Prepare 0.4.1 release

[hiyouga]

Summary

• Bump agenthub-python and @prismshadow/agenthub to 0.4.1 (pyproject.toml, package.json, package-lock.json)
• Rename the unreleased changelog/0.5.0/ folder to changelog/0.4.1/ per the release convention and drop the "(unreleased)" marker
• Add the 0.4.1 release line to the root CHANGELOG.md: Kimi K3, the Gemini 3.6 generation (gemini-3.6-flash, gemini-3.5-flash-lite), and GLM-5.2 support, the supported-model registry with USD/CNY pricing, context windows, and modalities, and the UnsupportedParameterError parameter error class (all merged in Support Kimi K3 and the Gemini 3.6 generation, add a supported-model registry #163)

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Prepares the 0.4.1 release by bumping package versions and publishing the corresponding changelog entries (root changelog line + per-release changelog folder entry).

Changes:

• Bump Python (agenthub-python) and TypeScript (@prismshadow/agenthub) package versions to 0.4.1.
• Publish the 0.4.1 changelog folder entry (README + detailed entry) and add the 0.4.1 line to the root CHANGELOG.md.
• Normalize the previously “unreleased” changelog entry to the release version.

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src_ts/package.json	Bumps the TypeScript package version to 0.4.1.
src_ts/package-lock.json	Updates lockfile metadata to reflect version 0.4.1.
src_py/pyproject.toml	Bumps the Python package version to 0.4.1.
changelog/0.4.1/README.md	Sets the 0.4.1 release header and summary entry.
changelog/0.4.1/2026-07-22-kimi-k3-gemini-3-6-registry.md	Adds detailed release notes for the 0.4.1 feature set.
CHANGELOG.md	Adds the one-line root changelog entry for version 0.4.1.

Files not reviewed (1)

• src_ts/package-lock.json: Generated file

Comments suppressed due to low confidence (1)

changelog/0.4.1/README.md:2

• The per-version changelog README files consistently use a “# Version x.y.z” heading and include a “Released on YYYY-MM-DD.” line (e.g., changelog/0.4.0/README.md:1-4, changelog/0.3.2/README.md:1-4). This file currently deviates from that convention, which makes the changelog index less uniform.