pi-subagents 0.40.0

Added

• Documented an optional recommended model-tiering setup in the README: fast workhorse, standard well-scoped, deep-but-bounded, and taste/intent tiers, with cross-provider fallbackModels guidance for usage-limit resilience.
• Added description to subagents.agentOverrides so deployments can replace the discovered description for builtin and custom agents in list output. Thanks to @chronoAP for #724.

Changed

• Refreshed the bundled pi-subagents skill for the 0.39 surface: Fleet inspector live controls (s steer, D stop), the recommended model-tiering recipe, agentOverrides.description, projectRootResolution: "git-root", running-card live-detail/model badges, and the newer extension RPC capability projections (fleetStatus, launchResolvedExtensions, runtimeAcknowledgedExtensions, (runId, index) correlation). Corrected the stale README "inspection-only" fleet inspector wording.

Fixed

• Grouped intercom results now report child process status separately from provenance-aware output availability, including salvage guidance when a failed process produced output. Thanks to @youlikemodernart for #727.
• Collapsed running foreground subagent rows now show the model and thinking level: single-result cards include the effective thinking suffix and parallel/chain rows show the per-child model badge, matching the async widget.