diff --git a/apps/api/src/quality-orchestrator/dto/index.ts b/apps/api/src/quality-orchestrator/dto/index.ts
new file mode 100644
index 0000000..c0f11d8
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/dto/index.ts
@@ -0,0 +1,2 @@
+export * from "./validate-completion.dto";
+export * from "./orchestration-result.dto";
diff --git a/apps/api/src/quality-orchestrator/dto/orchestration-result.dto.ts b/apps/api/src/quality-orchestrator/dto/orchestration-result.dto.ts
new file mode 100644
index 0000000..1355299
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/dto/orchestration-result.dto.ts
@@ -0,0 +1,33 @@
+import type { QualityGateResult } from "../interfaces";
+
+/**
+ * DTO for orchestration results
+ */
+export interface OrchestrationResultDto {
+  /** Task ID */
+  taskId: string;
+
+  /** Whether the completion was accepted */
+  accepted: boolean;
+
+  /** Verdict from validation */
+  verdict: "accepted" | "rejected" | "needs-continuation";
+
+  /** All gates passed */
+  allGatesPassed: boolean;
+
+  /** Required gates that failed */
+  requiredGatesFailed: string[];
+
+  /** Results from each gate */
+  gateResults: QualityGateResult[];
+
+  /** Feedback for the agent */
+  feedback?: string;
+
+  /** Suggested actions to fix issues */
+  suggestedActions?: string[];
+
+  /** Continuation prompt if needed */
+  continuationPrompt?: string;
+}
diff --git a/apps/api/src/quality-orchestrator/dto/validate-completion.dto.ts b/apps/api/src/quality-orchestrator/dto/validate-completion.dto.ts
new file mode 100644
index 0000000..627c5f1
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/dto/validate-completion.dto.ts
@@ -0,0 +1,30 @@
+import { IsString, IsArray, IsDateString, IsNotEmpty, ArrayMinSize } from "class-validator";
+
+/**
+ * DTO for validating a completion claim
+ */
+export class ValidateCompletionDto {
+  @IsString()
+  @IsNotEmpty()
+  taskId!: string;
+
+  @IsString()
+  @IsNotEmpty()
+  agentId!: string;
+
+  @IsString()
+  @IsNotEmpty()
+  workspaceId!: string;
+
+  @IsDateString()
+  claimedAt!: string;
+
+  @IsString()
+  @IsNotEmpty()
+  message!: string;
+
+  @IsArray()
+  @ArrayMinSize(0)
+  @IsString({ each: true })
+  filesChanged!: string[];
+}
diff --git a/apps/api/src/quality-orchestrator/index.ts b/apps/api/src/quality-orchestrator/index.ts
new file mode 100644
index 0000000..4e059e0
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/index.ts
@@ -0,0 +1,4 @@
+export * from "./quality-orchestrator.module";
+export * from "./quality-orchestrator.service";
+export * from "./interfaces";
+export * from "./dto";
diff --git a/apps/api/src/quality-orchestrator/interfaces/completion-result.interface.ts b/apps/api/src/quality-orchestrator/interfaces/completion-result.interface.ts
new file mode 100644
index 0000000..8eb6afd
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/interfaces/completion-result.interface.ts
@@ -0,0 +1,50 @@
+import type { QualityGateResult } from "./quality-gate.interface";
+
+/**
+ * Claim by an agent that a task is complete
+ */
+export interface CompletionClaim {
+  /** ID of the task being claimed as complete */
+  taskId: string;
+
+  /** ID of the agent making the claim */
+  agentId: string;
+
+  /** Workspace context */
+  workspaceId: string;
+
+  /** Timestamp of claim */
+  claimedAt: Date;
+
+  /** Agent's message about completion */
+  message: string;
+
+  /** List of files changed during task execution */
+  filesChanged: string[];
+}
+
+/**
+ * Result of validating a completion claim
+ */
+export interface CompletionValidation {
+  /** Original claim being validated */
+  claim: CompletionClaim;
+
+  /** Results from all quality gates */
+  gateResults: QualityGateResult[];
+
+  /** Whether all gates passed */
+  allGatesPassed: boolean;
+
+  /** List of required gates that failed */
+  requiredGatesFailed: string[];
