SFB-068: Workflow canvas too narrow for centering

[jmrpineda]

Discovery date: 2026-05-27
Detected in version: 0.1.5.658
Reported by: user
Severity: medium
Environment: local workflow canvas in SpecForge UI
Scope / affected surface: workflow canvas layout, workflow constellation positioning, zoom handling
Evidence: user report describing leftward drift at low zoom levels and after fit-to-workflow operations

Summary

The workflow canvas appears too tightly sized around the rendered workflow. At lower zoom levels, the workflow shifts to the left instead of remaining centered, which suggests the canvas lacks sufficient space on the left side for balanced positioning.

Expected behavior

The workflow should remain centered both horizontally and vertically when shown at 100% zoom and when using fit-to-workflow style zoom actions.

Current behavior

When zooming out, the workflow drawing drifts toward the left edge. The visual balance is lost because the available canvas area is too narrow or too closely fitted to the workflow bounds, especially on the left side.

Reproduction steps

1. Open a workflow/constellation view that renders the workflow over the canvas.
2. Reduce the zoom level or use the action equivalent to fitting the workflow into view.
3. Observe that the workflow is not centered and shifts left, indicating insufficient canvas margin on that side.

Environment details

• Platform: unknown
• Browser/runtime: unknown
• Setup: repository local UI/runtime

Notes

• The likely correction is to grow the effective canvas bounds or centering logic so fit and default zoom modes keep the workflow centered on both axes.
• Review whether the centering logic uses workflow bounds directly without adding symmetric horizontal padding.