v0.53.0

Pi Subagents 0.53.0 adds Council Mode, a bounded way to bring multiple advisor profiles into a decision without turning it into open-ended chat. Use /council when a plan, architecture choice, or product decision needs several perspectives, such as an architect, skeptic, and operator. The parent session stays in charge: it chooses the roster, sends each advisor a role, collects independent reports, optionally runs one cross-exam pass, and writes the final decision memo. This release also makes extension-hosted agents easier to build, workflow resumes more durable, and model fallback less wasteful when a model fails or a prompt is too large.

Highlights

• New /council mode helps with material decisions by running a small, bounded group of advisors and ending with a parent-written decision memo.
• Pi extensions can now register runtime agents without writing user or project config.
• Async workflows are easier to resume because completed children now have durable keyed receipts.
• Model fallback is less noisy and less wasteful when a model fails or the prompt is too large.
• Extension RPC hosts can safely inspect status, launch async work, steer children, and manage schedules.

Need to know

No migration is required. To use Council Mode, run /council with a question that has real tradeoffs. You can define council-* advisor profiles for specific models or roles, but the package also falls back to available advisors when those profiles are not present.

Full changelog

Highlights

• New /council mode helps with material decisions by running a small, bounded group of advisors and ending with a parent-written decision memo.
• Pi extensions can now register runtime agents without writing user or project config.
• Async workflows are easier to resume because completed children now have durable keyed receipts.
• Model fallback is less noisy and less wasteful when a model fails or the prompt is too large.
• Extension RPC hosts can safely inspect status, launch async work, steer children, and manage schedules.

Added

• Carry full model registry metadata, including tiered pricing, into normalized model information. Thanks to @srcKod for #1317.
• Add runtime agent registration for Pi extensions, with name and alias collision checks. Thanks to @fmoda3 for #1310.
• Skip recently failed fallback models for a TTL-backed window during model selection. Thanks to @srcKod for #1318.
• Add a schedule-only manage method to extension RPC for list/show/history/pause/resume/run/delete, while rejecting unrelated management actions. Thanks to @aboubakrine for #1319.
• Let agent definitions and agentOverrides set a default outputMode, while
  call-level output mode stays higher priority. Thanks to @bbbRye007 for #1305.
• Add context: "profile" for workflow children that should use the selected
  agent profile's declared context instead of the global default (#1303).
• Add durable keyed async workflow receipts and resume-by-key selectors for
  retained workflow children (#1302).
• Add the resultScanLogging config to control result scan logging. Thanks to @apoapostolov for #1293.
• Add /council and council-mode for bounded advisor councils. Use it for material decisions that need multiple perspectives: the parent picks 2–3 advisors, collects independent reports, optionally runs one cross-exam pass, and writes the final decision memo. The package also documents model-based council-* profile examples (#1295).

Changed

• Show bounded workflow progress in Fleet detail views while keeping workflow
  parents as the only actionable async items (#1304).
• Make /council easier to supervise with structured advisor contracts,
  aggregate pass receipts, and visible pass checkpoints (#1301).
• Reuse validated workflow launch fingerprints during runs.all batch setup, reducing focused fingerprint bookkeeping time by 48.7% (#1287).
• Speed up recent terminal run history reads when the marker history is large and the requested limit is small.
• Reduce repeated serialization while applying async status snapshot byte caps (#1288).

Fixed

• Add tolerant subagent_wait({ stopOnAttention: false }) blocking waits and scale idle attention defaults for higher-thinking children. Thanks to @elecnix for #1315 and #1316.
• Add a separate classifier for model context-overflow errors. Thanks to @srcKod for #1312.
• Normalize child result metadata before workflow return persistence (#1307).
• Quote only confidently identified leading Windows executable paths in acceptance verification commands. Thanks to @srcKod for #1294.
• Keep forked subagent sessions out of top-level pi -c discovery by storing them under the parent session root. Thanks to @xz-dev for #1297.
• Preserve /council advisor context defaults during fallback and cross-exam runs (#1298).