+
+  /** Final verdict on the completion */
+  verdict: "accepted" | "rejected" | "needs-continuation";
+
+  /** Feedback message for the agent */
+  feedback?: string;
+
+  /** Specific actions to take to fix failures */
+  suggestedActions?: string[];
+}
diff --git a/apps/api/src/quality-orchestrator/interfaces/index.ts b/apps/api/src/quality-orchestrator/interfaces/index.ts
new file mode 100644
index 0000000..5c4ebc4
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/interfaces/index.ts
@@ -0,0 +1,3 @@
+export * from "./quality-gate.interface";
+export * from "./completion-result.interface";
+export * from "./orchestration-config.interface";
diff --git a/apps/api/src/quality-orchestrator/interfaces/orchestration-config.interface.ts b/apps/api/src/quality-orchestrator/interfaces/orchestration-config.interface.ts
new file mode 100644
index 0000000..a8162d4
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/interfaces/orchestration-config.interface.ts
@@ -0,0 +1,21 @@
+import type { QualityGate } from "./quality-gate.interface";
+
+/**
+ * Configuration for quality orchestration
+ */
+export interface OrchestrationConfig {
+  /** Workspace this config applies to */
+  workspaceId: string;
+
+  /** Quality gates to enforce */
+  gates: QualityGate[];
+
+  /** Maximum number of continuation attempts */
+  maxContinuations: number;
+
+  /** Token budget for continuations */
+  continuationBudget: number;
+
+  /** Whether to reject on ANY failure vs only required gates */
+  strictMode: boolean;
+}
diff --git a/apps/api/src/quality-orchestrator/interfaces/quality-gate.interface.ts b/apps/api/src/quality-orchestrator/interfaces/quality-gate.interface.ts
new file mode 100644
index 0000000..a672b0e
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/interfaces/quality-gate.interface.ts
@@ -0,0 +1,51 @@
+/**
+ * Defines a quality gate that must be passed for task completion
+ */
+export interface QualityGate {
+  /** Unique identifier for the gate */
+  id: string;
+
+  /** Human-readable name */
+  name: string;
+
+  /** Description of what this gate checks */
+  description: string;
+
+  /** Type of quality check */
+  type: "test" | "lint" | "build" | "coverage" | "custom";
+
+  /** Command to execute for this gate (optional for custom gates) */
+  command?: string;
+
+  /** Expected output pattern (optional, for validation) */
+  expectedOutput?: string | RegExp;
+
+  /** Whether this gate must pass for completion */
+  required: boolean;
+
+  /** Execution order (lower numbers run first) */
+  order: number;
+}
+
+/**
+ * Result of running a quality gate
+ */
+export interface QualityGateResult {
+  /** ID of the gate that was run */
+  gateId: string;
+
+  /** Name of the gate */
+  gateName: string;
+
+  /** Whether the gate passed */
+  passed: boolean;
+
+  /** Output from running the gate */
+  output?: string;
+
+  /** Error message if gate failed */
+  error?: string;
+
+  /** Duration in milliseconds */
+  duration: number;
+}
diff --git a/apps/api/src/quality-orchestrator/quality-orchestrator.module.ts b/apps/api/src/quality-orchestrator/quality-orchestrator.module.ts
new file mode 100644
index 0000000..a96578e
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/quality-orchestrator.module.ts
@@ -0,0 +1,12 @@
+import { Module } from "@nestjs/common";
+import { QualityOrchestratorService } from "./quality-orchestrator.service";
+
+/**
+ * Quality Orchestrator Module
+ * Provides quality enforcement for AI agent task completions
+ */
+@Module({
+  providers: [QualityOrchestratorService],
+  exports: [QualityOrchestratorService],
+})
+export class QualityOrchestratorModule {}
diff --git a/apps/api/src/quality-orchestrator/quality-orchestrator.service.spec.ts b/apps/api/src/quality-orchestrator/quality-orchestrator.service.spec.ts
new file mode 100644
