Add 13 new procedural datasets across 7 categories

New dataset categories: combinatorics, statistics, optimization, and
formal languages. Extended existing algebra, arithmetic, probability,
logic, and graphs packages with complex_advanced, linear_algebra, limits,
number_theory, conditional_probability, set_operations, and job_scheduling.

Each dataset includes config validation, deterministic seeding, custom
scoring, curriculum support, and comprehensive unit tests (92 new tests).

reasoning_gym/algebra/__init__.py

@@ -1,5 +1,8 @@
+from .complex_advanced import ComplexAdvancedConfig, ComplexAdvancedCurriculum, ComplexAdvancedDataset
 from .complex_arithmetic import ComplexArithmeticConfig, ComplexArithmeticCurriculum, ComplexArithmeticDataset
 from .intermediate_integration import IntermediateIntegrationConfig, IntermediateIntegrationDataset
+from .limits import LimitsConfig, LimitsCurriculum, LimitsDataset
+from .linear_algebra import LinearAlgebraConfig, LinearAlgebraCurriculum, LinearAlgebraDataset
 from .polynomial_equations import PolynomialEquationsConfig, PolynomialEquationsCurriculum, PolynomialEquationsDataset
 from .polynomial_multiplication import (
     PolynomialMultiplicationConfig,
@@ -10,6 +13,9 @@ from .simple_equations import SimpleEquationsConfig, SimpleEquationsCurriculum,
 from .simple_integration import SimpleIntegrationConfig, SimpleIntegrationCurriculum, SimpleIntegrationDataset
 
 __all__ = [
+    "ComplexAdvancedConfig",
+    "ComplexAdvancedDataset",
+    "ComplexAdvancedCurriculum",
     "ComplexArithmeticConfig",
     "ComplexArithmeticDataset",
     "ComplexArithmeticCurriculum",
@@ -27,4 +33,10 @@ __all__ = [
     "PolynomialMultiplicationConfig",
     "PolynomialMultiplicationDataset",
     "PolynomialMultiplicationCurriculum",
+    "LinearAlgebraConfig",
+    "LinearAlgebraDataset",
+    "LinearAlgebraCurriculum",
+    "LimitsConfig",
+    "LimitsDataset",
+    "LimitsCurriculum",
 ]