Function tokensToPiUsage

packages/cli/src/commands/migrate.ts:300–314

* Build a Pi-shaped `usage` object from OpenCode `message.tokens`. * * OpenCode shape: `{ total, input, output, reasoning, cache: { read, write } }`. * Pi shape: `{ input, output, cacheRead, cacheWrite, totalTokens, cost: {...} }`. * * Pi's interactive footer reads `entry.message.usage.input` o

(tokens: OpenCodeMessageTokens | undefined)

 * Pi's footer aggregator handles missing cost gracefully.
 */
function tokensToPiUsage(tokens: OpenCodeMessageTokens | undefined): Record<string, unknown> {
    const input = tokens?.input ?? 0;
    const output = tokens?.output ?? 0;
    const cacheRead = tokens?.cache?.read ?? 0;
    const cacheWrite = tokens?.cache?.write ?? 0;
    const total = tokens?.total ?? input + output + cacheRead + cacheWrite;
    return {
        input,
        output,
        cacheRead,
        cacheWrite,
        totalTokens: total,
        cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
    };
}

function makeMessageEntry(
    role: "user" | "assistant",