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fix bundled models generation time

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Fresh package installs could give bundled model catalog
files newer filesystem mtimes than the remote catalog’s Last-Modified timestamp,
causing Pi to ignore newer remote models.
Use the catalog’s recorded generation time instead of installation-dependent file metadata.
This commit is contained in:
David Brailovsky 2026-07-23 13:34:51 +00:00
parent da8dd87260
commit bc3d364742
7 changed files with 40 additions and 39 deletions
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8
packages/ai/scripts/model-data.ts
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@ -2,13 +2,14 @@ import { createHash } from "node:crypto";
import { existsSync, readFileSync, readdirSync, statSync } from "node:fs";
import { join } from "node:path";
export const MODEL_DATA_SCHEMA_VERSION = 2;
export const MODEL_DATA_SCHEMA_VERSION = 3;
export const MODEL_DATA_MANIFEST_FILE = ".manifest.json";
export type ModelDataStructure = Record<string, Record<string, string>>;
export interface ModelDataManifest {
schemaVersion: number;
generatedAt: string;
structureHash: string;
files: Record<string, string>;
}
@ -119,9 +120,11 @@ export function modelDataStructureHash(structure: ModelDataStructure): string {
export function createModelDataManifest(
structure: ModelDataStructure,
fileContents: Readonly<Record<string, string>>,
generatedAt: string,
): ModelDataManifest {
return {
schemaVersion: MODEL_DATA_SCHEMA_VERSION,
generatedAt,
structureHash: modelDataStructureHash(structure),
files: sortedRecord(Object.entries(fileContents).map(([file, content]) => [file, sha256(content)] as const)),
};
@ -203,6 +206,9 @@ export function validateModelDataDirectory(structure: ModelDataStructure, dataDi
`model data schema is ${JSON.stringify(manifest?.schemaVersion)}, expected ${MODEL_DATA_SCHEMA_VERSION}`,
);
}
if (typeof manifest?.generatedAt !== "string" || Number.isNaN(Date.parse(manifest.generatedAt))) {
errors.push("model data manifest has an invalid generation timestamp");
}
const expectedStructureHash = modelDataStructureHash(structure);
if (manifest?.structureHash !== expectedStructureHash) {
errors.push("model data generation stamp does not match the generated catalog");