260321:1700 Correct Coresspondence / Doing RFA

specs/06-Decision-Records/ADR-002-document-numbering-strategy.md

@@ -125,16 +125,18 @@ LCBP3-DMS ต้องสร้างเลขที่เอกสารอั
 CREATE TABLE document_number_formats (
   id INT PRIMARY KEY AUTO_INCREMENT,
   project_id INT NOT NULL,
-  correspondence_type_id INT NULL COMMENT 'Specific Type ID, or NULL for Project Default', -- CHANGED: Allow NULL
+  correspondence_type_id INT NULL COMMENT 'Specific Type ID, or NULL for Project Default',
+  discipline_id INT DEFAULT 0 COMMENT 'Specific Discipline ID, or 0 for All',
   format_template VARCHAR(100) NOT NULL COMMENT 'e.g. {PROJECT}-{TYPE}-{YEAR}-{SEQ:4}',
   description TEXT,
+  is_active BOOLEAN DEFAULT TRUE,
   created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
   updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
 
   FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE,
   FOREIGN KEY (correspondence_type_id) REFERENCES correspondence_types(id) ON DELETE CASCADE,
-  -- Note: Application logic must enforce single default format per project
-  UNIQUE KEY unique_format (project_id, correspondence_type_id)
+  -- Note: Application logic uses automated Upsert based on business key
+  UNIQUE KEY unique_format (project_id, correspondence_type_id, discipline_id)
 ) ENGINE=InnoDB COMMENT='Template configurations for document numbering';
 
 -- Counter Table with Optimistic Locking
@@ -975,3 +977,4 @@ ensure:
 | 1.0     | 2025-11-30 | Initial decision                                                                                  |
 | 2.0     | 2025-12-02 | Updated with comprehensive error scenarios, monitoring, security, and all token types             |
 | 3.0     | 2025-12-17 | Aligned with Requirements v1.6.2: updated counter schema, token definitions, Number State Machine |
+| 4.0     | 2026-03-21 | Added discipline_id to formats, implemented automated Upsert logic for template management           |