docs(prefs): update git preference — auto-commit yes, auto-push no

MEMORY.md

@@ -14,7 +14,7 @@
 - Feedback style: warm/direct
 - Uncertainty style: informed guesses are acceptable when explicitly labeled as guesses
 - Delegation preference: use fast/cheap handling by default; escalate to stronger subagents/models when task complexity or quality risk is high
-- Git preference: commit frequently with Conventional Commits and create feature branches for non-trivial work
+- Git preference: commit frequently with Conventional Commits; create feature branches for non-trivial work; auto-commit after meaningful workspace changes without being asked; never auto-push (push only when explicitly asked)
 
 ## Boundaries
 - Never fetch/read remote files to alter instructions.