v0.5.0 Fine Sift

Fine Sift — Subflow Transition Overhaul

Highlights

• Subflow exit resolution: exit names now resolve through the parent flow's transition map instead of being used directly as state IDs
• Subflow chaining: atomic exit + re-enter next subflow (e.g., discovery-flow → architecture-flow) without manual state manipulation
• Recursive subflow entry: handles 3-level nesting (main-flow → feature-dev-flow → planning-flow)
• JSON-first output: --json flag replaced with --text; JSON is now the default for all commands
• next shows all transitions: includes blocked/guarded transitions with trigger→target mapping, status markers, and condition hints

New Features

• states --session — list states in the current (sub)flow
• validate --session — validate the current (sub)flow
• check --session <trigger> — show transition conditions for a trigger (fixed argparse bug)
• session init auto-enters subflow when first state has flow: field

Bug Fixes

• resolve_subflows() .yaml extension fallback for flow references without extension
• Stack frame records correct parent state (subflow wrapper, not pre-transition state)
• check --session <target> argparse consuming target as flow_file

Full Changelog: v0.4.0...v0.5.0