MCPJVM-387: SKILL and documentation updates for Execution Orchestrator resiliency

[nimbly-dev]

Description

Once Execution Orchestrator resiliency exists, authoring and usage guidance must be updated so plans and execution profiles are created with the correct project defaults and long-running expectations. This story updates SKILLs and documentation for the new resiliency model.

Scope

In scope:

• update relevant SKILLs to account for required orchestrator resiliency defaults
• document resumed long-running orchestration behavior and required project defaults
• document that resumed execution continues the current in-progress plan rather than rerunning completed plans
• add examples covering long-running watcher and external-verification workflows

Out of scope:

• runtime implementation itself
• full result-rendering redesign outside the scope of orchestrator guidance

Acceptance Criteria

• Relevant SKILLs are updated for required orchestrator resiliency defaults
• Docs/examples show the required projects.json shape for orchestrator resiliency
• Docs/examples explain resumed long-running execution clearly
• Watcher and external-verification-oriented examples are updated to reflect resumed orchestration behavior

Implementation Notes

• Keep examples aligned with the actual required project-default shape and resumed execution semantics.
• Ensure SKILL guidance does not imply plan-level control for orchestrator resiliency.

Testing

• documentation/example verification for required project-default shape
• fixture/example updates as needed for watcher-heavy and external-verification-heavy long-running plans
• SKILL review to confirm authoring guidance reflects resumed execution semantics and bounded-stop behavior