index 0000000..a0027b4
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/quality-orchestrator.service.spec.ts
@@ -0,0 +1,470 @@
+import { describe, it, expect, beforeEach } from "vitest";
+import { Test, TestingModule } from "@nestjs/testing";
+import { QualityOrchestratorService } from "./quality-orchestrator.service";
+import type {
+  QualityGate,
+  CompletionClaim,
+  OrchestrationConfig,
+  CompletionValidation,
+} from "./interfaces";
+
+describe("QualityOrchestratorService", () => {
+  let service: QualityOrchestratorService;
+
+  const mockWorkspaceId = "workspace-1";
+  const mockTaskId = "task-1";
+  const mockAgentId = "agent-1";
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [QualityOrchestratorService],
+    }).compile();
+
+    service = module.get<QualityOrchestratorService>(QualityOrchestratorService);
+  });
+
+  it("should be defined", () => {
+    expect(service).toBeDefined();
+  });
+
+  describe("validateCompletion", () => {
+    const claim: CompletionClaim = {
+      taskId: mockTaskId,
+      agentId: mockAgentId,
+      workspaceId: mockWorkspaceId,
+      claimedAt: new Date(),
+      message: "Task completed successfully",
+      filesChanged: ["src/test.ts"],
+    };
+
+    const config: OrchestrationConfig = {
+      workspaceId: mockWorkspaceId,
+      gates: [
+        {
+          id: "build",
+          name: "Build Check",
+          description: "Verify code compiles",
+          type: "build",
+          command: "echo 'build success'",
+          required: true,
+          order: 1,
+        },
+      ],
+      maxContinuations: 3,
+      continuationBudget: 10000,
+      strictMode: false,
+    };
+
+    it("should accept completion when all required gates pass", async () => {
+      const result = await service.validateCompletion(claim, config);
+
+      expect(result.verdict).toBe("accepted");
+      expect(result.allGatesPassed).toBe(true);
+      expect(result.requiredGatesFailed).toHaveLength(0);
+    });
+
+    it("should reject completion when required gates fail", async () => {
+      const failingConfig: OrchestrationConfig = {
+        ...config,
+        gates: [
+          {
+            id: "build",
+            name: "Build Check",
+            description: "Verify code compiles",
+            type: "build",
+            command: "exit 1",
+            required: true,
+            order: 1,
+          },
+        ],
+      };
+
+      const result = await service.validateCompletion(claim, failingConfig);
+
+      expect(result.verdict).toBe("rejected");
+      expect(result.allGatesPassed).toBe(false);
+      expect(result.requiredGatesFailed).toContain("build");
+    });
+
+    it("should accept when optional gates fail but required gates pass", async () => {
+      const mixedConfig: OrchestrationConfig = {
+        ...config,
+        gates: [
+          {
+            id: "build",
+            name: "Build Check",
+            description: "Verify code compiles",
+            type: "build",
+            command: "echo 'success'",
+            required: true,
+            order: 1,
+          },
+          {
+            id: "coverage",
+            name: "Coverage Check",
+            description: "Check coverage",
+            type: "coverage",
+            command: "exit 1",
+            required: false,
+            order: 2,
+          },
+        ],
+      };
+
+      const result = await service.validateCompletion(claim, mixedConfig);
+
+      expect(result.verdict).toBe("accepted");
+      expect(result.allGatesPassed).toBe(false);
+      expect(result.requiredGatesFailed).toHaveLength(0);
+    });
+
+    it("should provide feedback when gates fail", async () => {
+      const failingConfig: OrchestrationConfig = {
+        ...config,
+        gates: [
+          {
+            id: "test",
