docs(project-state): truth-up four stale statuses, record the batch blockers

Measured against the live site and the cron outputs today, not carried over:

- A1 (author photo) and A3 (featured strip) were still ⬜ although both shipped
  (B4 and 6e9d58b) — marked done with the evidence, /start-here left as a
  deliberate deferral.
- E3 is fully automated: the LinkedIn half was already a daily no_agent cron
  (id 35f8985f609a). 5 posts published as of today's 12:30 tick; its silence is
  not proof of work, so the output files are the record.
- E6 closed: HSTS waived by the owner ("无视吧"), re-measured still max-age=0.
  Do not re-open.
- E1: CF Web Analytics re-measured absent (0 cloudflareinsights hits, one Umami
  tag). It is an owner dashboard action — no token here can enable it and CF
  injects the beacon itself, so there is no repo change to make.
- B6 now states the real shape of the artwork work: 0 of 72 posts rolled out,
  the live site still serves the v1 images, the 3 consultant questions are
  unanswered, the rendered OG card is measured at 558 KB PNG vs 84 KB JPEG q85,
  and the promised OCR pseudo-text gate does not exist yet.

scripts/og-gen/README.md

@@ -42,6 +42,7 @@ No entry → a generic default terminal.
 - PNG (not JPG) is intentional: for flat UI/terminal art, PNG is smaller and
   sharper than JPG (see commit history).
 - The `logo-square.png` referenced lives at `public/logo-square.png`.
+
 ---
 
 ## v2 pipeline ("one art, four targets") — `render_from_art.mjs`