ci(apollo-vertex): add PR size labeling workflow [AGVSOL-1846]

[KokoMilev]

Adds size labels to apollo-vertex PRs so reviewers can quickly see how big a change is.

Inspired from: https://github.com/UiPath/coded-agentic-process/blob/main/.github/workflows/pr-size.yml

[github-actions]

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Project	Deployment	Review	Updated (PT)
apollo-canvas	🟢 Ready	Preview, Logs	Mar 20, 2026, 06:30:47 AM
apollo-landing	🟢 Ready	Preview, Logs	Mar 20, 2026, 06:30:37 AM
apollo-ui-react	🟢 Ready	Preview, Logs	Mar 20, 2026, 06:30:38 AM
apollo-vertex	🟢 Ready	Preview, Logs	Mar 20, 2026, 06:31:34 AM
apollo-wind	🟢 Ready	Preview, Logs	Mar 20, 2026, 06:30:38 AM

[github-actions]

Dependency License Review

• ✅ 1916 package(s) scanned
• ✅ No license issues found
• ⚠️ 3 package(s) excluded (see details below)

License distribution

License	Packages
MIT	1681
ISC	89
Apache-2.0	56
BSD-3-Clause	28
BSD-2-Clause	23
BlueOak-1.0.0	8
MPL-2.0	5
MIT OR Apache-2.0	3
MIT-0	3
CC0-1.0	3
LGPL-3.0-or-later	2
(MIT OR Apache-2.0)	2
Unlicense	2
Python-2.0	1
CC-BY-4.0	1
(MPL-2.0 OR Apache-2.0)	1
Unknown	1
Artistic-2.0	1
(WTFPL OR MIT)	1
(BSD-2-Clause OR MIT OR Apache-2.0)	1
CC-BY-3.0	1
0BSD	1
(MIT OR CC0-1.0)	1
MIT AND ISC	1

Excluded packages

Package	Version	License	Reason
@img/sharp-libvips-linux-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
@img/sharp-libvips-linuxmusl-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
khroma	2.1.0	Unknown	MIT per GitHub repo, missing license field in package.json

[Copilot]

Pull request overview

Adds a GitHub Actions workflow to automatically apply PR size labels (XS–XXL) for apps/apollo-vertex/** pull requests, helping reviewers quickly gauge review scope.

Changes:

• Introduces a new pull_request_target workflow that determines whether a PR is “vertex-only”.
• Computes changed lines (additions + deletions) and applies a corresponding size:* label while removing any previously managed size label.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 2 comments.