Update field handling guidelines and version to alpha2

- Enhanced Date/Time Handling with null/sentinel date logic (1900-01-01)
- Added 'See Notes' display for sentinel dates with related note fields
- Documented date entry normalization and validation rules
- Added Boolean Field Handling guidelines
- Added Calculated Fields documentation (Active, Due_Date_Counter)
- Added Due_Date_ASAP field specification for urgent job tracking
- Added Pending Schema Updates section
- Version bump to 1.0.0-alpha2

package.json

@@ -1,6 +1,6 @@
 {
   "name": "job-list",
-  "version": "1.0.0",
+  "version": "1.0.0-alpha2",
   "description": "Job-List",
   "type": "module",
   "scripts": {