docs: close out terminal service-tier provenance repair

[ericjuta]

Summary

Close out the terminal service-tier provenance repair from #18 after its verified merge and deployment. This PR changes only OpenSpec documentation and archive locations.

Type of change

• docs: documentation only

Related to #18.

OpenSpec

• This PR archives the completed OpenSpec change.
• No new runtime behavior, wire format, schema, or configuration changes.

Archive: openspec/changes/archive/2026-09-14-fix-terminal-service-tier-provenance/.

Both delta requirement blocks were already present verbatim in the normative specs. Archival used --skip-specs to avoid applying them twice; validation was not skipped.

Changes

• Complete the release checklist and archive all six change artifacts.
• Correct the runbook's entitlement, scheduling, and proxy-regression claims. Successful-terminal tiers are reported metadata; unmatched direct/proxy runs do not isolate a proxy defect.
• Keep diagnostic comparisons free of credentials, account identifiers, prompts, and response bodies.

Test plan

• openspec validate --specs --strict --no-interactive: 39 passed, 0 failed.
• openspec validate fix-terminal-service-tier-provenance --strict --no-interactive: passed before archive.
• openspec archive fix-terminal-service-tier-provenance --yes --skip-specs: task status complete, archive succeeded.
• ruff check ., ruff format --check ., and ty check: passed; 838 Python files already formatted.
• Reviewed the complete seven-file rename/documentation diff. Runtime, tests, dependencies, and build configuration are unchanged from fix(proxy): preserve terminal service-tier provenance #18, so the full application suites were not rerun for this documentation-only closeout. The implementation proof remains recorded on fix(proxy): preserve terminal service-tier provenance #18.
• Current-head GitHub CI and Codex review must pass before merge.

Checklist

• Conventional Commit title and related PR linked.
• No new runtime logic requiring regression tests.
• Relevant local static and OpenSpec checks passed.
• CHANGELOG left unchanged for release-please.

[ericjuta]

@codex review

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-14T23:53:28.597848Z	b89b2bb	Manual request

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review" or "@codex security review".

Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Keep them coming!

Reviewed commit: b89b2bb617

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".