diff --git a/docs/implementation/task-f3-approval-workflow-builder-foundation.md b/docs/implementation/task-f3-approval-workflow-builder-foundation.md
new file mode 100644
index 0000000..f321df5
--- /dev/null
+++ b/docs/implementation/task-f3-approval-workflow-builder-foundation.md
@@ -0,0 +1,112 @@
+# Task F.3: Approval Workflow Builder Foundation
+
+## Summary
+
+This task upgrades the existing approval workflow settings surface into a safer workflow builder foundation. Admins can now manage workflow metadata and steps through dedicated APIs and a richer settings UI without editing seed data directly.
+
+## Delivered
+
+- Extended approval workflow schema in [src/db/schema.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/db/schema.ts):
+  - workflow: `description`, `isSystem`, `createdBy`, `updatedBy`
+  - step: `approvalMode`
+- Added migration [drizzle/0003_workflow_builder_foundation.sql](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/drizzle/0003_workflow_builder_foundation.sql)
+- Added builder validation schemas:
+  - [src/features/crm/approval/schemas/approval-workflow.schema.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/crm/approval/schemas/approval-workflow.schema.ts)
+  - [src/features/crm/approval/schemas/approval-step.schema.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/crm/approval/schemas/approval-step.schema.ts)
+- Added builder server rules in [src/features/crm/approval/server/workflow-builder.service.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/crm/approval/server/workflow-builder.service.ts)
+- Replaced the settings APIs with builder-aware behavior under:
+  - [src/app/api/crm/settings/approval-workflows/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/route.ts)
+  - [src/app/api/crm/settings/approval-workflows/[id]/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/[id]/route.ts)
+  - [src/app/api/crm/settings/approval-workflows/[id]/clone/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/[id]/clone/route.ts)
+  - [src/app/api/crm/settings/approval-workflows/[id]/activate/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/[id]/activate/route.ts)
+  - [src/app/api/crm/settings/approval-workflows/[id]/deactivate/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/[id]/deactivate/route.ts)
+  - [src/app/api/crm/settings/approval-workflows/[id]/steps/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/[id]/steps/route.ts)
+  - [src/app/api/crm/settings/approval-workflows/[id]/steps/[stepId]/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/[id]/steps/[stepId]/route.ts)
+  - [src/app/api/crm/settings/approval-workflows/[id]/steps/reorder/route.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/app/api/crm/settings/approval-workflows/[id]/steps/reorder/route.ts)
+- Rebuilt workflow builder client contracts and UI in:
+  - [src/features/foundation/approval/types.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/foundation/approval/types.ts)
+  - [src/features/foundation/approval/service.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/foundation/approval/service.ts)
+  - [src/features/foundation/approval/queries.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/foundation/approval/queries.ts)
+  - [src/features/foundation/approval/mutations.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/foundation/approval/mutations.ts)
+  - [src/features/foundation/approval/components/approval-workflow-settings.tsx](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/features/foundation/approval/components/approval-workflow-settings.tsx)
+
+## Workflow Safety Strategy
+
+F.3 uses the recommended lock strategy from the task:
+
+- if a workflow has ever been used by any approval request, the workflow becomes locked for metadata edits
+- locked workflows also block step create, update, delete, and reorder
+- admins must clone a used workflow before changing its behavior
+
+This prevents historical approval requests from silently changing meaning after configuration edits.
+
+## Clone and Activation Rules
+
+- clone copies workflow metadata and all active steps
+- cloned workflows start inactive
+- deactivation is blocked when:
+  - active approval requests still use the workflow
+  - active approval matrices still point to the workflow
+- deletion is blocked when:
+  - any approval request has ever used the workflow
+  - active approval matrices still point to the workflow
+
+## Step Builder Rules
+
+- steps are managed individually instead of replacing the whole step list
+- create supports inserting at a target `stepNumber`
+- delete reorders remaining steps to continuous numbering
+- reorder uses explicit `orderedStepIds`
+- active workflows must retain at least one required step
+
+## Approval Mode Support
+
+Stored step modes:
+
+- `sequential`
+- `any_one`
+- `all_required`
+
+Current runtime still executes sequentially only. The builder UI marks non-sequential modes as stored for future use instead of pretending they already affect runtime behavior.
+
+## Permissions Added
+
+Extended in [src/lib/auth/rbac.ts](/c:/Users/mtpphtaps/Documents/gitea/alla-allaos-fullstack/src/lib/auth/rbac.ts):
+
+- `crm.approval.workflow.clone`
+- `crm.approval.workflow.activate`
+- `crm.approval.workflow.deactivate`
+- `crm.approval.workflow.step.manage`
+
+Existing workflow read/create/update/delete permissions remain in use.
+
+## Audit Actions
+
+Builder routes now emit:
+
+- `create_approval_workflow`
+- `update_approval_workflow`
+- `delete_approval_workflow`
+- `clone_approval_workflow`
+- `activate_approval_workflow`
+- `deactivate_approval_workflow`
+- `create_approval_step`
+- `update_approval_step`
+- `delete_approval_step`
+- `reorder_approval_steps`
+
+## Matrix Integration Hook
+
+Workflow list API now accepts optional filters:
+
+- `entityType`
+- `activeOnly`
+
+This keeps Approval Matrix integration future-ready without requiring F.3 to build the matrix UI itself.
+
+## Known Limitations
+
+- approval runtime still executes sequentially even if a step stores `any_one` or `all_required`
+- no drag-and-drop builder is included; reorder uses simple up/down actions
+- no workflow version table exists yet; lock-and-clone is the current compatibility strategy
+- matrix admin UI is still outside this task scope
diff --git a/drizzle/0003_workflow_builder_foundation.sql b/drizzle/0003_workflow_builder_foundation.sql
new file mode 100644
index 0000000..a6b4efa
--- /dev/null
+++ b/drizzle/0003_workflow_builder_foundation.sql
@@ -0,0 +1,14 @@
+ALTER TABLE "crm_approval_workflows"
+ADD COLUMN "description" text;
+--> statement-breakpoint
+ALTER TABLE "crm_approval_workflows"
+ADD COLUMN "is_system" boolean DEFAULT false NOT NULL;
+--> statement-breakpoint
+ALTER TABLE "crm_approval_workflows"
+ADD COLUMN "created_by" text NOT NULL DEFAULT '';
+--> statement-breakpoint
+ALTER TABLE "crm_approval_workflows"
+ADD COLUMN "updated_by" text NOT NULL DEFAULT '';
+--> statement-breakpoint
+ALTER TABLE "crm_approval_steps"
+ADD COLUMN "approval_mode" text DEFAULT 'sequential' NOT NULL;
diff --git a/drizzle/meta/_journal.json b/drizzle/meta/_journal.json
index 0104412..3c37a29 100644
--- a/drizzle/meta/_journal.json
+++ b/drizzle/meta/_journal.json
@@ -22,6 +22,13 @@
       "when": 1782604800000,
       "tag": "0002_calm_approval_matrix",
       "breakpoints": true
+    },
+    {
+      "idx": 3,
+      "version": "7",
+      "when": 1782691200000,
+      "tag": "0003_workflow_builder_foundation",
+      "breakpoints": true
     }
   ]
 }
diff --git a/next-env.d.ts b/next-env.d.ts
index 9edff1c..c4b7818 100644
--- a/next-env.d.ts
+++ b/next-env.d.ts
@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.
diff --git a/plans/task-f.3.md b/plans/task-f.3.md
new file mode 100644
index 0000000..ae1dea0
--- /dev/null
+++ b/plans/task-f.3.md
@@ -0,0 +1,504 @@
+# Task F.3: Approval Workflow Builder Foundation
+
+## Status
+
+Planned
+
+## Objective
+
+Build the Approval Workflow Builder foundation so admins can manage approval workflows and workflow steps without changing code or seed data.
+
+This task extends the F.2 Approval Matrix Foundation by making workflow definitions editable and maintainable through service/API/UI foundations.
+
+The goal is to support:
+
+* workflow list
+* workflow create/edit
+* workflow clone
+* workflow activate/deactivate
+* step add/update/delete
+* step reorder
+* matrix-ready workflow selection
+* safe compatibility with existing approval requests
+
+This task does not implement Notification, Reminder, Escalation, or full parallel approval behavior yet.
+
+---
+
+## Mandatory Review
+
+Review before implementation:
+
+* `AGENTS.md`
+* `docs/standards/project-foundations.md`
+* `docs/standards/task-catalog.md`
+* `docs/implementation/task-f2-approval-matrix-foundation.md`
+* existing Approval implementation
+* existing Approval Matrix implementation
+* `src/db/schema.ts`
+* `src/features/crm/approval/**`
+* `src/features/foundation/approval/**`
+* `src/features/foundation/audit-log/**`
+* `src/lib/auth/rbac.ts`
+* `docs/security/crm-authorization-boundaries.md`
+
+---
+
+## Current Foundation
+
+Already available:
+
+```txt
+crm_approval_workflows
+crm_approval_steps
+crm_approval_requests
+crm_approval_actions
+crm_approval_matrices
+
+Approval matrix resolver
+Quotation submit approval flow
+Default quotation matrix
+Approval audit foundation
+```
+
+Current limitation:
+
+```txt
+Approval workflows and steps are mostly seed/config driven.
+```
+
+This task makes them manageable through Builder APIs and UI foundation.
+
+---
+
+## Business Requirement
+
+Admin must be able to configure approval workflows such as:
+
+```txt
+Quotation Standard Approval
+  1. Sales Manager
+  2. Department Manager
+  3. CEO
+
+Quotation Crane Executive Approval
+  1. Sales Manager
+  2. Product Head
+  3. Finance
+  4. CEO
+```
+
+Approval Matrix from F.2 can then point to any active workflow.
+
+---
+
+## Scope F.3.1 Workflow Builder Domain Rules
+
+Workflow has:
+
+```txt
+code
+name
+entityType
+description
+isActive
+steps
+```
+
+Step has:
+
+```txt
+stepNumber
+roleCode
+roleName
+approvalMode
+isRequired
+```
+
+Recommended `approvalMode` values:
+
+```txt
+sequential
+any_one
+all_required
+```
+
+For F.3 behavior:
+
+* `sequential` remains the only fully executed runtime mode if current approval engine supports only sequential
+* `any_one` and `all_required` can be stored for future use if schema supports it
+* if runtime does not support non-sequential modes, UI/API must clearly mark them as future/disabled
+
+---
+
+## Scope F.3.2 Schema Review / Extension
+
+Review existing tables:
+
+```txt
+crm_approval_workflows
+crm_approval_steps
+```
+
+Add missing fields only if needed:
+
+Recommended workflow fields:
+
+```txt
+description text null
+is_system boolean default false
+created_by text
+updated_by text
+```
+
+Recommended step fields:
+
+```txt
+approval_mode text default 'sequential'
+approver_type text default 'role'
+approver_ref text null
+sort_order integer
+```
+
+Definitions:
+
+```txt
+approver_type = role | user | permission | manager
+approver_ref = role code, user id, permission code, or manager rule key
+```
+
+If current phase should stay simple, use only:
+
+```txt
+roleCode
+roleName
+stepNumber
+isRequired
+```
+
+and defer advanced approver resolution to later tasks.
+
+---
+
+## Scope F.3.3 Workflow CRUD API
+
+Create or extend settings APIs:
+
+```txt
+GET    /api/crm/settings/approval-workflows
+POST   /api/crm/settings/approval-workflows
+GET    /api/crm/settings/approval-workflows/[id]
+PATCH  /api/crm/settings/approval-workflows/[id]
+DELETE /api/crm/settings/approval-workflows/[id]
+POST   /api/crm/settings/approval-workflows/[id]/clone
+POST   /api/crm/settings/approval-workflows/[id]/activate
+POST   /api/crm/settings/approval-workflows/[id]/deactivate
+```
+
+Rules:
+
+* delete should be soft delete
+* do not allow hard delete
+* do not allow deleting workflow used by an active approval request
+* deactivation allowed only if not used by active matrix or active approval request unless forced by admin policy
+* clone creates a new workflow and copies steps
+* code must be unique within organization
+
+---
+
+## Scope F.3.4 Step Management API
+
+Create:
+
+```txt
+GET    /api/crm/settings/approval-workflows/[id]/steps
+POST   /api/crm/settings/approval-workflows/[id]/steps
+PATCH  /api/crm/settings/approval-workflows/[id]/steps/[stepId]
+DELETE /api/crm/settings/approval-workflows/[id]/steps/[stepId]
+POST   /api/crm/settings/approval-workflows/[id]/steps/reorder
+```
+
+Rules:
+
+* step numbers must be continuous: 1, 2, 3...
+* deleting a step reorders remaining steps
+* reorder must be transactional
+* at least one required step must remain for active workflow
+* cannot modify steps of workflow with active approval requests unless versioning is implemented
+* F.3 may choose strict lock behavior:
+
+  * if workflow is already used by any approval request, require clone before edit
+
+Recommended:
+
+```txt
+Existing used workflow = locked
+Edit by clone only
+```
+
+This prevents historical approval requests from changing meaning retroactively.
+
+---
+
+## Scope F.3.5 Workflow Version Safety
+
+Implement one of these strategies:
+
+### Option A: Lock Used Workflows
+
+If workflow has ever been used in approval request:
+
+```txt
+workflow cannot be edited
+steps cannot be edited
+admin must clone workflow
+```
+
+This is recommended for F.3.
+
+### Option B: Versioned Workflows
+
+Create workflow versions.
+
+This is more powerful but larger scope.
+
+Recommendation:
+
+```txt
+Use Option A in F.3.
+Defer versioned workflows to future task if needed.
+```
+
+---
+
+## Scope F.3.6 Workflow Builder UI
+
+Create settings page:
+
+```txt
+/dashboard/crm/settings/approval-workflows
+```
+
+Required UI:
+
+* workflow list
+* create workflow
+* edit workflow metadata
+* clone workflow
+* activate/deactivate workflow
+* view steps
+* add step
+* edit step
+* delete step
+* reorder steps
+* usage warning if workflow is locked
+
+Use existing UI conventions:
+
+```txt
+shadcn/ui
+card layout
+dialog/sheet forms
+table
+bento/card section where useful
+design tokens only
+```
+
+No drag-and-drop is required in F.3. Simple up/down reorder is enough.
+
+---
+
+## Scope F.3.7 Matrix Integration UI Hook
+
+Approval Matrix settings must be able to select an active workflow.
+
+If F.2 has no matrix UI yet, expose workflow list API so future matrix UI can consume it.
+
+Workflow list API should support:
+
+```txt
+entityType filter
+active only filter
+```
+
+---
+
+## Scope F.3.8 Validation Rules
+
+Create schemas:
+
+```txt
+src/features/crm/approval/schemas/approval-workflow.schema.ts
+src/features/crm/approval/schemas/approval-step.schema.ts
+```
+
+Workflow validation:
+
+* code required
+* code normalized lowercase / snake_case
+* name required
+* entityType required
+* code unique per organization
+* cannot update code if workflow is used
+
+Step validation:
+
+* roleCode required
+* roleName required
+* stepNumber positive integer
+* approvalMode required
+* isRequired boolean
+* cannot create duplicate stepNumber
+* cannot leave active workflow with no required step
+
+---
+
+## Scope F.3.9 Audit Logging
+
+Audit actions:
+
+```txt
+create_approval_workflow
+update_approval_workflow
+delete_approval_workflow
+clone_approval_workflow
+activate_approval_workflow
+deactivate_approval_workflow
+
+create_approval_step
+update_approval_step
+delete_approval_step
+reorder_approval_steps
+```
+
+Audit must capture:
+
+```txt
+workflowId
+stepId
+before
+after
+actor
+timestamp
+```
+
+---
+
+## Scope F.3.10 Permissions
+
+Add or verify permissions:
+
+```txt
+crm.approval.workflow.read
+crm.approval.workflow.create
+crm.approval.workflow.update
+crm.approval.workflow.delete
+crm.approval.workflow.clone
+crm.approval.workflow.activate
+crm.approval.workflow.deactivate
+crm.approval.workflow.step.manage
+```
+
+Rules:
+
+* Admin/settings-only feature
+* route handlers must not check role strings directly
+* use existing CRM authorization foundation
+* do not expose builder to normal sales users
+
+---
+
+## Scope F.3.11 Documentation
+
+Create:
+
+```txt
+docs/implementation/task-f3-approval-workflow-builder-foundation.md
+```
+
+Document:
+
+```txt
+workflow schema
+step schema
+lock strategy
+clone behavior
+API routes
+permission map
+known limitations
+```
+
+---
+
+## Explicit Non-Scope
+
+Do not implement:
+
+* Notification Center
+* Email sending
+* LINE sending
+* approval reminder
+* approval escalation
+* delegation
+* vacation substitute approval
+* manager hierarchy approver lookup
+* full workflow versioning
+* drag-and-drop builder
+* advanced parallel approval runtime
+* approval dashboard
+
+These belong to later F tasks.
+
+---
+
+## Verification
+
+Run:
+
+```txt
+npm exec tsc --noEmit
+npm run build
+```
+
+Manual verification:
+
+```txt
+Create workflow
+Edit unused workflow
+Add steps
+Edit steps
+Delete step and verify reorder
+Reorder steps
+Clone workflow
+Deactivate workflow
+Activate workflow
+Cannot edit used workflow if lock strategy is applied
+Cannot delete workflow used by active approval request
+Approval Matrix can resolve to newly created active workflow
+Submit quotation approval still works
+Approve/reject existing flow still works
+Audit logs are created
+```
+
+---
+
+## Definition of Done
+
+Task is complete when:
+
+* Approval Workflow Builder APIs exist
+* Approval Workflow settings UI exists
+* Admin can create/clone/activate/deactivate workflow
+* Admin can add/edit/delete/reorder steps
+* Used workflow edit safety is enforced
+* Approval Matrix can select active workflows
+* Existing quotation approval submit/approve/reject flow remains operational
+* Audit logs capture workflow and step maintenance
+
+Result:
+
+```txt
+Approval Workflow Builder Foundation = Established
+Approval Matrix Configuration = Maintainable
+Ready for F.4 Notification Framework
+```
diff --git a/src/app/api/crm/settings/approval-workflows/[id]/activate/route.ts b/src/app/api/crm/settings/approval-workflows/[id]/activate/route.ts
new file mode 100644
index 0000000..2e681fb
--- /dev/null
+++ b/src/app/api/crm/settings/approval-workflows/[id]/activate/route.ts
@@ -0,0 +1,46 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import {
+  activateApprovalWorkflow,
+  getApprovalWorkflow
+} from '@/features/crm/approval/server/workflow-builder.service';
+import { PERMISSIONS } from '@/lib/auth/rbac';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+type Params = {
+  params: Promise<{ id: string }>;
+};
+
+export async function POST(_request: NextRequest, { params }: Params) {
+  try {
+    const { id } = await params;
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmApprovalWorkflowActivate
+    });
+    const before = await getApprovalWorkflow(id, organization.id);
+    const updated = await activateApprovalWorkflow(id, organization.id, session.user.id);
+
+    await auditAction({
+      organizationId: organization.id,
+      userId: session.user.id,
+      entityType: 'crm_approval_workflow',
+      entityId: id,
+      action: 'activate_approval_workflow',
+      beforeData: before,
+      afterData: updated
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Approval workflow activated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+    return NextResponse.json({ message: 'Unable activate approval workflow' }, { status: 500 });
+  }
+}
diff --git a/src/app/api/crm/settings/approval-workflows/[id]/clone/route.ts b/src/app/api/crm/settings/approval-workflows/[id]/clone/route.ts
new file mode 100644
index 0000000..f6745fe
--- /dev/null
+++ b/src/app/api/crm/settings/approval-workflows/[id]/clone/route.ts
@@ -0,0 +1,43 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import { cloneApprovalWorkflow, getApprovalWorkflow } from '@/features/crm/approval/server/workflow-builder.service';
+import { PERMISSIONS } from '@/lib/auth/rbac';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+type Params = {
+  params: Promise<{ id: string }>;
+};
+
+export async function POST(_request: NextRequest, { params }: Params) {
+  try {
+    const { id } = await params;
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmApprovalWorkflowClone
+    });
+    const before = await getApprovalWorkflow(id, organization.id);
+    const cloned = await cloneApprovalWorkflow(id, organization.id, session.user.id);
+
+    await auditAction({
+      organizationId: organization.id,
+      userId: session.user.id,
+      entityType: 'crm_approval_workflow',
+      entityId: cloned.id,
+      action: 'clone_approval_workflow',
+      beforeData: before,
+      afterData: cloned
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Approval workflow cloned successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+    return NextResponse.json({ message: 'Unable clone approval workflow' }, { status: 500 });
+  }
+}
diff --git a/src/app/api/crm/settings/approval-workflows/[id]/deactivate/route.ts b/src/app/api/crm/settings/approval-workflows/[id]/deactivate/route.ts
new file mode 100644
index 0000000..4f0aa0f
--- /dev/null
+++ b/src/app/api/crm/settings/approval-workflows/[id]/deactivate/route.ts
@@ -0,0 +1,46 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import {
+  deactivateApprovalWorkflow,
+  getApprovalWorkflow
+} from '@/features/crm/approval/server/workflow-builder.service';
+import { PERMISSIONS } from '@/lib/auth/rbac';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+type Params = {
+  params: Promise<{ id: string }>;
+};
+
+export async function POST(_request: NextRequest, { params }: Params) {
+  try {
+    const { id } = await params;
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmApprovalWorkflowDeactivate
+    });
+    const before = await getApprovalWorkflow(id, organization.id);
+    const updated = await deactivateApprovalWorkflow(id, organization.id, session.user.id);
+
+    await auditAction({
+      organizationId: organization.id,
+      userId: session.user.id,
+      entityType: 'crm_approval_workflow',
+      entityId: id,
+      action: 'deactivate_approval_workflow',
+      beforeData: before,
+      afterData: updated
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Approval workflow deactivated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+    return NextResponse.json({ message: 'Unable deactivate approval workflow' }, { status: 500 });
+  }
+}
diff --git a/src/app/api/crm/settings/approval-workflows/[id]/route.ts b/src/app/api/crm/settings/approval-workflows/[id]/route.ts
index 1093103..7e730a8 100644
--- a/src/app/api/crm/settings/approval-workflows/[id]/route.ts
+++ b/src/app/api/crm/settings/approval-workflows/[id]/route.ts
@@ -1,11 +1,12 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { z } from 'zod';
-import { auditDelete, auditUpdate } from '@/features/foundation/audit-log/service';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import { updateApprovalWorkflowSchema } from '@/features/crm/approval/schemas/approval-workflow.schema';
 import {
   getApprovalWorkflow,
   softDeleteApprovalWorkflow,
   updateApprovalWorkflow
-} from '@/features/foundation/approval/server/service';
+} from '@/features/crm/approval/server/workflow-builder.service';
 import { PERMISSIONS } from '@/lib/auth/rbac';
 import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
 
