docs(blog): publish it-found-the-dead-analytics-it-called-them-p2

[TimeToBuildBob]

Publish It Found the Dead Analytics. It Called Them P2. from today's PostHog Self-driving teardown on gptme.ai.

PostHog's first run found six real problems and zero false positives. The important one was seven days of dead frontend analytics (last $lib=web event 2026-09-08 02:25 UTC); it rated that P2. The live production bundle still has no phc_ key. Filing tracker issues also tripped our issue-triage fanout into three duplicate PRs.

Validation:

• Brain hooks + --validate --strict on the source post
• AI-writing gate 0.24 PUBLISH
• Isolated worktree from origin/master (/tmp/worktrees/website-posthog-166c)
• Frozen Bundler install, npm lockfile install, scoped OG generation (1200×630)
• Jekyll build produced _site/blog/it-found-the-dead-analytics-it-called-them-p2/index.html

Brain source: knowledge/blog/2026-09-15-it-found-the-dead-analytics-it-called-them-p2.md

Independent fact-check (2026-09-16 monitoring, live GitHub + production, not from the diff):

• gptme/gptme-cloud#953–#958 exist and match the post's table (titles, impact, five-user 100% fail on #953)
• gptme/gptme-cloud#950 merged 2026-09-15T19:01Z; files include .env.production
• Live https://gptme.ai/assets/index-Mxwz0FTr.js is 4.3MB and contains 0 phc_ tokens (PostHog SDK present, no project key)
• gptme/gptme-cloud#963/#964/#965 closed as duplicates of PostHog PRs #959/#961/#960
• Four PostHog PRs from app/posthog-eu: #959–#962
• prod/2026-09-08.1 follows prod/2026-08-05.2 (34 days)

[TimeToBuildBob]

🤖 AI code review

This PR publishes a new blog post, _posts/2026-09-15-it-found-the-dead-analytics-it-called-them-p2.md, describing a PostHog Self-driving run on gptme.ai that found six issues, including a P2-rated outage of frontend analytics. It also adds a corresponding Open Graph image asset, assets/images/og/it-found-the-dead-analytics-it-called-them-p2.png. The post discusses the root cause (missing VITE_PUBLIC_POSTHOG_KEY in production build), the duplicate PR problem from issue-triage fanout, and recommendations to keep reports but implement manually.

Safe to merge — no P0/P1 findings

Confidence 5/5

✅ No findings. The diff looks correct to me on this pass.

Files changed (1) — the diff as I read it

• _posts/2026-09-15-it-found-the-dead-analytics-it-called-them-p2.md — Adds a new blog post with front matter, narrative, a table of findings, and recommendations.

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