chore(release): prepare 8.x-1.0

[Decipher]

What

Dates the changelog for the 8.x-1.0 release: the Unreleased heading becomes 8.x-1.0 - 2026-10-01. No other change.

Why

Both fixes planned for 1.0 are on 8.x-1.x now, #3277844 and #3494240, so the Unreleased section is the release. This is the commit the 8.x-1.0 tag goes on.

Summary by CodeRabbit

• Documentation
  • Updated the changelog heading to identify the October 1, 2026 release; the existing release notes are unchanged.

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Review configuration:

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: e636c2f9-399e-491d-9df9-f0e3784ce910

📥 Commits

Reviewing files that changed from the base of the PR and between 30e76af and bdfd640.

📒 Files selected for processing (1)

• CHANGELOG.md

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: b0fa5c34-6324-4a49-bb74-03601e8d37f8

📥 Commits

Reviewing files that changed from the base of the PR and between e11c357 and 30e76af.

📒 Files selected for processing (1)

• CHANGELOG.md

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📝 Walkthrough

Walkthrough

The changelog heading changed from Unreleased to 8.x-1.0 - 2026-10-01. The release notes below the heading remain unchanged.

Changes

Release changelog

Layer / File(s)	Summary
Update release heading CHANGELOG.md	The heading changes to 8.x-1.0 - 2026-10-01. The release notes remain unchanged.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 30e76

This change only updates the release heading; no concrete merge risk remains.

Architecture Summary

Architecture risk: 🔵 Low · up to 30e76

The change affects 1 system.

Changed systems: CHANGELOG.md

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — CHANGELOG.md (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in CHANGELOG.md: Replaced the Unreleased heading with 8.x-1.0 - 2026-10-01.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely identifies the release-preparation change. It matches the changelog update for the 8.x-1.0 release.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.82%. Comparing base (e11c357) to head (bdfd640).
⚠️ Report is 1 commits behind head on 8.x-1.x.

Additional details and impacted files

@@           Coverage Diff            @@
##           8.x-1.x      #43   +/-   ##
========================================
  Coverage    84.82%   84.82%           
========================================
  Files           21       21           
  Lines          850      850           
========================================
  Hits           721      721           
  Misses         129      129           

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