feat(boss): Chief of Staff Boss + spun-crow registry with cap (#42)

ledger.go

@@ -153,6 +153,20 @@ func (l *Ledger) Judge(crows []string, taskType string, ok bool, promoteAfter in
 	return changes
 }
 
+// SetStart gives a new crow its starting trust record, used when the Boss
+// spins up a crow. It never raises a level above the record's own; and the
+// Boss path only ever passes Stranger or Regular (earned trust can't be
+// minted). Saves through the real path so a restart keeps the record.
+func (l *Ledger) SetStart(crow, taskType string, level int) error {
+	l.mu.Lock()
+	r := get(l.Crows, crow+"|"+taskType)
+	if level > r.Level {
+		r.Level = level
+	}
+	l.mu.Unlock()
+	return l.Save()
+}
+
 // MarshalSnapshot returns the ledger as JSON, safe to call while lists are flying.
 func (l *Ledger) MarshalSnapshot() ([]byte, error) {
 	l.mu.Lock()