@@ -13,13 +14,6 @@ type Params = {
   params: Promise<{ id: string }>;
 };
 
-const workflowSchema = z.object({
-  code: z.string().min(1).optional(),
-  name: z.string().min(1).optional(),
-  entityType: z.string().min(1).optional(),
-  isActive: z.boolean().optional()
-});
-
 export async function GET(_request: NextRequest, { params }: Params) {
   try {
     const { id } = await params;
@@ -41,7 +35,7 @@ export async function GET(_request: NextRequest, { params }: Params) {
     if (error instanceof Error) {
       return NextResponse.json({ message: error.message }, { status: 400 });
     }
-    return NextResponse.json({ message: 'Unable to load approval workflow' }, { status: 500 });
+    return NextResponse.json({ message: 'Unable load approval workflow' }, { status: 500 });
   }
 }
 
@@ -51,15 +45,16 @@ export async function PATCH(request: NextRequest, { params }: Params) {
     const { organization, session } = await requireOrganizationAccess({
       permission: PERMISSIONS.crmApprovalWorkflowUpdate
     });
-    const payload = workflowSchema.parse(await request.json());
+    const payload = updateApprovalWorkflowSchema.parse(await request.json());
     const before = await getApprovalWorkflow(id, organization.id);
-    const updated = await updateApprovalWorkflow(id, organization.id, payload);
+    const updated = await updateApprovalWorkflow(id, organization.id, session.user.id, payload);
 
-    await auditUpdate({
+    await auditAction({
       organizationId: organization.id,
       userId: session.user.id,
       entityType: 'crm_approval_workflow',
       entityId: id,
+      action: 'update_approval_workflow',
       beforeData: before,
       afterData: updated
     });
@@ -81,7 +76,7 @@ export async function PATCH(request: NextRequest, { params }: Params) {
     if (error instanceof Error) {
       return NextResponse.json({ message: error.message }, { status: 400 });
     }
-    return NextResponse.json({ message: 'Unable to update approval workflow' }, { status: 500 });
+    return NextResponse.json({ message: 'Unable update approval workflow' }, { status: 500 });
   }
 }
 
@@ -91,13 +86,14 @@ export async function DELETE(_request: NextRequest, { params }: Params) {
     const { organization, session } = await requireOrganizationAccess({
       permission: PERMISSIONS.crmApprovalWorkflowDelete
     });
-    const result = await softDeleteApprovalWorkflow(id, organization.id);
+    const result = await softDeleteApprovalWorkflow(id, organization.id, session.user.id);
 
-    await auditDelete({
+    await auditAction({
       organizationId: organization.id,
       userId: session.user.id,
       entityType: 'crm_approval_workflow',
       entityId: id,
+      action: 'delete_approval_workflow',
       beforeData: result.before,
       afterData: result.after
     });
@@ -113,6 +109,6 @@ export async function DELETE(_request: NextRequest, { params }: Params) {
     if (error instanceof Error) {
       return NextResponse.json({ message: error.message }, { status: 400 });
     }
-    return NextResponse.json({ message: 'Unable to delete approval workflow' }, { status: 500 });
+    return NextResponse.json({ message: 'Unable delete approval workflow' }, { status: 500 });
   }
 }
diff --git a/src/app/api/crm/settings/approval-workflows/[id]/steps/[stepId]/route.ts b/src/app/api/crm/settings/approval-workflows/[id]/steps/[stepId]/route.ts
new file mode 100644
index 0000000..50d11a3
--- /dev/null
+++ b/src/app/api/crm/settings/approval-workflows/[id]/steps/[stepId]/route.ts
@@ -0,0 +1,90 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { z } from 'zod';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import { updateApprovalStepSchema } from '@/features/crm/approval/schemas/approval-step.schema';
+import {
+  deleteApprovalWorkflowStep,
+  getApprovalWorkflow,
+  updateApprovalWorkflowStep
+} from '@/features/crm/approval/server/workflow-builder.service';
+import { PERMISSIONS } from '@/lib/auth/rbac';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+type Params = {
+  params: Promise<{ id: string; stepId: string }>;
+};
+
+export async function PATCH(request: NextRequest, { params }: Params) {
+  try {
+    const { id, stepId } = await params;
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmApprovalWorkflowStepManage
+    });
+    const payload = updateApprovalStepSchema.parse(await request.json());
+    const before = await getApprovalWorkflow(id, organization.id);
+    const updated = await updateApprovalWorkflowStep(stepId, organization.id, payload);
+
+    await auditAction({
+      organizationId: organization.id,
+      userId: session.user.id,
+      entityType: 'crm_approval_step',
+      entityId: stepId,
+      action: 'update_approval_step',
+      beforeData: before.steps,
+      afterData: updated
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Approval workflow step updated successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+    if (error instanceof z.ZodError) {
+      return NextResponse.json(
+        { message: error.issues[0]?.message ?? 'Invalid payload' },
+        { status: 400 }
+      );
+    }
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+    return NextResponse.json({ message: 'Unable update approval workflow step' }, { status: 500 });
+  }
+}
+
+export async function DELETE(_request: NextRequest, { params }: Params) {
+  try {
+    const { id, stepId } = await params;
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmApprovalWorkflowStepManage
+    });
+    const before = await getApprovalWorkflow(id, organization.id);
+    const result = await deleteApprovalWorkflowStep(stepId, organization.id);
+
+    await auditAction({
+      organizationId: organization.id,
+      userId: session.user.id,
+      entityType: 'crm_approval_step',
+      entityId: stepId,
+      action: 'delete_approval_step',
+      beforeData: before.steps,
+      afterData: result.steps
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Approval workflow step deleted successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+    return NextResponse.json({ message: 'Unable delete approval workflow step' }, { status: 500 });
+  }
+}
diff --git a/src/app/api/crm/settings/approval-workflows/[id]/steps/reorder/route.ts b/src/app/api/crm/settings/approval-workflows/[id]/steps/reorder/route.ts
new file mode 100644
index 0000000..a938b0a
--- /dev/null
+++ b/src/app/api/crm/settings/approval-workflows/[id]/steps/reorder/route.ts
@@ -0,0 +1,55 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { z } from 'zod';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import { reorderApprovalStepsSchema } from '@/features/crm/approval/schemas/approval-step.schema';
+import {
+  getApprovalWorkflow,
+  reorderApprovalWorkflowSteps
+} from '@/features/crm/approval/server/workflow-builder.service';
+import { PERMISSIONS } from '@/lib/auth/rbac';
+import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
+
+type Params = {
+  params: Promise<{ id: string }>;
+};
+
+export async function POST(request: NextRequest, { params }: Params) {
+  try {
+    const { id } = await params;
+    const { organization, session } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmApprovalWorkflowStepManage
+    });
+    const payload = reorderApprovalStepsSchema.parse(await request.json());
+    const before = await getApprovalWorkflow(id, organization.id);
+    const steps = await reorderApprovalWorkflowSteps(id, organization.id, payload);
+
+    await auditAction({
+      organizationId: organization.id,
+      userId: session.user.id,
+      entityType: 'crm_approval_step',
+      entityId: id,
+      action: 'reorder_approval_steps',
+      beforeData: before.steps,
+      afterData: steps
+    });
+
+    return NextResponse.json({
+      success: true,
+      message: 'Approval workflow steps reordered successfully'
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+    if (error instanceof z.ZodError) {
+      return NextResponse.json(
+        { message: error.issues[0]?.message ?? 'Invalid payload' },
+        { status: 400 }
+      );
+    }
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+    return NextResponse.json({ message: 'Unable reorder approval workflow steps' }, { status: 500 });
+  }
+}
diff --git a/src/app/api/crm/settings/approval-workflows/[id]/steps/route.ts b/src/app/api/crm/settings/approval-workflows/[id]/steps/route.ts
index 7ff88bf..115c651 100644
--- a/src/app/api/crm/settings/approval-workflows/[id]/steps/route.ts
+++ b/src/app/api/crm/settings/approval-workflows/[id]/steps/route.ts
@@ -1,50 +1,67 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { z } from 'zod';
-import { auditUpdate } from '@/features/foundation/audit-log/service';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import { createApprovalStepSchema } from '@/features/crm/approval/schemas/approval-step.schema';
 import {
+  createApprovalWorkflowStep,
   getApprovalWorkflow,
-  replaceApprovalWorkflowSteps
-} from '@/features/foundation/approval/server/service';
-import { BUSINESS_ROLES, PERMISSIONS } from '@/lib/auth/rbac';
+  listApprovalWorkflowSteps
+} from '@/features/crm/approval/server/workflow-builder.service';
+import { PERMISSIONS } from '@/lib/auth/rbac';
 import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
 
 type Params = {
   params: Promise<{ id: string }>;
 };
 
-const stepSchema = z.object({
-  stepNumber: z.number().int().min(1),
-  roleCode: z.enum(BUSINESS_ROLES),
-  roleName: z.string().min(1),
-  isRequired: z.boolean().optional()
-});
+export async function GET(_request: NextRequest, { params }: Params) {
+  try {
+    const { id } = await params;
+    const { organization } = await requireOrganizationAccess({
+      permission: PERMISSIONS.crmApprovalWorkflowRead
+    });
+    const items = await listApprovalWorkflowSteps(id, organization.id);
 
