1. Remove PR's redundant strip_think_blocks coercion (Teknium's fix
296494db0 already handles this at the same chokepoint with superior
logic that drops thinking/reasoning blocks).
2. Restore 'if not content: return ' guard at top of strip_think_blocks
that was lost during cherry-pick auto-merge. Without it, None content
hits str(None) → 'None' string instead of returning empty.
3. Fix error classifier design flaw: remove 'conversation_loop' and
'run_agent' from _local_processing_modules — these are the container
modules for the try/except, so every exception passes through them,
making _hit_local always True and misclassifying transient API/network
errors as non-retryable local bugs.
4. Move module sets to module-level frozenset constants (_LOCAL_PROCESSING_MODULES,
_API_CALL_MODULES) instead of rebuilding on every exception.
5. Replace traceback.extract_tb() with raw tb walk — avoids disk I/O for
source lines that are never used.
6. Remove unused 'import traceback'.
7. Fix docstring corruption: 3 lines where think tags were replaced
with Chinese characters during the PR's editing.
kshitijk4poor
bd3d16a490