[imanimanyara]

Summary

Prepares toolkit's versions to restart at 0.1.0, as the owner decided.

• CHANGELOG.md: a new [0.1.0] - 2026-11-11 section holds the settings-store removal. The old 0.1.0–0.3.2 sections move under [Internal history] (not published), demoted so the release workflow reads only the new section. [Unreleased] is empty, as the release check requires.
• composer.json branch alias goes from 0.3.x-dev to 0.1.x-dev; the release workflow asserts it matches the tag line.
• Install lines in README, docs/installation.md and docs/getting-started.md: ^0.2 becomes ^0.1.
• UPGRADING: the settings-store section now says it ships as 0.1.0 after the reset, with composer clear-cache.

After this merges, the existing v0.1.0–v0.3.2 tags and their 8 releases are deleted, and a fresh v0.1.0 is created on the merge commit with package-tools/scripts/reset-release-tags.py --fresh. Consumers move to ^0.1 in their own PRs.

Verification (local)

• Pest: 1191 passed.
• The release-notes extraction returns only the new 0.1.0 section.

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