UI: Refactor breadcrumb URLs to use Path Constants

[iOvergaard]

Summary

• Add generic UMB_WORKSPACE_EDIT_PATH_PATTERN and UMB_WORKSPACE_EDIT_VARIANT_PATH_PATTERN to core workspace paths
• Fix UmbPathPattern class to support multi-level pattern chaining via new toAbsolutePatternString() method
• Refactor breadcrumb and tree components to use path constants instead of hardcoded URL strings

Changes

File	Change
path-pattern.class.ts	Added toAbsolutePatternString() method for proper multi-level chaining
paths.ts	Added UMB_WORKSPACE_EDIT_PATH_PATTERN and UMB_WORKSPACE_EDIT_VARIANT_PATH_PATTERN
workspace-menu-breadcrumb.element.ts	Use UMB_WORKSPACE_EDIT_PATH_PATTERN
menu-variant-tree-structure-workspace-context-base.ts	Use both new path patterns
tree-item-context-base.ts	Use UMB_WORKSPACE_EDIT_PATH_PATTERN
user-grid-collection-view.element.ts	Use existing UMB_EDIT_USER_WORKSPACE_PATH_PATTERN

Test plan

• Verify breadcrumb navigation in Content section (Content → Home → Child)
• Verify variant suffix is included in breadcrumb URLs (/invariant)
• Verify tree item URLs are generated correctly
• Verify user grid collection URLs work correctly
• Build passes

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR refactors breadcrumb and tree navigation URLs to use centralized path pattern constants instead of hardcoded URL strings, while also fixing a bug in multi-level path pattern chaining.

Key Changes:

• Fixed UmbPathPattern constructor to properly preserve the full path chain when nesting patterns using a new toAbsolutePatternString() method
• Added generic workspace edit path patterns (UMB_WORKSPACE_EDIT_PATH_PATTERN and UMB_WORKSPACE_EDIT_VARIANT_PATH_PATTERN) for reuse across different entity types
• Replaced manual string concatenation with type-safe path pattern generation throughout navigation components

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
path-pattern.class.ts	Fixed constructor to use toAbsolutePatternString() when chaining patterns, ensuring multi-level pattern inheritance works correctly; added new method for accessing full pattern chain
paths.ts	Added two generic path patterns for workspace edit URLs with proper TypeScript typing for parameters
workspace-menu-breadcrumb.element.ts	Replaced hardcoded URL string concatenation with UMB_WORKSPACE_EDIT_PATH_PATTERN.generateAbsolute()
tree-item-context-base.ts	Replaced manual path construction with UMB_WORKSPACE_EDIT_PATH_PATTERN.generateAbsolute()
menu-variant-tree-structure-workspace-context-base.ts	Removed dead code that called generateAbsolute() without using result; replaced manual string building with proper path pattern usage for both variant and non-variant paths
user-grid-collection-view.element.ts	Updated to use existing UMB_EDIT_USER_WORKSPACE_PATH_PATTERN.generateAbsolute() instead of string concatenation