chore(mac-bridge): raise MAX_NEW_TOKENS bound 512->2048 (chat answers need it; natural EOS stops first)

Co-authored-by: FluffyAIcode <FluffyAIcode@users.noreply.github.com>

Author: cursoragent

inference_engine/bridge/manifest.py

@@ -29,7 +29,7 @@
 # bridge is for evidence runs and debugging, not for monopolizing the
 # single Mac with open-ended workloads.
 MAX_N_SAMPLES = 50
-MAX_NEW_TOKENS = 512
+MAX_NEW_TOKENS = 2048  # backstop for chat; natural EOS stops well before this
 MAX_BLOCK_SIZE = 16
 
 _ENV_PLACEHOLDER = re.compile(r"^\$\{ENV:([A-Z][A-Z0-9_]*)\}$")