Add pyproject.toml for consolidated project configuration and replace Black, isort, and Flake8 with Ruff

- Introduced `pyproject.toml` to centralize backend tool configurations (e.g., Ruff, mypy, coverage, pytest).
- Replaced Black, isort, and Flake8 with Ruff for linting, formatting, and import sorting.
- Updated `requirements.txt` to include Ruff and remove replaced tools.
- Added `Makefile` to streamline development workflows with commands for linting, formatting, type-checking, testing, and cleanup.

backend/tests/schemas/test_organizations.py

@@ -5,6 +5,7 @@ Covers Pydantic validators for:
 - Slug validation (lines 26, 28, 30, 32, 62-70)
 - Name validation (lines 40, 77)
 """
+
 import pytest
 from pydantic import ValidationError
 
@@ -20,19 +21,13 @@ class TestOrganizationBaseValidators:
 
     def test_valid_organization_base(self):
         """Test that valid data passes validation."""
-        org = OrganizationBase(
-            name="Test Organization",
-            slug="test-org"
-        )
+        org = OrganizationBase(name="Test Organization", slug="test-org")
         assert org.name == "Test Organization"
         assert org.slug == "test-org"
 
     def test_slug_none_returns_none(self):
         """Test that None slug is allowed (covers line 26)."""
-        org = OrganizationBase(
-            name="Test Organization",
-            slug=None
-        )
+        org = OrganizationBase(name="Test Organization", slug=None)
         assert org.slug is None
 
     def test_slug_invalid_characters_rejected(self):
@@ -40,57 +35,46 @@ class TestOrganizationBaseValidators:
         with pytest.raises(ValidationError) as exc_info:
             OrganizationBase(
                 name="Test Organization",
-                slug="Test_Org!"  # Uppercase and special chars
+                slug="Test_Org!",  # Uppercase and special chars
             )
         errors = exc_info.value.errors()
-        assert any("lowercase letters, numbers, and hyphens" in str(e['msg']) for e in errors)
+        assert any(
+            "lowercase letters, numbers, and hyphens" in str(e["msg"]) for e in errors
+        )
 
     def test_slug_starts_with_hyphen_rejected(self):
         """Test slug starting with hyphen is rejected (covers line 30)."""
         with pytest.raises(ValidationError) as exc_info:
-            OrganizationBase(
-                name="Test Organization",
-                slug="-test-org"
-            )
+            OrganizationBase(name="Test Organization", slug="-test-org")
         errors = exc_info.value.errors()
-        assert any("cannot start or end with a hyphen" in str(e['msg']) for e in errors)
+        assert any("cannot start or end with a hyphen" in str(e["msg"]) for e in errors)
 
     def test_slug_ends_with_hyphen_rejected(self):
         """Test slug ending with hyphen is rejected (covers line 30)."""
         with pytest.raises(ValidationError) as exc_info:
-            OrganizationBase(
-                name="Test Organization",
-                slug="test-org-"
-            )
+            OrganizationBase(name="Test Organization", slug="test-org-")
         errors = exc_info.value.errors()
-        assert any("cannot start or end with a hyphen" in str(e['msg']) for e in errors)
+        assert any("cannot start or end with a hyphen" in str(e["msg"]) for e in errors)
 
     def test_slug_consecutive_hyphens_rejected(self):
         """Test slug with consecutive hyphens is rejected (covers line 32)."""
         with pytest.raises(ValidationError) as exc_info:
-            OrganizationBase(
-                name="Test Organization",
-                slug="test--org"
-            )
+            OrganizationBase(name="Test Organization", slug="test--org")
         errors = exc_info.value.errors()
-        assert any("cannot contain consecutive hyphens" in str(e['msg']) for e in errors)
+        assert any(
+            "cannot contain consecutive hyphens" in str(e["msg"]) for e in errors
+        )
 
     def test_name_whitespace_only_rejected(self):
         """Test whitespace-only name is rejected (covers line 40)."""
         with pytest.raises(ValidationError) as exc_info:
-            OrganizationBase(
-                name="   ",
-                slug="test-org"
-            )
+            OrganizationBase(name="   ", slug="test-org")
         errors = exc_info.value.errors()
-        assert any("name cannot be empty" in str(e['msg']) for e in errors)
+        assert any("name cannot be empty" in str(e["msg"]) for e in errors)
 
     def test_name_trimmed(self):
         """Test that name is trimmed."""
-        org = OrganizationBase(
-            name="  Test Organization  ",
-            slug="test-org"
-        )
+        org = OrganizationBase(name="  Test Organization  ", slug="test-org")
         assert org.name == "Test Organization"
 
