fix(creation-content): four fragments were reading the blurb back to the player

The creation screen shows a race's blurb on its card and the chosen calling's
blurb in the detail panel directly above the DM panel. Blurb and fragment are on
screen at the same moment, inches apart — so a fragment that paraphrases its own
blurb makes the DM sound like it is reciting the card. Four did:

- bonesetter lifted two clauses verbatim ("you set the bone, you say the words")
- reaver re-ran the blurb's door image with the same sentence shape
- hedge_mage re-opened on "what you know" and re-landed the dead teacher
- beastfolk repeated both the claws and the being-judged beat

Each now says the NEXT thing instead: the hour they wake you and which of the
two trades you will not claim credit for; the employer who arranges to be
elsewhere; where you went to fail safely and what the book's gaps cost your
skin; the town that takes your coin and still wants you outside the walls.

beastfolk's rewrite also breaks the race-set monotony — it no longer opens "You
were born" (now unique to human) and drops the shared "X, and you have…" spine,
so clicking the four cards in a row stops reading as one voice.

The parity test guarded presence but could not fail on the three properties that
actually make all 28 race×calling concatenations grammatical. It now asserts
race fragments start uppercase and end with '.', and calling fragments start
lowercase and end with '.' — verified by breaking both and watching all four new
assertions fire.

255 client tests green; content build --check green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

content/world/callings/bonesetter.json

@@ -1 +1 @@
-{ "id": "bonesetter", "name": "Bonesetter", "blurb": "The Warden is distant and does not explain himself. Still — you set the bone, you say the words, and often enough the rot does not take. Often enough.", "fragment": "you set the bone, you say the words over it, and you have stopped claiming to know which one matters." }
+{ "id": "bonesetter", "name": "Bonesetter", "blurb": "The Warden is distant and does not explain himself. Still — you set the bone, you say the words, and often enough the rot does not take. Often enough.", "fragment": "you are the one they wake at the third hour, and you have stopped claiming to know whether it is your hands or the Warden that does the saving." }