feat: diagram creation progress COMPASS-9521

[paula-stacho]

Description

Steps:

• Sampling (with a counter)
• Analyzing (with a counter)
• Inferring relationships (without a counter because I think that'd just be confusing.. we don't know how many relationships there are.. but the progress bar moves depending on the number of collections iterated over)

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• If this change updates the UI, screenshots/videos are added and a design review is requested
• If this change could impact the load on the MongoDB cluster, please describe the expected and worst case impact
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

Open Questions

Dependents

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)

[dianchenghu]

Can we change the progress lables text with ellipsis（…）instead of ..?
For example: Sampling collections…

[Copilot]

Pull request overview

This PR implements a progress tracking system for diagram creation in Compass data modeling. The key improvement is replacing a simple "Analyzing..." loader with a detailed progress indicator that shows three distinct phases: sampling collections, analyzing schemas, and inferring relationships. Each phase displays real-time progress with counters, giving users better visibility into the analysis process.

Key changes:

• Introduced granular progress tracking with step-based state management (SAMPLING, ANALYZING_SCHEMA, INFERRING_RELATIONSHIPS)
• Created a new AnalysisProgressStatus component with a progress bar that updates as collections are processed
• Refactored the analysis process state to track progress per phase rather than just "idle" vs "in-progress"

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/compass-data-modeling/src/store/analysis-process.ts	Refactored state management to track analysis steps and phase-specific progress counters
packages/compass-data-modeling/src/components/analysis-progress-status.tsx	New component implementing the progress indicator UI with cancel functionality
packages/compass-data-modeling/src/components/analysis-progress-status.spec.tsx	Test coverage for the progress status component across different analysis scenarios
packages/compass-data-modeling/src/components/diagram-editor.tsx	Updated to use the new progress component instead of generic cancel loader
packages/compass-data-modeling/src/components/new-diagram-form.tsx	Updated to use the new selector for checking analysis progress state
packages/compass-data-modeling/src/components/diagram-editor-toolbar.tsx	Minor cleanup removing redundant property assignment
packages/compass-data-modeling/test/setup-store.tsx	Enhanced test setup to support sampling simulation and exported test connections
packages/compass-components/src/components/loader.tsx	Added new ProgressLoaderWithCancel component combining progress bar with cancel button
packages/compass-components/src/components/leafygreen.tsx	Exported ProgressBar component from leafygreen-ui
packages/compass-components/package.json	Added @leafygreen-ui/progress-bar dependency
packages/compass-components/src/index.ts	Exported the new ProgressLoaderWithCancel component