[Repo] Cap package labels and infer type labels

[adamziel]

What it does

Caps auto-applied [Package][...] labels to the top 3 packages by changed
lines, and keeps actions/labeler focused on path labels that do not need a
cap: [Aspect], [Focus], [Feature], and [Type] Documentation.

The workflow also infers one [Type] label from an unambiguous
conventional-commit PR title prefix such as fix:, feat:, perf:, or
docs:.

Rationale

The old path-only package rules applied every matching package label. Wide
refactors could produce a wall of [Package] labels, which made the labels less
useful for scanning and triage.

[Type] labels are not reliably inferable from paths, but the PR title prefix
is a useful signal when it maps cleanly to one existing label.

Implementation

Removed [Package][...] rules from .github/labeler.yml and added a
package-and-type job to .github/workflows/auto-label-prs.yml.

The new job uses actions/github-script to:

1. Fetch changed PR files.
2. Match files to package labels by path prefix.
3. Rank packages by additions + deletions, then file count.
4. Apply at most 3 package labels.
5. Apply one [Type] label when the PR title prefix is unambiguous.

Testing instructions

Validated locally with:

ruby -e "require 'yaml'; ARGV.each { |f| YAML.load_file(f); puts \"#{f}: YAML ok\" }" .github/labeler.yml .github/workflows/auto-label-prs.yml
npm exec prettier -- --check .github/labeler.yml .github/workflows/auto-label-prs.yml

Note: the commit hook attempted nx format --fix --parallel --uncommitted, but
this checkout does not have Nx modules installed, so that hook check could not
run locally.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates the PR auto-labeling workflow to cap [Package][...] labels to the top 3 packages by churn and to infer a single [Type] label from conventional-commit PR title prefixes, while keeping actions/labeler focused on uncapped path-based labels.

Changes:

• Split labeling into two jobs: path-based labeling via actions/labeler, and custom package/type labeling via actions/github-script.
• Removed [Package][...] rules from .github/labeler.yml and documented the new responsibilities.
• Added package ranking (by additions+deletions, then file count) and [Type] inference rules based on PR title prefix.

Reviewed changes

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

File	Description
.github/workflows/auto-label-prs.yml	Adds a custom job to cap package labels and infer a [Type] label; renames the existing labeler job to paths.
.github/labeler.yml	Removes package label rules and narrows labeler.yml’s scope to uncapped, path-inferable labels.

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