chore: snapshot WIP across dashboard, engine, and core

Bundles staged work-in-progress modifications across multiple packages
(routes, store, agent-instructions, self-healing, QuickEntryBox, etc.)
plus the dashboard theme-data.css preload fix.

Note: an unstaged 621-line deletion in .fusion/memory.md was deliberately
NOT committed — it appears to be an accidental overwrite of architecture
notes and is left in the working tree for review.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/dashboard/app/components/QuickEntryBox.tsx

@@ -1016,7 +1016,7 @@ export function QuickEntryBox({ onCreate, addToast, tasks = [], availableModels,
               onBlur={handleBlur}
               disabled={isSubmitting || isDisabled}
               data-testid="quick-entry-input"
-              rows={1}
+              rows={2}
               aria-controls="quick-entry-controls"
               aria-expanded={isDisclosureExpanded}
             />

packages/dashboard/app/components/TaskDetailModal.tsx

@@ -1083,9 +1083,9 @@ export function TaskDetailModal({
               ) : (
                 <div className="detail-activity">
                   <h4>Activity</h4>
-                  {task.log && task.log.length > 0 ? (
+                  {workingTask.log && workingTask.log.length > 0 ? (
                     <div className="detail-activity-list">
-                      {[...task.log].reverse().map((entry, i) => (
+                      {[...workingTask.log].reverse().map((entry, i) => (
                         <div key={i} className="detail-log-entry">
                           <div className="detail-log-header">
                             <span className="detail-log-timestamp">
@@ -1180,10 +1180,10 @@ export function TaskDetailModal({
           </div>
           <div className="detail-section detail-step-progress">
             <h4>Progress</h4>
-            {task.steps && task.steps.length > 0 ? (
+            {workingTask.steps && workingTask.steps.length > 0 ? (
               <div className="step-progress-wrapper">
                 <div className="step-progress-bar">
-                  {task.steps.map((step, index) => (
+                  {workingTask.steps.map((step, index) => (
                     <div
                       key={index}
                       className={`step-progress-segment step-progress-segment--${step.status}`}
@@ -1193,7 +1193,7 @@ export function TaskDetailModal({
                   ))}
                 </div>
                 <span className="step-progress-label">
-                  {task.steps.filter(s => s.status === "done").length}/{task.steps.length} steps
+                  {workingTask.steps.filter(s => s.status === "done").length}/{workingTask.steps.length} steps
                 </span>
               </div>
             ) : (

packages/dashboard/app/components/__tests__/QuickEntryBox.test.tsx

@@ -234,6 +234,13 @@ describe("QuickEntryBox", () => {
     expect((textarea as HTMLTextAreaElement).placeholder).toBe("Add a task...");
   });
 
+  it("renders textarea with baseline height of 2 rows (FN-1580)", () => {
+    renderQuickEntryBox({});
+    const textarea = screen.getByTestId("quick-entry-input");
+    expect(textarea).toBeTruthy();
+    expect((textarea as HTMLTextAreaElement).rows).toBe(2);
+  });
+
   it("does NOT expand on focus when autoExpand is false", () => {
     renderQuickEntryBox({ autoExpand: false });
     const textarea = screen.getByTestId("quick-entry-input");