Phase 0 docs 3/3: delete intentionally orphaned pages

[kylegani]

Context

Part of Phase 0 of the Agentic Cerebrium initiative: making Cerebrium fully usable by coding agents (Claude Code, Cursor, Codex, Copilot). Agents consume these docs through the Mintlify MCP server, llms.txt, and .md exports; pages that are orphaned but still fetchable feed agents stale content.

This PR is layer 3 of a 3-PR stack (one reviewable unit per layer, merge bottom-up; merging a lower layer auto-retargets the ones above):

1. Phase 0 docs 1/3: MCP proxy wiring and contextual agent config #308 MCP proxy wiring + contextual agent config
2. Phase 0 docs 2/3: content accuracy fixes (defaults, GPU tables, curl snippets, regions) #309 content accuracy fixes (defaults, GPU tables, curl snippets, regions)
3. Phase 0 docs 3/3: delete intentionally orphaned pages #310 delete intentionally orphaned pages (+ redirects)

Changes

8 pages exist in the repo but were deliberately left out of the docs.json nav (confirmed intentional). Orphaned Mintlify pages remain reachable by direct URL and by agents, so this deletes them outright:

• changelog.mdx
• getting-started/collaborating.mdx
• integrations/vercel.mdx
• other-topics/fitting-large-models-on-small-gpus.mdx
• v4/examples/aiVoiceAgents.mdx (near-exact dupe of realtime-voice-agents)
• v4/examples/langchain.mdx
• v4/examples/mistral-vllm.mdx
• v4/examples/streaming-falcon-7B.mdx

Cleanup that keeps the site consistent:

• v4/examples/featured.mdx: removed the "Advanced concepts" tab whose only two cards linked to the deleted mistral-vllm and streaming-falcon-7B pages.
• docs.json: added 5 redirects for deleted URLs with obvious surviving targets, following the repo's existing redirect patterns (aiVoiceAgents -> realtime-voice-agents, langchain -> langchain-langsmith, mistral-vllm -> openai-compatible-endpoint-vllm, streaming-falcon-7B -> featured, fitting-large-models -> introduction). The existing v3/legacy redirects already pointed AWAY from these pages, so none break.
• No redirects added for /changelog, /getting-started/collaborating, /integrations/vercel: no sensible surviving target exists, so they will 404 by design. Flag in review if any of the three should redirect somewhere instead.

Inbound-reference audit: repo-wide grep found no remaining links to any deleted page (the only two, in featured.mdx, are removed here; integrations/vercel.mdx also referenced mistral-vllm but is itself deleted).

How to test this layer

1. python3 -m json.tool docs.json > /dev/null parses.
2. On the preview deployment: the deleted URLs with redirects land on their targets; /changelog, /getting-started/collaborating, /integrations/vercel return 404; /v4/examples/featured renders without the "Advanced concepts" tab and with no broken cards.
3. grep -rn "mistral-vllm\|streaming-falcon-7B\|aiVoiceAgents\|collaborating" --include="*.mdx" . shows no links to deleted pages.

Stack position: 3 of 3 (base: kyle/phase0-docs-content). Merging this merges the layers below it.

🤖 Generated with Claude Code