Removing the latent labels from the old branching setup

[aaronpowell]

Removing some missed legacy labelling

[Copilot]

Pull request overview

This PR removes two legacy PR-intent labels from the repository’s label management workflows, aligning labeling automation with the current (non-legacy) branching/labeling model.

Changes:

• Removes the targets-main and branched-main label definitions from the repository label setup workflow.
• Removes targets-main/branched-main from PR intent labeling logic, including the old path-based detection for branched-main.
• Simplifies the PR labeling flow to apply category labels directly based on file-path patterns.

Show a summary per file

File	Description
.github/workflows/setup-labels.yml	Stops creating/updating the legacy targets-main and branched-main labels.
.github/workflows/label-pr-intent.yml	Removes legacy label management and the special-case branched-main detection logic from PR labeling.

Review details

Comments suppressed due to low confidence (1)

.github/workflows/label-pr-intent.yml:26

• Removing targets-main / branched-main from managedLabels means the workflow will no longer remove these legacy labels from existing PRs, so they can linger indefinitely even though the repo has stopped applying them. If the goal is to fully retire these labels, keep them in managedLabels (but do not add them to desiredLabels) so the workflow automatically cleans them up over time.

            const managedLabels = {
              'skills': true,
              'plugin': true,
              'agent': true,
              'instructions': true,

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Low