fix(kernel): disable MAX_STEPS limit (0 = unlimited)

Agents were being cut off mid-task at 50 steps. The MAX_STEPS=50
hardcoded limit was silently terminating turns while the model was
actively making tool calls, leaving conversations idle with a
dangling tool-result as the last chunk.

Setting MAX_STEPS to 0 disables the limit — the loop runs until the
model stops making tool calls naturally or the abort signal fires.
The max-steps code path is preserved for when MAX_STEPS > 0.

0 files changed, 0 insertions, 0 deletions