Merge pull request 'A module's state on the bus: buckets from the catalogue, grants, membership (hq ADR 0201)' (#257) from feat/module-state-on-the-bus into main

internal/catalogue/manifest.go

@@ -325,6 +325,15 @@ type Manifest struct {
 	// person's account (design 25 §7) already had the same shape.
 	Invokes []string `json:"invokes,omitempty"`
 
+	// State is the current state this module keeps on the bus, by local name: each a key-value
+	// bucket the controller creates, which every instance of the module writes and reads
+	// (novox/hq ADR 0201). Not history — that is an event — and never a secret, sealed or not.
+	State []StateDeclaration `json:"state,omitempty"`
+
+	// Reads are other modules' state this module reads and watches, each `<module>.<name>`
+	// (novox/hq ADR 0201). Read-only: only the owner's instances write.
+	Reads []string `json:"reads,omitempty"`
+
 	// Capabilities the machine must have. A different field from Requires because the remedy
 	// differs: a missing module can be assigned, and a missing capability means the wrong
 	// machine.
@@ -1316,6 +1325,8 @@ func ParseManifest(raw []byte) (Manifest, error) {
 	// module whose event names are wrong installs, starts, connects and reacts to nothing, with
 	// every log line saying it is fine (novox/hq 04-ISSUES/127).
 	problems = append(problems, EventProblems(m)...)
+	// And what it may call its state, and whose it may read (state.go, novox/hq ADR 0201).
+	problems = append(problems, StateProblems(m)...)
 	wellFormed := true
 	for _, c := range m.Claims {
 		if !name.MatchString(c.Name) {