diff --git a/frontend/src/app/components/agent-card/agent-card.component.html b/frontend/src/app/components/agent-card/agent-card.component.html
index ebc18b0..12cbd71 100644
--- a/frontend/src/app/components/agent-card/agent-card.component.html
+++ b/frontend/src/app/components/agent-card/agent-card.component.html
@@ -1,6 +1,7 @@
 <article
   class="agent-card"
   [class]="'agent-card--' + status()"
+  role="article"
   [attr.aria-label]="'Agent card: ' + statusLabel() + ' status'"
   [style.--agent-status-color]="statusColorVar()"
   [style.--agent-status-bg]="statusBgVar()"
@@ -10,18 +11,14 @@
 
   <!-- Card body -->
   <div class="agent-card__body">
-    <!-- Header row: status dot + status label + channel + last activity -->
+    <!-- Header row: status badge + channel + last activity -->
     <div class="agent-card__header">
       <div class="agent-card__status-row">
-        <span
-          class="status-dot agent-card__dot"
-          [ngClass]="[statusDotClass()]"
-          [attr.aria-label]="statusLabel() + ' status indicator'"
-          role="status"
-        ></span>
-        <span class="agent-card__status-label" [style.color]="statusColorVar()">
-          {{ statusLabel() }}
-        </span>
+        <!-- Agent Status Badge (CUB-48) -->
+        <app-agent-status-badge
+          [status]="status()"
+          [showLabel]="true"
+        ></app-agent-status-badge>
       </div>
       <div class="agent-card__meta">
         @if (channel()) {
@@ -39,33 +36,23 @@
       <p class="agent-card__task">{{ task() }}</p>
     }
 
-    <!-- Progress bar -->
+    <!-- Task Progress Bar (CUB-44) -->
     @if (showProgress()) {
-      <div class="agent-card__progress">
-        <mat-progress-bar
-          mode="determinate"
-          [value]="progress()"
-          [attr.aria-label]="'Task progress: ' + progress() + '%'"
-        ></mat-progress-bar>
-        <div class="agent-card__progress-info">
-          <span class="text-mono">{{ progress() }}%</span>
-        </div>
-      </div>
+      <app-task-progress-bar
+        [progress]="progress()"
+        [showElapsed]="false"
+      ></app-task-progress-bar>
     }
 
-    <!-- Footer: session key (truncated) + jump button -->
+    <!-- Footer: session key (truncated) + Quick-Jump Button (CUB-46) -->
     <div class="agent-card__footer">
       <span class="agent-card__session text-mono" [matTooltip]="sessionKey()">
         {{ sessionKey().length > 28 ? sessionKey().substring(0, 28) + '…' : sessionKey() }}
       </span>
-      <button
-        mat-icon-button
-        class="agent-card__jump"
-        [attr.aria-label]="'Jump to agent session'"
-        matTooltip="Jump to session"
-      >
-        <mat-icon>arrow_forward</mat-icon>
-      </button>
+      <app-quick-jump-button
+        [sessionKey]="sessionKey()"
+        (jumpClick)="jumpClick.emit($event)"
+      ></app-quick-jump-button>
     </div>
   </div>
 </article>
\ No newline at end of file
diff --git a/frontend/src/app/components/agent-card/agent-card.component.scss b/frontend/src/app/components/agent-card/agent-card.component.scss
index ba53328..a6f8716 100644
--- a/frontend/src/app/components/agent-card/agent-card.component.scss
+++ b/frontend/src/app/components/agent-card/agent-card.component.scss
@@ -1,7 +1,9 @@
 // ============================================================================
-// Agent Card Styles — M3 Tactical Dark
-// Per spec Section 7.3: Agent Card Component
-// Section 7.5: Animation Specs
+// Agent Card Styles — M3 Tactical Dark (Final Integration, CUB-45)
+// Uses sub-components:
+//   - AgentStatusBadge (CUB-48) for status display
+//   - TaskProgressBar (CUB-44) for progress
+//   - QuickJumpButton (CUB-46) for navigation
 // ============================================================================
 
