A module depends on the node seats that apply its resources (hq ADR 0207)

Seed node-package-manager and node-container-runtime. Derive each module's
dependencies from its declared service, package and container resources;
judge them over the node's whole set, exempting the foundation. Refuse at
assign (several modules may go on as one act) and at unassign of the last
holder; report at composition in status, behind one switch.

cmd/mesh-controller/readable.go

@@ -3,6 +3,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"github.com/novox/mesh-controller/internal/catalogue"
 	"github.com/novox/mesh-controller/internal/inventory"
 	"sort"
 	"time"
@@ -73,6 +74,10 @@ type meshStatus struct {
 	// alone. A document without this called a machine well while a predecessor's chain refused
 	// what the mesh declared open.
 	Filtered []machineFiltered `json:"filtered,omitempty"`
+	// Unheld is every module on a machine whose resources are applied through a seat nothing on
+	// that machine holds, with the modules that could hold it (novox/hq ADR 0207). Absent when every
+	// dependency is met. Reported, not refused, until the switch.
+	Unheld []catalogue.Unheld `json:"unheld,omitempty"`
 }
 
 // machineFiltered is one rule set on a converged machine that the mesh did not write and that
@@ -204,6 +209,7 @@ func statusAsJSON(asked answers) ([]byte, error) {
 			out.Filtered = append(out.Filtered, machineFiltered{Node: name, Where: x.Where, Owner: x.Owner, Refuses: x.Refuses})
 		}
 	}
+	out.Unheld = asked.unheld
 	for name := range asked.refused {
 		out.Unresolved = append(out.Unresolved, machineUnresolved{
 			Node: name, Problem: asked.refused[name]})