Heal what is known, under a brake, and say every repair (hq to-be 45 Phase 3)

Research 031 counted the repairs people made by hand: a push to unstick a
plan waiting on a report, a controller restarted to make an object again, a
plan closed, a consumer re-made from now. Each was the ordinary path taken
again by someone who noticed. The healer registry makes each a registered
response to one condition kind, with a budget, a settle and its event:

- H1 sent-not-reported: ask the machine's node-engine to report again
  (mesh.node.<n>.ask.report); if it does not report what it was sent, send
  it again, never moving a build a policy or a plan holds back
- H2 stalled: close a plan whose wait is superseded or finished
- H3 holder-silent / consumer-lost: the send's own assertion of the bus's
  objects (issue 208's note)
- H4 consumer-behind: consumer-reset, only for a consumer the stream table
  marks resettable (the controller's own events consumer)
- H5 is the identity provider's own repair (ADR 0224 §5), registered only

Success is the observation clearing the condition, never the healer; a spent
budget hands the condition to the operator, urgent, with what was tried, and
no healer touches it again. Every act is begun in the store before it is made
(migration 0070), kept in the condition's tried as "healer Hn" and said as
the seat event healer-acted; a heal is never a hand act. More than twelve acts
in an hour stop every healer until an hour after the last, said urgently.
Only the lease holder heals.

S15 is live: a cause repaired by hand twice in a fortnight raises
healer-wanted, naming the healer that was not enough where one exists. D6's
far-behind finding has its own kind, consumer-behind. Nodes are granted the
question; the controller's grant gains healer-acted (genesis lock in
mesh-host). `healers` lists the registry, the acts and the brake; status
counts the week's heals.

internal/conditions/condition.go

@@ -79,13 +79,21 @@ type Evidence struct {
 	Said string    `json:"said"`
 }
 
-// Attempt is one healer's try at a condition (to-be 45 §7; written from Phase 3).
+// Attempt is one healer's try at a condition (to-be 45 §7): when, what it did, what came of it, and
+// which healer — so a person reading `conditions show` sees the mesh repairing itself, by whom.
 type Attempt struct {
 	At      time.Time `json:"at"`
 	What    string    `json:"what"`
 	Outcome string    `json:"outcome"`
+	// By is the healer, as a person reads it: `healer H1`. Never a person: an act by hand is the
+	// hand-act log's, not a condition's attempt.
+	By string `json:"by"`
 }
 
+// KeptAttempts is how many attempts a condition keeps, newest last: a healer's budget is a few, and
+// a condition reopened again and again carries its tries forward only so far.
+const KeptAttempts = 10
+
 // Silence is a person saying they know: no messages until it ends (to-be 45 §2). Recorded as a hand
 // act; the condition stays open, and `status` still says it.
 type Silence struct {
@@ -139,6 +147,11 @@ func (c Condition) SilencedAt(now time.Time) bool {
 	return c.Silenced != nil && now.Before(c.Silenced.Until)
 }
 
+// Escalated says a healer tried and its budget is spent: the operator resolves it now (to-be 45 §2,
+// "budget spent ──► OPEN, resolver: operator, severity: urgent"). An observation does not lower its
+// severity again: the watchdog that sees it every half minute would otherwise undo the escalation.
+func (c Condition) Escalated() bool { return c.Resolver == ResolverOperator && len(c.Tried) > 0 }
+
 // Show is the verb that shows more about a condition, as a message carries it.
 func (c Condition) Show() string { return "mesh-controller.conditions key=" + c.Key }