fix(core): show fallback notes for forced version bumps

[dangreen]

No description provided.

[coveralls]

Coverage Report for CI Build 28302594795

Coverage increased (+0.2%) to 59.868%

Details

• Coverage increased (+0.2%) from the base build.
• Patch coverage: 1 of 1 lines across 1 file are fully covered (100%).
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	689
Covered Lines:	466
Line Coverage:	67.63%
Relevant Branches:	375
Covered Branches:	171
Branch Coverage:	45.6%
Branches in Coverage %:	Yes
Coverage Strength:	9.45 hits per line

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💛 - Coveralls

[Copilot]

Pull request overview

Adds a fallback message to generated changelog entries when a version bump produces no commit-based release notes, and updates test scaffolding and dependencies to support the new template behavior.

Changes:

• Introduce a preamblePartial template hook to inject a placeholder message when commit/note groups are empty.
• Wire the partial into the core bump flow and add unit tests for empty vs non-empty generated notes.
• Update workspace/package dependencies and lockfile to include @conventional-changelog/template and related conventional-changelog package bumps.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pnpm-workspace.yaml	Updates minimum-release-age exclusions to match bumped changelog-related packages.
pnpm-lock.yaml	Refreshes lockfile for updated conventional-changelog/template dependency chain and related transitive bumps.
packages/test/src/project.mock.ts	Adds postReleaseCommits option to produce repos with no post-tag commits for empty-notes testing.
packages/core/src/project/project.ts	Configures changelog writer to use the new preamblePartial.
packages/core/src/project/packageJson.spec.ts	Adds coverage for placeholder behavior when generated release notes are empty/non-empty.
packages/core/src/change-log.ts	Implements preamblePartial using @conventional-changelog/template segments().
packages/core/package.json	Adds @conventional-changelog/template and bumps conventional-changelog preset dependency.

Files not reviewed (1)

• pnpm-lock.yaml: Generated file

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