 // ---------------------------------------------------------------------------
@@ -78,17 +80,6 @@
   gap: 8px;
 }
 
-.agent-card__dot {
-  flex-shrink: 0;
-}
-
-.agent-card__status-label {
-  font-size: 14px;
-  font-weight: 600;
-  text-transform: uppercase;
-  letter-spacing: 0.05em;
-}
-
 .agent-card__meta {
   display: flex;
   align-items: center;
@@ -129,23 +120,11 @@
 }
 
 // ---------------------------------------------------------------------------
-// Progress Bar
+// Task Progress Bar (CUB-44 sub-component)
+// Override the sub-component's progress bar colors to match status color
 // ---------------------------------------------------------------------------
-.agent-card__progress {
-  display: flex;
-  flex-direction: column;
-  gap: 4px;
-}
-
-.agent-card__progress-info {
-  display: flex;
-  justify-content: flex-end;
-  font-size: 12px;
-  color: var(--cc-on-surface-variant);
-}
-
-// Override M3 progress bar track to use status color
-.agent-card__progress .mat-mdc-progress-bar {
+:host ::ng-deep .task-progress-bar .mat-mdc-progress-bar,
+.agent-card .mat-mdc-progress-bar {
   --mdc-linear-progress-active-indicator-color: var(--agent-status-color);
   --mdc-linear-progress-track-color: var(--agent-status-bg);
 }
@@ -172,53 +151,6 @@
   min-width: 0;
 }
 
-// ---------------------------------------------------------------------------
-// Quick-Jump Button — M3 FilledTonalIconButton style
-// Per spec: → Jump button using M3 FilledTonalIconButton
-// ---------------------------------------------------------------------------
-.agent-card__jump {
-  // M3 FilledTonal style: secondary container color
-  --mdc-icon-button-icon-color: var(--cc-on-surface);
-  background-color: var(--cc-surface-container-high);
-  border-radius: 50%;
-  width: 40px;
-  height: 40px;
-  flex-shrink: 0;
-
-  // State layer overlay on hover (8% primary)
-  &::before {
-    content: '';
-    position: absolute;
-    inset: 0;
-    border-radius: 50%;
-    background-color: rgba(255, 255, 255, 0.08);
-    opacity: 0;
-    transition: opacity 150ms ease;
-    pointer-events: none;
-  }
-
-  &:hover::before {
-    opacity: 1;
-  }
-
-  // Focus-visible ring
-  &:focus-visible {
-    outline: 3px solid var(--status-active);
-    outline-offset: 2px;
-  }
-
-  // Active state
-  &:active {
-    transform: scale(0.95);
-  }
-
-  .mat-icon {
-    font-size: 20px;
-    width: 20px;
-    height: 20px;
-  }
-}
-
 // ---------------------------------------------------------------------------
 // Status-specific card backgrounds (subtle tint)
 // ---------------------------------------------------------------------------
@@ -236,15 +168,6 @@
 
 // Idle and offline use default surface-container
 
-// ---------------------------------------------------------------------------
-// Touch-First Targets
-// ---------------------------------------------------------------------------
-// Minimum touch target: 48px (M3 standard)
-.agent-card__jump {
-  min-width: 48px;
-  min-height: 48px;
-}
-
 // ---------------------------------------------------------------------------
 // Accessibility: Reduced Motion
 // ---------------------------------------------------------------------------
@@ -252,14 +175,6 @@
   .agent-card {
     transition: none;
   }
-
-  .agent-card__jump {
-    transition: none;
-
-    &:active {
-      transform: none;
-    }
-  }
 }
 
