0.164.0

What's Changed

0.164.0 - 2026-09-20

Highlights

Bug Fixes

• Fail-closed trust and headless-safe auth hints (d366bfd)
• Wire exec_sessions through inline loop initializers (65009bf)
• Align cache hit-rate denominator and preserve envelope on no-op refresh (a7195ee)
• Keep background sessions asynchronous (637dcf8)

Documentation

• Document headless CI contract (630e476)
• Promote exec-session resume hint to contract with golden test (6664258)
• Mark exec-session resume shipped on TODO board (f7e5ce9)

Features

• Async progress UI synced with engine (cdb8b0b)
• Add Step 5 Preview model with 1M context (0249081)
• Promote cross-turn exec-session resume to runtime contract (d18482a)
• Advertise cross-turn resume hint in write_stdin guidance (50f3a8f)
• Support StepFun native Responses reasoning events (e9a7ec6)

Other Changes

Other

• Update TODO (79b2660)
• Update TODO (f8e87b7)
• Update README (79be53e)

Refactors

• Unify prompt cache split in shared module (3aaa596)

Tests

• Cover Exec in TUI predicate test (3111d9f)

Full Changelog: 0.163.3...0.164.0