts (new) — index page listing all 32 feed URLs as JSON for agent discovery. - src/app/llms.txt/route.ts (modified) — adds "Per-category RSS feeds" section generated from CATEGORIES so the file scales when the taxonomy changes again. - src/app/categories/[slug]/page.tsx (modified) — adds <link rel="alternate" type="application/rss+xml"> so feed readers can auto-discover the matching feed. - src/lib/pipeline/__tests__/feeds-routes.test.ts — RSS XML escaping (&, <, >), content-type, and at-least-one <item> shape assertions. - scripts/check-production-topology-docs.mjs — adds a llms.txt topology phrase requirement so the HOSTUP section stays accurate. No publicly stale batches: when consensus-trending is past 4h, the feed emits an "indexing in progress" item instead of stale items. Companion PRs: C-CAT #3174 (taxonomy), classify #3185 (per-repo assignments), per-category-pages #3181 (HTML landing), Toolbox #241 (ULTRA harness with the deltas evidence). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This was referenced Jun 15, 2026
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Summary
Add 17 new categories to
CATEGORIES(15 → 32) to close the discovery-surface gap vs OSSInsight, whose 102 hand-curated collections give them an SEO + topical-discovery advantage that 15 categories cannot match.Evidence (deep-crawl deltas)
From the ULTRA improvement plan crawl (1188 cells across OSSInsight + TrendShift + TrendingRepo):
New categories
Game Development · IoT & Edge · Education & Learning · Robotics · AR/VR/3D · Bio & Healthcare · Productivity & No-Code · Open Models & Datasets · Networking & Protocols · Observability · Compilers & Runtimes · Testing & QA · Documentation · Embedded Systems · Media & Streaming · Cryptography · Privacy & Surveillance Resistance.
Each entry follows the existing palette + icon convention. Colors hue-spread across Tailwind 400-700; icons distinct so no two adjacent chips collide. Existing 15 entries left untouched so prior SEO + bookmarks still resolve.
Files
src/lib/constants.ts— append 17 entries toCATEGORIES.src/lib/category-icons.ts— import + register the 17 new Lucide icons inCATEGORY_ICON_MAP. Without thisgetCategoryIcon()would return null and the new chips would render iconless.Deferred follow-up (separate PR)
scripts/classify-categories.ts— batch-classify the top-1000 derived repos against the new taxonomy via NanoGPT (Kimi-K2-Instruct) so the new chips have real repo populations on day one rather than reading "0". Tracked as a follow-up so this PR stays scoped to the taxonomy surface itself.Test plan
pnpm tsc --noEmitclean (existing.next/typeserrors unrelated)/categories— all 32 chips render with distinct icon + color/categories/game-dev) — page renders the identity card with the right Lucide icon, no console errorCompanion PRs
🤖 Generated with Claude Code