scm: history max count should be configurable

Description

Contributor guide

Tech stack

typescript

Domain

frontendbackend

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-2 days

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

needs investigation

Prerequisites

Understanding of Theia extension systemFamiliarity with SCM viewsKnowledge of configuration management in Theia

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

40

Research direction

Start by reading the background discussion in https://github.com/eclipse theia/theia/discussions/11371 to understand the context. Determine which approach (dropdown or text field) is preferred by the maintainers. Look at how other similar configurations are implemented in Theia, such as the 'scm.defaultViewMode' setting. Implement the chosen approach in the SCM extension, ensuring the configuration is properly stored and used to limit the number of commits displayed in the history view.