-const payloadSchema = z.object({
-  steps: z.array(stepSchema)
-});
+    return NextResponse.json({
+      success: true,
+      time: new Date().toISOString(),
+      message: 'Approval workflow steps loaded successfully',
+      items
+    });
+  } catch (error) {
+    if (error instanceof AuthError) {
+      return NextResponse.json({ message: error.message }, { status: error.status });
+    }
+    if (error instanceof Error) {
+      return NextResponse.json({ message: error.message }, { status: 400 });
+    }
+    return NextResponse.json({ message: 'Unable load approval workflow steps' }, { status: 500 });
+  }
+}
 
-export async function PUT(request: NextRequest, { params }: Params) {
+export async function POST(request: NextRequest, { params }: Params) {
   try {
     const { id } = await params;
     const { organization, session } = await requireOrganizationAccess({
-      permission: PERMISSIONS.crmApprovalWorkflowUpdate
+      permission: PERMISSIONS.crmApprovalWorkflowStepManage
     });
-    const payload = payloadSchema.parse(await request.json());
+    const payload = createApprovalStepSchema.parse(await request.json());
     const before = await getApprovalWorkflow(id, organization.id);
-    const steps = await replaceApprovalWorkflowSteps(id, organization.id, payload.steps);
+    const steps = await createApprovalWorkflowStep(id, organization.id, payload);
 
-    await auditUpdate({
+    await auditAction({
       organizationId: organization.id,
       userId: session.user.id,
       entityType: 'crm_approval_step',
       entityId: id,
+      action: 'create_approval_step',
       beforeData: before.steps,
       afterData: steps
     });
 
     return NextResponse.json({
       success: true,
-      message: 'Approval workflow steps updated successfully'
+      message: 'Approval workflow step created successfully'
     });
   } catch (error) {
     if (error instanceof AuthError) {
@@ -59,9 +76,6 @@ export async function PUT(request: NextRequest, { params }: Params) {
     if (error instanceof Error) {
       return NextResponse.json({ message: error.message }, { status: 400 });
     }
-    return NextResponse.json(
-      { message: 'Unable to update approval workflow steps' },
-      { status: 500 }
-    );
+    return NextResponse.json({ message: 'Unable create approval workflow step' }, { status: 500 });
   }
 }
diff --git a/src/app/api/crm/settings/approval-workflows/route.ts b/src/app/api/crm/settings/approval-workflows/route.ts
index 3702036..b5077c3 100644
--- a/src/app/api/crm/settings/approval-workflows/route.ts
+++ b/src/app/api/crm/settings/approval-workflows/route.ts
@@ -1,26 +1,24 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { z } from 'zod';
-import { auditCreate } from '@/features/foundation/audit-log/service';
+import { auditAction } from '@/features/foundation/audit-log/service';
+import { createApprovalWorkflowSchema, approvalWorkflowFilterSchema } from '@/features/crm/approval/schemas/approval-workflow.schema';
 import {
   createApprovalWorkflow,
   listApprovalWorkflows
-} from '@/features/foundation/approval/server/service';
-import { BUSINESS_ROLES, PERMISSIONS } from '@/lib/auth/rbac';
+} from '@/features/crm/approval/server/workflow-builder.service';
+import { PERMISSIONS } from '@/lib/auth/rbac';
 import { AuthError, requireOrganizationAccess } from '@/lib/auth/session';
 
-const workflowSchema = z.object({
-  code: z.string().min(1),
-  name: z.string().min(1),
-  entityType: z.string().min(1),
-  isActive: z.boolean().optional()
-});
-
-export async function GET(_request: NextRequest) {
+export async function GET(request: NextRequest) {
   try {
     const { organization } = await requireOrganizationAccess({
       permission: PERMISSIONS.crmApprovalWorkflowRead
     });
-    const items = await listApprovalWorkflows(organization.id);
+    const filters = approvalWorkflowFilterSchema.parse({
+      entityType: request.nextUrl.searchParams.get('entityType') ?? undefined,
+      activeOnly: request.nextUrl.searchParams.get('activeOnly') ?? undefined
+    });
+    const items = await listApprovalWorkflows(organization.id, filters);
 
     return NextResponse.json({
       success: true,
@@ -32,10 +30,16 @@ export async function GET(_request: NextRequest) {
     if (error instanceof AuthError) {
       return NextResponse.json({ message: error.message }, { status: error.status });
     }
+    if (error instanceof z.ZodError) {
+      return NextResponse.json(
+        { message: error.issues[0]?.message ?? 'Invalid filters' },
+        { status: 400 }
+      );
+    }
     if (error instanceof Error) {
       return NextResponse.json({ message: error.message }, { status: 400 });
     }
-    return NextResponse.json({ message: 'Unable to load approval workflows' }, { status: 500 });
+    return NextResponse.json({ message: 'Unable load approval workflows' }, { status: 500 });
   }
 }
 
@@ -44,21 +48,21 @@ export async function POST(request: NextRequest) {
     const { organization, session } = await requireOrganizationAccess({
       permission: PERMISSIONS.crmApprovalWorkflowCreate
     });
-    const payload = workflowSchema.parse(await request.json());
-    const created = await createApprovalWorkflow(organization.id, payload);
+    const payload = createApprovalWorkflowSchema.parse(await request.json());
+    const created = await createApprovalWorkflow(organization.id, session.user.id, payload);
 
-    await auditCreate({
+    await auditAction({
       organizationId: organization.id,
       userId: session.user.id,
       entityType: 'crm_approval_workflow',
       entityId: created.id,
+      action: 'create_approval_workflow',
       afterData: created
     });
 
     return NextResponse.json({
       success: true,
-      message: 'Approval workflow created successfully',
-      allowedRoles: BUSINESS_ROLES
+      message: 'Approval workflow created successfully'
     });
   } catch (error) {
     if (error instanceof AuthError) {
@@ -73,6 +77,6 @@ export async function POST(request: NextRequest) {
     if (error instanceof Error) {
       return NextResponse.json({ message: error.message }, { status: 400 });
     }
-    return NextResponse.json({ message: 'Unable to create approval workflow' }, { status: 500 });
+    return NextResponse.json({ message: 'Unable create approval workflow' }, { status: 500 });
   }
 }
diff --git a/src/app/not-found.tsx b/src/app/not-found.tsx
index 92cddb5..79795d3 100644
--- a/src/app/not-found.tsx
+++ b/src/app/not-found.tsx
@@ -1,24 +1,33 @@
-'use client';
+"use client";
 
-import { useRouter } from 'next/navigation';
+import { useRouter } from "next/navigation";
 
-import { Button } from '@/components/ui/button';
+import { Button } from "@/components/ui/button";
 
 export default function NotFound() {
   const router = useRouter();
 
