docs(ui): surface multimodal knowledge graph in help, docs, and READMEs #247

Job	Run time
Phase 2A — GitHub Action tests	15s
Shared test-utils	18s
Phase 2B — GitLab CI component	13s
Phase 1B — Docker image build	7s
Phase 3 — Communication bots	21s
Phase 4 — MCP source adapters	1m 50s
Phase 1A — Homebrew formula audit	11s
Phase 4C — Gitea E2E	1m 46s
	5m 1s

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