plugin_habits crashes with TypeError when payload.commits is null (private repositories)

[AnalogicMindset]

Description

plugin_habits throws a TypeError when used by accounts whose activity is primarily on private repositories.

Error

TypeError: Cannot destructure property 'author' of 'undefined' as it is undefined.
    at file:///metrics/source/plugins/habits/index.mjs:51:21
    at Array.filter (<anonymous>)
    at Object.default [as habits] (file:///metrics/source/plugins/habits/index.mjs:51:12

Root cause

In source/plugins/habits/index.mjs, the following chain:

commits
  .flatMap(({payload}) => payload.commits)
  .filter(({author}) => ...)

GitHub's Events API omits payload.commits (returns null or undefined) for push events on private repositories, even when using an authenticated token with full repo scope.

This causes flatMap to produce undefined elements, which the subsequent .filter(({author}) => ...) cannot destructure.

I verified this by inspecting 300 events via the GitHub API: out of 171 PushEvent entries, the vast majority had payload.commits === null, and all of them belonged to private repositories.

Suggested fix

Change line ~51 from:

.flatMap(({payload}) => payload.commits)

to:

.flatMap(({payload}) => payload.commits ?? [])

This makes the plugin skip push events with no commit data instead of crashing.

Configuration used

plugin_habits: yes
plugin_habits_from: 50
plugin_habits_days: 14
plugin_habits_charts: yes
plugin_habits_facts: yes

Environment

• metrics version: latest (3.34.0)
• account type: user
• repositories: primarily private