fix: update default repository URL to use GitHub tree path

[zhqjiang]

No description provided.

[Copilot]

Pull request overview

Updates the default repository URL used by the plugin scaffolding to point to a valid GitHub directory path (tree/main/...), and aligns the TypeScript template test fixture accordingly, along with a patch version bump and changelog entry.

Changes:

• Update plugin init default repository URL to https://github.com/.../tree/main/plugins/<name>.
• Update the TypeScript template’s test fixture repo URL to match the new default.
• Bump CLI version to 0.6.7 and add a corresponding changelog entry.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
src/templates/typescript/test/index.test.ts.eta	Updates the template test’s repo field to use the tree/main/plugins/... path.
src/commands/plugin/init.ts	Updates collectURL() default to the tree/main/plugins/... GitHub URL.
package.json	Bumps package version from 0.6.6 to 0.6.7.
CHANGELOG.md	Adds a 0.6.7 release note describing the URL default fix.

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