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* fix(kiro): route Amazon Q runtime by profileArn region for cross-region IdC Enterprise AWS IAM Identity Center accounts whose IdC instance lives outside the two Amazon Q Developer profile regions (us-east-1 / eu-central-1) - e.g. eu-north-1 (Stockholm), start URL https://d-XXXX.awsapps.com/start - showed no limits and returned 502 on every request. Root cause: the backend used the IdC/OIDC token region (providerSpecificData.region, e.g. eu-north-1) for every CodeWhisperer runtime call, hitting q.eu-north-1.amazonaws.com - a host that does not exist as a Q Developer runtime endpoint. Per AWS docs ("Supported Regions for the Q Developer console and Q Developer profile"), the Q Developer *profile* (which produces the profileArn and hosts generateAssistantResponse / GetUsageLimits / ListAvailableModels / ListAvailableProfiles) is only hosted in us-east-1 and eu-central-1, regardless of the IdC region; "data is stored in the Region where you create the Amazon Q Developer profile." Fix (new open-sse/services/kiroRegion.ts) decouples the two regions: - providerSpecificData.region stays the IdC/OIDC region, used ONLY for oidc.{region}.amazonaws.com token mint/refresh. - The runtime region is derived from the profileArn (resolveKiroRuntimeRegion): profileArn region -> a valid stored profile region -> us-east-1. A stored IdC region that is not a Q profile region (eu-north-1) is ignored for runtime. - Profile discovery (discoverKiroProfileArnAcrossRegions) probes the Q profile regions (EU IdC -> eu-central-1 first) with the cross-region SSO token instead of q.{idcRegion}. Wired into: executors/kiro.ts (generateAssistantResponse targets the profile region), services/usage/kiro.ts (getKiroUsage multi-region discovery + profileArn runtime region so Limits resolves), services/kiroModels.ts (ListAvailableModels), and src/lib/oauth/providers/kiro.ts (login-time postExchange profile discovery). Adds tests/unit/kiro-idc-cross-region.test.ts (15 cases). All Kiro suites pass (60 tests). * fix(kiro): probe the IdC region too during profileArn discovery (any IdC region) Make profile discovery general for an IdC in ANY of the ~30 IdC-supported AWS regions (us-west-2, ap-southeast-2, me-central-1, af-south-1, ...), not just eu-north-1. buildKiroProfileDiscoveryRegions now probes the two documented Q Developer profile regions FIRST (us-east-1 / eu-central-1, EU-first for EMEA IdC regions to cut latency), then appends the IdC/stored region itself as a forward-compatible fallback: if AWS ever co-locates the profile with the IdC or expands the profile-region list, a same-region probe still finds it. Probing a region with no profile simply returns nothing and we fall through. The profileArn's own region remains authoritative for every runtime call (resolveKiroRuntimeRegion), so a newly-issued ARN in any region is honored automatically. Adds ap-southeast-2 (APAC) cross-region coverage and updates the discovery-order tests. --------- Co-authored-by: artickc <artur1992123@mail.ru>