[aw] Java Codegen Agentic Fix reported incomplete result

### Workflow Failure

**Workflow:** [Java Codegen Agentic Fix](https://github.com/github/copilot-sdk/blob/main/.github/workflows/java-codegen-fix.md)
**Branch:** main
**Run:** https://github.com/github/copilot-sdk/actions/runs/34369101014

> [!WARNING]
> **Task Could Not Be Completed**: The agent reported that the task could not be performed due to an infrastructure or tool failure.

**Reasons:**
- Sandbox firewall blocks registry.npmjs.org and repo.maven.apache.org, preventing npm install/schema fetch/codegen regeneration and Maven dependency resolution (central-publishing-maven-plugin). Could not diagnose or validate any fix for PR #2590.

Attempted to fix Java codegen/build failures on branch sdk/typed-structured-output for PR #2590, but the sandbox's network firewall blocks the required package registries entirely, preventing any diagnosis or fix from being validated:

1. `npm ci` in java/scripts/codegen fails with 403 Forbidden fetching tsx/json-schema/esbuild tarballs from registry.npmjs.org (Squid proxy denies the CONNECT tunnel with ERR_ACCESS_DENIED). This blocks running `npm run fetch:schemas` and `npm run generate`, so I cannot regenerate java/sdk/src/generated/java from the new schemas at all.
2. `mvn verify` (even after switching JAVA_HOME to the available Temurin 25 JDK, which resolves the JDK-version enforcer failure from the original CI log) fails during project initialization: it cannot resolve `org.sonatype.central:central-publishing-maven-plugin:0.11.0` because repo.maven.apache.org is also blocked by the firewall (CONNECT tunnel 403).
3. The only allowed domains in this sandbox's firewall policy are GitHub-related domains (github.com, githubusercontent.com, github-cloud.s3.amazonaws.com, etc.), json-schema.org/schemastore.org, OS package mirrors, and CRL/OCSP endpoints — registry.npmjs.org and repo.maven.apache.org are not in the allowlist.
4. Additionally, ~/.m2 is owned by root so a repository directory can't even be created there by the runner user (worked around by pointing -Dmaven.repo.local elsewhere, but the plugin resolution over the network is the blocking issue).

No code changes were made since I could not validate any fix (mvn verify never got past the dependency-resolution phase, and codegen dependencies could not be installed). The JDK version issue from the original failure log is resolved simply by using JDK 25 (available at /usr/lib/jvm/temurin-25-jdk-amd64) instead of JDK 17 in the build environment — that part is an environment/CI configuration matter, not a code fix. Manual intervention is needed either to run this job with network access to registry.npmjs.org and repo.maven.apache.org allowlisted, or to run it in an environment with those Maven/npm dependencies pre-cached.

This is a structured incompletion signal (`report_incomplete`), not a real task outcome. Any other safe outputs emitted alongside this signal (e.g., comments) describe the failure state, not a completed review or action.

### Action Required

**Assign this issue to an agent** to debug and fix the issue.

Debug with any coding agent

Use this prompt with any coding agent (GitHub Copilot, Claude, Gemini, etc.):

````
Debug the agentic workflow failure using https://raw.githubusercontent.com/github/gh-aw/main/debug.md

The failed workflow run is at https://github.com/github/copilot-sdk/actions/runs/34369101014
````

Manually invoke the agent

Debug this workflow failure using your favorite Agent CLI and the `agentic-workflows` prompt.

- Start your agent
- Load the `agentic-workflows` skill from `.github/skills/agentic-workflows/SKILL.md` or
- Type `debug the agentic workflow java-codegen-fix failure in https://github.com/github/copilot-sdk/actions/runs/34369101014`

> [!TIP]
>
> Stop reporting this workflow as a failure
>
> To stop a workflow from creating failure issues, set `report-failure-as-issue: false` in its frontmatter:
> ```yaml
> safe-outputs:
> report-failure-as-issue: false
> ```
>
>

> Generated from [Java Codegen Agentic Fix](https://github.com/github/copilot-sdk/actions/runs/34369101014) · copilot · 63.8 AIC · [◷](https://github.com/search?q=repo%3Agithub%2Fcopilot-sdk+is%3Aissue+%22gh-aw-workflow-id%3A+java-codegen-fix%22&type=issues)

Start with .github/workflows/java-codegen-fix.md and the Java codegen entry points under java/scripts/codegen. Reproduce the failed run, checking npm dependency and schema generation steps before Maven verification; done means the workflow can regenerate java/sdk/src/generated/java and complete validation without the reported infrastructure failures.

Rédigé par le modèle d'indexation à partir du texte de l'issue.