 
@@ -99,22 +83,18 @@ class TestOrganizationCreateValidators:
 
     def test_valid_organization_create(self):
         """Test that valid data passes validation."""
-        org = OrganizationCreate(
-            name="Test Organization",
-            slug="test-org"
-        )
+        org = OrganizationCreate(name="Test Organization", slug="test-org")
         assert org.name == "Test Organization"
         assert org.slug == "test-org"
 
     def test_slug_validation_inherited(self):
         """Test that slug validation is inherited from base."""
         with pytest.raises(ValidationError) as exc_info:
-            OrganizationCreate(
-                name="Test",
-                slug="Invalid_Slug!"
-            )
+            OrganizationCreate(name="Test", slug="Invalid_Slug!")
         errors = exc_info.value.errors()
-        assert any("lowercase letters, numbers, and hyphens" in str(e['msg']) for e in errors)
+        assert any(
+            "lowercase letters, numbers, and hyphens" in str(e["msg"]) for e in errors
+        )
 
 
 class TestOrganizationUpdateValidators:
@@ -122,10 +102,7 @@ class TestOrganizationUpdateValidators:
 
     def test_valid_organization_update(self):
         """Test that valid update data passes validation."""
-        org = OrganizationUpdate(
-            name="Updated Name",
-            slug="updated-slug"
-        )
+        org = OrganizationUpdate(name="Updated Name", slug="updated-slug")
         assert org.name == "Updated Name"
         assert org.slug == "updated-slug"
 
@@ -139,35 +116,39 @@ class TestOrganizationUpdateValidators:
         with pytest.raises(ValidationError) as exc_info:
             OrganizationUpdate(slug="Test_Org!")
         errors = exc_info.value.errors()
-        assert any("lowercase letters, numbers, and hyphens" in str(e['msg']) for e in errors)
+        assert any(
+            "lowercase letters, numbers, and hyphens" in str(e["msg"]) for e in errors
+        )
 
     def test_update_slug_starts_with_hyphen_rejected(self):
         """Test update slug starting with hyphen is rejected (covers line 66)."""
         with pytest.raises(ValidationError) as exc_info:
             OrganizationUpdate(slug="-test-org")
         errors = exc_info.value.errors()
-        assert any("cannot start or end with a hyphen" in str(e['msg']) for e in errors)
+        assert any("cannot start or end with a hyphen" in str(e["msg"]) for e in errors)
 
     def test_update_slug_ends_with_hyphen_rejected(self):
         """Test update slug ending with hyphen is rejected (covers line 66)."""
         with pytest.raises(ValidationError) as exc_info:
             OrganizationUpdate(slug="test-org-")
         errors = exc_info.value.errors()
-        assert any("cannot start or end with a hyphen" in str(e['msg']) for e in errors)
+        assert any("cannot start or end with a hyphen" in str(e["msg"]) for e in errors)
 
     def test_update_slug_consecutive_hyphens_rejected(self):
         """Test update slug with consecutive hyphens is rejected (covers line 68)."""
         with pytest.raises(ValidationError) as exc_info:
             OrganizationUpdate(slug="test--org")
         errors = exc_info.value.errors()
-        assert any("cannot contain consecutive hyphens" in str(e['msg']) for e in errors)
+        assert any(
+            "cannot contain consecutive hyphens" in str(e["msg"]) for e in errors
+        )
 
     def test_update_name_whitespace_only_rejected(self):
         """Test whitespace-only name in update is rejected (covers line 77)."""
         with pytest.raises(ValidationError) as exc_info:
             OrganizationUpdate(name="   ")
         errors = exc_info.value.errors()
-        assert any("name cannot be empty" in str(e['msg']) for e in errors)
+        assert any("name cannot be empty" in str(e["msg"]) for e in errors)
 
     def test_update_name_none_allowed(self):
         """Test that None name is allowed in update."""