+            name: "Test Suite",
+            description: "Run tests",
+            type: "test",
+            command: "exit 1",
+            required: true,
+            order: 1,
+          },
+        ],
+      };
+
+      const result = await service.validateCompletion(claim, failingConfig);
+
+      expect(result.feedback).toBeDefined();
+      expect(result.suggestedActions).toBeDefined();
+      expect(result.suggestedActions!.length).toBeGreaterThan(0);
+    });
+
+    it("should run gates in order", async () => {
+      const orderedConfig: OrchestrationConfig = {
+        ...config,
+        gates: [
+          {
+            id: "gate3",
+            name: "Third Gate",
+            description: "Third",
+            type: "custom",
+            command: "echo 'third'",
+            required: true,
+            order: 3,
+          },
+          {
+            id: "gate1",
+            name: "First Gate",
+            description: "First",
+            type: "custom",
+            command: "echo 'first'",
+            required: true,
+            order: 1,
+          },
+          {
+            id: "gate2",
+            name: "Second Gate",
+            description: "Second",
+            type: "custom",
+            command: "echo 'second'",
+            required: true,
+            order: 2,
+          },
+        ],
+      };
+
+      const result = await service.validateCompletion(claim, orderedConfig);
+
+      expect(result.gateResults[0].gateId).toBe("gate1");
+      expect(result.gateResults[1].gateId).toBe("gate2");
+      expect(result.gateResults[2].gateId).toBe("gate3");
+    });
+  });
+
+  describe("runGate", () => {
+    it("should successfully run a gate with passing command", async () => {
+      const gate: QualityGate = {
+        id: "test-gate",
+        name: "Test Gate",
+        description: "Test description",
+        type: "custom",
+        command: "echo 'success'",
+        required: true,
+        order: 1,
+      };
+
+      const result = await service.runGate(gate);
+
+      expect(result.gateId).toBe("test-gate");
+      expect(result.gateName).toBe("Test Gate");
+      expect(result.passed).toBe(true);
+      expect(result.duration).toBeGreaterThan(0);
+    });
+
+    it("should fail a gate with failing command", async () => {
+      const gate: QualityGate = {
+        id: "fail-gate",
+        name: "Failing Gate",
+        description: "Should fail",
+        type: "custom",
+        command: "exit 1",
+        required: true,
+        order: 1,
+      };
+
+      const result = await service.runGate(gate);
+
+      expect(result.passed).toBe(false);
+      expect(result.error).toBeDefined();
+    });
+
+    it("should capture output from gate execution", async () => {
+      const gate: QualityGate = {
+        id: "output-gate",
+        name: "Output Gate",
+        description: "Captures output",
+        type: "custom",
+        command: "echo 'test output'",
+        required: true,
+        order: 1,
+      };
+
+      const result = await service.runGate(gate);
+
+      expect(result.output).toContain("test output");
+    });
+
+    it("should validate expected output pattern", async () => {
+      const gate: QualityGate = {
+        id: "pattern-gate",
+        name: "Pattern Gate",
+        description: "Checks output pattern",
+        type: "custom",
+        command: "echo 'coverage: 90%'",
+        expectedOutput: /coverage: \d+%/,
+        required: true,
+        order: 1,
+      };
+
+      const result = await service.runGate(gate);
+
+      expect(result.passed).toBe(true);
+    });
+
+    it("should fail when expected output pattern does not match", async () => {
+      const gate: QualityGate = {
+        id: "bad-pattern-gate",
+        name: "Bad Pattern Gate",
+        description: "Pattern should not match",
