Anthropic launched claude.ai/design the same week I'd been sketching a new look for this site. I did the design work in the browser, exported the handoff bundle, pointed Claude Code at it, and got a production rebuild six phases later with zero new npm dependencies.
Two open-source UniFi MCP servers existed. Neither did what I wanted. So I built a third that combines their strengths, lazy-loads per product, and ships as a Claude Code plugin you can install with two slash commands.
I reviewed an AI-generated recommendation to convert my custom agents into 'captains' that spawn parallel sub-agents. Here's what I learned about factual assessment, corrected parallel structures, sandbox constraints, and when to use this pattern (or keep it simple).
Chris Johnson·February 26, 2026·18 min read
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Part 5 of the home network dashboard build. Phase 1.1 ships the Network tab, five new surfaces, two new security signals, and 694 backend tests at merge. A 5-wave persona team caught a critical ship-blocker before merge, then in-session live verification on the deployed dashboard caught two more bugs of the exact same shape: wrong join field, silent zero, fixtures encoded the same wrong assumption. The marquee lesson is that persona-team review is necessary but not sufficient. The second line of defense is running the live system in-session, not waiting for a scheduled probe to find drift.
Part 4 of the home network dashboard build. V2 ships a Threat Intelligence tab with 6 in-house heuristics, two free public feeds (URLhaus + Hagezi), and an on-demand RDAP/IPinfo enrichment skill. 161 anomalies surfaced from 45,000 daily DNS queries on the dispatcher's first real-data run. Seven PRs, 603 backend tests, 163 Vitest, 20 Playwright at merge. The marquee story is not the feature, it is the post-merge audit: five bugs that all four CI jobs missed, all five caught only after the dashboard hit production. The gap between "tests pass" and "production works" has a shape and a price, and this post itemizes both.
Part 3 of the home network dashboard build. 11 deferred items closed in one session. Two PRs merged the same day. OpenAI Codex shipped Feature 1 phases 1.1-1.3 from a re-runnable plan doc, then hit its weekly $20 ChatGPT Plus rate limit. Claude Code picked up where Codex left off, fixed CI, closed a PII consistency gap on the new domain endpoint, and merged PR #5. The same Claude session then swept 11 more deferred items from the same plan doc into PR #6. 523 backend tests, 141 Vitest, 15 Playwright at the end. The through-line is the plan doc, not the agent that read it.
Part 1 of a multi-phase build: a single pane of glass for my UDM Pro, Pi-hole, and UniFi Protect home lab, written entirely with Claude Code. 12 parallel workstreams, four enrichment waves on top, 497 backend tests at 82.9 percent coverage, 132 frontend tests. One CRITICAL plus three HIGH security findings caught and fixed in review. The whole thing rests on the UniFi MCP, Pi-hole MCP, and persona-team patterns shipped in earlier posts; Phase 2 layers a cyberpunk skin on top of it.
