style: gofmt normalization — no logic changes

gofmt -w across the controller tree (46 files) so gofmt -l is empty — disarms the
formatting landmine where a targeted edit + accidental gofmt -w swept ~46 unrelated
files. Pure formatting: whitespace + gofmt's optional-semicolon removal in reflowed
inline closures. One doc comment reworded ('' -> 'the empty string') to avoid gofmt's
Go-1.19 doc-comment typographic substitition ('' -> curly quote) muddying its meaning.
No build/vet/test behavior change.

controller/internal/appexport/crypto.go

@@ -15,8 +15,8 @@ import (
 )
 
 const (
-	magicHeader = "FABE"   // Felhom App Bundle Encrypted
-	scryptN     = 1 << 15  // 32768
+	magicHeader = "FABE"  // Felhom App Bundle Encrypted
+	scryptN     = 1 << 15 // 32768
 	scryptR     = 8
 	scryptP     = 1
 	saltSize    = 32