refactor: move pot hardware params and pid_type out of per-brew docs

Pot hardware constants (mass, material, L, Td) moved from sude/*.json
to config.json's Pot section; Sud/SudForecastEstimator accept pot_config
as baseline, per-brew pot sections may still override. Controller key
removed; pid_type moved into TempCtrl.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sude/sud_0010.json

@@ -2,10 +2,6 @@
 	"Name": "Sud-0010",
 	"Description": "Rotfraenkisch, Dunkles Lager",
 	"pot": {
-		"mass": 5.96,
-		"material": "Edelstahl 18/10",
-		"L": 0.2,
-		"Td": 17,
 		"grain_mass": 0,
 		"water_mass": 22,
 		"volumen": 30