Changelog

Fetch repo collaborators from the GitHub API and show them as

filtered suggestions when editing the assignees field on GitHub-linked

tasks. Collaborators are cached per-repo to avoid redundant API calls

when switching between tasks in the same repository.

• Add ListCollaboratorsAsync to IGitHubIssueApiClient and implementation
• Add GetRepoCollaboratorsAsync to GitHubIssueSyncService (best-effort)
• Wire collaborator loading, caching, and prefix filtering into the

assignee ViewModel partial (caps at 8 suggestions)

• Add suggestion dropdown in TaskDetailPanel below the assignee input

Move GitHub assignees chip editor from the dedicated GitHub metadata

section into the custom fields section. The GitHub metadata border

now only shows issue ref and "View on GitHub" link.

Custom fields section now:

• Hides empty system fields (only shows on GitHub-linked tasks with values)
• Shows "GH" badge on GitHub system fields
• Includes inline assignee chip editor for add/remove (pushes to GitHub)
• Refactors SaveAssigneesToTask to use CustomFieldService.SetFieldValue

Add TasksViewModel.CustomFieldEditing partial with typed editing commands:

SetCustomFieldText, SetCustomFieldNumber, SetCustomFieldCheckbox,

SetCustomFieldSelect, SetCustomFieldDate — each resolves the field

definition by key+projectId, updates via CustomFieldService, and persists.

Settings Fields tab now has a project filter dropdown to show fields

scoped to a specific project or all projects.

System fields (auto-created by GitHub sync) display a "System" badge

and cannot be deleted — the delete button is hidden. Users can still

toggle ShowInList/ShowInCard visibility for system fields.

New custom fields are created scoped to the selected project filter.

Add CustomFieldService dependency to GitHubIssueSyncService and

GitHubProjectSyncService. Both call EnsureGitHubSystemFieldsAsync()

at the start of SyncAsync to create field definitions before processing.

TasksPlugin also triggers system field creation on init if any GitHub

issue sources exist, so fields are available immediately after startup.

Add ProjectId to GitHubIssueSource so synced issues can be assigned

to a specific project. New tasks created from issues inherit the

source's ProjectId.

Add ProjectId, IsSystem, and SourceType properties to CustomFieldDefinition

to support project-scoped fields and auto-created system fields.

Restructure CustomFieldService cache from key-based to ID-based lookups

since project-scoped fields from different projects can share keys.

Add GetFieldsForProject() for project-aware field resolution, and

EnsureGitHubSystemFieldsAsync() for idempotent creation of GitHub

metadata field definitions (author, assignees, comments, project status).

Create GitHubSystemFields static class defining canonical field definitions

and internal keys that remain hidden from the UI.