diff --git a/src/dispatch/types.ts b/src/dispatch/types.ts
index 137774f..4d5fb65 100644
--- a/src/dispatch/types.ts
+++ b/src/dispatch/types.ts
@@ -1,8 +1,8 @@
 /**
  * Dispatch Module Types
  *
- * Port interface for task dispatch management.
- * DispatchManager is the PORT. Implementations are ADAPTERS.
+ * Port interfaces for task and phase dispatch management.
+ * DispatchManager and PhaseDispatchManager are PORTS. Implementations are ADAPTERS.
  *
  * This follows the same hexagonal architecture pattern as EventBus and AgentManager:
  * - Interface defines the contract (port)
@@ -116,3 +116,107 @@ export interface DispatchManager {
     blocked: Array<{ taskId: string; reason: string }>;
   }>;
 }
+
+// =============================================================================
+// Phase Dispatch Domain Types
+// =============================================================================
+
+/**
+ * Represents a phase queued for dispatch.
+ * Phases are dispatched when all dependencies complete.
+ */
+export interface QueuedPhase {
+  /** Unique identifier for the phase */
+  phaseId: string;
+  /** Initiative this phase belongs to */
+  initiativeId: string;
+  /** When the phase was queued */
+  queuedAt: Date;
+  /** Phase IDs that must complete before this phase can be dispatched */
+  dependsOn: string[];
+}
+
+/**
+ * Result of a phase dispatch operation.
+ * Success means phase was dispatched; failure means dispatch couldn't happen.
+ */
+export interface PhaseDispatchResult {
+  /** Whether the phase was successfully dispatched */
+  success: boolean;
+  /** ID of the phase that was dispatched */
+  phaseId: string;
+  /** Reason why dispatch failed (only present on failure) */
+  reason?: string;
+}
+
+// =============================================================================
+// PhaseDispatchManager Port Interface
+// =============================================================================
+
+/**
+ * PhaseDispatchManager Port Interface
+ *
+ * Manages phase dispatch queue with dependency ordering.
+ * Enables queuing and dispatching phases based on their dependencies.
+ *
+ * Follows exact patterns from DispatchManager for tasks.
+ */
+export interface PhaseDispatchManager {
+  /**
+   * Queue a phase for dispatch.
+   * Phase will be dispatched when all dependencies complete.
+   *
+   * @param phaseId - ID of the phase to queue
+   */
+  queuePhase(phaseId: string): Promise<void>;
+
+  /**
+   * Get next dispatchable phase.
+   * Returns phase with all dependencies complete.
+   * Returns null if no phases ready.
+   *
+   * @returns Next dispatchable phase or null
+   */
+  getNextDispatchablePhase(): Promise<QueuedPhase | null>;
+
+  /**
+   * Dispatch next available phase.
+   * Finds next ready phase and dispatches it.
+   * Returns dispatch result.
+   *
+   * @returns Result of the dispatch operation
+   */
+  dispatchNextPhase(): Promise<PhaseDispatchResult>;
+
+  /**
+   * Mark a phase as complete.
+   * Triggers re-evaluation of dependent phases.
+   *
+   * @param phaseId - ID of the completed phase
+   */
+  completePhase(phaseId: string): Promise<void>;
+
+  /**
+   * Mark a phase as blocked.
+   * Phase will not be dispatched until unblocked.
+   *
+   * @param phaseId - ID of the phase to block
+   * @param reason - Reason for blocking
+   */
+  blockPhase(phaseId: string, reason: string): Promise<void>;
+
+  /**
+   * Get current phase queue state.
+   * Returns all queued phases with their dispatch readiness.
+   *
+   * @returns Queue state with queued, ready, and blocked phases
+   */
+  getPhaseQueueState(): Promise<{
+    /** All queued phases */
+    queued: QueuedPhase[];
+    /** Phases ready for dispatch (all dependencies complete) */
+    ready: QueuedPhase[];
+    /** Phases that are blocked */
+    blocked: Array<{ phaseId: string; reason: string }>;
+  }>;
+}