feat: add commands for clearing candidates and reusing candidate settings, update UI controls

commands/generation.test.ts

@@ -5,6 +5,8 @@ import {
   generationAddCandidateCommand,
   generationApplyCandidateAsLayerCommand,
   generationRemoveCandidateCommand,
+  generationClearCandidatesCommand,
+  generationReuseCandidateSettingsCommand,
   generationReplaceCandidatePixelsCommand,
   generationSetCompareModeCommand,
   generationFailJobCommand,
@@ -38,6 +40,38 @@ describe("generation commands", () => {
     expect(next.editor.generation.compareMode).toBe("split");
   });
 
+  test("clears the candidate session and resets comparison", () => {
+    const withCandidate = generationAddCandidateCommand.execute(
+      { state: createInitialAppState("Test") },
+      { candidate: generationCandidate("candidate-1") },
+    );
+    const comparing = generationSetCompareModeCommand.execute({ state: withCandidate }, { mode: "split" });
+
+    const next = generationClearCandidatesCommand.execute({ state: comparing }, undefined);
+
+    expect(next.editor.generation.candidates).toEqual([]);
+    expect(next.editor.generation.selectedCandidateId).toBeUndefined();
+    expect(next.editor.generation.compareMode).toBe("result");
+  });
+
+  test("reuses a candidate's full settings with its resolved seed", () => {
+    const candidate = generationCandidate("candidate-1");
+    candidate.settings = {
+      ...candidate.settings,
+      prompt: "Stored prompt",
+      model: "stored-model.safetensors",
+      seed: -1,
+      inpaint: { ...candidate.settings.inpaint, maskBlur: 7 },
+    };
+    candidate.seed = 987654;
+    const state = generationAddCandidateCommand.execute({ state: createInitialAppState("Test") }, { candidate });
+
+    const next = generationReuseCandidateSettingsCommand.execute({ state }, { candidateId: candidate.id });
+
+    expect(next.editor.tools.generate).toEqual({ ...candidate.settings, seed: 987654 });
+    expect(next.editor.generation).toBe(state.editor.generation);
+  });
+
   test("applies candidates as top-level layers", () => {
     const withRemainingCandidate = generationAddCandidateCommand.execute(
       { state: documentWithSourceLayer() },