# Technical Debt

## After Task D

### 1. Database FK

Customer / Contact / Enquiry ยัง enforce relationship ด้วย application logic

Future:

* เพิ่ม FK หลัง schema stable

### 2. Date Input

Form ยังใช้ text input แบบ YYYY-MM-DD

Future:

* เปลี่ยนเป็น Date Picker กลางของระบบ

### 3. Customer Related Enquiries Pagination

หน้า customer detail แสดง related enquiries แล้ว แต่ยังไม่มี pagination

Future:

* เพิ่มเมื่อข้อมูลเริ่มเยอะ

### 4. Follow-up Activity

Activity timeline ยังพึ่ง audit payload

Future:

* ทำ combined activity view/service

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## After Task E

### 5. Mixed Tax Rollup

Quotation item รองรับ taxRate ต่อรายการแล้ว

Current:

* quotation summary ยังใช้ header tax calculation

Future:

* รองรับ mixed tax per line
* aggregate tax จาก item จริง

Priority:

* Medium

### 6. Attachment Storage

Attachment ยังเป็น metadata-only

Current:

* เก็บเฉพาะ metadata

Future:

* storage provider abstraction
* upload service
* download endpoint
* permission check

Priority:

* High

### 7. Revision Snapshot

Revision copy:

* header
* items
* customers
* topics

Current:

* ไม่ copy follow-ups
* ไม่ copy attachments

Future:

* กำหนด revision snapshot strategy ให้ชัดเจน

Priority:

* Medium

### 8. CRM Foreign Keys

Customer
Contact
Enquiry
Quotation

Current:

* ใช้ organization validation ใน application layer

Future:

* เพิ่ม FK เมื่อ schema stable
* review cascade strategy

Priority:

* High

### 9. Approval Workflow Pending

Quotation stabilization in Task E.1 only prepares:

* approval-ready statuses
* revision guard
* placeholder submit-for-approval action

Current:

* no approval table
* no approval requester/approver history
* no multi-step approval rule
* no approval notification

Future:

* introduce approval aggregate in Task F
* separate workflow state from quotation commercial state where needed
* define approver resolution by branch / amount / role

Priority:

* High

## After Task F

### Approval Permission Sync
Existing memberships may not automatically receive new approval permissions.

Future:
- add permission sync script
- admin UI for role/permission management

### Approval Workflow Config UI
Approval workflow is seeded but not configurable from UI.

Future:
- workflow setup screen
- step editor
- approver role mapping

### Approval Notification
Approval workflow has no email/line notification yet.

Future:
- notification queue
- approval reminder

## After Task G

### Document Mapping Editor
Template mappings are seeded and readable, but not yet manageable from UI.

Future:
- mapping CRUD UI
- table column editor
- publish/draft template workflow

### pdfme Render Parity
Document preview is application-native, not pixel-perfect `pdfme` rendering.

Future:
- server-side pdfme render pipeline
- preview image generation
- schema validation against live template versions

### Approved PDF Persistence
Approved snapshot preparation exists, but no binary file generation or storage write-back yet.

Future:
- approved PDF generator
- storage abstraction
- immutable approved artifact URL on quotation