Fix TS2339 build error: tokens does not exist on ParsedCommandParams

[Copilot]

The build_package_shell CI job was failing because getMcpCommandHandlerTable in mcpAgentProvider.ts accessed params.tokens, which only exists on the internal ParseParamsResult<T> type (dispatcher package), not on the public ParsedCommandParams<T> from @typeagent/agent-sdk.

Changes

• mcpAgentProvider.ts: Replace params.tokens with an explicit collection of arg values from params.args, keyed by the ArgDefinitions passed to the outer function (preserving definition order):

  const serverScriptArgs = Object.keys(args).map((k) =>
      String((params.args as Record<string, unknown>)[k]),
  );

• Update the run callback parameter type from ParsedCommandParams<{}> to ParsedCommandParams<ParameterDefinitions> to match the CommandHandler interface.
• Add ParameterDefinitions to the import from @typeagent/agent-sdk.

Original prompt

Fix the failing GitHub Actions workflow build_package_shell (windows-latest, 22)
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 68268369843
Job URL: https://github.com/microsoft/TypeAgent/actions/runs/23462848733/job/68268369843

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