🧭 Update Loadmill MCP workflows

[onniaa]

Summary

• Updates suite validation guidance for remote MCP servers to use local schema preflight followed by authoritative validation of a pushed branch HEAD.
• Adds shared-flow discovery, draft authoring, trial, publishing, and activation workflows.
• Documents branch-backed test-plan execution and updates the generation, maintenance, and runner guidance consistently.

Why

• Remote MCP servers cannot read suite files from the client workspace, and large suite payloads are unreliable to transfer directly.
• Agents need clear active-versus-draft semantics and safety boundaries when reusing or modifying shared flows.
• The skill should reflect the MCP capabilities added across Loadmill PRs 4169, 4170, 4171, and 4179.

[chatgpt-codex-connector]

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