Vikings: Valhalla: Season 3

Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for "Vikings: Valhalla" Season 3.
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown, no asterisks, no headings, no bullet points (in the overview/text, though primer is an array). Output valid JSON only.
Content constraints:
overview: 160-220 words.
primer: Exactly 4 concise bullet points.
Synopsis: "Picking up up seven years after the conclusion of Season 2, Freydis is now the undisputed leader of pagan Jomsborg, and Leif and Harald have achieved glory in Constantinople. But greater challenges lie ahead in order for each to reach their ultimate destiny."
Source [1]: Series title, year 2022.
Source [2]: Cast/crew info.
Source [3]: Mentions creative lineage with "Vikings" and "Vikings: Valhalla".
Source [4]: Cast names: Sam Corlett (Leif Eriksson), Frida Gustavsson (Freydis Eriksdotter), Leo Suter (Harald Sigurdsson), Laura Berlin (Emma of Normandy).
Source [5]: Creator Michael Hirst, Jeb Stuart. Running time 52 min.
Overview Construction:
The synopsis is very short: "Picking up up seven years after the conclusion of Season 2, Freydis is now the undisputed leader of pagan Jomsborg, and Leif and Harald have achieved glory in Constantinople. But greater challenges lie ahead in order for each to reach their ultimate destiny."
I need to expand this to 160-220 words using only provided info.
Wait, the synopsis is only about 45 words. If I am restricted to only the provided synopsis and sources, I cannot invent details to reach the word count.
The prompt says: "Write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES. You never invent or guess... If a detail is not in the provided material, you omit it rather than guess."
This creates a conflict: The prompt asks for a 160-220 word summary, but the source material only provides enough information for a ~45 word summary.
As an archivist, I must prioritize the "ONLY verifiable facts" and "never invent" instruction over the word count instruction if the word count requires invention. However,