chore: bump version to 0.1.13

[mnriem]

Automated version bump to 0.1.13.

This PR was created by the Release Trigger workflow. The git tag v0.1.13 has already been pushed and the release artifacts are being built.

Merge this PR to record the version bump and changelog update on main.

[Copilot]

Pull request overview

Records the automated release bump for v0.1.13 by updating the changelog on main.

Changes:

• Adds a new 0.1.13 section to CHANGELOG.md with aggregated release notes.

Comments suppressed due to low confidence (1)

CHANGELOG.md:26

• The 0.1.13 release notes list items that appear to belong to earlier releases (e.g., "chore: bump version to 0.1.12" and multiple release-trigger workflow fixes that are already documented under 0.1.12). Please ensure the 0.1.13 section only includes changes actually shipped in 0.1.13 and avoid duplicating prior-version entries.

- fix(clarify): correct conflicting question limit from 10 to 5 (#1557)
- chore: bump version to 0.1.12 (#1737)
- fix: use RELEASE_PAT so tag push triggers release workflow (#1736)
- fix: release-trigger uses release branch + PR instead of direct push to main (#1733)
- fix: Split release process to sync pyproject.toml version with git tags (#1732)

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[Copilot]

CHANGELOG now contains two separate sections with the exact same version header (## [0.1.13] - 2026-03-03 here and again later in the file). This makes the release notes ambiguous; please merge these into a single 0.1.13 section (with both Changed/Fixed subsections) or correct the older header to the intended version.

This issue also appears on line 22 of the same file.

[Copilot]

There are two consecutive blank lines before the next version header, which creates an extra empty paragraph in the rendered changelog. Please keep spacing consistent with the rest of the file (single blank line between sections).