feat(KB-629): complete Step 6 — add documentation and changeset for bulk model editing

.changeset/add-bulk-model-edit.md

@@ -0,0 +1,16 @@
+---
+"@gsxdsm/fusion": minor
+---
+
+Add bulk model editing to dashboard list view
+
+Users can now efficiently update AI model configuration for multiple tasks at once through the dashboard list view:
+
+- Select multiple tasks via checkboxes in the list view
+- New "Bulk Edit Models" toolbar appears when tasks are selected
+- Choose executor and/or validator models from dropdowns
+- Apply changes to all selected tasks in a single action
+- Selection persists in localStorage across page reloads
+- Archived tasks are excluded from bulk editing
+
+New API endpoint: `POST /api/tasks/batch-update-models`

packages/dashboard/README.md

@@ -44,6 +44,7 @@ AI-guided interactive planning for creating well-specified tasks from high-level
 - **Task Detail Editing**: Edit task title and description directly in the task detail modal. Click the pencil icon in the modal header (available for Triage and Todo tasks) to enter edit mode.
 - **List View**: Alternative tabular view for tasks with sorting and filtering. The "Hide Done" toggle hides both Done and Archived tasks for an active-work-only view.
 - **Model Selection at Creation**: Choose executor and validator AI models while creating tasks from the board or list view, or leave them unset to use the global defaults.
+- **Bulk Model Editing**: Update AI model configuration for multiple tasks at once in the list view. Select tasks via checkboxes (archived tasks excluded), then use the "Bulk Edit Models" toolbar to apply executor and/or validator model changes to all selected tasks. Selection persists in localStorage across page reloads.
 - **Task Details**: View full task specifications, agent logs, and attachments
 - **GitHub Import**: Import issues directly from GitHub repositories
 - **PR Management**: Create, monitor, and merge pull requests for in-review tasks