# G6 Host-Bridge Callback State Verification Design

> Date: 2026-04-19
> Status: Draft
> Upstream Report: [2026-04-19-g6-host-bridge-callback-semantics-report.md](D:/data/ideaSpace/rust/sgClaw/claw-new/docs/superpowers/reports/2026-04-19-g6-host-bridge-callback-semantics-report.md)

## 1. Intent

This design defines the next bounded slice after `G6 host-bridge callback semantics`.

The target is:

`G6 host-bridge callback state verification`

## 2. Why This Slice

The callback states are now explicit, but they have not yet been bounded into a verification-oriented slice.

The next pressure is narrower:

1. verify state transitions as a bounded model
2. keep that verification separate from real execution and host-runtime implementation

## 3. Scope Boundary

This design is limited to callback state verification only.

It may include:

1. defining bounded verification targets for `ok/partial/blocked/error`
2. defining what evidence is sufficient for each transition
3. defining how verification narrows a later `G6` real-sample entry

It must not include:

1. implementing host-runtime directly
2. executing a `G6` real sample
3. opening `G8`
4. reopening `G7`

## 4. Target Outcome

The bounded target outcome is one state:

1. one bounded `G6 host-bridge callback state verification` plan

## 5. Exit Condition

This design is complete when implementation can be bounded to one plan that:

1. freezes callback-state verification scope
2. defines bounded verification targets
3. emits one bounded follow-up plan