+        type: "custom",
+        command: "echo 'no coverage info'",
+        expectedOutput: /coverage: \d+%/,
+        required: true,
+        order: 1,
+      };
+
+      const result = await service.runGate(gate);
+
+      expect(result.passed).toBe(false);
+    });
+  });
+
+  describe("shouldContinue", () => {
+    const validation: CompletionValidation = {
+      claim: {
+        taskId: mockTaskId,
+        agentId: mockAgentId,
+        workspaceId: mockWorkspaceId,
+        claimedAt: new Date(),
+        message: "Done",
+        filesChanged: [],
+      },
+      gateResults: [],
+      allGatesPassed: false,
+      requiredGatesFailed: ["test"],
+      verdict: "needs-continuation",
+    };
+
+    const config: OrchestrationConfig = {
+      workspaceId: mockWorkspaceId,
+      gates: [],
+      maxContinuations: 3,
+      continuationBudget: 10000,
+      strictMode: false,
+    };
+
+    it("should continue when under max continuations", () => {
+      const result = service.shouldContinue(validation, 1, config);
+      expect(result).toBe(true);
+    });
+
+    it("should not continue when at max continuations", () => {
+      const result = service.shouldContinue(validation, 3, config);
+      expect(result).toBe(false);
+    });
+
+    it("should not continue when validation is accepted", () => {
+      const acceptedValidation: CompletionValidation = {
+        ...validation,
+        verdict: "accepted",
+        allGatesPassed: true,
+        requiredGatesFailed: [],
+      };
+
+      const result = service.shouldContinue(acceptedValidation, 1, config);
+      expect(result).toBe(false);
+    });
+  });
+
+  describe("generateContinuationPrompt", () => {
+    it("should generate prompt with failed gate information", () => {
+      const validation: CompletionValidation = {
+        claim: {
+          taskId: mockTaskId,
+          agentId: mockAgentId,
+          workspaceId: mockWorkspaceId,
+          claimedAt: new Date(),
+          message: "Done",
+          filesChanged: [],
+        },
+        gateResults: [
+          {
+            gateId: "test",
+            gateName: "Test Suite",
+            passed: false,
+            error: "Tests failed",
+            duration: 1000,
+          },
+        ],
+        allGatesPassed: false,
+        requiredGatesFailed: ["test"],
+        verdict: "needs-continuation",
+      };
+
+      const prompt = service.generateContinuationPrompt(validation);
+
+      expect(prompt).toContain("Test Suite");
+      expect(prompt).toContain("failed");
+    });
+
+    it("should include suggested actions in prompt", () => {
+      const validation: CompletionValidation = {
+        claim: {
+          taskId: mockTaskId,
+          agentId: mockAgentId,
+          workspaceId: mockWorkspaceId,
+          claimedAt: new Date(),
+          message: "Done",
+          filesChanged: [],
+        },
+        gateResults: [],
+        allGatesPassed: false,
+        requiredGatesFailed: ["lint"],
+        verdict: "needs-continuation",
+        suggestedActions: ["Run: pnpm lint --fix", "Check code style"],
+      };
+
+      const prompt = service.generateContinuationPrompt(validation);
+
+      expect(prompt).toContain("pnpm lint --fix");
+      expect(prompt).toContain("Check code style");
+    });
+  });
+
+  describe("generateRejectionFeedback", () => {
+    it("should generate detailed rejection feedback", () => {
+      const validation: CompletionValidation = {
+        claim: {
+          taskId: mockTaskId,
+          agentId: mockAgentId,
+          workspaceId: mockWorkspaceId,
+          claimedAt: new Date(),
+          message: "Done",
+          filesChanged: [],
+        },
+        gateResults: [
+          {
+            gateId: "build",
+            gateName: "Build Check",
+            passed: false,
