Implemented a new context policy configuration loader and integrated plan execution context assembly for ACMS. Key additions include:

- New module: src/cleveragents/acms/context_policy_loader.py
  - ContextPolicyConfigurationLoader class for loading YAML/TOML configurations
  - Data models: PolicyScope and ContextPolicyConfig dataclasses
  - ViewPolicyConfiguration for per-view policy management
  - Schema validation to ensure policy configurations adhere to expected structure and constraints
  - Supports loading configurations from both files and strings, with robust error reporting

- New module: src/cleveragents/acms/plan_execution_integration.py
  - ACMSContextAssembler for assembling runtime context based on policy-driven decisions
  - PlanExecutionACMSIntegration to connect with the plan execution engine
  - Flexible policy loading from files or strings, allowing runtime configurability

- BDD tests
  - features/acms_context_policy_loader.feature (20 scenarios) validating loader behavior and policy scoping
  - features/acms_plan_execution_integration.feature (8 scenarios) validating end-to-end plan-context integration
  - features/steps/acms_context_policy_loader_steps.py (step definitions)
  - features/steps/acms_plan_execution_integration_steps.py (step definitions)
  - Tests cover YAML/TOML parsing, validation errors, per-view policy application, and plan integration flows

- Updated exports
  - Updated src/cleveragents/acms/__init__.py to export the two new modules, enabling easier imports and usage

ISSUES CLOSED: #9584

@@ -6,6 +6,16 @@ The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 ## [Unreleased]
 

@@ -0,0 +1,369 @@
+"""Context policy configuration loader for ACMS.

@@ -0,0 +258,4 @@
+
+@then("the policy should match the context")
+def step_policy_matches_context(context: Any) -> None:
+    """Check if the policy matches the context."""

@@ -0,0 +270,4 @@
+    context.policy_config = ViewPolicyConfiguration(
+        view_name="test_view",
+        policies=[
+            ContextPolicyConfig(name="policy1", priority_weight=1.0),

@@ -5,12 +5,28 @@ technology-specific vocabulary extensions, and the DetailLevelMap
 inheritance mechanism for resolving named detail levels across the
 ontology hierarchy (Layer 3 -> Layer 2 -> Layer 1 -> Layer 0).
 

@@ -14,0 +18,4 @@
+    ContextPolicyConfigurationLoader,
+    PolicyScope,
+    ViewPolicyConfiguration,
+)