ci: wire lib/sdk/server-ai into release and publish workflows (#201)

## Summary

Wires `lib/sdk/server-ai` into the repo's release and publish plumbing.
Release-please already tracks the module
(`release-please-config.json` + `.release-please-manifest.json` at
`0.2.0`) and has cut `launchdarkly-java-server-sdk-ai-0.1.0`
and `-0.2.0` tags and GitHub Releases — but nothing was listening for
the baton afterward, so `.github/actions/full-release`
(Publish → Publish Docs) has never run for the module.

Consequences today:

- `com.launchdarkly:launchdarkly-java-server-sdk-ai` has **zero versions
on Maven Central**, despite the module README
  advertising the coordinate as published.
- `https://launchdarkly.github.io/java-core/lib/sdk/server-ai/` returns
**404**; `gh-pages` contains
`lib/sdk/server`, `lib/shared/*`, `lib/java-server-sdk-otel`, and
`lib/java-server-sdk-redis-store` but no `server-ai`.
- There was no manual escape hatch either — the module was missing from
both `workflow_dispatch` choice lists.

This is config-only. No build or source changes are needed:
`lib/sdk/server-ai/build.gradle` already applies
`maven-publish`, `signing`, and `nexusPublishing`, sets
`archivesBaseName = 'launchdarkly-java-server-sdk-ai'`, declares
full POM metadata, and produces `withJavadocJar()` / `withSourcesJar()`
(both excluding
`com.launchdarkly.sdk.server.ai.internal`).

## What changed

`.github/workflows/release-please.yml`:

- New job output `package-server-sdk-ai-released` from
`steps.release.outputs['lib/sdk/server-ai--release_created']`.
- New `release-server-sdk-ai` job, identical in shape to the existing
per-module release jobs, gated on that output and
calling `./.github/actions/full-release` with `workspace_path:
lib/sdk/server-ai`, `dry_run: false`, `prerelease: false`.

`.github/workflows/manual-publish.yml` and
`.github/workflows/manual-publish-docs.yml`:

- Added `lib/sdk/server-ai` to the `workspace_path` choice lists so the
module can be published — and, importantly, so its
  Javadoc can be pushed to `gh-pages` — on demand.

## Follow-up (not in this PR)

1. **Backfill the Javadoc site immediately** after merge: dispatch
**Publish Docs** with `workspace_path: lib/sdk/server-ai`,
`dry_run: false`. `publish-pages` writes to `output_path:
lib/sdk/server-ai`, and `gh-pages` docs are overwritten in place
rather than versioned, so this is safe to run from `main` and makes the
GitHub Pages URL work without publishing a jar.
2. **First Central release should be a fresh version, not a back-publish
of `0.2.0`.** `main` carries unreleased changes on
top of the `0.2.0` tag — including a breaking one (#199, `fix!: Make
AgentGraph traversal topological`) — while
`gradle.properties` still reads `version=0.2.0`. Merging this PR and
letting the open release-please PR cut the next
   version gets the artifact published from a matching tree.
3. **Docs links** become referenceable once released:
`https://launchdarkly.github.io/java-core/lib/sdk/server-ai/` (Javadoc,
the analogue of the .NET
   `launchdarkly.github.io/dotnet-core/pkgs/sdk/server-ai/` page) and

`https://central.sonatype.com/artifact/com.launchdarkly/launchdarkly-java-server-sdk-ai`
(package page, the analogue of
   the NuGet listing).

## Verification

- [ ] `release-please` workflow parses and the new job appears in the
run graph (skipped when no server-ai release is cut).
- [ ] **Publish Docs** dispatch offers `lib/sdk/server-ai` and, after
running, `gh-pages` contains
`lib/sdk/server-ai/index.html` and the Pages URL renders the
`LDAIClient` Javadoc.
- [ ] After the next release,
`https://repo1.maven.org/maven2/com/launchdarkly/launchdarkly-java-server-sdk-ai/maven-metadata.xml`
lists the version (allow ~30 min for Central sync) and a scratch Gradle
project resolves the coordinate.
- [ ] Published sources/javadoc jars exclude
`com.launchdarkly.sdk.server.ai.internal` — the build already enforces
this, but
it's worth confirming on the first artifacts ever produced for real.

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Author: mattrmc1

.github/workflows/manual-publish-docs.yml

@@ -10,6 +10,7 @@ on:
           - lib/shared/internal
           - lib/shared/test-helpers
           - lib/sdk/server
+          - lib/sdk/server-ai
           - lib/java-server-sdk-otel
           - lib/java-server-sdk-redis-store
       dry_run:

.github/workflows/manual-publish.yml

@@ -11,6 +11,7 @@ on:
           - lib/shared/internal
           - lib/shared/test-helpers
           - lib/sdk/server
+          - lib/sdk/server-ai
           - lib/java-server-sdk-otel
           - lib/java-server-sdk-redis-store
       prerelease:

.github/workflows/release-please.yml

@@ -17,6 +17,7 @@ jobs:
       package-sdk-internal-released: ${{ steps.release.outputs['lib/shared/internal--release_created'] }}
       package-test-helpers-released: ${{ steps.release.outputs['lib/shared/test-helpers--release_created'] }}
       package-server-sdk-released: ${{ steps.release.outputs['lib/sdk/server--release_created'] }}
+      package-server-sdk-ai-released: ${{ steps.release.outputs['lib/sdk/server-ai--release_created'] }}
       package-server-sdk-otel-released: ${{ steps.release.outputs['lib/java-server-sdk-otel--release_created'] }}
       package-server-sdk-redis-store-released: ${{ steps.release.outputs['lib/java-server-sdk-redis-store--release_created'] }}
 
@@ -60,6 +61,39 @@ jobs:
           aws_role: ${{ vars.AWS_ROLE_ARN }}
           token: ${{ secrets.GITHUB_TOKEN }}
 
+  release-server-sdk-ai:
+    runs-on: ubuntu-latest
+    needs: release-please
+    permissions:
+      id-token: write
+      contents: write
+      pull-requests: write
+    if: ${{ needs.release-please.outputs.package-server-sdk-ai-released == 'true'}}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.1.0
+        name: Get secrets
+        with:
+          aws_assume_role: ${{ vars.AWS_ROLE_ARN }}
+          ssm_parameter_pairs: '/production/common/releasing/sonatype/central/username = SONATYPE_USER_NAME,
+          /production/common/releasing/sonatype/central/password = SONATYPE_PASSWORD,
+          /production/common/releasing/java/keyId = SIGNING_KEY_ID'
+          s3_path_pairs: 'launchdarkly-releaser/java/code-signing-keyring.gpg = code-signing-keyring.gpg'
+
+      - uses: ./.github/actions/full-release
+        with:
+          workspace_path: lib/sdk/server-ai
+          dry_run: false
+          prerelease: false
+          code_signing_keyring: ${{ github.workspace }}/code-signing-keyring.gpg
+          signing_key_id: ${{ env.SIGNING_KEY_ID }}
+          signing_key_passphrase: ''
+          sonatype_username: ${{ env.SONATYPE_USER_NAME }}
+          sonatype_password: ${{ env.SONATYPE_PASSWORD }}
+          aws_role: ${{ vars.AWS_ROLE_ARN }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+
   release-server-sdk-otel:
     runs-on: ubuntu-latest
     needs: release-please