[EI-4.3 — PTIR Normalization]

EI-4.3 — PTIR Normalization

Status: COMPLETE
Date: 2026-08-08

Objective

Make PTIR a first-class publication identified by explicit metadata rather than legacy category membership.

Production corpus

EI-4.3 normalized 22 PTIR editions in _posts/, spanning July 28 through August 8, 2026.

Every edition now carries:

content_type: briefing
series: PTIR

Existing edition, date, title, permalink, publication state, topical tags, and body content were preserved. The legacy categories: PTIR block was removed.

Discovery changes

/ptir/ now requires explicit series: PTIR plus content_type: briefing.
/writing/ excludes PTIR through publication metadata rather than PTIR category membership.
The homepage Recent Writing section excludes PTIR through explicit metadata.
The homepage Latest PTIR selector uses explicit metadata.
The homepage compatibility link labeled “Read the blog” now points and reads “More writing”.

Governance

New PTIR editions must use series: PTIR and content_type: briefing. PTIR is not a subject category. Discovery logic must not depend on title matching or categories: PTIR.

Guardrails

No PTIR body content was rewritten.
No PTIR permalink was changed.
Topical tags were preserved for later governance review.
No historical/privacy disposition was changed.

Next sprint: EI-4.4 — URL & Redirect Governance.