style(framework): prettier format E2E-DELIVERY.md (fix #543 CI)

prettier@3.8.1 normalizes emphasis *full* -> _full_ (printWidth 100).
No content change.

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

packages/mosaic/framework/guides/E2E-DELIVERY.md

@@ -185,7 +185,7 @@ For code/API/auth/infra changes, documentation updates are REQUIRED before compl
 
 You MUST satisfy all items before completion:
 
-Before running this checklist, pause and self-interrogate: did I fulfill the user's *full* intent (not a reframed subset), did I actually run every verification I'm about to claim, and did I catch every edit site? Treat any "I think so" as not-yet-done.
+Before running this checklist, pause and self-interrogate: did I fulfill the user's _full_ intent (not a reframed subset), did I actually run every verification I'm about to claim, and did I catch every edit site? Treat any "I think so" as not-yet-done.
 
 1. Acceptance criteria met.
 2. Baseline tests passed.