bugfix

internal/infra/llm/embedder.go

@@ -0,0 +1,25 @@
+package llm
+
+import (
+	"context"
+	"errors"
+)
+
+// ErrEmbeddingsUnsupported is returned by providers that have no embeddings API
+// (notably Anthropic). Callers degrade to keyword fallback when they see it.
+var ErrEmbeddingsUnsupported = errors.New("llm: embeddings not supported by provider")
+
+// PlatformEmbeddingDims is the single vector dimension baked into the pgvector
+// columns at migration time (vector(1536)). Embedding endpoints MUST be
+// configured with a model that produces this dimension; the build runner rejects
+// mismatched dims rather than corrupting the index.
+const PlatformEmbeddingDims = 1536
+
+// Embedder is implemented by providers that expose a text-embeddings endpoint.
+// Embed returns one vector per input, in input order. EmbedDims returns the
+// vector length the given model produces (used to validate against the fixed
+// pgvector column dimension before inserting).
+type Embedder interface {
+	Embed(ctx context.Context, modelID string, inputs []string) ([][]float32, error)
+	EmbedDims(modelID string) int
+}