fix(git): hide stale merged/closed PRs on the default branch

[GuilhermeVieiraDev]

What Changed

Added a filter so that merged and closed PRs are not surfaced when the current branch is the default branch (main/master). Open PRs on the default branch are still shown normally.

Why

When a PR was created with main as the head branch (e.g. a reverse merge from main into a feature branch), that merged PR would keep showing up in the sidebar status every time you were on main. This happened because findLatestPr falls back to the most recently updated PR regardless of state when no open PR exists.

On a feature branch this fallback makes sense since seeing "PR merged" is useful feedback. On the default branch it's just noise from old reverse merges that aren't relevant to the current context.

The fix checks isDefaultBranch (already available from statusDetails) and skips non-open PRs when it's true, keeping the feature branch behavior unchanged.

I ran into this while working on main for a smaller project that had an old reverse-merge PR. The merged PR kept showing up in the sidebar even though it wasn't relevant anymore.

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

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Note

Low Risk
Low risk: small conditional change to GitManager status PR selection plus a focused test, affecting only whether PR metadata is shown while on the default branch.

Overview
Updates GitManager remote status to suppress merged/closed PR matches when the current branch is the default branch, returning pr: null unless the latest match is still open.

Adds a regression test ensuring a merged PR with headRefName: main does not appear in status while on main.

^{Reviewed by Cursor Bugbot for commit dda0993. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Hide stale merged/closed PRs from manager.status when on the default branch

When isDefaultBranch is true, manager.status now returns null for status.pr if the latest PR is not in the open state. Previously, merged or closed PRs would still appear in status regardless of branch context. Behavioral Change: callers on the default branch that previously received a merged/closed PR in status.pr will now receive null.

^{Macroscope summarized dda0993.}

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[macroscopeapp]

Approvability

Verdict: Approved

A small, self-contained bug fix that adds a simple conditional to hide merged/closed PRs when on the default branch. The change has clear intent explained in comments, limited scope (single conditional check), and includes test coverage.

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