   return (
-    <div className='absolute top-1/2 left-1/2 mb-16 -translate-x-1/2 -translate-y-1/2 items-center justify-center text-center'>
-      <span className='from-foreground bg-linear-to-b to-transparent bg-clip-text text-[10rem] leading-none font-extrabold text-transparent'>
+    <div className="absolute top-1/2 left-1/2 mb-16 -translate-x-1/2 -translate-y-1/2 items-center justify-center text-center">
+      <span className="from-foreground bg-linear-to-b to-transparent bg-clip-text text-[10rem] leading-none font-extrabold text-transparent">
         404
       </span>
-      <h2 className='font-heading my-2 text-2xl font-bold'>Something&apos;s missing</h2>
-      <p>Sorry, the page you are looking for doesn&apos;t exist or has been moved.</p>
-      <div className='mt-8 flex justify-center gap-2'>
-        <Button onClick={() => router.back()} variant='default' size='lg'>
+      <h2 className="font-heading my-2 text-2xl font-bold">
+        Something&apos;s missing
+      </h2>
+      <p>
+        Sorry, the page you are looking for doesn&apos;t exist or has been
+        moved.
+      </p>
+      <div className="mt-8 flex justify-center gap-2">
+        <Button onClick={() => router.back()} variant="default" size="lg">
           Go back
         </Button>
-        <Button onClick={() => router.push('/dashboard')} variant='ghost' size='lg'>
+        <Button
+          onClick={() => router.push("/dashboard/crm")}
+          variant="ghost"
+          size="lg"
+        >
           Back to Home
         </Button>
       </div>
diff --git a/src/db/schema.ts b/src/db/schema.ts
index e7a7ad9..87baa16 100644
--- a/src/db/schema.ts
+++ b/src/db/schema.ts
@@ -645,7 +645,11 @@ export const crmApprovalWorkflows = pgTable(
     code: text('code').notNull(),
     name: text('name').notNull(),
     entityType: text('entity_type').notNull(),
+    description: text('description'),
+    isSystem: boolean('is_system').default(false).notNull(),
     isActive: boolean('is_active').default(true).notNull(),
+    createdBy: text('created_by').notNull(),
+    updatedBy: text('updated_by').notNull(),
     createdAt: timestamp('created_at', { withTimezone: true }).defaultNow().notNull(),
     updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull(),
     deletedAt: timestamp('deleted_at', { withTimezone: true })
@@ -667,6 +671,7 @@ export const crmApprovalSteps = pgTable(
     stepNumber: integer('step_number').notNull(),
     roleCode: text('role_code').notNull(),
     roleName: text('role_name').notNull(),
+    approvalMode: text('approval_mode').default('sequential').notNull(),
     isRequired: boolean('is_required').default(true).notNull(),
     createdAt: timestamp('created_at', { withTimezone: true }).defaultNow().notNull(),
     updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull(),
diff --git a/src/db/seeds/foundation.seed.ts b/src/db/seeds/foundation.seed.ts
index 50d98c9..25d93c3 100644
--- a/src/db/seeds/foundation.seed.ts
+++ b/src/db/seeds/foundation.seed.ts
@@ -658,10 +658,27 @@ const APPROVAL_WORKFLOWS = [
     code: 'quotation_standard_approval',
     name: 'Quotation Standard Approval',
     entityType: 'quotation',
+    description: 'Default sequential quotation approval workflow',
+    isSystem: true,
     steps: [
-      { stepNumber: 1, roleCode: 'sales_manager', roleName: 'Sales Manager' },
-      { stepNumber: 2, roleCode: 'department_manager', roleName: 'Department Manager' },
-      { stepNumber: 3, roleCode: 'top_manager', roleName: 'Top Manager' }
+      {
+        stepNumber: 1,
+        roleCode: 'sales_manager',
+        roleName: 'Sales Manager',
+        approvalMode: 'sequential'
+      },
+      {
+        stepNumber: 2,
+        roleCode: 'department_manager',
+        roleName: 'Department Manager',
+        approvalMode: 'sequential'
+      },
+      {
+        stepNumber: 3,
+        roleCode: 'top_manager',
+        roleName: 'Top Manager',
+        approvalMode: 'sequential'
+      }
     ]
   }
 ];
diff --git a/src/features/crm/approval/schemas/approval-step.schema.ts b/src/features/crm/approval/schemas/approval-step.schema.ts
new file mode 100644
index 0000000..6a074e1
--- /dev/null
+++ b/src/features/crm/approval/schemas/approval-step.schema.ts
@@ -0,0 +1,29 @@
+import { z } from 'zod';
+import { BUSINESS_ROLES } from '@/lib/auth/rbac';
+
+export const APPROVAL_MODES = ['sequential', 'any_one', 'all_required'] as const;
+
+export const approvalStepSchema = z.object({
+  stepNumber: z.number().int().min(1),
+  roleCode: z.enum(BUSINESS_ROLES),
+  roleName: z.string().trim().min(1),
+  approvalMode: z.enum(APPROVAL_MODES).default('sequential'),
+  isRequired: z.boolean().default(true)
+});
+
+export const createApprovalStepSchema = approvalStepSchema;
+
+export const updateApprovalStepSchema = z.object({
+  roleCode: z.enum(BUSINESS_ROLES).optional(),
+  roleName: z.string().trim().min(1).optional(),
+  approvalMode: z.enum(APPROVAL_MODES).optional(),
+  isRequired: z.boolean().optional()
+});
+
+export const reorderApprovalStepsSchema = z.object({
+  orderedStepIds: z.array(z.string().min(1)).min(1)
+});
+
+export type CreateApprovalStepInput = z.infer<typeof createApprovalStepSchema>;
+export type UpdateApprovalStepInput = z.infer<typeof updateApprovalStepSchema>;
+export type ReorderApprovalStepsInput = z.infer<typeof reorderApprovalStepsSchema>;
diff --git a/src/features/crm/approval/schemas/approval-workflow.schema.ts b/src/features/crm/approval/schemas/approval-workflow.schema.ts
new file mode 100644
index 0000000..f7164e7
--- /dev/null
+++ b/src/features/crm/approval/schemas/approval-workflow.schema.ts
@@ -0,0 +1,58 @@
+import { z } from 'zod';
+
+function normalizeWorkflowCode(value: string) {
+  return value
+    .trim()
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, '_')
+    .replace(/^_+|_+$/g, '');
+}
+
+const nullableTrimmedString = z
+  .string()
+  .trim()
+  .optional()
+  .nullable()
+  .transform((value) => {
+    if (!value) {
+      return null;
+    }
+    return value;
+  });
+
+export const approvalWorkflowFilterSchema = z.object({
+  entityType: z.string().trim().optional(),
+  activeOnly: z
+    .union([z.literal('true'), z.literal('false')])
+    .optional()
+    .transform((value) => value === 'true')
+});
+
+export const createApprovalWorkflowSchema = z.object({
+  code: z
+    .string()
+    .min(1)
+    .transform((value) => normalizeWorkflowCode(value))
+    .refine((value) => value.length > 0, {
+      message: 'code is required'
+    }),
+  name: z.string().trim().min(1),
+  entityType: z.string().trim().min(1),
+  description: nullableTrimmedString,
+  isActive: z.boolean().optional()
+});
+
+export const updateApprovalWorkflowSchema = z.object({
+  code: z
+    .string()
+    .min(1)
+    .optional()
+    .transform((value) => (value ? normalizeWorkflowCode(value) : value)),
+  name: z.string().trim().min(1).optional(),
+  entityType: z.string().trim().min(1).optional(),
+  description: nullableTrimmedString.optional()
+});
+
+export type ApprovalWorkflowFiltersInput = z.infer<typeof approvalWorkflowFilterSchema>;
+export type CreateApprovalWorkflowInput = z.infer<typeof createApprovalWorkflowSchema>;
+export type UpdateApprovalWorkflowInput = z.infer<typeof updateApprovalWorkflowSchema>;
diff --git a/src/features/crm/approval/server/workflow-builder.service.ts b/src/features/crm/approval/server/workflow-builder.service.ts
new file mode 100644
index 0000000..6046d83
--- /dev/null
+++ b/src/features/crm/approval/server/workflow-builder.service.ts
@@ -0,0 +1,767 @@
+import { and, asc, count, desc, eq, inArray, isNull, sql } from 'drizzle-orm';
+import {
+  crmApprovalMatrices,
+  crmApprovalRequests,
+  crmApprovalSteps,
+  crmApprovalWorkflows
+} from '@/db/schema';
+import { db } from '@/lib/db';
+import { AuthError } from '@/lib/auth/session';
+import type {
+  CreateApprovalStepInput,
+  ReorderApprovalStepsInput,
+  UpdateApprovalStepInput
+} from '../schemas/approval-step.schema';
+import type {
+  ApprovalWorkflowFiltersInput,
+  CreateApprovalWorkflowInput,
+  UpdateApprovalWorkflowInput
+} from '../schemas/approval-workflow.schema';
+
+export interface ApprovalWorkflowUsage {
+  totalRequestCount: number;
+  activeRequestCount: number;
+  activeMatrixCount: number;
+  isLocked: boolean;
+  lockedReason: string | null;
+  canEdit: boolean;
+  canDelete: boolean;
+  canDeactivate: boolean;
+}
+
+export interface ApprovalWorkflowRecord {
+  id: string;
+  organizationId: string;
+  code: string;
+  name: string;
+  entityType: string;
+  description: string | null;
+  isSystem: boolean;
+  isActive: boolean;
+  createdBy: string;
+  updatedBy: string;
+  createdAt: string;
+  updatedAt: string;
+  deletedAt: string | null;
+}
+
+export interface ApprovalStepRecord {
+  id: string;
+  organizationId: string;
+  workflowId: string;
+  stepNumber: number;
+  roleCode: string;
+  roleName: string;
+  approvalMode: 'sequential' | 'any_one' | 'all_required';
+  isRequired: boolean;
+  createdAt: string;
+  updatedAt: string;
+  deletedAt: string | null;
+}
+
+export interface ApprovalWorkflowListItem extends ApprovalWorkflowRecord {
+  stepCount: number;
+  usage: ApprovalWorkflowUsage;
+}
+
+export interface ApprovalWorkflowDetail extends ApprovalWorkflowRecord {
+  steps: ApprovalStepRecord[];
+  usage: ApprovalWorkflowUsage;
+}
+
+export interface ApprovalWorkflowListFilters {
+  entityType?: string;
+  activeOnly?: boolean;
+}
+
+function mapWorkflowRecord(row: typeof crmApprovalWorkflows.$inferSelect): ApprovalWorkflowRecord {
+  return {
+    id: row.id,
+    organizationId: row.organizationId,
+    code: row.code,
+    name: row.name,
+    entityType: row.entityType,
+    description: row.description ?? null,
+    isSystem: row.isSystem,
+    isActive: row.isActive,
+    createdBy: row.createdBy,
+    updatedBy: row.updatedBy,
+    createdAt: row.createdAt.toISOString(),
+    updatedAt: row.updatedAt.toISOString(),
+    deletedAt: row.deletedAt?.toISOString() ?? null
+  };
+}
+
+function mapStepRecord(row: typeof crmApprovalSteps.$inferSelect): ApprovalStepRecord {
+  return {
+    id: row.id,
+    organizationId: row.organizationId,
+    workflowId: row.workflowId,
+    stepNumber: row.stepNumber,
+    roleCode: row.roleCode,
+    roleName: row.roleName,
+    approvalMode: row.approvalMode as ApprovalStepRecord['approvalMode'],
+    isRequired: row.isRequired,
+    createdAt: row.createdAt.toISOString(),
+    updatedAt: row.updatedAt.toISOString(),
+    deletedAt: row.deletedAt?.toISOString() ?? null
+  };
+}
+
+async function assertWorkflow(id: string, organizationId: string) {
+  const [workflow] = await db
+    .select()
+    .from(crmApprovalWorkflows)
+    .where(
+      and(
+        eq(crmApprovalWorkflows.id, id),
+        eq(crmApprovalWorkflows.organizationId, organizationId),
+        isNull(crmApprovalWorkflows.deletedAt)
+      )
+    )
+    .limit(1);
+
+  if (!workflow) {
+    throw new AuthError('Approval workflow not found', 404);
+  }
+
+  return workflow;
+}
+
+async function assertStep(stepId: string, organizationId: string) {
+  const [step] = await db
+    .select()
+    .from(crmApprovalSteps)
+    .where(
+      and(
+        eq(crmApprovalSteps.id, stepId),
+        eq(crmApprovalSteps.organizationId, organizationId),
+        isNull(crmApprovalSteps.deletedAt)
+      )
+    )
+    .limit(1);
+
+  if (!step) {
+    throw new AuthError('Approval step not found', 404);
+  }
+
+  return step;
+}
+
+async function listWorkflowStepsInternal(workflowId: string, organizationId: string) {
+  return db
+    .select()
+    .from(crmApprovalSteps)
+    .where(
+      and(
+        eq(crmApprovalSteps.workflowId, workflowId),
+        eq(crmApprovalSteps.organizationId, organizationId),
+        isNull(crmApprovalSteps.deletedAt)
+      )
+    )
+    .orderBy(asc(crmApprovalSteps.stepNumber), asc(crmApprovalSteps.createdAt));
+}
+
+async function ensureWorkflowCodeUnique(
+  organizationId: string,
+  code: string,
+  excludedWorkflowId?: string
+) {
+  const [existing] = await db
+    .select({ id: crmApprovalWorkflows.id })
+    .from(crmApprovalWorkflows)
+    .where(
+      and(
+        eq(crmApprovalWorkflows.organizationId, organizationId),
+        eq(crmApprovalWorkflows.code, code),
+        isNull(crmApprovalWorkflows.deletedAt),
+        ...(excludedWorkflowId ? [sql`${crmApprovalWorkflows.id} <> ${excludedWorkflowId}`] : [])
+      )
+    )
+    .limit(1);
+
+  if (existing) {
+    throw new AuthError('Approval workflow code already exists', 409);
+  }
+}
+
+async function getWorkflowUsageMap(workflowIds: string[], organizationId: string) {
+  if (workflowIds.length === 0) {
+    return new Map<string, ApprovalWorkflowUsage>();
+  }
+
+  const [allRequests, activeRequests, activeMatrices] = await Promise.all([
+    db
+      .select({
+        workflowId: crmApprovalRequests.workflowId,
+        count: count()
+      })
+      .from(crmApprovalRequests)
+      .where(
+        and(
+          eq(crmApprovalRequests.organizationId, organizationId),
+          inArray(crmApprovalRequests.workflowId, workflowIds),
+          isNull(crmApprovalRequests.deletedAt)
+        )
+      )
+      .groupBy(crmApprovalRequests.workflowId),
+    db
+      .select({
+        workflowId: crmApprovalRequests.workflowId,
+        count: count()
+      })
+      .from(crmApprovalRequests)
+      .where(
+        and(
+          eq(crmApprovalRequests.organizationId, organizationId),
+          inArray(crmApprovalRequests.workflowId, workflowIds),
+          eq(crmApprovalRequests.status, 'pending'),
+          isNull(crmApprovalRequests.deletedAt)
+        )
+      )
+      .groupBy(crmApprovalRequests.workflowId),
+    db
+      .select({
+        workflowId: crmApprovalMatrices.workflowId,
+        count: count()
+      })
+      .from(crmApprovalMatrices)
+      .where(
+        and(
+          eq(crmApprovalMatrices.organizationId, organizationId),
+          inArray(crmApprovalMatrices.workflowId, workflowIds),
+          eq(crmApprovalMatrices.isActive, true),
+          isNull(crmApprovalMatrices.deletedAt)
+        )
+      )
+      .groupBy(crmApprovalMatrices.workflowId)
+  ]);
+
+  const requestMap = new Map(allRequests.map((row) => [row.workflowId, Number(row.count)]));
+  const activeRequestMap = new Map(activeRequests.map((row) => [row.workflowId, Number(row.count)]));
+  const activeMatrixMap = new Map(activeMatrices.map((row) => [row.workflowId, Number(row.count)]));
+
+  return new Map(
+    workflowIds.map((workflowId) => {
+      const totalRequestCount = requestMap.get(workflowId) ?? 0;
+      const activeRequestCount = activeRequestMap.get(workflowId) ?? 0;
+      const activeMatrixCount = activeMatrixMap.get(workflowId) ?? 0;
+      const isLocked = totalRequestCount > 0;
+      const lockedReason = isLocked
+        ? 'This workflow has already been used by approval requests. Clone it before editing.'
+        : null;
+
+      return [
+        workflowId,
+        {
+          totalRequestCount,
+          activeRequestCount,
+          activeMatrixCount,
+          isLocked,
+          lockedReason,
+          canEdit: !isLocked,
+          canDelete: totalRequestCount === 0 && activeMatrixCount === 0,
+          canDeactivate: activeRequestCount === 0 && activeMatrixCount === 0
+        } satisfies ApprovalWorkflowUsage
+      ];
+    })
+  );
+}
+
+async function assertWorkflowEditable(workflowId: string, organizationId: string) {
+  const usage = (await getWorkflowUsageMap([workflowId], organizationId)).get(workflowId);
+  if (usage?.isLocked) {
+    throw new AuthError(usage.lockedReason ?? 'Workflow is locked', 400);
+  }
+  return usage;
+}
+
+async function assertWorkflowCanDeactivate(workflowId: string, organizationId: string) {
+  const usage = (await getWorkflowUsageMap([workflowId], organizationId)).get(workflowId);
+  if (!usage) {
+    throw new AuthError('Approval workflow not found', 404);
+  }
+  if (!usage.canDeactivate) {
+    throw new AuthError(
+      'Workflow cannot be deactivated while active matrices or pending approval requests still reference it',
+      400
+    );
+  }
+  return usage;
+}
+
+async function assertWorkflowCanDelete(workflowId: string, organizationId: string) {
+  const usage = (await getWorkflowUsageMap([workflowId], organizationId)).get(workflowId);
+  if (!usage) {
+    throw new AuthError('Approval workflow not found', 404);
+  }
+  if (!usage.canDelete) {
+    throw new AuthError(
+      'Workflow cannot be deleted because it is used by approval requests or active approval matrices',
+      400
+    );
+  }
+  return usage;
+}
+
+async function assertWorkflowHasRequiredSteps(workflowId: string, organizationId: string) {
+  const steps = await listWorkflowStepsInternal(workflowId, organizationId);
+  if (steps.length === 0) {
+    throw new AuthError('Active workflow must have at least one step', 400);
+  }
+  if (!steps.some((step) => step.isRequired)) {
+    throw new AuthError('Active workflow must have at least one required step', 400);
+  }
+}
+
+async function nextCloneCode(organizationId: string, baseCode: string) {
+  const normalizedBase = `${baseCode}_copy`;
+  const existingCodes = await db
+    .select({ code: crmApprovalWorkflows.code })
+    .from(crmApprovalWorkflows)
+    .where(
+      and(
+        eq(crmApprovalWorkflows.organizationId, organizationId),
+        isNull(crmApprovalWorkflows.deletedAt)
+      )
+    );
+
+  const existing = new Set(existingCodes.map((row) => row.code));
+  if (!existing.has(normalizedBase)) {
+    return normalizedBase;
+  }
+
+  let index = 2;
+  while (existing.has(`${normalizedBase}_${index}`)) {
+    index += 1;
+  }
+  return `${normalizedBase}_${index}`;
+}
+
+export async function listApprovalWorkflows(
+  organizationId: string,
+  filters: ApprovalWorkflowListFilters = {}
+): Promise<ApprovalWorkflowListItem[]> {
+  const rows = await db
+    .select()
+    .from(crmApprovalWorkflows)
+    .where(
+      and(
+        eq(crmApprovalWorkflows.organizationId, organizationId),
+        isNull(crmApprovalWorkflows.deletedAt),
+        ...(filters.entityType ? [eq(crmApprovalWorkflows.entityType, filters.entityType)] : []),
+        ...(filters.activeOnly ? [eq(crmApprovalWorkflows.isActive, true)] : [])
+      )
+    )
+    .orderBy(
+      asc(crmApprovalWorkflows.entityType),
+      desc(crmApprovalWorkflows.isActive),
+      asc(crmApprovalWorkflows.name)
+    );
+
+  const workflowIds = rows.map((row) => row.id);
+  const [steps, usageMap] = await Promise.all([
+    workflowIds.length
+      ? db
+          .select({
+            workflowId: crmApprovalSteps.workflowId
+          })
+          .from(crmApprovalSteps)
+          .where(
+            and(
+              eq(crmApprovalSteps.organizationId, organizationId),
+              inArray(crmApprovalSteps.workflowId, workflowIds),
+              isNull(crmApprovalSteps.deletedAt)
+            )
+          )
+      : Promise.resolve([]),
+    getWorkflowUsageMap(workflowIds, organizationId)
+  ]);
+
+  const stepCountMap = new Map<string, number>();
+  for (const step of steps) {
+    stepCountMap.set(step.workflowId, (stepCountMap.get(step.workflowId) ?? 0) + 1);
+  }
+
+  return rows.map((row) => ({
+    ...mapWorkflowRecord(row),
+    stepCount: stepCountMap.get(row.id) ?? 0,
+    usage: usageMap.get(row.id) ?? {
+      totalRequestCount: 0,
+      activeRequestCount: 0,
+      activeMatrixCount: 0,
+      isLocked: false,
+      lockedReason: null,
+      canEdit: true,
+      canDelete: true,
+      canDeactivate: true
+    }
+  }));
+}
+
+export async function getApprovalWorkflow(
+  id: string,
+  organizationId: string
+): Promise<ApprovalWorkflowDetail> {
+  const workflow = await assertWorkflow(id, organizationId);
+  const [steps, usageMap] = await Promise.all([
+    listWorkflowStepsInternal(id, organizationId),
+    getWorkflowUsageMap([id], organizationId)
+  ]);
+
+  return {
+    ...mapWorkflowRecord(workflow),
+    steps: steps.map(mapStepRecord),
+    usage: usageMap.get(id) ?? {
+      totalRequestCount: 0,
+      activeRequestCount: 0,
+      activeMatrixCount: 0,
+      isLocked: false,
+      lockedReason: null,
+      canEdit: true,
+      canDelete: true,
+      canDeactivate: true
+    }
+  };
+}
+
+export async function createApprovalWorkflow(
+  organizationId: string,
+  userId: string,
+  payload: CreateApprovalWorkflowInput
+): Promise<ApprovalWorkflowRecord> {
+  await ensureWorkflowCodeUnique(organizationId, payload.code);
+
+  const [created] = await db
+    .insert(crmApprovalWorkflows)
+    .values({
+      id: crypto.randomUUID(),
+      organizationId,
+      code: payload.code,
+      name: payload.name.trim(),
+      entityType: payload.entityType.trim(),
+      description: payload.description ?? null,
+      isSystem: false,
+      isActive: payload.isActive ?? true,
+      createdBy: userId,
+      updatedBy: userId
+    })
+    .returning();
+
+  return mapWorkflowRecord(created);
+}
+
+export async function updateApprovalWorkflow(
+  id: string,
+  organizationId: string,
+  userId: string,
+  payload: UpdateApprovalWorkflowInput
+): Promise<ApprovalWorkflowRecord> {
+  await assertWorkflowEditable(id, organizationId);
+  const current = await assertWorkflow(id, organizationId);
+  const nextCode = payload.code ?? current.code;
+
+  await ensureWorkflowCodeUnique(organizationId, nextCode, id);
+
+  const [updated] = await db
+    .update(crmApprovalWorkflows)
+    .set({
+      code: nextCode,
+      name: payload.name?.trim() ?? current.name,
+      entityType: payload.entityType?.trim() ?? current.entityType,
+      description: payload.description !== undefined ? payload.description : current.description,
+      updatedAt: new Date(),
+      updatedBy: userId
+    })
+    .where(eq(crmApprovalWorkflows.id, id))
+    .returning();
+
+  return mapWorkflowRecord(updated);
+}
+
+export async function cloneApprovalWorkflow(
+  id: string,
+  organizationId: string,
+  userId: string
+): Promise<ApprovalWorkflowDetail> {
+  const current = await assertWorkflow(id, organizationId);
+  const currentSteps = await listWorkflowStepsInternal(id, organizationId);
+  const cloneCode = await nextCloneCode(organizationId, current.code);
+
+  const clonedWorkflow = await db.transaction(async (tx) => {
+    const [workflow] = await tx
+      .insert(crmApprovalWorkflows)
+      .values({
+        id: crypto.randomUUID(),
+        organizationId,
+        code: cloneCode,
+        name: `${current.name} Copy`,
+        entityType: current.entityType,
+        description: current.description,
+        isSystem: false,
+        isActive: false,
+        createdBy: userId,
+        updatedBy: userId
+      })
+      .returning();
+
+    if (currentSteps.length > 0) {
+      await tx.insert(crmApprovalSteps).values(
+        currentSteps.map((step) => ({
+          id: crypto.randomUUID(),
+          organizationId,
+          workflowId: workflow.id,
+          stepNumber: step.stepNumber,
+          roleCode: step.roleCode,
+          roleName: step.roleName,
+          approvalMode: step.approvalMode,
+          isRequired: step.isRequired
+        }))
+      );
+    }
+
+    return workflow;
+  });
+
+  return getApprovalWorkflow(clonedWorkflow.id, organizationId);
+}
+
+export async function activateApprovalWorkflow(
+  id: string,
+  organizationId: string,
+  userId: string
+): Promise<ApprovalWorkflowRecord> {
+  await assertWorkflowHasRequiredSteps(id, organizationId);
+  const [updated] = await db
+    .update(crmApprovalWorkflows)
+    .set({
+      isActive: true,
+      updatedAt: new Date(),
+      updatedBy: userId
+    })
+    .where(eq(crmApprovalWorkflows.id, id))
+    .returning();
+
+  return mapWorkflowRecord(updated);
+}
+
+export async function deactivateApprovalWorkflow(
+  id: string,
+  organizationId: string,
+  userId: string
+): Promise<ApprovalWorkflowRecord> {
+  await assertWorkflowCanDeactivate(id, organizationId);
+  const [updated] = await db
+    .update(crmApprovalWorkflows)
+    .set({
+      isActive: false,
+      updatedAt: new Date(),
+      updatedBy: userId
+    })
+    .where(eq(crmApprovalWorkflows.id, id))
+    .returning();
+
+  return mapWorkflowRecord(updated);
+}
+
+export async function softDeleteApprovalWorkflow(
+  id: string,
+  organizationId: string,
+  userId: string
+): Promise<{ before: ApprovalWorkflowDetail; after: ApprovalWorkflowRecord }> {
+  const before = await getApprovalWorkflow(id, organizationId);
+  await assertWorkflowCanDelete(id, organizationId);
+  const [updated] = await db
+    .update(crmApprovalWorkflows)
+    .set({
+      deletedAt: new Date(),
+      updatedAt: new Date(),
+      updatedBy: userId
+    })
+    .where(eq(crmApprovalWorkflows.id, id))
+    .returning();
+
+  return {
+    before,
+    after: mapWorkflowRecord(updated)
+  };
+}
+
+export async function listApprovalWorkflowSteps(
+  workflowId: string,
+  organizationId: string
+): Promise<ApprovalStepRecord[]> {
+  await assertWorkflow(workflowId, organizationId);
+  const steps = await listWorkflowStepsInternal(workflowId, organizationId);
+  return steps.map(mapStepRecord);
+}
+
+export async function createApprovalWorkflowStep(
+  workflowId: string,
+  organizationId: string,
+  payload: CreateApprovalStepInput
+): Promise<ApprovalStepRecord[]> {
+  await assertWorkflowEditable(workflowId, organizationId);
+  const workflow = await assertWorkflow(workflowId, organizationId);
+
+  await db.transaction(async (tx) => {
+    const existingSteps = await tx
+      .select()
+      .from(crmApprovalSteps)
+      .where(
+        and(
+          eq(crmApprovalSteps.workflowId, workflowId),
+          eq(crmApprovalSteps.organizationId, organizationId),
+          isNull(crmApprovalSteps.deletedAt)
+        )
+      )
+      .orderBy(asc(crmApprovalSteps.stepNumber));
+
+    const maxStepNumber = existingSteps.length + 1;
+    if (payload.stepNumber > maxStepNumber) {
+      throw new AuthError(`stepNumber must be between 1 and ${maxStepNumber}`, 400);
+    }
+
+    await Promise.all(
+      existingSteps
+        .filter((step) => step.stepNumber >= payload.stepNumber)
+        .sort((left, right) => right.stepNumber - left.stepNumber)
+        .map((step) =>
+          tx
+            .update(crmApprovalSteps)
+            .set({
+              stepNumber: step.stepNumber + 1,
+              updatedAt: new Date()
+            })
+            .where(eq(crmApprovalSteps.id, step.id))
+        )
+    );
+
+    await tx.insert(crmApprovalSteps).values({
+      id: crypto.randomUUID(),
+      organizationId,
+      workflowId,
+      stepNumber: payload.stepNumber,
+      roleCode: payload.roleCode,
+      roleName: payload.roleName.trim(),
+      approvalMode: payload.approvalMode,
+      isRequired: payload.isRequired
+    });
+  });
+
+  if (workflow.isActive) {
+    await assertWorkflowHasRequiredSteps(workflowId, organizationId);
+  }
+
+  return listApprovalWorkflowSteps(workflowId, organizationId);
+}
+
+export async function updateApprovalWorkflowStep(
+  stepId: string,
+  organizationId: string,
+  payload: UpdateApprovalStepInput
+): Promise<ApprovalStepRecord> {
+  const current = await assertStep(stepId, organizationId);
+  await assertWorkflowEditable(current.workflowId, organizationId);
+
+  const [updated] = await db
+    .update(crmApprovalSteps)
+    .set({
+      roleCode: payload.roleCode ?? current.roleCode,
+      roleName: payload.roleName?.trim() ?? current.roleName,
+      approvalMode: payload.approvalMode ?? current.approvalMode,
+      isRequired: payload.isRequired ?? current.isRequired,
+      updatedAt: new Date()
+    })
+    .where(eq(crmApprovalSteps.id, stepId))
+    .returning();
+
+  const workflow = await assertWorkflow(current.workflowId, organizationId);
+  if (workflow.isActive) {
+    await assertWorkflowHasRequiredSteps(current.workflowId, organizationId);
+  }
+
+  return mapStepRecord(updated);
+}
+
+export async function deleteApprovalWorkflowStep(
+  stepId: string,
+  organizationId: string
+): Promise<{ before: ApprovalStepRecord; after: ApprovalStepRecord; steps: ApprovalStepRecord[] }> {
+  const current = await assertStep(stepId, organizationId);
+  await assertWorkflowEditable(current.workflowId, organizationId);
+  const workflow = await assertWorkflow(current.workflowId, organizationId);
+
+  const [updated] = await db
+    .update(crmApprovalSteps)
+    .set({
+      deletedAt: new Date(),
+      updatedAt: new Date()
+    })
+    .where(eq(crmApprovalSteps.id, stepId))
+    .returning();
+
+  const remainingSteps = await listWorkflowStepsInternal(current.workflowId, organizationId);
+  await Promise.all(
+    remainingSteps.map((step, index) =>
+      db
+        .update(crmApprovalSteps)
+        .set({
+          stepNumber: index + 1,
+          updatedAt: new Date()
+        })
+        .where(eq(crmApprovalSteps.id, step.id))
+    )
+  );
+
+  if (workflow.isActive) {
+    await assertWorkflowHasRequiredSteps(current.workflowId, organizationId);
+  }
+
+  return {
+    before: mapStepRecord(current),
+    after: mapStepRecord(updated),
+    steps: await listApprovalWorkflowSteps(current.workflowId, organizationId)
+  };
+}
+
+export async function reorderApprovalWorkflowSteps(
+  workflowId: string,
+  organizationId: string,
+  payload: ReorderApprovalStepsInput
+): Promise<ApprovalStepRecord[]> {
+  await assertWorkflowEditable(workflowId, organizationId);
+  const existingSteps = await listWorkflowStepsInternal(workflowId, organizationId);
+
+  if (existingSteps.length !== payload.orderedStepIds.length) {
+    throw new AuthError('orderedStepIds must include every active step exactly once', 400);
+  }
+
+  const existingIds = new Set(existingSteps.map((step) => step.id));
+  for (const stepId of payload.orderedStepIds) {
+    if (!existingIds.has(stepId)) {
+      throw new AuthError('orderedStepIds contains an unknown step', 400);
+    }
+  }
+
+  await db.transaction(async (tx) => {
+    await Promise.all(
+      payload.orderedStepIds.map((stepId, index) =>
+        tx
+          .update(crmApprovalSteps)
+          .set({
+            stepNumber: index + 1,
+            updatedAt: new Date()
+          })
+          .where(eq(crmApprovalSteps.id, stepId))
+      )
+    );
+  });
+
+  const workflow = await assertWorkflow(workflowId, organizationId);
+  if (workflow.isActive) {
+    await assertWorkflowHasRequiredSteps(workflowId, organizationId);
+  }
+
+  return listApprovalWorkflowSteps(workflowId, organizationId);
+}
diff --git a/src/features/foundation/approval/components/approval-workflow-settings.tsx b/src/features/foundation/approval/components/approval-workflow-settings.tsx
index 7330a61..3ac5036 100644
--- a/src/features/foundation/approval/components/approval-workflow-settings.tsx
+++ b/src/features/foundation/approval/components/approval-workflow-settings.tsx
@@ -3,6 +3,7 @@
 import * as React from 'react';
 import { useMutation, useSuspenseQuery } from '@tanstack/react-query';
 import { toast } from 'sonner';
+import { BUSINESS_ROLES } from '@/lib/auth/rbac';
 import { Icons } from '@/components/icons';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
@@ -16,54 +17,75 @@ import {
 } from '@/components/ui/dialog';
 import { Input } from '@/components/ui/input';
 import { Switch } from '@/components/ui/switch';
+import { Textarea } from '@/components/ui/textarea';
 import {
+  activateApprovalWorkflowMutation,
+  cloneApprovalWorkflowMutation,
   createApprovalWorkflowMutation,
+  createApprovalWorkflowStepMutation,
+  deactivateApprovalWorkflowMutation,
   deleteApprovalWorkflowMutation,
-  replaceApprovalWorkflowStepsMutation,
-  updateApprovalWorkflowMutation
+  deleteApprovalWorkflowStepMutation,
+  reorderApprovalWorkflowStepsMutation,
+  updateApprovalWorkflowMutation,
+  updateApprovalWorkflowStepMutation
 } from '../mutations';
-import {
-  approvalWorkflowByIdOptions,
-  approvalWorkflowsQueryOptions
-} from '../queries';
+import { approvalWorkflowByIdOptions, approvalWorkflowsQueryOptions } from '../queries';
 import type {
   ApprovalStepMutationPayload,
+  ApprovalStepRecord,
+  ApprovalStepUpdatePayload,
   ApprovalWorkflowDetail,
   ApprovalWorkflowMutationPayload
 } from '../types';
 
