# T7-34: Workspace Identifier 3-Character Limit

**Priority**: Medium
**Status**: Completed
**Estimated Effort**: 30 minutes

## Description
Update workspace identifier constraints to cap at 3 characters instead of 10, and change default workspace settings to use "DEV" identifier and "development" name.

## Objectives
1. Update Pydantic validation to limit workspace identifier to 2-3 characters
2. Update database schema comments to reflect 2-3 character constraint
3. Change default workspace name from "default" to "development"
4. Change default workspace identifier from "DEFAULT" to "DEV"
5. Create database migration if needed

## Acceptance Criteria
- [x] Workspace identifier validation changed from 2-10 to 1-3 characters
- [x] Pydantic pattern updated to `^[A-Z]{1,3}$`
- [x] Default workspace name is "development"
- [x] Default workspace identifier is "DEV"
- [x] Database schema comments updated
- [x] Tests pass
- [x] Code formatted and linted

## Dependencies
None

## Technical Notes
Files to modify:
- `src/backend/models/workspace.py` - Update CreateWorkspaceInput validation
- `src/backend/db_schema/models.py` - Update comment
- `src/backend/repositories/workspace.py` - Update get_or_create_default method

## Events

### 2025-10-18 - Started implementation
- Created task T7-34
- Identified files to modify
- Beginning implementation

### 2025-10-18 - Completed implementation
- Updated Pydantic validation to 1-3 characters (was 2-10)
- Updated pattern from `^[A-Z]{2,10}$` to `^[A-Z]{1,3}$`
- Changed default workspace from "default"/"DEFAULT" to "development"/"DEV"
- Updated database schema comments to reflect 1-3 character limit
- Updated all test files to use 3-character or shorter identifiers
- Fixed test helper functions to generate valid identifiers
- All tests passing
- Code formatted and linted
