Summarization Fails Since Version 0.250 (`asyncio.run()` RuntimeError)

[diegonix]

Summarization Fails Since Version 0.250 (asyncio.run() RuntimeError)

Version: code_puppy 0.252 Environment: Linux / Python 3.13 Configuration:

[puppy]
compaction_strategy = summarization

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Description

Since upgrading to version 0.250, the summarization (compaction) feature consistently fails with a runtime error related to the event loop.

Even after truncating the history to reduce the message count, the summarization process still fails in the same way.

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Steps to Reproduce

1. Run /compact to trigger summarization. Example output:

   >>> /compact
   🤔 Compacting 762 messages using summarization strategy... (~296587 tokens)
   🔒 Protecting 128 recent messages (49772 tokens, limit: 50000)
   📝 Summarizing 634 older messages
   ~/.cache/uv/.../code_puppy/agents/base_agent.py:504: RuntimeWarning: coroutine '_run_agent_async' was never awaited
     return messages, []  # Return original messages on failure
   RuntimeWarning: Enable tracemalloc to get the object allocation traceback
   Summarization failed during compaction: asyncio.run() cannot be called from a running event loop
   ✨ Done! History: 762 → 762 messages via summarization
   🏦 Tokens: 296,587 → 296,587 (0.0% reduction)
   

2. Truncate message history to reduce size:

   >>> /truncate 700
   Truncated message history from 729 to 700 messages (keeping system message and 699 most recent)
   

3. Try /compact again — failure persists:

   >>> /compact
   🤔 Compacting 700 messages using summarization strategy... (~263787 tokens)
   🔒 Protecting 106 recent messages (49883 tokens, limit: 50000)
   📝 Summarizing 594 older messages
   Summarization failed during compaction: asyncio.run() cannot be called from a running event loop
   ~/.cache/uv/.../base_agent.py:504: RuntimeWarning: coroutine '_run_agent_async' was never awaited
     return messages, []  # Return original messages on failure
   ✨ Done! History: 700 → 700 messages via summarization
   🏦 Tokens: 263,787 → 263,787 (0.0% reduction)
   

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Analysis

The issue appears to be caused by a nested call to asyncio.run() inside an already running event loop (likely from within the async agent runtime). This causes Python to raise RuntimeError: asyncio.run() cannot be called from a running event loop.

In previous versions, summarization likely used the same event loop context or safely awaited the coroutine. The change in 0.250 may have introduced a direct asyncio.run() call from a non-top-level async context.