+            error: "Compilation error",
+            duration: 500,
+          },
+        ],
+        allGatesPassed: false,
+        requiredGatesFailed: ["build"],
+        verdict: "rejected",
+      };
+
+      const feedback = service.generateRejectionFeedback(validation);
+
+      expect(feedback).toContain("rejected");
+      expect(feedback).toContain("Build Check");
+    });
+  });
+
+  describe("getDefaultGates", () => {
+    it("should return default gates for workspace", () => {
+      const gates = service.getDefaultGates(mockWorkspaceId);
+
+      expect(gates).toBeDefined();
+      expect(gates.length).toBeGreaterThan(0);
+      expect(gates.some((g) => g.id === "build")).toBe(true);
+      expect(gates.some((g) => g.id === "lint")).toBe(true);
+      expect(gates.some((g) => g.id === "test")).toBe(true);
+    });
+
+    it("should return gates in correct order", () => {
+      const gates = service.getDefaultGates(mockWorkspaceId);
+
+      for (let i = 1; i < gates.length; i++) {
+        expect(gates[i].order).toBeGreaterThanOrEqual(gates[i - 1].order);
+      }
+    });
+  });
+
+  describe("recordContinuation", () => {
+    it("should record continuation attempt", () => {
+      const validation: CompletionValidation = {
+        claim: {
+          taskId: mockTaskId,
+          agentId: mockAgentId,
+          workspaceId: mockWorkspaceId,
+          claimedAt: new Date(),
+          message: "Done",
+          filesChanged: [],
+        },
+        gateResults: [],
+        allGatesPassed: false,
+        requiredGatesFailed: ["test"],
+        verdict: "needs-continuation",
+      };
+
+      expect(() => service.recordContinuation(mockTaskId, 1, validation)).not.toThrow();
+    });
+
+    it("should handle multiple continuation records", () => {
+      const validation: CompletionValidation = {
+        claim: {
+          taskId: mockTaskId,
+          agentId: mockAgentId,
+          workspaceId: mockWorkspaceId,
+          claimedAt: new Date(),
+          message: "Done",
+          filesChanged: [],
+        },
+        gateResults: [],
+        allGatesPassed: false,
+        requiredGatesFailed: ["test"],
+        verdict: "needs-continuation",
+      };
+
+      service.recordContinuation(mockTaskId, 1, validation);
+      service.recordContinuation(mockTaskId, 2, validation);
+
+      expect(() => service.recordContinuation(mockTaskId, 3, validation)).not.toThrow();
+    });
+  });
+});
diff --git a/apps/api/src/quality-orchestrator/quality-orchestrator.service.ts b/apps/api/src/quality-orchestrator/quality-orchestrator.service.ts
new file mode 100644
index 0000000..64f4940
--- /dev/null
+++ b/apps/api/src/quality-orchestrator/quality-orchestrator.service.ts
@@ -0,0 +1,316 @@
+import { Injectable, Logger } from "@nestjs/common";
+import { exec } from "child_process";
+import { promisify } from "util";
+import type {
+  QualityGate,
+  QualityGateResult,
+  CompletionClaim,
+  CompletionValidation,
+  OrchestrationConfig,
+} from "./interfaces";
+
+const execAsync = promisify(exec);
+
+/**
+ * Default quality gates for all workspaces
+ */
+const DEFAULT_GATES: QualityGate[] = [
+  {
+    id: "build",
+    name: "Build Check",
+    description: "Verify code compiles without errors",
+    type: "build",
+    command: "pnpm build",
+    required: true,
+    order: 1,
+  },
+  {
+    id: "lint",
+    name: "Lint Check",
+    description: "Code follows style guidelines",
+    type: "lint",
+    command: "pnpm lint",
+    required: true,
+    order: 2,
+  },
+  {
+    id: "test",
+    name: "Test Suite",
+    description: "All tests pass",
+    type: "test",
+    command: "pnpm test",
+    required: true,
+    order: 3,
+  },
+  {
+    id: "coverage",
+    name: "Coverage Check",
+    description: "Test coverage >= 85%",
+    type: "coverage",
