pallas 0.5.0 targets fast-agent 0.7.15 but pinned it unbounded (>=0.7.15). Deploys install with --upgrade --force-reinstall, so pip pulled 0.9.9, whose major refactor removed fast_agent.core.prompt, fast_agent.mcp.server.AgentMCPServer (the MultimodalAgentMCPServer base class), and the mcp_aggregator/mcp_agent_client_session re-exports — crashing every consumer (kottos, mentor, iolaus) at import time. Pin exactly until pallas is ported to the 0.9.x Harness* API. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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