-type WorkflowState = {
+const APPROVAL_MODES = [
+  { value: 'sequential', label: 'Sequential', description: 'Runs step-by-step in current runtime.' },
+  { value: 'any_one', label: 'Any One', description: 'Stored for future runtime support.' },
+  { value: 'all_required', label: 'All Required', description: 'Stored for future runtime support.' }
+] as const;
+
+type WorkflowFormState = {
   code: string;
   name: string;
   entityType: string;
+  description: string;
   isActive: boolean;
 };
 
-type StepState = {
+type StepFormState = {
   stepNumber: string;
   roleCode: string;
   roleName: string;
+  approvalMode: ApprovalStepMutationPayload['approvalMode'];
   isRequired: boolean;
 };
 
-function toWorkflowState(workflow?: ApprovalWorkflowDetail): WorkflowState {
+function toWorkflowState(workflow?: ApprovalWorkflowDetail): WorkflowFormState {
   return {
     code: workflow?.code ?? '',
     name: workflow?.name ?? '',
     entityType: workflow?.entityType ?? 'quotation',
+    description: workflow?.description ?? '',
     isActive: workflow?.isActive ?? true
   };
 }
 
-function toStepState(workflow?: ApprovalWorkflowDetail): StepState[] {
-  return (
-    workflow?.steps.map((step) => ({
-      stepNumber: String(step.stepNumber),
-      roleCode: step.roleCode,
-      roleName: step.roleName,
-      isRequired: step.isRequired
-    })) ?? [{ stepNumber: '1', roleCode: 'sales_manager', roleName: 'Sales Manager', isRequired: true }]
-  );
+function toStepState(step?: ApprovalStepRecord, stepNumber = 1): StepFormState {
+  return {
+    stepNumber: String(step?.stepNumber ?? stepNumber),
+    roleCode: step?.roleCode ?? 'sales_manager',
+    roleName: step?.roleName ?? 'Sales Manager',
+    approvalMode: step?.approvalMode ?? 'sequential',
+    isRequired: step?.isRequired ?? true
+  };
+}
+
+function friendlyRoleName(roleCode: string) {
+  return roleCode
+    .split('_')
+    .map((part) => part.charAt(0).toUpperCase() + part.slice(1))
+    .join(' ');
 }
 
 function WorkflowDialog({
@@ -75,7 +97,7 @@ function WorkflowDialog({
   onOpenChange: (open: boolean) => void;
   workflow?: ApprovalWorkflowDetail;
 }) {
-  const [state, setState] = React.useState<WorkflowState>(toWorkflowState(workflow));
+  const [state, setState] = React.useState<WorkflowFormState>(toWorkflowState(workflow));
   const createMutation = useMutation({
     ...createApprovalWorkflowMutation,
     onSuccess: () => {
@@ -99,12 +121,16 @@ function WorkflowDialog({
     }
   }, [open, workflow]);
 
+  const isPending = createMutation.isPending || updateMutation.isPending;
+
   async function onSubmit(event: React.FormEvent) {
     event.preventDefault();
+
     const payload: ApprovalWorkflowMutationPayload = {
       code: state.code,
       name: state.name,
       entityType: state.entityType,
+      description: state.description.trim() || null,
       isActive: state.isActive
     };
 
@@ -116,26 +142,73 @@ function WorkflowDialog({
     await createMutation.mutateAsync(payload);
   }
 
-  const isPending = createMutation.isPending || updateMutation.isPending;
-
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent>
+      <DialogContent className='sm:max-w-2xl'>
         <DialogHeader>
           <DialogTitle>{workflow ? 'Edit Workflow' : 'Create Workflow'}</DialogTitle>
-          <DialogDescription>Sequential workflow only. No parallel or conditional logic is introduced here.</DialogDescription>
+          <DialogDescription>
+            Configure workflow metadata. Runtime still executes steps sequentially for now.
+          </DialogDescription>
         </DialogHeader>
-        <form onSubmit={onSubmit} className='grid gap-4'>
-          <Input placeholder='Workflow code' value={state.code} onChange={(e) => setState((current) => ({ ...current, code: e.target.value }))} />
-          <Input placeholder='Workflow name' value={state.name} onChange={(e) => setState((current) => ({ ...current, name: e.target.value }))} />
-          <Input placeholder='Entity type' value={state.entityType} onChange={(e) => setState((current) => ({ ...current, entityType: e.target.value }))} />
-          <div className='flex items-center justify-between rounded-lg border px-4 py-3'>
-            <div>
-              <div className='font-medium'>Active</div>
-              <div className='text-muted-foreground text-sm'>Inactive workflows stay available in audit history only.</div>
+
+        <form onSubmit={onSubmit} className='space-y-4'>
+          <div className='grid gap-4 md:grid-cols-2'>
+            <div className='space-y-2'>
+              <div className='text-sm font-medium'>Code</div>
+              <Input
+                placeholder='quotation_standard_approval'
+                value={state.code}
+                onChange={(event) => setState((current) => ({ ...current, code: event.target.value }))}
+              />
+            </div>
+            <div className='space-y-2'>
+              <div className='text-sm font-medium'>Entity Type</div>
+              <Input
+                placeholder='quotation'
+                value={state.entityType}
+                onChange={(event) =>
+                  setState((current) => ({ ...current, entityType: event.target.value }))
+                }
+              />
             </div>
-            <Switch checked={state.isActive} onCheckedChange={(checked) => setState((current) => ({ ...current, isActive: checked }))} />
           </div>
+
+          <div className='space-y-2'>
+            <div className='text-sm font-medium'>Name</div>
+            <Input
+              placeholder='Quotation Standard Approval'
+              value={state.name}
+              onChange={(event) => setState((current) => ({ ...current, name: event.target.value }))}
+            />
+          </div>
+
+          <div className='space-y-2'>
+            <div className='text-sm font-medium'>Description</div>
+            <Textarea
+              placeholder='Describe when this workflow should be used'
+              value={state.description}
+              onChange={(event) =>
+                setState((current) => ({ ...current, description: event.target.value }))
+              }
+            />
+          </div>
+
+          {!workflow ? (
+            <div className='flex items-center justify-between rounded-lg border px-4 py-3'>
+              <div>
+                <div className='font-medium'>Active on creation</div>
+                <div className='text-muted-foreground text-sm'>
+                  Keep this off if you want to finish step configuration first.
+                </div>
+              </div>
+              <Switch
+                checked={state.isActive}
+                onCheckedChange={(checked) => setState((current) => ({ ...current, isActive: checked }))}
+              />
+            </div>
+          ) : null}
+
           <DialogFooter>
             <Button type='button' variant='outline' onClick={() => onOpenChange(false)}>
               Cancel
@@ -150,20 +223,30 @@ function WorkflowDialog({
   );
 }
 
