v0.4.1

Documentation

• Document the [harness] extra — it has existed since the CodeMode work but
  integrations.md only covered the two DRF bridges, so the third extra was
  undiscoverable. The new section covers the seam (AgentConfig.capabilities
  takes live capability instances, so a harness capability composes exactly like
  a first-party one), compaction for long tool-heavy runs, and agent
  skills for progressive disclosure.
  • Compaction is presented by cost, since that is the real choice:
    SlidingWindow / ClearToolResults are free and transparent,
    SummarizingCompaction spends a model call per compaction,
    TieredCompaction escalates between them.
  • Two gotchas found by running the snippets rather than reading the source:
    SummarizingCompaction requires max_messages or max_tokens, and
    Skills(include=…/exclude=…) validates the names against what discovery
    actually found — a name that matches no skill raises rather than being
    ignored.
  • Also recorded: nothing is emitted when a compaction fires, so a transport
    that wants to tell the user "earlier turns were condensed" has to observe it
    via the one-method CompactionStrategy protocol.