 // ---------------------------------------------------------------------------
diff --git a/frontend/src/app/components/agent-card/agent-card.component.ts b/frontend/src/app/components/agent-card/agent-card.component.ts
index 6ccc7be..28dfe71 100644
--- a/frontend/src/app/components/agent-card/agent-card.component.ts
+++ b/frontend/src/app/components/agent-card/agent-card.component.ts
@@ -1,19 +1,31 @@
 // ============================================================================
-// Agent Card Component
-// Per spec Section 7.3: Agent Card Component Interface
-// Section 7.5: Animation Specs
+// Agent Card Component — Final Integration
+// Per CUB-45: Compose AgentCard from all sub-components.
+//   - AgentStatusBadge (CUB-48) for status display
+//   - TaskProgressBar (CUB-44) for progress indication
+//   - QuickJumpButton (CUB-46) for session navigation
+// Layout: left-border accent, aria-labels, role="article"
 // ============================================================================
-import { ChangeDetectionStrategy, Component, input, computed } from '@angular/core';
+import { ChangeDetectionStrategy, Component, EventEmitter, Output, input, computed } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { MatIconModule } from '@angular/material/icon';
-import { MatButtonModule } from '@angular/material/button';
-import { MatProgressBarModule } from '@angular/material/progress-bar';
 import { MatTooltipModule } from '@angular/material/tooltip';
-import { AgentStatus } from '../../models/agent.model';
+
+// Sub-components (CUB-48, CUB-44, CUB-46)
+import { AgentStatusBadgeComponent } from '../agent-status-badge';
+import { TaskProgressBarComponent } from '../task-progress-bar';
+import { QuickJumpButtonComponent } from '../quick-jump-button';
+
+import { AgentStatus } from '../../models';
 
 /**
  * AgentCard displays a single agent's status in the Command Hub grid.
  *
+ * Composes three sub-components:
+ *  - AgentStatusBadge: colored pill with pulse animation (CUB-48)
+ *  - TaskProgressBar: determinate progress with optional elapsed time (CUB-44)
+ *  - QuickJumpButton: M3 FilledTonal icon button for session navigation (CUB-46)
+ *
  * Inputs:
  * - status: AgentStatus — current agent status
  * - task: string — current task description
@@ -22,9 +34,14 @@ import { AgentStatus } from '../../models/agent.model';
  * - channel: string — communication channel (e.g., "telegram")
  * - lastActivity: Date — timestamp of last activity
  *
+ * Outputs:
+ * - jumpClick: string — emitted when Quick-Jump button is clicked, carries sessionKey
+ *
  * Accessibility:
  * - role="article" on the card element
- * - aria-labels for status badge and interactive elements
+ * - aria-label on the card summarizing status
+ * - aria-label on the progress bar (via TaskProgressBar)
+ * - aria-label on the Quick-Jump button (via QuickJumpButton)
  * - focus-visible outlines for keyboard navigation
  */
 @Component({
@@ -33,15 +50,21 @@ import { AgentStatus } from '../../models/agent.model';
   imports: [
     CommonModule,
     MatIconModule,
-    MatButtonModule,
-    MatProgressBarModule,
     MatTooltipModule,
+    // Sub-components
+    AgentStatusBadgeComponent,
+    TaskProgressBarComponent,
+    QuickJumpButtonComponent,
   ],
   templateUrl: './agent-card.component.html',
   styleUrl: './agent-card.component.scss',
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class AgentCardComponent {
+  // ---------------------------------------------------------------------------
+  // Inputs (all 6 required by CUB-45 definition of done)
+  // ---------------------------------------------------------------------------
+
   /** Current agent status */
   readonly status = input.required<AgentStatus>();
 
@@ -60,6 +83,17 @@ export class AgentCardComponent {
   /** Timestamp of last activity */
   readonly lastActivity = input<Date>(new Date());
 
