chore(context): refactor for consistency, optimize formatting, and simplify logic

- Cleaned up unnecessary comments in `__all__` definitions for better readability.
- Adjusted indentation and formatting across modules for improved clarity (e.g., long lines, logical grouping).
- Simplified conditional expressions and inline comments for context scoring and ranking.
- Replaced some hard-coded values with type-safe annotations (e.g., `ClassVar`).
- Removed unused imports and ensured consistent usage across test files.
- Updated `test_score_not_cached_on_context` to clarify caching behavior.
- Improved truncation strategy logic and marker handling.

backend/app/services/context/__init__.py

@@ -124,71 +124,55 @@ from .types import (
 )
 
 __all__ = [
-    # Adapters
-    "ClaudeAdapter",
-    "DefaultAdapter",
-    "get_adapter",
-    "ModelAdapter",
-    "OpenAIAdapter",
-    # Assembly
-    "ContextPipeline",
-    "PipelineMetrics",
-    # Budget Management
-    "BudgetAllocator",
-    "TokenBudget",
-    "TokenCalculator",
-    # Cache
-    "ContextCache",
-    # Engine
-    "ContextEngine",
-    "create_context_engine",
-    # Compression
-    "ContextCompressor",
-    "TruncationResult",
-    "TruncationStrategy",
-    # Configuration
-    "ContextSettings",
-    "get_context_settings",
-    "get_default_settings",
-    "reset_context_settings",
-    # Exceptions
+    "AssembledContext",
     "AssemblyTimeoutError",
+    "BaseContext",
+    "BaseScorer",
+    "BudgetAllocator",
     "BudgetExceededError",
     "CacheError",
+    "ClaudeAdapter",
+    "CompositeScorer",
     "CompressionError",
+    "ContextCache",
+    "ContextCompressor",
+    "ContextEngine",
     "ContextError",
     "ContextNotFoundError",
+    "ContextPipeline",
+    "ContextPriority",
+    "ContextRanker",
+    "ContextSettings",
+    "ContextType",
+    "ConversationContext",
+    "DefaultAdapter",
     "FormattingError",
     "InvalidContextError",
-    "ScoringError",
-    "TokenCountError",
-    # Prioritization
-    "ContextRanker",
-    "RankingResult",
-    # Scoring
-    "BaseScorer",
-    "CompositeScorer",
+    "KnowledgeContext",
+    "MessageRole",
+    "ModelAdapter",
+    "OpenAIAdapter",
+    "PipelineMetrics",
     "PriorityScorer",
+    "RankingResult",
     "RecencyScorer",
     "RelevanceScorer",
     "ScoredContext",
-    # Types - Base
-    "AssembledContext",
-    "BaseContext",
-    "ContextPriority",
-    "ContextType",
-    # Types - Conversation
-    "ConversationContext",
-    "MessageRole",
-    # Types - Knowledge
-    "KnowledgeContext",
-    # Types - System
+    "ScoringError",
     "SystemContext",
-    # Types - Task
     "TaskComplexity",
     "TaskContext",
     "TaskStatus",
-    # Types - Tool
+    "TokenBudget",
+    "TokenCalculator",
+    "TokenCountError",
     "ToolContext",
     "ToolResultStatus",
+    "TruncationResult",
+    "TruncationStrategy",
+    "create_context_engine",
+    "get_adapter",
+    "get_context_settings",
+    "get_default_settings",
+    "reset_context_settings",
 ]