+    command: "pnpm test:coverage",
+    expectedOutput: /All files.*[89]\d|100/,
+    required: false,
+    order: 4,
+  },
+];
+
+/**
+ * Quality Orchestrator Service
+ * Validates AI agent task completions and enforces quality gates
+ */
+@Injectable()
+export class QualityOrchestratorService {
+  private readonly logger = new Logger(QualityOrchestratorService.name);
+
+  /**
+   * Validate a completion claim against quality gates
+   */
+  async validateCompletion(
+    claim: CompletionClaim,
+    config: OrchestrationConfig
+  ): Promise<CompletionValidation> {
+    this.logger.log(
+      `Validating completion claim for task ${claim.taskId} by agent ${claim.agentId}`
+    );
+
+    // Sort gates by order
+    const sortedGates = [...config.gates].sort((a, b) => a.order - b.order);
+
+    // Run all gates
+    const gateResults: QualityGateResult[] = [];
+    for (const gate of sortedGates) {
+      const result = await this.runGate(gate);
+      gateResults.push(result);
+    }
+
+    // Analyze results
+    const allGatesPassed = gateResults.every((r) => r.passed);
+    const requiredGatesFailed = gateResults
+      .filter((r) => !r.passed)
+      .map((r) => r.gateId)
+      .filter((id) => {
+        const gate = config.gates.find((g) => g.id === id);
+        return gate?.required ?? false;
+      });
+
+    // Determine verdict
+    let verdict: "accepted" | "rejected" | "needs-continuation";
+    if (allGatesPassed) {
+      verdict = "accepted";
+    } else if (requiredGatesFailed.length > 0) {
+      verdict = "rejected";
+    } else if (config.strictMode) {
+      verdict = "rejected";
+    } else {
+      verdict = "accepted";
+    }
+
+    // Generate feedback and suggestions
+    const result: CompletionValidation = {
+      claim,
+      gateResults,
+      allGatesPassed,
+      requiredGatesFailed,
+      verdict,
+    };
+
+    if (verdict !== "accepted") {
+      result.feedback = this.generateRejectionFeedback(result);
+      result.suggestedActions = this.generateSuggestedActions(gateResults, config);
+    }
+
+    return result;
+  }
+
+  /**
+   * Run a single quality gate
+   */
+  async runGate(gate: QualityGate): Promise<QualityGateResult> {
+    this.logger.debug(`Running gate: ${gate.name} (${gate.id})`);
+    const startTime = Date.now();
+
+    try {
+      if (!gate.command) {
+        // Custom gates without commands always pass
+        return {
+          gateId: gate.id,
+          gateName: gate.name,
+          passed: true,
+          duration: Date.now() - startTime,
+        };
+      }
+
+      const { stdout, stderr } = await execAsync(gate.command, {
+        timeout: 300000, // 5 minute timeout
+        maxBuffer: 10 * 1024 * 1024, // 10MB buffer
+      });
+
+      const output = stdout + stderr;
+      let passed = true;
+
+      // Check expected output pattern if provided
+      if (gate.expectedOutput) {
+        if (typeof gate.expectedOutput === "string") {
+          passed = output.includes(gate.expectedOutput);
+        } else {
+          // RegExp
+          passed = gate.expectedOutput.test(output);
+        }
+      }
+
+      return {
+        gateId: gate.id,
+        gateName: gate.name,
+        passed,
+        output,
+        duration: Date.now() - startTime,
+      };
+    } catch (error) {
+      const errorMessage = error instanceof Error ? error.message : String(error);
+      return {
+        gateId: gate.id,
+        gateName: gate.name,
+        passed: false,
+        error: errorMessage,
+        duration: Date.now() - startTime,
+      };
+    }
+  }
+
+  /**
+   * Check if continuation is needed
+   */
+  shouldContinue(
+    validation: CompletionValidation,
+    continuationCount: number,
+    config: OrchestrationConfig
+  ): boolean {
+    // Don't continue if already accepted
+    if (validation.verdict === "accepted") {
