[tracking] v3.9.1 docs release — bring conceptkernel.org from v3.7 to CKP v3.9.1

[styk-tv]

Why

This repo is the source of conceptkernel.org, which the protocol's reference implementation (styk-tv/pgCK) publicly names as the reference authority for CKP. The site currently serves the v3.7 documentation set while the protocol epoch is CKP v3.9.1 — Critical Isolation. The gap is already user-visible: ontology IRIs circulating in public examples return 404 here (#1).

This issue anchors the v3.9.1 docs release. All work is grouped under the v3.9.1 milestone.

Workstream

Foundation (unblocks everything else):

• Ontology hosting: /ontology/v3.8/ IRIs 404 while public consumers already dereference them #1 — Ontology hosting: publish /ontology/v3.8/ and /ontology/v3.9/ TTL sets (live 404 today)

Content:

• Author the v3.9.1 documentation set (docs/v3.9) — Critical Isolation #2 — Author the v3.9.1 documentation set (docs/v3.9/)
• Version continuity: v3.8 was never published — fold forward or archival stub #3 — Version continuity: decide fold-forward vs archival stub for the unpublished v3.8
• Ecosystem page: current public implementations and published artifacts #5 — Ecosystem page: current public implementations and published artifacts

Release:

• Switch-over: site chrome and default version to v3.9.1 (hero, nav, sitemap, llms.txt, browse) #4 — Switch-over: hero, default version routing, sitemap, llms.txt, browse
• Org profile (ConceptKernel/.github) still headlines v3.5 — align with v3.9.1 #6 — Align the org profile (ConceptKernel/.github) with v3.9.1

Follow-on (blocked on upstream):

• Scoring-loop verbs documentation — blocked on the public wire contract #7 — Scoring-loop verbs documentation (blocked on Declare the derived-value wire contract — ckp.derived_sum / ckp.derived_dispersion envelopes + budget semantics (client-blocking) styk-tv/pgCK#4)

Acceptance for the release

• Landing hero announces v3.9.1 and default navigation routes into the v3.9 set
• /ontology/v3.8/core.ttl and /ontology/v3.9/core.ttl return 200
• Changelog page shows a continuous version history through v3.9.1
• styk-tv/pgCK's "reference authority" link lands on documentation matching the epoch its README describes

Ordering

#1 first (live defect, unblocks doc examples) → #2/#3/#5 in parallel → #4 switch-over → #6 same day as switch-over. #7 waits for the upstream wire contract.

[styk-tv]

Status after af10321 (deployed, verified live):

• ✅ Ontology hosting: /ontology/v3.8/ IRIs 404 while public consumers already dereference them #1 core resolution — /ontology/v3.8/core.ttl and /ontology/v3.8/ return 200; scope corrected on the issue (the core namespace is deliberately stable at v3.8 — no v3.9 IRI set exists by design). Kept open only for Browse-index integration.
• ✅ Version continuity: v3.8 was never published — fold forward or archival stub #3 closed — fold forward; no intermediate versions are published.
• 🔄 Switch-over: site chrome and default version to v3.9.1 (hero, nav, sitemap, llms.txt, browse) #4 — the landing page, llms.txt, and sitemap.xml now present CKP v3.9.1 (Critical Isolation); the VitePress doc-set chrome switches when Author the v3.9.1 documentation set (docs/v3.9) — Critical Isolation #2 ships.
• The landing page additionally previews the v3.10 direction (CKN — Concept Kernel Notation) and publishes the measured epoch timeline (v3.4 → v3.10), so the acceptance line 'reference authority matches the epoch the runtime describes' is now true at the front door: https://conceptkernel.org

Remaining in this milestone: #2 (the v3.9.1 narrative set), #5 (ecosystem page inside the doc set), #6 (org profile), #7 (blocked on styk-tv/pgCK#4).

[styk-tv]

v3.9.1 documentation set shipped (commit 0ca8aba, deployed).

Closed this round:

• ✅ Author the v3.9.1 documentation set (docs/v3.9) — Critical Isolation #2 — the v3.9.1 set (18 pages) is published and live at /v3.9/.
• ✅ Switch-over: site chrome and default version to v3.9.1 (hero, nav, sitemap, llms.txt, browse) #4 — switch-over done: nav + version switcher default to v3.9.1 (current) / v3.10 (in design); Ontology leads with v3.8 core; llms.txt + sitemap + homepage refreshed to current versions.
• ✅ Ecosystem page: current public implementations and published artifacts #5 — the ecosystem/fleet page is live at /v3.9/ecosystem.
• ✅ Ontology hosting: /ontology/v3.8/ IRIs 404 while public consumers already dereference them #1, ✅ Version continuity: v3.8 was never published — fold forward or archival stub #3 — closed earlier (ontology hosting + version continuity).

The spine of the whole set is the a verb, not a query surface distinction (/v3.9/verb-vs-query-surface), reinforced across affordances, grants, shapes, the-door, client, and critical-isolation — grounded in the pgCK/cklib changelogs, not aspirational prose.

Remaining in this milestone:

• 🔄 Org profile (ConceptKernel/.github) still headlines v3.5 — align with v3.9.1 #6 — org profile (ConceptKernel/.github) refresh to v3.9.1.
• ⏳ Scoring-loop verbs documentation — blocked on the public wire contract #7 — the v3.9 normative scoring-loop page, blocked on Declare the derived-value wire contract — ckp.derived_sum / ckp.derived_dispersion envelopes + budget semantics (client-blocking) styk-tv/pgCK#4 + pgRDF#50/#51 (documented on Scoring-loop verbs documentation — blocked on the public wire contract #7). The v3.10 CKN drafts cover it as in design meanwhile.

The ongoing v3.10 CKN expansion is tracked on the planning board (conceptkernel.org workstream) rather than as a public issue, per the in-design status.