E-5 marked waits: a wait on a marked event runs only on the operator's warrant for that one wait

mesh_wait goes through the runner's approval gate (node-tools/internal/approval, Gate.Waited): a wait whose
subjects overlap a marked subject of any module the catalog half lists (the newest entry of every followed
branch, with the served entry of each module this runner serves) is an act of the runner's own module and
build (MESH_FINGERPRINT at its start), asked once on operator-channel as "Wait on <names> on <node>?", and
held, subscribing nothing but its ask's decided, until its timeout, its caller's going or the choice. On a
warrant it subscribes, its timeout running from then, and answers {answer, approval}. Before the marks are
read nothing is asked; a wait from a seat is never marked. The state fixture moves to meshtest so the
console's table can hold a gate.

Builds: design 34 every-event §34, §35, §36, §37; design 47 G lead answer A-168

Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h

node-tools/internal/approval/gate.go

@@ -2,6 +2,7 @@ package approval
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"sort"
 	"strings"
@@ -55,6 +56,12 @@ type Deps struct {
 	Bounds Bounds
 	// Holder says whether a module holds a seat, from the assigner's view of the seats' holders the runner follows (§19).
 	Holder func(seat string) (bool, error)
+	// Build is the tool runner's own fingerprint, read from its MESH_FINGERPRINT at its start: the build a marked wait's
+	// act binds; empty while unknown, when every marked wait is refused (design 34 every-event §35).
+	Build string
+	// Hear waits within the bound for the first event on the subjects whose body match takes, or the caller's going: a
+	// marked wait's ask's `decided` (every-event §36); false when none came.
+	Hear func(ctx context.Context, subjects []string, within time.Duration, match func(json.RawMessage) bool) (bool, error)
 	// Go runs what goes on beside the call (a run's recording); nil is a goroutine.
 	Go func(func())
 }