fix: regenerate Alby Hub v1.23.0 patches against exact upstream source

Patch 1 (0001-private-route-hints.patch):
- Add missing RouteHints: hints, context line (v1.23.0 added this field
  between Expiry and Private; old patch lacked it, causing hunk failure)
- Fix amountMsat parameter name in hunk header (was 'amount' from older version)
- Only regular invoice Private field is changed; MakeHoldInvoice keeps
  Private: !hasPublicChannels unchanged

Patch 2 (0002-isolated-invoice-app-id.patch):
- Fix CreateInvoice interface: amountMsat uint64 (not amount uint64)
- Fix MakeInvoiceRequest: Amount/AmountSat/AmountMsat are *uint64 pointers
  (not Amount uint64) matching v1.23.0 struct layout
- Fix MakeInvoice call: 9 args → 10 args with appId as 8th positional arg
  (nil, nil trailing) matching v1.23.0 signature
- Fix function impl parameter: amountMsat uint64 throughout

Both patches dry-run verified against exact v1.23.0 source and apply cleanly
in sequence. Updated NixPatchContractTests to assert v1.23.0 context
(RouteHints, amountMsat, *uint64 pointer types, 10-arg MakeInvoice call).

All 233 Python tests pass. JS syntax checks pass.

packages/albyhub/0001-private-route-hints.patch

@@ -1,12 +1,11 @@
 diff --git a/lnclient/lnd/lnd.go b/lnclient/lnd/lnd.go
-index 35c2e40..f6f4996 100644
+index bad532f..ba35b7b 100644
 --- a/lnclient/lnd/lnd.go
 +++ b/lnclient/lnd/lnd.go
-@@ -373,7 +373,7 @@ func (svc *LNDService) MakeInvoice(ctx context.Context, amount int64, descripti
- 		ValueMsat:       amount,
- 		Memo:            description,
+@@ -708,7 +708,7 @@ func (svc *LNDService) MakeInvoice(ctx context.Context, amountMsat int64, descri
  		DescriptionHash: descriptionHashBytes,
  		Expiry:          expiry,
+ 		RouteHints:      hints,
 -		Private:         !hasPublicChannels, // use private channel hints in the invoice
 +		Private:         true, // always include private channel hints in the invoice
  	}