fix: Comprehensive validation and bug fixes

Infrastructure:
- Add Redis and Celery workers to all docker-compose files
- Fix celery migration race condition in entrypoint.sh
- Add healthchecks and resource limits to dev compose
- Update .env.template with Redis/Celery variables

Backend Models & Schemas:
- Rename Sprint.completed_points to velocity (per requirements)
- Add AgentInstance.name as required field
- Rename Issue external tracker fields for consistency
- Add IssueSource and TrackerType enums
- Add Project.default_tracker_type field

Backend Fixes:
- Add Celery retry configuration with exponential backoff
- Remove unused sequence counter from EventBus
- Add mypy overrides for test dependencies
- Fix test file using wrong schema (UserUpdate -> dict)

Frontend Fixes:
- Fix memory leak in useProjectEvents (proper cleanup)
- Fix race condition with stale closure in reconnection
- Sync TokenWithUser type with regenerated API client
- Fix expires_in null handling in useAuth
- Clean up unused imports in prototype pages
- Add ESLint relaxed rules for prototype files

CI/CD:
- Add E2E testing stage with Testcontainers
- Add security scanning with Trivy and pip-audit
- Add dependency caching for faster builds

Tests:
- Update all tests to use renamed fields (velocity, name, etc.)
- Fix 14 schema test failures
- All 1500 tests pass with 91% coverage

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/tests/schemas/syndarix/test_sprint_schemas.py

@@ -34,7 +34,7 @@ class TestSprintCreateValidation:
         assert sprint.status == SprintStatus.PLANNED
         assert sprint.goal is None
         assert sprint.planned_points is None
-        assert sprint.completed_points is None
+        assert sprint.velocity is None
 
     def test_sprint_create_with_all_fields(self, valid_uuid):
         """Test creating sprint with all optional fields."""
@@ -49,7 +49,7 @@ class TestSprintCreateValidation:
             end_date=today + timedelta(days=14),
             status=SprintStatus.PLANNED,
             planned_points=21,
-            completed_points=0,
+            velocity=0,
         )
 
         assert sprint.name == "Full Sprint"
@@ -252,8 +252,8 @@ class TestSprintPointsValidation:
         errors = exc_info.value.errors()
         assert any("planned_points" in str(e).lower() for e in errors)
 
-    def test_valid_completed_points(self, valid_uuid):
-        """Test valid completed_points values."""
+    def test_valid_velocity(self, valid_uuid):
+        """Test valid velocity values."""
         today = date.today()
 
         for points in [0, 5, 21]:
@@ -263,26 +263,26 @@ class TestSprintPointsValidation:
                 number=1,
                 start_date=today,
                 end_date=today + timedelta(days=14),
-                completed_points=points,
+                velocity=points,
             )
-            assert sprint.completed_points == points
+            assert sprint.velocity == points
 
-    def test_completed_points_negative_fails(self, valid_uuid):
-        """Test that negative completed_points raises ValidationError."""
+    def test_velocity_negative_fails(self, valid_uuid):
+        """Test that negative velocity raises ValidationError."""
         today = date.today()
 
         with pytest.raises(ValidationError) as exc_info:
             SprintCreate(
                 project_id=valid_uuid,
-                name="Negative Completed Sprint",
+                name="Negative Velocity Sprint",
                 number=1,
                 start_date=today,
                 end_date=today + timedelta(days=14),
-                completed_points=-1,
+                velocity=-1,
             )
 
         errors = exc_info.value.errors()
-        assert any("completed_points" in str(e).lower() for e in errors)
+        assert any("velocity" in str(e).lower() for e in errors)
 
 
 class TestSprintUpdateValidation:
@@ -310,7 +310,7 @@ class TestSprintUpdateValidation:
             end_date=today + timedelta(days=21),
             status=SprintStatus.ACTIVE,
             planned_points=34,
-            completed_points=20,
+            velocity=20,
         )
 
         assert update.name == "Updated Name"