Optimize the following resume bullet point. If the original lacks metrics or specific details, make realistic/plausible assumptions or provide placeholders like "[metric]%" but prefer general action/outcome structure.

Original Bullet: "{{ raw_bullet }}"
Role/Industry Context: {{ context or "Not provided" }}

Your response must be a single, valid JSON object matching this schema:
{
    "original": "string",
    "optimized": "string",
    "explanation": "string"
}
