Every project management tool integrates with GitHub. The differences are in the details, and one of them changes how the history reads.
Reads and writes use different tokens
Most integrations authenticate as a single connected account. Everything the tool does in GitHub is then attributed to that account, so the history fills with actions taken by a bot on behalf of somebody the log does not name.
Planner.day splits it. Reads use a business-level token, added once by an admin, which is what keeps issue, branch and pull request state current across the workspace. Writes use each member’s own token. When you close an issue or open a branch from a task, GitHub records that you did it, because you did.
That matters for the obvious auditing reason, and for a less obvious one: review and blame history stays useful.
What appears on the task
A task shows its linked issues, branches and pull requests, with commit and pull request activity tracked against it. Commit diffs are viewable from the task, so the common question of what actually changed does not require a context switch into GitHub.
Automation
Workflow rules can create a GitHub issue or a branch as an action. A triaged bug report can become a task and an issue in one step, or moving a task into a particular status can open the branch for it. See workflow automation.
Setup
An admin adds the business read token once, in organisation settings. Individual members add their own write token from their account settings, which takes about a minute and does not require admin involvement.