+      return false;
+    }
+
+    // Don't continue if at max continuations
+    if (continuationCount >= config.maxContinuations) {
+      return false;
+    }
+
+    return true;
+  }
+
+  /**
+   * Generate continuation prompt based on failures
+   */
+  generateContinuationPrompt(validation: CompletionValidation): string {
+    const failedGates = validation.gateResults.filter((r) => !r.passed);
+
+    let prompt = "Quality gates failed. Please address the following issues:\n\n";
+
+    for (const gate of failedGates) {
+      prompt += `**${gate.gateName}** failed:\n`;
+      if (gate.error) {
+        prompt += `  Error: ${gate.error}\n`;
+      }
+      if (gate.output) {
+        const outputPreview = gate.output.substring(0, 500);
+        prompt += `  Output: ${outputPreview}\n`;
+      }
+      prompt += "\n";
+    }
+
+    if (validation.suggestedActions && validation.suggestedActions.length > 0) {
+      prompt += "Suggested actions:\n";
+      for (const action of validation.suggestedActions) {
+        prompt += `- ${action}\n`;
+      }
+    }
+
+    return prompt;
+  }
+
+  /**
+   * Generate rejection feedback
+   */
+  generateRejectionFeedback(validation: CompletionValidation): string {
+    const failedGates = validation.gateResults.filter((r) => !r.passed);
+    const failedCount = String(failedGates.length);
+
+    let feedback = `Task completion rejected. ${failedCount} quality gate(s) failed:\n\n`;
+
+    for (const gate of failedGates) {
+      feedback += `- ${gate.gateName}: `;
+      if (gate.error) {
+        feedback += gate.error;
+      } else {
+        feedback += "Failed validation";
+      }
+      feedback += "\n";
+    }
+
+    return feedback;
+  }
+
+  /**
+   * Generate suggested actions based on gate failures
+   */
+  private generateSuggestedActions(
+    gateResults: QualityGateResult[],
+    config: OrchestrationConfig
+  ): string[] {
+    const actions: string[] = [];
+    const failedGates = gateResults.filter((r) => !r.passed);
+
+    for (const result of failedGates) {
+      const gate = config.gates.find((g) => g.id === result.gateId);
+      if (!gate) continue;
+
+      switch (gate.type) {
+        case "build":
+          actions.push("Fix compilation errors in the code");
+          actions.push("Run: pnpm build");
+          break;
+        case "lint":
+          actions.push("Fix linting issues");
+          actions.push("Run: pnpm lint --fix");
+          break;
+        case "test":
+          actions.push("Fix failing tests");
+          actions.push("Run: pnpm test");
+          break;
+        case "coverage":
+          actions.push("Add tests to improve coverage to >= 85%");
+          actions.push("Run: pnpm test:coverage");
+          break;
+        default:
+          if (gate.command) {
+            actions.push(`Run: ${gate.command}`);
+          }
+      }
+    }
+
+    return actions;
+  }
+
+  /**
+   * Get default gates for a workspace
+   */
+  getDefaultGates(workspaceId: string): QualityGate[] {
+    // For now, return the default gates
+    // In the future, this could be customized per workspace from database
+    this.logger.debug(`Getting default gates for workspace ${workspaceId}`);
+    return DEFAULT_GATES;
+  }
+
+  /**
+   * Track continuation attempts
+   */
+  recordContinuation(taskId: string, attempt: number, validation: CompletionValidation): void {
+    const attemptStr = String(attempt);
+    const failedCount = String(validation.requiredGatesFailed.length);
+    this.logger.log(`Recording continuation attempt ${attemptStr} for task ${taskId}`);
+
+    // Store continuation record
+    // For now, just log it. In production, this would be stored in the database
+    this.logger.debug(`Continuation ${attemptStr}: ${failedCount} required gates failed`);
+  }
+}