| /** | |
| * Tunables for brief-dedup (Jaccard legacy + embedding replacement). | |
| * | |
| * Env-driven helpers are exported as functions so the orchestrator | |
| * reads them at call time, not at module load — Railway env-var flips | |
| * must take effect without a redeploy. | |
| * | |
| * See docs/plans/2026-04-19-001-feat-embedding-based-story-dedup-plan.md. | |
| */ | |
| // ── Jaccard (legacy path, kept as permanent fallback) ─────────────────── | |
| // Preserves origin/main behaviour byte-for-byte under MODE=jaccard. | |
| // Threshold 0.55 matches the production implementation prior to this PR. | |
| export const JACCARD_MERGE_THRESHOLD = 0.55; | |
| // ── Embedding / complete-link clustering ──────────────────────────────── | |
| export const EMBED_MODEL = 'openai/text-embedding-3-small'; | |
| export const EMBED_DIMS = 512; | |
| // Cache key prefix — version segment MUST bump on model or dimension | |
| // change. Silent threshold drift on model upgrade is the documented | |
| // #1 production regression; don't rely on TTL expiry to drain stale | |
| // vectors. | |
| export const CACHE_VERSION = 'v1:text-3-small-512'; | |
| export const CACHE_KEY_PREFIX = `brief:emb:${CACHE_VERSION}`; | |
| export const CACHE_TTL_SECONDS = 14 * 24 * 60 * 60; // 14 days | |
| // OpenRouter embeddings endpoint (OpenAI-compatible passthrough). | |
| export const OPENROUTER_EMBEDDINGS_URL = 'https://openrouter.ai/api/v1/embeddings'; | |
| // Env-driven runtime knobs live in brief-dedup.mjs:readOrchestratorConfig | |
| // — a single source of truth, read at call entry so Railway env flips | |
| // take effect on the next tick. An earlier version exported getter | |
| // helpers here too; they had zero callers and were deleted. | |
| // An earlier iteration exposed an `__constants` bag so tests could | |
| // assert against tunables in one deepEqual. Once the regex-extraction | |
| // harness was removed, named imports became cleaner — the bag got | |
| // deleted. If you need to assert a constant, import it directly. | |