fix(t-paliad-114): update EPA Beschwerdegebühr to 2.925€ (post 2024-04-01)

The Kostenrechner showed EUR 2.255 for the EPA appeal fee, a stale
pre-restructure figure. Per Rule 6 EPC-Gebühren (version 2024-04-01)
the standard appeal fee is EUR 2.925 — applies to any legal person not
under Rule 7a(2)(a-d). The reduced fee of EUR 2.015 for natural persons
/ SMEs / non-profits / academic institutions / public-research orgs is
documented in a code comment but not surfaced separately yet — m said
keep it simple; ship the standard fee only.

SMEFee aligned to the same 2925 since we're not exposing a tier toggle.
Updated TestComputeEPAInstance_SME accordingly.

Both /tools/kostenrechner and /tools/gebuehrentabellen read from the
same EPAFees map, so this single edit fixes both surfaces.

Picked up from fritz's worktree — fritz hit a Claude usage rate limit
mid-edit; head completed the same diff plus the test update.

internal/calc/fee_tables.go

@@ -309,12 +309,15 @@ var EPAFees = map[string]EPAFee{
 		Fee:     880,
 		SMEFee:  880,
 	},
+	// EPO appeal fee per Rule 6 EPC-Gebühren, version 2024-04-01. Standard fee
+	// only; reduced fee for natural persons / SMEs (Rule 7a(2)(a-d)) is 2.015€ —
+	// surface that separately if/when m signals.
 	"EPA_APPEAL": {
 		Key:     "EPA_APPEAL",
 		Label:   "Einspruchsbeschwerde",
 		LabelEN: "Appeal from Opposition",
-		Fee:     2255,
-		SMEFee:  1880,
+		Fee:     2925,
+		SMEFee:  2925,
 	},
 }
 

internal/calc/fees_test.go

@@ -178,8 +178,8 @@ func TestComputeEPAInstance_SME(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if result.Fee != 1880 {
-		t.Errorf("EPA Appeal SME Fee = %v, want 1880", result.Fee)
+	if result.Fee != 2925 {
+		t.Errorf("EPA Appeal SME Fee = %v, want 2925", result.Fee)
 	}
 }