fix: seed-k8s.sh broken by EDC 0.15.1 key generation API change

[Copilot]

EDC 0.15.1 requires an explicit curve parameter when generating EC/EdDSA keys. seed-k8s.sh omitted it, causing a NullPointerException: The curve must not be null on participant context creation — leaving DID documents unpublished and all DID resolution returning HTTP 204, which cascades into complete E2E test failure.

Changes

• seed-k8s.sh — consumer participant: Add "curve": "P-256" to EC keyGeneratorParams

 "keyGeneratorParams": {
-  "algorithm": "EC"
+  "algorithm": "EC",
+  "curve": "P-256"
 }

• seed-k8s.sh — consumer STS secret: Capture clientSecret from the participant context creation response and store it in the consumer connector's vault under did:web:consumer-identityhub%3A7083:consumer-sts-client-secret — required for the connector to authenticate with the STS token endpoint (EDC_IAM_STS_OAUTH_CLIENT_SECRET_ALIAS)

Outstanding

The following identical fixes still need to be applied:

• Provider participant: "curve": "P-256" + clientSecret vault storage
• Issuer participant: "curve": "Ed25519" for EdDSA + missing x-api-key header on its curl call

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• central.sonatype.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens=java.xml/javax.xml.namespace=ALL-UNNAMED --add-opens=java.base/java.time=ALL-UNNAMED -XX:MaxMetaspaceSize=384m -XX:+HeapDumpOnOutOfMemoryError -Xms256m -Xmx512m -Dfile.encoding=UTF-8 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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