-function StepsDialog({
-  workflow,
+function StepDialog({
   open,
-  onOpenChange
+  onOpenChange,
+  workflow,
+  step
 }: {
-  workflow: ApprovalWorkflowDetail;
   open: boolean;
   onOpenChange: (open: boolean) => void;
+  workflow: ApprovalWorkflowDetail;
+  step?: ApprovalStepRecord;
 }) {
-  const [steps, setSteps] = React.useState<StepState[]>(toStepState(workflow));
-  const replaceMutation = useMutation({
-    ...replaceApprovalWorkflowStepsMutation,
+  const [state, setState] = React.useState<StepFormState>(toStepState(step, workflow.steps.length + 1));
+  const createMutation = useMutation({
+    ...createApprovalWorkflowStepMutation,
     onSuccess: () => {
-      toast.success('Workflow steps updated');
+      toast.success('Step created');
+      onOpenChange(false);
+    },
+    onError: (error) => toast.error(error instanceof Error ? error.message : 'Create failed')
+  });
+  const updateMutation = useMutation({
+    ...updateApprovalWorkflowStepMutation,
+    onSuccess: () => {
+      toast.success('Step updated');
       onOpenChange(false);
     },
     onError: (error) => toast.error(error instanceof Error ? error.message : 'Update failed')
@@ -171,73 +254,142 @@ function StepsDialog({
 
   React.useEffect(() => {
     if (open) {
-      setSteps(toStepState(workflow));
+      setState(toStepState(step, workflow.steps.length + 1));
     }
-  }, [open, workflow]);
+  }, [open, step, workflow.steps.length]);
 
-  function updateStep(index: number, field: keyof StepState, value: string | boolean) {
-    setSteps((current) =>
-      current.map((step, stepIndex) =>
-        stepIndex === index ? { ...step, [field]: value } : step
-      )
-    );
-  }
+  const isPending = createMutation.isPending || updateMutation.isPending;
 
   async function onSubmit(event: React.FormEvent) {
     event.preventDefault();
-    const payload: ApprovalStepMutationPayload[] = steps.map((step, index) => ({
-      stepNumber: Number(step.stepNumber || index + 1),
-      roleCode: step.roleCode,
-      roleName: step.roleName,
-      isRequired: step.isRequired
-    }));
 
-    await replaceMutation.mutateAsync({ workflowId: workflow.id, steps: payload });
+    if (step) {
+      const payload: ApprovalStepUpdatePayload = {
+        roleCode: state.roleCode,
+        roleName: state.roleName,
+        approvalMode: state.approvalMode,
+        isRequired: state.isRequired
+      };
+      await updateMutation.mutateAsync({
+        workflowId: workflow.id,
+        stepId: step.id,
+        values: payload
+      });
+      return;
+    }
+
+    const payload: ApprovalStepMutationPayload = {
+      stepNumber: Number(state.stepNumber),
+      roleCode: state.roleCode,
+      roleName: state.roleName,
+      approvalMode: state.approvalMode,
+      isRequired: state.isRequired
+    };
+    await createMutation.mutateAsync({
+      workflowId: workflow.id,
+      values: payload
+    });
   }
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className='sm:max-w-4xl'>
+      <DialogContent className='sm:max-w-2xl'>
         <DialogHeader>
-          <DialogTitle>Manage Steps</DialogTitle>
-          <DialogDescription>Each step resolves to a CRM business role and runs strictly in order.</DialogDescription>
+          <DialogTitle>{step ? 'Edit Step' : 'Add Step'}</DialogTitle>
+          <DialogDescription>
+            Non-sequential approval modes are stored now for future runtime support.
+          </DialogDescription>
         </DialogHeader>
+
         <form onSubmit={onSubmit} className='space-y-4'>
-          {steps.map((step, index) => (
-            <div key={`${index}-${step.roleCode}`} className='grid gap-3 rounded-lg border p-4 md:grid-cols-4'>
-              <Input placeholder='Step no.' value={step.stepNumber} onChange={(e) => updateStep(index, 'stepNumber', e.target.value)} />
-              <Input placeholder='Role code' value={step.roleCode} onChange={(e) => updateStep(index, 'roleCode', e.target.value)} />
-              <Input placeholder='Role name' value={step.roleName} onChange={(e) => updateStep(index, 'roleName', e.target.value)} />
-              <div className='flex items-center justify-between rounded-lg border px-3 py-2'>
-                <span className='text-sm font-medium'>Required</span>
-                <Switch checked={step.isRequired} onCheckedChange={(checked) => updateStep(index, 'isRequired', checked)} />
+          {!step ? (
+            <div className='space-y-2'>
+              <div className='text-sm font-medium'>Step Number</div>
+              <Input
+                type='number'
+                min={1}
+                value={state.stepNumber}
+                onChange={(event) =>
+                  setState((current) => ({ ...current, stepNumber: event.target.value }))
+                }
+              />
+            </div>
+          ) : null}
+
+          <div className='grid gap-4 md:grid-cols-2'>
+            <div className='space-y-2'>
+              <div className='text-sm font-medium'>Role Code</div>
+              <select
+                className='border-input bg-background flex h-10 w-full rounded-md border px-3 py-2 text-sm'
+                value={state.roleCode}
+                onChange={(event) =>
+                  setState((current) => ({
+                    ...current,
+                    roleCode: event.target.value,
+                    roleName: friendlyRoleName(event.target.value)
+                  }))
+                }
+              >
+                {BUSINESS_ROLES.map((role) => (
+                  <option key={role} value={role}>
+                    {role}
+                  </option>
+                ))}
+              </select>
+            </div>
+            <div className='space-y-2'>
+              <div className='text-sm font-medium'>Role Name</div>
+              <Input
+                value={state.roleName}
+                onChange={(event) =>
+                  setState((current) => ({ ...current, roleName: event.target.value }))
+                }
+              />
+            </div>
+          </div>
+
+          <div className='space-y-2'>
+            <div className='text-sm font-medium'>Approval Mode</div>
+            <select
+              className='border-input bg-background flex h-10 w-full rounded-md border px-3 py-2 text-sm'
+              value={state.approvalMode}
+              onChange={(event) =>
+                setState((current) => ({
+                  ...current,
+                  approvalMode: event.target.value as StepFormState['approvalMode']
+                }))
+              }
+            >
+              {APPROVAL_MODES.map((mode) => (
+                <option key={mode.value} value={mode.value}>
+                  {mode.label}
+                </option>
+              ))}
+            </select>
+            <div className='text-muted-foreground text-xs'>
+              {APPROVAL_MODES.find((mode) => mode.value === state.approvalMode)?.description}
+            </div>
+          </div>
+
+          <div className='flex items-center justify-between rounded-lg border px-4 py-3'>
+            <div>
+              <div className='font-medium'>Required Step</div>
+              <div className='text-muted-foreground text-sm'>
+                Active workflows must keep at least one required step.
               </div>
             </div>
-          ))}
-          <Button
-            type='button'
-            variant='outline'
-            onClick={() =>
-              setSteps((current) => [
-                ...current,
-                {
-                  stepNumber: String(current.length + 1),
-                  roleCode: '',
-                  roleName: '',
-                  isRequired: true
-                }
-              ])
-            }
-          >
-            <Icons.add className='mr-2 h-4 w-4' />
-            Add Step
-          </Button>
+            <Switch
+              checked={state.isRequired}
+              onCheckedChange={(checked) => setState((current) => ({ ...current, isRequired: checked }))}
+            />
+          </div>
+
           <DialogFooter>
             <Button type='button' variant='outline' onClick={() => onOpenChange(false)}>
               Cancel
             </Button>
-            <Button type='submit' isLoading={replaceMutation.isPending}>
-              Save Steps
+            <Button type='submit' isLoading={isPending}>
+              {step ? 'Save Step' : 'Add Step'}
             </Button>
           </DialogFooter>
         </form>
@@ -246,47 +398,241 @@ function StepsDialog({
   );
 }
 
-function WorkflowDetailActions({ workflowId }: { workflowId: string }) {
+function WorkflowCard({ workflowId }: { workflowId: string }) {
   const { data } = useSuspenseQuery(approvalWorkflowByIdOptions(workflowId));
   const workflow = data.workflow;
   const [workflowDialogOpen, setWorkflowDialogOpen] = React.useState(false);
-  const [stepsDialogOpen, setStepsDialogOpen] = React.useState(false);
+  const [createStepOpen, setCreateStepOpen] = React.useState(false);
+  const [editingStep, setEditingStep] = React.useState<ApprovalStepRecord | null>(null);
+
   const deleteMutation = useMutation({
     ...deleteApprovalWorkflowMutation,
     onSuccess: () => toast.success('Workflow deleted'),
     onError: (error) => toast.error(error instanceof Error ? error.message : 'Delete failed')
   });
+  const cloneMutation = useMutation({
+    ...cloneApprovalWorkflowMutation,
+    onSuccess: () => toast.success('Workflow cloned'),
+    onError: (error) => toast.error(error instanceof Error ? error.message : 'Clone failed')
+  });
+  const activateMutation = useMutation({
+    ...activateApprovalWorkflowMutation,
+    onSuccess: () => toast.success('Workflow activated'),
+    onError: (error) => toast.error(error instanceof Error ? error.message : 'Activate failed')
+  });
+  const deactivateMutation = useMutation({
+    ...deactivateApprovalWorkflowMutation,
+    onSuccess: () => toast.success('Workflow deactivated'),
+    onError: (error) => toast.error(error instanceof Error ? error.message : 'Deactivate failed')
+  });
+  const deleteStepMutation = useMutation({
+    ...deleteApprovalWorkflowStepMutation,
+    onSuccess: () => toast.success('Step deleted'),
+    onError: (error) => toast.error(error instanceof Error ? error.message : 'Delete step failed')
+  });
+  const reorderMutation = useMutation({
+    ...reorderApprovalWorkflowStepsMutation,
+    onSuccess: () => toast.success('Step order updated'),
+    onError: (error) => toast.error(error instanceof Error ? error.message : 'Reorder failed')
+  });
+
+  async function moveStep(stepId: string, direction: 'up' | 'down') {
+    const index = workflow.steps.findIndex((step) => step.id === stepId);
+    if (index < 0) return;
+    const nextIndex = direction === 'up' ? index - 1 : index + 1;
+    if (nextIndex < 0 || nextIndex >= workflow.steps.length) return;
+
+    const reordered = [...workflow.steps];
+    const [item] = reordered.splice(index, 1);
+    reordered.splice(nextIndex, 0, item);
+
+    await reorderMutation.mutateAsync({
+      workflowId: workflow.id,
+      values: {
+        orderedStepIds: reordered.map((step) => step.id)
+      }
+    });
+  }
 
   return (
-    <>
-      <div className='flex gap-2'>
-        <Button variant='outline' onClick={() => setWorkflowDialogOpen(true)}>
+    <div className='rounded-xl border p-5'>
+      <div className='flex flex-wrap items-start justify-between gap-4'>
+        <div className='space-y-2'>
+          <div className='text-xl font-semibold'>{workflow.name}</div>
+          <div className='text-muted-foreground text-sm'>
+            {workflow.code} | {workflow.entityType}
+          </div>
+          {workflow.description ? (
+            <div className='text-muted-foreground text-sm'>{workflow.description}</div>
+          ) : null}
+        </div>
+
+        <div className='flex flex-wrap gap-2'>
+          <Badge variant={workflow.isActive ? 'secondary' : 'outline'}>
+            {workflow.isActive ? 'Active' : 'Inactive'}
+          </Badge>
+          <Badge variant='outline'>{workflow.steps.length} steps</Badge>
+          {workflow.isSystem ? <Badge variant='outline'>System</Badge> : null}
+          {workflow.usage.isLocked ? <Badge variant='destructive'>Locked</Badge> : null}
+        </div>
+      </div>
+
+      <div className='mt-4 grid gap-3 md:grid-cols-3 xl:grid-cols-6'>
+        <div className='rounded-lg border p-3'>
+          <div className='text-muted-foreground text-xs'>Total Requests</div>
+          <div className='text-lg font-semibold'>{workflow.usage.totalRequestCount}</div>
+        </div>
+        <div className='rounded-lg border p-3'>
+          <div className='text-muted-foreground text-xs'>Pending Requests</div>
+          <div className='text-lg font-semibold'>{workflow.usage.activeRequestCount}</div>
+        </div>
+        <div className='rounded-lg border p-3'>
+          <div className='text-muted-foreground text-xs'>Active Matrices</div>
+          <div className='text-lg font-semibold'>{workflow.usage.activeMatrixCount}</div>
+        </div>
+        <div className='rounded-lg border p-3 md:col-span-3 xl:col-span-3'>
+          <div className='text-muted-foreground text-xs'>Safety</div>
+          <div className='mt-1 text-sm'>
+            {workflow.usage.lockedReason ?? 'This workflow is editable.'}
+          </div>
+        </div>
+      </div>
+
+      <div className='mt-4 flex flex-wrap gap-2'>
+        <Button
+          variant='outline'
+          onClick={() => setWorkflowDialogOpen(true)}
+          disabled={!workflow.usage.canEdit}
+        >
           Edit Workflow
         </Button>
-        <Button variant='outline' onClick={() => setStepsDialogOpen(true)}>
-          Manage Steps
+        <Button variant='outline' onClick={() => cloneMutation.mutate(workflow.id)} isLoading={cloneMutation.isPending}>
+          Clone
         </Button>
-        <Button variant='outline' onClick={() => deleteMutation.mutate(workflow.id)} isLoading={deleteMutation.isPending}>
+        {workflow.isActive ? (
+          <Button
+            variant='outline'
+            onClick={() => deactivateMutation.mutate(workflow.id)}
+            isLoading={deactivateMutation.isPending}
+            disabled={!workflow.usage.canDeactivate}
+          >
+            Deactivate
+          </Button>
+        ) : (
+          <Button
+            variant='outline'
+            onClick={() => activateMutation.mutate(workflow.id)}
+            isLoading={activateMutation.isPending}
+          >
+            Activate
+          </Button>
+        )}
+        <Button
+          variant='outline'
+          onClick={() => deleteMutation.mutate(workflow.id)}
+          isLoading={deleteMutation.isPending}
+          disabled={!workflow.usage.canDelete}
+        >
           Delete
         </Button>
+        <Button
+          onClick={() => setCreateStepOpen(true)}
+          disabled={!workflow.usage.canEdit}
+        >
+          <Icons.add className='mr-2 h-4 w-4' />
+          Add Step
+        </Button>
       </div>
-      <div className='mt-3 grid gap-3 md:grid-cols-2 xl:grid-cols-4'>
-        {workflow.steps.map((step) => (
+
+      <div className='mt-4 grid gap-3 md:grid-cols-2 xl:grid-cols-4'>
+        {workflow.steps.map((step, index) => (
           <div key={step.id} className='rounded-lg border p-4'>
-            <div className='font-medium'>Step {step.stepNumber}</div>
-            <div className='text-muted-foreground mt-1 text-sm'>{step.roleName}</div>
-            <div className='mt-2 flex gap-2'>
-              <Badge variant='outline'>{step.roleCode}</Badge>
+            <div className='flex items-start justify-between gap-2'>
+              <div>
+                <div className='font-medium'>Step {step.stepNumber}</div>
+                <div className='text-muted-foreground mt-1 text-sm'>{step.roleName}</div>
+              </div>
               <Badge variant={step.isRequired ? 'secondary' : 'outline'}>
                 {step.isRequired ? 'Required' : 'Optional'}
               </Badge>
             </div>
+
+            <div className='mt-3 flex flex-wrap gap-2'>
+              <Badge variant='outline'>{step.roleCode}</Badge>
+              <Badge variant='outline'>{step.approvalMode}</Badge>
+            </div>
+
+            {step.approvalMode !== 'sequential' ? (
+              <div className='text-muted-foreground mt-3 text-xs'>
+                Stored for future runtime support. Current engine still runs sequentially.
+              </div>
+            ) : null}
+
+            <div className='mt-4 flex flex-wrap gap-2'>
+              <Button
+                size='sm'
+                variant='outline'
+                onClick={() => moveStep(step.id, 'up')}
+                disabled={!workflow.usage.canEdit || index === 0 || reorderMutation.isPending}
+              >
+                Up
+              </Button>
+              <Button
+                size='sm'
+                variant='outline'
+                onClick={() => moveStep(step.id, 'down')}
+                disabled={
+                  !workflow.usage.canEdit ||
+                  index === workflow.steps.length - 1 ||
+                  reorderMutation.isPending
+                }
+              >
+                Down
+              </Button>
+              <Button
+                size='sm'
+                variant='outline'
+                onClick={() => setEditingStep(step)}
+                disabled={!workflow.usage.canEdit}
+              >
+                Edit
+              </Button>
+              <Button
+                size='sm'
+                variant='outline'
+                onClick={() =>
+                  deleteStepMutation.mutate({
+                    workflowId: workflow.id,
+                    stepId: step.id
+                  })
+                }
+                isLoading={deleteStepMutation.isPending}
+                disabled={!workflow.usage.canEdit}
+              >
+                Delete
+              </Button>
+            </div>
           </div>
         ))}
       </div>
-      <WorkflowDialog open={workflowDialogOpen} onOpenChange={setWorkflowDialogOpen} workflow={workflow} />
-      <StepsDialog open={stepsDialogOpen} onOpenChange={setStepsDialogOpen} workflow={workflow} />
-    </>
+
+      <WorkflowDialog
+        open={workflowDialogOpen}
+        onOpenChange={setWorkflowDialogOpen}
+        workflow={workflow}
+      />
+      <StepDialog open={createStepOpen} onOpenChange={setCreateStepOpen} workflow={workflow} />
+      <StepDialog
+        open={editingStep !== null}
+        onOpenChange={(open) => {
+          if (!open) {
+            setEditingStep(null);
+          }
+        }}
+        workflow={workflow}
+        step={editingStep ?? undefined}
+      />
+    </div>
   );
 }
 
