By: Michael Lynch <git@mtlynch.io>
Move Tinybeans conversion into the tinybeans package Add tinybeans.Convert so callers can turn a parsed Tinybeans export into Little Moments-native metadata without reimplementing the mapping logic. This keeps the conversion boundary with the Tinybeans types while leaving reactions work out of scope. Update the import-from-tinybeans command to consume the new package API and add unit tests for successful conversion and missing thumbnail failures.