feat(036): evidence array in AgentRunModel + model tests

frontend/src/lib/models/AgentRunModel.svelte.ts

@@ -43,6 +43,14 @@ export interface DraftRef {
   persisted_at?: string | null;
 }
 
+export interface EvidenceRef {
+  id: string;
+  kind: string;
+  name: string;
+  sha256: string;
+  capture_meta: Record<string, unknown> | null;
+}
+
 export interface GateView {
   id: string;
   operation: string;
@@ -66,6 +74,7 @@ export class AgentRunModel {
   lastSequence: number = $state(0);
   stages: StageInfo[] = $state([]);
   drafts: DraftRef[] = $state([]);
+  evidence: EvidenceRef[] = $state([]);
   pendingGate: GateView | null = $state(null);
   errorCode: string | null = $state(null);
   errorDetail: string | null = $state(null);
@@ -108,6 +117,15 @@ export class AgentRunModel {
       return true;
     }
 
+    // evidence_captured → add to evidence array
+    if (meta.type === "evidence_captured" && meta.evidence) {
+      if (meta.sequence !== undefined) this.lastSequence = meta.sequence;
+      const ev = meta.evidence as unknown as EvidenceRef;
+      this.evidence = [...this.evidence, ev];
+      log("AgentRuns.Model", "REFLECT", "Evidence captured", { evidence_id: ev.id });
+      return true;
+    }
+
     // agent_run_terminal → finalize
     if (meta.type === "agent_run_terminal") {
       if (meta.sequence !== undefined) this.lastSequence = meta.sequence;
@@ -190,6 +208,7 @@ export class AgentRunModel {
     this.lastSequence = 0;
     this.stages = [];
     this.drafts = [];
+    this.evidence = [];
     this.pendingGate = null;
     this.errorCode = null;
     this.errorDetail = null;

frontend/src/lib/models/__tests__/AgentRunModel.evidence.test.ts

@@ -0,0 +1,65 @@
+// frontend/src/lib/models/__tests__/AgentRunModel.evidence.test.ts
+// #region TestAgentRuns.Evidence [C:3] [TYPE Module] [SEMANTICS test,agent-run,evidence,model]
+// @BRIEF L1 tests for evidence_captured metadata and evidence array.
+// @RELATION BINDS_TO -> [AgentRuns.Model]
+// @TEST_EDGE evidence_captured -> evidence array populated.
+// @TEST_EDGE multiple_evidence -> array grows.
+// @TEST_EDGE reset_clears_evidence -> array empty.
+import { describe, it, expect, beforeEach } from "vitest";
+import { AgentRunModel } from "../AgentRunModel.svelte.js";
+
+describe("AgentRunModel — Evidence", () => {
+  let model: AgentRunModel;
+
+  beforeEach(() => {
+    model = new AgentRunModel();
+    model.applyMetadata({
+      type: "agent_run_started", agent_run_id: "run-1", sequence: 1,
+    });
+  });
+
+  it("accepts evidence_captured and adds to array", () => {
+    const applied = model.applyMetadata({
+      type: "evidence_captured", agent_run_id: "run-1", sequence: 2,
+      evidence: {
+        id: "ev-1", kind: "screenshot_evidence", name: "screenshot_001.png",
+        sha256: "a".repeat(64),
+        capture_meta: { viewport: { width: 1920, height: 1200 }, capture_method: "cdp" },
+      },
+    });
+    expect(applied).toBe(true);
+    expect(model.evidence).toHaveLength(1);
+    expect(model.evidence[0].id).toBe("ev-1");
+    expect(model.evidence[0].kind).toBe("screenshot_evidence");
+  });
+
+  it("accumulates multiple evidence items", () => {
+    model.applyMetadata({
+      type: "evidence_captured", agent_run_id: "run-1", sequence: 2,
+      evidence: { id: "ev-1", kind: "screenshot_evidence", name: "a.png", sha256: "a".repeat(64), capture_meta: null },
+    });
+    model.applyMetadata({
+      type: "evidence_captured", agent_run_id: "run-1", sequence: 3,
+      evidence: { id: "ev-2", kind: "screenshot_evidence", name: "b.png", sha256: "b".repeat(64), capture_meta: null },
+    });
+    expect(model.evidence).toHaveLength(2);
+  });
+
+  it("reset clears evidence", () => {
+    model.applyMetadata({
+      type: "evidence_captured", agent_run_id: "run-1", sequence: 2,
+      evidence: { id: "ev-1", kind: "screenshot_evidence", name: "a.png", sha256: "a".repeat(64), capture_meta: null },
+    });
+    model.reset();
+    expect(model.evidence).toHaveLength(0);
+  });
+
+  it("ignores evidence without evidence field", () => {
+    const applied = model.applyMetadata({
+      type: "evidence_captured", agent_run_id: "run-1", sequence: 2,
+    });
+    expect(applied).toBe(false);
+    expect(model.evidence).toHaveLength(0);
+  });
+});
+// #endregion TestAgentRuns.Evidence

specs/036-agent-test-stabilization/tasks.md

@@ -1,7 +1,7 @@
 #region AgentTestStabilization.Tasks [C:3] [TYPE ADR] [SEMANTICS tasks,agent-run,implementation]
 @BRIEF Ordered TDD implementation tasks for feature 036.
 
-**Status**: 43/51 completed (84%). Branch: `036-agent-test-stabilization`.  
+**Status**: 45/51 completed (88%). Branch: `036-agent-test-stabilization`.  
 **Tests**: backend 22 ✅ · frontend 3606 ✅ · E2E 7 сценариев написаны ⏳  
 **Last updated**: 2026-07-28
 
@@ -85,8 +85,8 @@
 - [x] T045 [P] Extend AgentRuns.Artifacts.Register to accept capture_meta and enforce mask_selectors contract.
 - [x] T046 Write failing evidence_captured event tests in backend/tests/services/agent_runs/test_events.py.
 - [ ] T047 Extend AgentRuns.Gradio.Emit to emit evidence_captured events with artifact refs, viewport, and sha256.
-- [ ] T048 Write failing evidence preview/disposition model tests in frontend/src/lib/models/__tests__/AgentRunModel.evidence.test.ts.
-- [ ] T049 Extend frontend AgentRunModel to accept evidence_captured events and expose evidence array.
+- [x] T048 Write failing evidence preview/disposition model tests in frontend/src/lib/models/__tests__/AgentRunModel.evidence.test.ts.
+- [x] T049 Extend frontend AgentRunModel to accept evidence_captured events and expose evidence array.
 - [x] T050 Verify masked derivative is stored separately; original is never retrievable through external preview URLs.
 - [x] T051 Audit no-unmasked-screenshot-leaves-backend invariant.