Ground spell extraction with the effective catalog

docs/internal/llm.md

@@ -103,6 +103,13 @@ return defensive copies, and expose a diagnostics map that omits schema bytes.
 The small framework registry contains only generic test schemas; production
 schemas remain package-owned.
 
+The spell extractor's package-owned prompt declares a required
+`application/json` `spell_catalog` input. The extractor generates that input
+from its prepared effective catalog as `{"spell_names":[...]}` using sorted
+canonical names only. Its input digest covers those generated bytes; manifests
+record catalog identity and digest rather than names, aliases, overlay bytes,
+or source metadata.
+
 ## Debug And Redaction Boundaries
 
 The pipeline may wrap the client with a debug recorder that captures prepared