Standardize generate.sh: dotnet tool install + curl --fail

Simplify tool install to just `dotnet tool install --global` (works
whether already installed or not). Add --fail --silent --show-error
to curl invocations so the script aborts on HTTP errors.

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

Author: HavenDV

src/libs/DeepL/generate.sh

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-dotnet tool update --global autosdk.cli --prerelease || dotnet tool install --global autosdk.cli --prerelease
+dotnet tool install --global autosdk.cli --prerelease
 rm -rf Generated
-curl -o openapi.yaml https://raw.githubusercontent.com/DeepLcom/openapi/main/openapi.yaml
+curl --fail --silent --show-error -o openapi.yaml https://raw.githubusercontent.com/DeepLcom/openapi/main/openapi.yaml
 
 # Fix auth: convert apiKey → http/bearer for AutoSDK constructor generation
 yq -i '