content(creation): the eleven origin fragments

race.fragment + calling.fragment compose the DM origin panel on the creation
screen. Authored prose, not stubs — this is the first sentence the player reads.
Parity-tested: a missing or empty fragment fails the suite.

content/world/callings/reaver.json

@@ -1 +1 @@
-{ "id": "reaver", "name": "Reaver", "blurb": "They hire you when they want a door opened and do not care about the door. You do not wear plate. You have never needed it." }
+{ "id": "reaver", "name": "Reaver", "blurb": "They hire you when they want a door opened and do not care about the door. You do not wear plate. You have never needed it.", "fragment": "they point you at a door and pay you not to care what is behind it." }