# Roadmap: v1.89 Hypothesis Route Transition Commitment Surface

## Result

`v1.89` is complete.

## Overview

`v1.89` closed the next post-`v1.88` research-control gap around
hypothesis-aware route transition commitment. It derived one bounded
`route_transition_commitment` summary from the current route transition
resumption plus current route state, surfaced the bounded commitment state
through runtime status and replay, and proved the bounded coexistence path with
a dedicated isolated acceptance lane.

**Phases:** 163
**Total Plans:** 1
**Total Tasks:** 2
**Shipped:** 2026-04-12

## Phase Details

### Phase 163: Hypothesis Route Transition Commitment Surface

**Goal:** Add one durable route transition-commitment summary for the current
post-resumption committed-lane state and expose it through runtime/read-path/
replay flows without widening into fresh runtime mutation.

**Plans:** 1 plan

Plans:

- [x] `163-01`: add route transition-commitment summary to runtime/replay
  surfaces and isolated acceptance

**Outcome:**

- landed `route_transition_commitment` payload construction and rendering on
  the runtime/read-path layer
- surfaced `none`, `waiting_resumption`, `pending_commitment`, and `committed`
  state through runtime status, the runtime protocol note, and replay
- aligned schema, docs, and isolated acceptance coverage for the bounded route
  transition-commitment path

## Milestone Summary

**Key Accomplishments:**

- route transition resumption and current route state now join into one
  explicit bounded commitment surface
- runtime status and replay now keep not-started, pending, and committed state
  visible without replacing transition resumption or helper mechanisms
- one isolated acceptance lane now proves bounded transition-commitment
  visibility stays declarative and does not widen into fresh runtime mutation

**Issues Resolved:**

- closed the gap where operators could see resumption but still had to infer
  whether the resumed route had become the durable committed bounded lane
- closed the gap where post-resumption lane commitment still had no explicit
  transition-commitment surface

**Issues Deferred:**

- explicit route-transition authority after commitment
- automatic route commit and follow-up runtime mutation
- automatic branch spawning and multi-branch scheduling

**Technical Debt / Honest Gaps:**

- the first slice makes route commitment visible, but it does not yet surface
  one explicit authority lane for whether the committed route has become the
  authoritative truth across the bounded runtime surfaces

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For current planning state after `v1.89`, continue from the next fresh
milestone definition.
