docs-validation: expand curated markdown scope to include all documentation hubs

Add all documentation subdirectories to the curated markdown linting targets, replacing the previous exclusion-based approach with comprehensive coverage. Update validation to check for required README files across all hubs and verify priority documentation metadata markers. Implement lazy loading for optional dependencies (numpy, redis, bcrypt, jwt, websockets) in agent-coordinator and related modules to improve startup

dev/onboarding/auto-onboard.py

@@ -231,7 +231,7 @@ class AgentOnboarder:
             sys.path.append('/home/oib/windsurf/aitbc/packages/py/aitbc-agent-sdk')
             
             if agent_type == 'compute_provider':
-                from aitbc_agent import ComputeProvider
+                from aitbc_agent.compute_provider import ComputeProvider
                 agent = ComputeProvider.register(
                     agent_name=f"auto-provider-{datetime.utcnow().strftime('%Y%m%d%H%M%S')}",
                     capabilities={
@@ -243,7 +243,7 @@ class AgentOnboarder:
                 )
                 
             elif agent_type == 'compute_consumer':
-                from aitbc_agent import ComputeConsumer
+                from aitbc_agent.compute_consumer import ComputeConsumer
                 agent = ComputeConsumer.create(
                     agent_name=f"auto-consumer-{datetime.utcnow().strftime('%Y%m%d%H%M%S')}",
                     capabilities={
@@ -253,7 +253,7 @@ class AgentOnboarder:
                 )
                 
             elif agent_type == 'platform_builder':
-                from aitbc_agent import PlatformBuilder
+                from aitbc_agent.platform_builder import PlatformBuilder
                 agent = PlatformBuilder.create(
                     agent_name=f"auto-builder-{datetime.utcnow().strftime('%Y%m%d%H%M%S')}",
                     capabilities={
@@ -262,7 +262,7 @@ class AgentOnboarder:
                 )
                 
             elif agent_type == 'swarm_coordinator':
-                from aitbc_agent import SwarmCoordinator
+                from aitbc_agent.swarm_coordinator import SwarmCoordinator
                 agent = SwarmCoordinator.create(
                     agent_name=f"auto-coordinator-{datetime.utcnow().strftime('%Y%m%d%H%M%S')}",
                     capabilities={