@@ -298,8 +644,10 @@ export function ApprovalWorkflowSettings() {
     <div className='space-y-6'>
       <div className='flex items-center justify-between gap-4 rounded-lg border p-4'>
         <div>
-          <div className='font-medium'>Approval Workflow Admin</div>
-          <div className='text-muted-foreground text-sm'>Configure sequential CRM approval workflows and business-role steps.</div>
+          <div className='font-medium'>Approval Workflow Builder</div>
+          <div className='text-muted-foreground text-sm'>
+            Configure approval workflows, clone locked flows, and manage ordered steps without touching seed code.
+          </div>
         </div>
         <Button onClick={() => setCreateOpen(true)}>
           <Icons.add className='mr-2 h-4 w-4' />
@@ -309,30 +657,23 @@ export function ApprovalWorkflowSettings() {
 
       {data.items.length === 0 ? (
         <div className='text-muted-foreground rounded-lg border border-dashed p-8 text-center text-sm'>
-          No approval workflows configured.
+          No approval workflows configured yet.
         </div>
       ) : (
-        data.items.map((workflow) => (
-          <div key={workflow.id} className='rounded-xl border p-5'>
-            <div className='flex flex-wrap items-start justify-between gap-4'>
-              <div>
-                <div className='text-xl font-semibold'>{workflow.name}</div>
-                <div className='text-muted-foreground text-sm'>
-                  {workflow.code} • {workflow.entityType}
+        <div className='space-y-4'>
+          {data.items.map((workflow) => (
+            <React.Suspense
+              key={workflow.id}
+              fallback={
+                <div className='text-muted-foreground rounded-lg border p-5 text-sm'>
+                  Loading workflow detail...
                 </div>
-              </div>
-              <div className='flex gap-2'>
-                <Badge variant={workflow.isActive ? 'secondary' : 'outline'}>
-                  {workflow.isActive ? 'Active' : 'Inactive'}
-                </Badge>
-                <Badge variant='outline'>{workflow.stepCount} steps</Badge>
-              </div>
-            </div>
-            <React.Suspense fallback={<div className='text-muted-foreground mt-4 text-sm'>Loading workflow detail...</div>}>
-              <WorkflowDetailActions workflowId={workflow.id} />
+              }
+            >
+              <WorkflowCard workflowId={workflow.id} />
             </React.Suspense>
-          </div>
-        ))
+          ))}
+        </div>
       )}
 
       <WorkflowDialog open={createOpen} onOpenChange={setCreateOpen} />
diff --git a/src/features/foundation/approval/mutations.ts b/src/features/foundation/approval/mutations.ts
index aa4f7f5..640633d 100644
--- a/src/features/foundation/approval/mutations.ts
+++ b/src/features/foundation/approval/mutations.ts
@@ -1,23 +1,32 @@
 import { mutationOptions } from '@tanstack/react-query';
 import { quotationDocumentKeys } from '@/features/crm/quotations/document/queries';
+import { quotationKeys } from '@/features/crm/quotations/api/queries';
 import { getQueryClient } from '@/lib/query-client';
 import {
+  activateApprovalWorkflow,
   approveApproval,
   cancelApproval,
+  cloneApprovalWorkflow,
   createApprovalWorkflow,
+  createApprovalWorkflowStep,
+  deactivateApprovalWorkflow,
   deleteApprovalWorkflow,
+  deleteApprovalWorkflowStep,
   rejectApproval,
-  replaceApprovalWorkflowSteps,
+  reorderApprovalWorkflowSteps,
   returnApproval,
   submitApproval,
   submitQuotationForApproval,
-  updateApprovalWorkflow
+  updateApprovalWorkflow,
+  updateApprovalWorkflowStep
 } from './service';
 import { approvalKeys, approvalWorkflowKeys } from './queries';
-import { quotationKeys } from '@/features/crm/quotations/api/queries';
 import type {
   ApprovalActionPayload,
   ApprovalStepMutationPayload,
+  ApprovalStepReorderPayload,
+  ApprovalStepUpdatePayload,
+  ApprovalWorkflowFilters,
   ApprovalWorkflowMutationPayload,
   SubmitApprovalPayload
 } from './types';
@@ -30,12 +39,20 @@ async function invalidateApprovalDetail(id: string) {
   await getQueryClient().invalidateQueries({ queryKey: approvalKeys.detail(id) });
 }
 
-async function invalidateApprovalWorkflows() {
-  await getQueryClient().invalidateQueries({ queryKey: approvalWorkflowKeys.lists() });
+async function invalidateApprovalWorkflowLists(filters?: ApprovalWorkflowFilters) {
+  const queryClient = getQueryClient();
+  await Promise.all([
+    queryClient.invalidateQueries({ queryKey: approvalWorkflowKeys.lists() }),
+    ...(filters ? [queryClient.invalidateQueries({ queryKey: approvalWorkflowKeys.list(filters) })] : [])
+  ]);
 }
 
 async function invalidateApprovalWorkflowDetail(id: string) {
-  await getQueryClient().invalidateQueries({ queryKey: approvalWorkflowKeys.detail(id) });
+  const queryClient = getQueryClient();
+  await Promise.all([
+    queryClient.invalidateQueries({ queryKey: approvalWorkflowKeys.detail(id) }),
+    queryClient.invalidateQueries({ queryKey: approvalWorkflowKeys.steps(id) })
+  ]);
 }
 
 async function invalidateQuotationQueries(quotationId: string) {
@@ -60,7 +77,7 @@ async function invalidateRelatedEntityQueries(approvalId: string) {
 }
 
 export const submitApprovalMutation = mutationOptions({
-  mutationFn: (data: SubmitApprovalPayload) => submitApproval(data),
+  mutationFn: (values: SubmitApprovalPayload) => submitApproval(values),
   onSettled: async (_data, error) => {
     if (!error) {
       await invalidateApprovalLists();
@@ -68,7 +85,7 @@ export const submitApprovalMutation = mutationOptions({
   }
 });
 
-export const submitQuotationApprovalMutation = mutationOptions({
+export const submitQuotationForApprovalMutation = mutationOptions({
   mutationFn: ({ id, remark }: { id: string; remark?: string }) => submitQuotationForApproval(id, remark),
   onSettled: async (_data, error, variables) => {
     if (!error) {
@@ -77,22 +94,19 @@ export const submitQuotationApprovalMutation = mutationOptions({
   }
 });
 
+export const submitQuotationApprovalMutation = submitQuotationForApprovalMutation;
+
 export const cancelApprovalMutation = mutationOptions({
   mutationFn: (id: string) => cancelApproval(id),
   onSettled: async (_data, error, id) => {
     if (!error) {
-      await Promise.all([
-        invalidateApprovalLists(),
-        invalidateApprovalDetail(id),
-        invalidateRelatedEntityQueries(id)
-      ]);
+      await Promise.all([invalidateApprovalLists(), invalidateApprovalDetail(id), invalidateRelatedEntityQueries(id)]);
     }
   }
 });
 
 export const approveApprovalMutation = mutationOptions({
-  mutationFn: ({ id, values }: { id: string; values: ApprovalActionPayload }) =>
-    approveApproval(id, values),
+  mutationFn: ({ id, values }: { id: string; values: ApprovalActionPayload }) => approveApproval(id, values),
   onSettled: async (_data, error, variables) => {
     if (!error) {
       await Promise.all([
@@ -105,8 +119,7 @@ export const approveApprovalMutation = mutationOptions({
 });
 
 export const rejectApprovalMutation = mutationOptions({
-  mutationFn: ({ id, values }: { id: string; values: ApprovalActionPayload }) =>
-    rejectApproval(id, values),
+  mutationFn: ({ id, values }: { id: string; values: ApprovalActionPayload }) => rejectApproval(id, values),
   onSettled: async (_data, error, variables) => {
     if (!error) {
       await Promise.all([
@@ -119,8 +132,7 @@ export const rejectApprovalMutation = mutationOptions({
 });
 
 export const returnApprovalMutation = mutationOptions({
-  mutationFn: ({ id, values }: { id: string; values: ApprovalActionPayload }) =>
-    returnApproval(id, values),
+  mutationFn: ({ id, values }: { id: string; values: ApprovalActionPayload }) => returnApproval(id, values),
   onSettled: async (_data, error, variables) => {
     if (!error) {
       await Promise.all([
@@ -136,7 +148,7 @@ export const createApprovalWorkflowMutation = mutationOptions({
   mutationFn: (data: ApprovalWorkflowMutationPayload) => createApprovalWorkflow(data),
   onSettled: async (_data, error) => {
     if (!error) {
-      await invalidateApprovalWorkflows();
+      await invalidateApprovalWorkflowLists();
     }
   }
 });
@@ -152,7 +164,7 @@ export const updateApprovalWorkflowMutation = mutationOptions({
   onSettled: async (_data, error, variables) => {
     if (!error) {
       await Promise.all([
-        invalidateApprovalWorkflows(),
+        invalidateApprovalWorkflowLists(),
         invalidateApprovalWorkflowDetail(variables.id)
       ]);
     }
@@ -164,24 +176,103 @@ export const deleteApprovalWorkflowMutation = mutationOptions({
   onSettled: async (_data, error, id) => {
     if (!error) {
       const queryClient = getQueryClient();
-      await invalidateApprovalWorkflows();
+      await invalidateApprovalWorkflowLists();
       queryClient.removeQueries({ queryKey: approvalWorkflowKeys.detail(id) });
+      queryClient.removeQueries({ queryKey: approvalWorkflowKeys.steps(id) });
     }
   }
 });
 
-export const replaceApprovalWorkflowStepsMutation = mutationOptions({
+export const cloneApprovalWorkflowMutation = mutationOptions({
+  mutationFn: (id: string) => cloneApprovalWorkflow(id),
+  onSettled: async (_data, error) => {
+    if (!error) {
+      await invalidateApprovalWorkflowLists();
+    }
+  }
+});
+
+export const activateApprovalWorkflowMutation = mutationOptions({
+  mutationFn: (id: string) => activateApprovalWorkflow(id),
+  onSettled: async (_data, error, id) => {
+    if (!error) {
+      await Promise.all([invalidateApprovalWorkflowLists(), invalidateApprovalWorkflowDetail(id)]);
+    }
+  }
+});
+
+export const deactivateApprovalWorkflowMutation = mutationOptions({
+  mutationFn: (id: string) => deactivateApprovalWorkflow(id),
+  onSettled: async (_data, error, id) => {
+    if (!error) {
+      await Promise.all([invalidateApprovalWorkflowLists(), invalidateApprovalWorkflowDetail(id)]);
+    }
+  }
+});
+
+export const createApprovalWorkflowStepMutation = mutationOptions({
   mutationFn: ({
     workflowId,
-    steps
+    values
   }: {
     workflowId: string;
-    steps: ApprovalStepMutationPayload[];
-  }) => replaceApprovalWorkflowSteps(workflowId, steps),
+    values: ApprovalStepMutationPayload;
+  }) => createApprovalWorkflowStep(workflowId, values),
   onSettled: async (_data, error, variables) => {
     if (!error) {
       await Promise.all([
-        invalidateApprovalWorkflows(),
+        invalidateApprovalWorkflowLists(),
+        invalidateApprovalWorkflowDetail(variables.workflowId)
+      ]);
+    }
+  }
+});
+
+export const updateApprovalWorkflowStepMutation = mutationOptions({
+  mutationFn: ({
+    workflowId,
+    stepId,
+    values
+  }: {
+    workflowId: string;
+    stepId: string;
+    values: ApprovalStepUpdatePayload;
+  }) => updateApprovalWorkflowStep(workflowId, stepId, values),
+  onSettled: async (_data, error, variables) => {
+    if (!error) {
+      await Promise.all([
+        invalidateApprovalWorkflowLists(),
+        invalidateApprovalWorkflowDetail(variables.workflowId)
+      ]);
+    }
+  }
+});
+
+export const deleteApprovalWorkflowStepMutation = mutationOptions({
+  mutationFn: ({ workflowId, stepId }: { workflowId: string; stepId: string }) =>
+    deleteApprovalWorkflowStep(workflowId, stepId),
+  onSettled: async (_data, error, variables) => {
+    if (!error) {
+      await Promise.all([
+        invalidateApprovalWorkflowLists(),
+        invalidateApprovalWorkflowDetail(variables.workflowId)
+      ]);
+    }
+  }
+});
+
+export const reorderApprovalWorkflowStepsMutation = mutationOptions({
+  mutationFn: ({
+    workflowId,
+    values
+  }: {
+    workflowId: string;
+    values: ApprovalStepReorderPayload;
+  }) => reorderApprovalWorkflowSteps(workflowId, values),
+  onSettled: async (_data, error, variables) => {
+    if (!error) {
+      await Promise.all([
+        invalidateApprovalWorkflowLists(),
         invalidateApprovalWorkflowDetail(variables.workflowId)
       ]);
     }
diff --git a/src/features/foundation/approval/queries.ts b/src/features/foundation/approval/queries.ts
index e20b328..1254990 100644
--- a/src/features/foundation/approval/queries.ts
+++ b/src/features/foundation/approval/queries.ts
@@ -2,10 +2,11 @@ import { queryOptions } from '@tanstack/react-query';
 import {
   getApprovalById,
   getApprovalWorkflowById,
+  getApprovalWorkflowSteps,
   getApprovalWorkflows,
   getApprovals
 } from './service';
-import type { ApprovalFilters } from './types';
+import type { ApprovalFilters, ApprovalWorkflowFilters } from './types';
 
 export const approvalKeys = {
   all: ['crm-approvals'] as const,
@@ -18,9 +19,10 @@ export const approvalKeys = {
 export const approvalWorkflowKeys = {
   all: ['crm-approval-workflows'] as const,
   lists: () => [...approvalWorkflowKeys.all, 'list'] as const,
-  list: () => [...approvalWorkflowKeys.lists(), 'all'] as const,
+  list: (filters: ApprovalWorkflowFilters = {}) => [...approvalWorkflowKeys.lists(), filters] as const,
   details: () => [...approvalWorkflowKeys.all, 'detail'] as const,
-  detail: (id: string) => [...approvalWorkflowKeys.details(), id] as const
+  detail: (id: string) => [...approvalWorkflowKeys.details(), id] as const,
+  steps: (workflowId: string) => [...approvalWorkflowKeys.detail(workflowId), 'steps'] as const
 };
 
 export const approvalsQueryOptions = (filters: ApprovalFilters) =>
@@ -35,10 +37,10 @@ export const approvalByIdOptions = (id: string) =>
     queryFn: () => getApprovalById(id)
   });
 
