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refactor(token-meter): simplify singleton service (round 1)

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Hypatia May
2026-07-16 12:58:07 +08:00
parent 7250aaea7e
commit 5c243e8a8d
31 changed files with 653 additions and 1077 deletions
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docs/core-data-structures/token-meter.md
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@@ -8,8 +8,6 @@ Source: [`packages/llm/token-meter/src/types.ts`](../../packages/llm/token-meter
```ts type-equiv
interface TokenMeasurement {
/** Model profile used for every heuristic component. */
readonly model: string
/** Number of durable events consumed; equal to the next unread event seq. */
readonly logRevision: number
/** Provider or heuristic anchor used for this measurement. */
@@ -21,7 +19,7 @@ interface TokenMeasurement {
}
```
`baseline.kind === 'usage'` means a successful provider call has the same model and canonical envelope. `estimated` means the meter repriced the complete envelope and surface. Signed `surfaceDeltaTokens` preserves growth and shrinkage relative to a matching provider or estimated anchor.
`baseline.kind === 'usage'` means the latest successful provider call has the same canonical request envelope. `estimated` means the service priced the complete envelope and surface with its fixed heuristic. A later successful request replaces the earlier anchor; signed `surfaceDeltaTokens` preserves growth and shrinkage relative to a matching anchor.
## `TokenSurfaceNode`
@@ -38,8 +36,6 @@ interface TokenSurfaceNode {
```ts type-equiv
interface TokenSurfaceMeasurement {
/** Model profile used to price every node. */
readonly model: string
/** Number of durable events consumed; equal to the next unread event seq. */
readonly logRevision: number
/** Total heuristic tokens across the current surface. */