Fix schema constraint: allow max > 1 for create-agent-session

[Copilot]

The create-agent-session safe-output schema constrained max to a maximum of 1, causing compilation failures when workflows specified higher values.

Changes

• Schema update: Increased create-agent-session.max limit from 1 to 10 in pkg/parser/schemas/main_workflow_schema.json
• Workflow recompilation: Regenerated security-alert-burndown.lock.yml with updated schema

Context

The security-alert-burndown workflow was updated to create up to 3 agent sessions but failed validation:

safe-outputs:
  create-agent-session:
    base: main
    max: 3  # Previously rejected by schema (max: 1)

The schema now permits realistic batch agent session creation while maintaining reasonable bounds.

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