+  // ---------------------------------------------------------------------------
+  // Outputs
+  // ---------------------------------------------------------------------------
+
+  /** Emitted when the Quick-Jump button is clicked with the session key. */
+  @Output() readonly jumpClick = new EventEmitter<string>();
+
+  // ---------------------------------------------------------------------------
+  // Computed values
+  // ---------------------------------------------------------------------------
+
   /** Map status to CSS custom property name for dynamic color binding */
   readonly statusColorVar = computed(() => {
     const map: Record<AgentStatus, string> = {
@@ -84,7 +118,7 @@ export class AgentCardComponent {
     return map[this.status()];
   });
 
-  /** Human-readable status label */
+  /** Human-readable status label (delegates to AgentStatusBadgeComponent) */
   readonly statusLabel = computed(() => {
     const map: Record<AgentStatus, string> = {
       active: 'Active',
@@ -96,9 +130,6 @@ export class AgentCardComponent {
     return map[this.status()];
   });
 
-  /** CSS class for status dot animation */
-  readonly statusDotClass = computed(() => `status-dot--${this.status()}`);
-
   /** Format last activity as relative time string */
   readonly lastActivityText = computed(() => {
     const now = Date.now();
diff --git a/frontend/src/app/components/agent-card/index.ts b/frontend/src/app/components/agent-card/index.ts
index f9c7df5..30b3caf 100644
--- a/frontend/src/app/components/agent-card/index.ts
+++ b/frontend/src/app/components/agent-card/index.ts
@@ -1 +1,6 @@
+// ============================================================================
+// Agent Card — Barrel Export
+// CUB-45: Final integration with sub-components
+// ============================================================================
+
 export { AgentCardComponent } from './agent-card.component';
\ No newline at end of file
diff --git a/frontend/src/app/components/index.ts b/frontend/src/app/components/index.ts
index 7e48ebb..6cf0ef0 100644
--- a/frontend/src/app/components/index.ts
+++ b/frontend/src/app/components/index.ts
@@ -1 +1,8 @@
-export * from './quick-jump-button/quick-jump-button.component';
\ No newline at end of file
+// ============================================================================
+// Components Barrel Export
+// ============================================================================
+
+export * from './agent-card';
+export * from './agent-status-badge';
+export * from './task-progress-bar';
+export * from './quick-jump-button';
\ No newline at end of file
diff --git a/frontend/src/app/components/quick-jump-button/index.ts b/frontend/src/app/components/quick-jump-button/index.ts
new file mode 100644
index 0000000..72518de
--- /dev/null
+++ b/frontend/src/app/components/quick-jump-button/index.ts
@@ -0,0 +1,6 @@
+// ============================================================================
+// Quick-Jump Button — Barrel Export
+// CUB-46
+// ============================================================================
+
+export { QuickJumpButtonComponent } from './quick-jump-button.component';
\ No newline at end of file
diff --git a/frontend/src/app/components/quick-jump-button/quick-jump-button.component.ts b/frontend/src/app/components/quick-jump-button/quick-jump-button.component.ts
index 899fc1d..927dc9e 100644
--- a/frontend/src/app/components/quick-jump-button/quick-jump-button.component.ts
+++ b/frontend/src/app/components/quick-jump-button/quick-jump-button.component.ts
@@ -1,4 +1,4 @@
-import { ChangeDetectionStrategy, Component, EventEmitter, Output } from '@angular/core';
+import { ChangeDetectionStrategy, Component, EventEmitter, Input, Output } from '@angular/core';
 import { MatIconButton } from '@angular/material/button';
 import { MatIcon } from '@angular/material/icon';
 
@@ -20,12 +20,13 @@ import { MatIcon } from '@angular/material/icon';
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class QuickJumpButtonComponent {
+  /** The session key to navigate to. Set by the parent agent card. */
+  @Input()
+  sessionKey = '';
+
   /** Emitted when the button is clicked, carrying the session key for navigation. */
   @Output() jumpClick = new EventEmitter<string>();
 
-  /** The session key to navigate to. Set by the parent agent card. */
-  sessionKey = '';
-
   onJumpClick(): void {
     this.jumpClick.emit(this.sessionKey);
   }