fix(aws/recommendations): map the Europe (...) region display names

CHANGELOG.md

@@ -216,6 +216,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/).
 ### Fixed
 
 - **AWS/OpenSearch:** the STS account-ID lookup used for post-purchase tagging caches only a successful result, so one throttled or timed-out `GetCallerIdentity` no longer disables tagging for the client's lifetime (#53).
+- **AWS/recommendations:** `normalizeRegionName` maps the current `Europe (Ireland|Frankfurt|London|Paris|Stockholm)` Cost Explorer display names to region codes, so coverage lookups keyed by region code match those recommendations (#53).
 - **AWS/RDS:** `PurchaseCommitment` refuses an offering whose upfront (`FixedPrice` x count) exceeds the approved recommendation upfront by more than 5%, or that is priced in a non-USD currency; a zero approved upfront is not checked (#53).
 - Bump Go to 1.26.10 to pick up the fix for GO-2026-6809 (crypto/x509), which `govulncheck` now reports against 1.26.9.
 - **AWS/MemoryDB, OpenSearch, Redshift:** `PurchaseCommitment` refuses an offering whose upfront (`FixedPrice` x count) exceeds the approved recommendation upfront by more than 5%, or that is priced in a non-USD currency (MemoryDB offerings carry no currency, so only the recommendation's currency is checked there), or, for MemoryDB, an upfront offering with a zero price or one bought in a China region (cn-north-1, cn-northwest-1), where the assumed USD price is wrong; a zero approved upfront is not checked. All AWS RI price guards (EC2, RDS, MemoryDB, OpenSearch, Redshift) also refuse a NaN or infinite approved upfront (#53).

providers/aws/recommendations/converters.go

@@ -120,6 +120,11 @@ func normalizeRegionName(region string) string {
 		"Asia Pacific (Hong Kong)":  "ap-east-1",
 		"Asia Pacific (Osaka)":      "ap-northeast-3",
 		"Asia Pacific (Jakarta)":    "ap-southeast-3",
+		"Europe (Ireland)":          "eu-west-1",
+		"Europe (Frankfurt)":        "eu-central-1",
+		"Europe (London)":           "eu-west-2",
+		"Europe (Paris)":            "eu-west-3",
+		"Europe (Stockholm)":        "eu-north-1",
 		"Europe (Milan)":            "eu-south-1",
 		"Middle East (UAE)":         "me-central-1",
 		"Asia Pacific (Hyderabad)":  "ap-south-2",

providers/aws/recommendations/converters_test.go

@@ -553,6 +553,11 @@ func TestNormalizeRegionName(t *testing.T) {
 			region:   "il-central-1",
 			expected: "il-central-1",
 		},
+		{name: "Europe (Ireland)", region: "Europe (Ireland)", expected: "eu-west-1"},
+		{name: "Europe (Frankfurt)", region: "Europe (Frankfurt)", expected: "eu-central-1"},
+		{name: "Europe (London)", region: "Europe (London)", expected: "eu-west-2"},
+		{name: "Europe (Paris)", region: "Europe (Paris)", expected: "eu-west-3"},
+		{name: "Europe (Stockholm)", region: "Europe (Stockholm)", expected: "eu-north-1"},
 		{
 			name:     "Unknown region returns as-is",
 			region:   "Unknown Region",