-export const approvalWorkflowsQueryOptions = () =>
+export const approvalWorkflowsQueryOptions = (filters: ApprovalWorkflowFilters = {}) =>
   queryOptions({
-    queryKey: approvalWorkflowKeys.list(),
-    queryFn: () => getApprovalWorkflows()
+    queryKey: approvalWorkflowKeys.list(filters),
+    queryFn: () => getApprovalWorkflows(filters)
   });
 
 export const approvalWorkflowByIdOptions = (id: string) =>
@@ -46,3 +48,9 @@ export const approvalWorkflowByIdOptions = (id: string) =>
     queryKey: approvalWorkflowKeys.detail(id),
     queryFn: () => getApprovalWorkflowById(id)
   });
+
+export const approvalWorkflowStepsOptions = (workflowId: string) =>
+  queryOptions({
+    queryKey: approvalWorkflowKeys.steps(workflowId),
+    queryFn: () => getApprovalWorkflowSteps(workflowId)
+  });
diff --git a/src/features/foundation/approval/server/service.ts b/src/features/foundation/approval/server/service.ts
index 204ad2f..bf1a8fd 100644
--- a/src/features/foundation/approval/server/service.ts
+++ b/src/features/foundation/approval/server/service.ts
@@ -63,7 +63,11 @@ function mapWorkflowRecord(row: typeof crmApprovalWorkflows.$inferSelect): Appro
     code: row.code,
     name: row.name,
     entityType: row.entityType,
+    description: row.description ?? null,
+    isSystem: row.isSystem,
     isActive: row.isActive,
+    createdBy: row.createdBy,
+    updatedBy: row.updatedBy,
     createdAt: row.createdAt.toISOString(),
     updatedAt: row.updatedAt.toISOString(),
     deletedAt: row.deletedAt?.toISOString() ?? null
@@ -78,6 +82,7 @@ function mapStepRecord(row: typeof crmApprovalSteps.$inferSelect): ApprovalStepR
     stepNumber: row.stepNumber,
     roleCode: row.roleCode,
     roleName: row.roleName,
+    approvalMode: row.approvalMode as ApprovalStepRecord['approvalMode'],
     isRequired: row.isRequired,
     createdAt: row.createdAt.toISOString(),
     updatedAt: row.updatedAt.toISOString(),
@@ -285,7 +290,17 @@ export async function listApprovalWorkflows(
 
   return workflows.map((workflow) => ({
     ...mapWorkflowRecord(workflow),
-    stepCount: steps.filter((step) => step.workflowId === workflow.id).length
+    stepCount: steps.filter((step) => step.workflowId === workflow.id).length,
+    usage: {
+      totalRequestCount: 0,
+      activeRequestCount: 0,
+      activeMatrixCount: 0,
+      isLocked: false,
+      lockedReason: null,
+      canEdit: true,
+      canDelete: true,
+      canDeactivate: true
+    }
   }));
 }
 
@@ -298,7 +313,17 @@ export async function getApprovalWorkflow(
 
   return {
     ...mapWorkflowRecord(workflow),
-    steps
+    steps,
+    usage: {
+      totalRequestCount: 0,
+      activeRequestCount: 0,
+      activeMatrixCount: 0,
+      isLocked: false,
+      lockedReason: null,
+      canEdit: true,
+      canDelete: true,
+      canDeactivate: true
+    }
   };
 }
 
@@ -314,7 +339,11 @@ export async function createApprovalWorkflow(
       code: payload.code.trim(),
       name: payload.name.trim(),
       entityType: payload.entityType.trim(),
-      isActive: payload.isActive ?? true
+      description: payload.description ?? null,
+      isSystem: false,
+      isActive: payload.isActive ?? true,
+      createdBy: organizationId,
+      updatedBy: organizationId
     })
     .returning();
 
@@ -333,8 +362,10 @@ export async function updateApprovalWorkflow(
       code: payload.code?.trim() ?? current.code,
       name: payload.name?.trim() ?? current.name,
       entityType: payload.entityType?.trim() ?? current.entityType,
+      description: payload.description !== undefined ? payload.description ?? null : current.description,
       isActive: payload.isActive ?? current.isActive,
-      updatedAt: new Date()
+      updatedAt: new Date(),
+      updatedBy: organizationId
     })
     .where(eq(crmApprovalWorkflows.id, id))
     .returning();
@@ -374,6 +405,7 @@ export async function createApprovalStep(
       stepNumber: payload.stepNumber,
       roleCode: payload.roleCode.trim(),
       roleName: payload.roleName.trim(),
+      approvalMode: payload.approvalMode ?? 'sequential',
       isRequired: payload.isRequired ?? true
     })
     .returning();
@@ -393,6 +425,7 @@ export async function updateApprovalStep(
       stepNumber: payload.stepNumber ?? current.stepNumber,
       roleCode: payload.roleCode?.trim() ?? current.roleCode,
       roleName: payload.roleName?.trim() ?? current.roleName,
+      approvalMode: payload.approvalMode ?? current.approvalMode,
       isRequired: payload.isRequired ?? current.isRequired,
       updatedAt: new Date()
     })
@@ -451,6 +484,7 @@ export async function replaceApprovalWorkflowSteps(
         stepNumber: step.stepNumber ?? index + 1,
         roleCode: step.roleCode.trim(),
         roleName: step.roleName.trim(),
+        approvalMode: step.approvalMode ?? 'sequential',
         isRequired: step.isRequired ?? true
       }))
     )
diff --git a/src/features/foundation/approval/service.ts b/src/features/foundation/approval/service.ts
index 4330753..24dca1a 100644
--- a/src/features/foundation/approval/service.ts
+++ b/src/features/foundation/approval/service.ts
@@ -5,9 +5,13 @@ import type {
   ApprovalFilters,
   ApprovalListResponse,
   ApprovalStepMutationPayload,
+  ApprovalStepReorderPayload,
+  ApprovalStepUpdatePayload,
   ApprovalWorkflowDetailResponse,
+  ApprovalWorkflowFilters,
   ApprovalWorkflowListResponse,
   ApprovalWorkflowMutationPayload,
+  ApprovalWorkflowStepListResponse,
   MutationSuccessResponse,
   SubmitApprovalPayload
 } from './types';
@@ -74,11 +78,18 @@ export async function submitQuotationForApproval(id: string, remark?: string) {
 
 const SETTINGS_BASE = '/crm/settings/approval-workflows';
 
-export async function getApprovalWorkflows() {
-  return apiClient<ApprovalWorkflowListResponse>(SETTINGS_BASE);
+export async function getApprovalWorkflows(
+  filters: ApprovalWorkflowFilters = {}
+): Promise<ApprovalWorkflowListResponse> {
+  const searchParams = new URLSearchParams();
+  if (filters.entityType) searchParams.set('entityType', filters.entityType);
+  if (filters.activeOnly) searchParams.set('activeOnly', 'true');
+
+  const query = searchParams.toString();
+  return apiClient<ApprovalWorkflowListResponse>(`${SETTINGS_BASE}${query ? `?${query}` : ''}`);
 }
 
-export async function getApprovalWorkflowById(id: string) {
+export async function getApprovalWorkflowById(id: string): Promise<ApprovalWorkflowDetailResponse> {
   return apiClient<ApprovalWorkflowDetailResponse>(`${SETTINGS_BASE}/${id}`);
 }
 
@@ -105,12 +116,61 @@ export async function deleteApprovalWorkflow(id: string) {
   });
 }
 
-export async function replaceApprovalWorkflowSteps(
-  workflowId: string,
-  data: ApprovalStepMutationPayload[]
-) {
-  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${workflowId}/steps`, {
-    method: 'PUT',
-    body: JSON.stringify({ steps: data })
+export async function cloneApprovalWorkflow(id: string) {
+  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${id}/clone`, {
+    method: 'POST'
+  });
+}
+
+export async function activateApprovalWorkflow(id: string) {
+  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${id}/activate`, {
+    method: 'POST'
+  });
+}
+
+export async function deactivateApprovalWorkflow(id: string) {
+  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${id}/deactivate`, {
+    method: 'POST'
+  });
+}
+
+export async function getApprovalWorkflowSteps(workflowId: string) {
+  return apiClient<ApprovalWorkflowStepListResponse>(`${SETTINGS_BASE}/${workflowId}/steps`);
+}
+
+export async function createApprovalWorkflowStep(
+  workflowId: string,
+  data: ApprovalStepMutationPayload
+) {
+  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${workflowId}/steps`, {
+    method: 'POST',
+    body: JSON.stringify(data)
+  });
+}
+
+export async function updateApprovalWorkflowStep(
+  workflowId: string,
+  stepId: string,
+  data: ApprovalStepUpdatePayload
+) {
+  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${workflowId}/steps/${stepId}`, {
+    method: 'PATCH',
+    body: JSON.stringify(data)
+  });
+}
+
+export async function deleteApprovalWorkflowStep(workflowId: string, stepId: string) {
+  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${workflowId}/steps/${stepId}`, {
+    method: 'DELETE'
+  });
+}
+
+export async function reorderApprovalWorkflowSteps(
+  workflowId: string,
+  data: ApprovalStepReorderPayload
+) {
+  return apiClient<MutationSuccessResponse>(`${SETTINGS_BASE}/${workflowId}/steps/reorder`, {
+    method: 'POST',
+    body: JSON.stringify(data)
   });
 }
diff --git a/src/features/foundation/approval/types.ts b/src/features/foundation/approval/types.ts
index 661788e..84f339f 100644
--- a/src/features/foundation/approval/types.ts
+++ b/src/features/foundation/approval/types.ts
@@ -1,10 +1,25 @@
+export interface ApprovalWorkflowUsage {
+  totalRequestCount: number;
+  activeRequestCount: number;
+  activeMatrixCount: number;
+  isLocked: boolean;
+  lockedReason: string | null;
+  canEdit: boolean;
+  canDelete: boolean;
+  canDeactivate: boolean;
+}
+
 export interface ApprovalWorkflowRecord {
   id: string;
   organizationId: string;
   code: string;
   name: string;
   entityType: string;
+  description: string | null;
+  isSystem: boolean;
   isActive: boolean;
+  createdBy: string;
+  updatedBy: string;
   createdAt: string;
   updatedAt: string;
   deletedAt: string | null;
@@ -17,6 +32,7 @@ export interface ApprovalStepRecord {
   stepNumber: number;
   roleCode: string;
   roleName: string;
+  approvalMode: 'sequential' | 'any_one' | 'all_required';
   isRequired: boolean;
   createdAt: string;
   updatedAt: string;
@@ -25,10 +41,12 @@ export interface ApprovalStepRecord {
 
 export interface ApprovalWorkflowListItem extends ApprovalWorkflowRecord {
   stepCount: number;
+  usage: ApprovalWorkflowUsage;
 }
 
 export interface ApprovalWorkflowDetail extends ApprovalWorkflowRecord {
   steps: ApprovalStepRecord[];
+  usage: ApprovalWorkflowUsage;
 }
 
 export interface ApprovalRequestRecord {
@@ -95,6 +113,11 @@ export interface ApprovalFilters {
   sort?: string;
 }
 
+export interface ApprovalWorkflowFilters {
+  entityType?: string;
+  activeOnly?: boolean;
+}
+
 export interface SubmitApprovalPayload {
   workflowId?: string;
   workflowCode?: string;
@@ -111,6 +134,7 @@ export interface ApprovalWorkflowMutationPayload {
   code: string;
   name: string;
   entityType: string;
+  description?: string | null;
   isActive?: boolean;
 }
 
@@ -118,17 +142,27 @@ export interface ApprovalStepMutationPayload {
   stepNumber: number;
   roleCode: string;
   roleName: string;
+  approvalMode: 'sequential' | 'any_one' | 'all_required';
   isRequired?: boolean;
 }
 
+export interface ApprovalStepUpdatePayload {
+  roleCode?: string;
+  roleName?: string;
+  approvalMode?: 'sequential' | 'any_one' | 'all_required';
+  isRequired?: boolean;
+}
+
+export interface ApprovalStepReorderPayload {
+  orderedStepIds: string[];
+}
+
 export interface ApprovalListResponse {
   success: boolean;
   time: string;
   message: string;
-  totalItems: number;
-  offset: number;
-  limit: number;
   items: ApprovalListItem[];
+  totalItems: number;
 }
 
 export interface ApprovalDetailResponse {
@@ -152,6 +186,13 @@ export interface ApprovalWorkflowDetailResponse {
   workflow: ApprovalWorkflowDetail;
 }
 
+export interface ApprovalWorkflowStepListResponse {
+  success: boolean;
+  time: string;
+  message: string;
+  items: ApprovalStepRecord[];
+}
+
 export interface MutationSuccessResponse {
   success: boolean;
   message: string;
diff --git a/src/lib/auth/rbac.ts b/src/lib/auth/rbac.ts
index 6b8e7ed..2540d1e 100644
--- a/src/lib/auth/rbac.ts
+++ b/src/lib/auth/rbac.ts
@@ -89,6 +89,10 @@ export const PERMISSIONS = {
   crmApprovalWorkflowCreate: 'crm.approval.workflow.create',
   crmApprovalWorkflowUpdate: 'crm.approval.workflow.update',
   crmApprovalWorkflowDelete: 'crm.approval.workflow.delete',
+  crmApprovalWorkflowClone: 'crm.approval.workflow.clone',
+  crmApprovalWorkflowActivate: 'crm.approval.workflow.activate',
+  crmApprovalWorkflowDeactivate: 'crm.approval.workflow.deactivate',
+  crmApprovalWorkflowStepManage: 'crm.approval.workflow.step.manage',
   crmDashboardRead: 'crm.dashboard.read',
   crmDashboardExport: 'crm.dashboard.export',
   crmReportRead: 'crm.report.read',
@@ -453,6 +457,10 @@ const DEFAULT_ROLE_DEFINITIONS: Record<string, Omit<CrmRoleProfileDefinition, 'c
       PERMISSIONS.crmApprovalWorkflowCreate,
       PERMISSIONS.crmApprovalWorkflowUpdate,
       PERMISSIONS.crmApprovalWorkflowDelete,
+      PERMISSIONS.crmApprovalWorkflowClone,
+      PERMISSIONS.crmApprovalWorkflowActivate,
+      PERMISSIONS.crmApprovalWorkflowDeactivate,
+      PERMISSIONS.crmApprovalWorkflowStepManage,
       PERMISSIONS.crmDocumentTemplateRead,
       PERMISSIONS.crmDocumentTemplateCreate,
       PERMISSIONS.crmDocumentTemplateUpdate,
@@ -613,6 +621,10 @@ export const CRM_PERMISSION_GROUPS: PermissionGroup[] = [
       { key: PERMISSIONS.crmApprovalWorkflowCreate, label: 'Create approval workflows' },
       { key: PERMISSIONS.crmApprovalWorkflowUpdate, label: 'Update approval workflows' },
       { key: PERMISSIONS.crmApprovalWorkflowDelete, label: 'Delete approval workflows' },
+      { key: PERMISSIONS.crmApprovalWorkflowClone, label: 'Clone approval workflows' },
+      { key: PERMISSIONS.crmApprovalWorkflowActivate, label: 'Activate approval workflows' },
+      { key: PERMISSIONS.crmApprovalWorkflowDeactivate, label: 'Deactivate approval workflows' },
+      { key: PERMISSIONS.crmApprovalWorkflowStepManage, label: 'Manage approval workflow steps' },
       { key: PERMISSIONS.crmDocumentTemplateRead, label: 'Read document templates' },
       { key: PERMISSIONS.crmDocumentTemplateCreate, label: 'Create document templates' },
       { key: PERMISSIONS.crmDocumentTemplateUpdate, label: 'Update document templates' },