phase 0.7: parallel kotlin-test CI job

runs gradle test build on the kotlin/ module on every push, in parallel
with the python matrix. catches schema drift between Python wire format
and Kotlin deserialization, plus any Kotlin compile regressions before
they reach Loki integration.

also pre-add [crypto] to the python install step (used by phase 1.0a
signing tests landing later this batch — keeps CI install cmd stable).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Zawwarsami16

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Install
         run: |
           python -m pip install --upgrade pip
-          pip install -e '.[server,dev]'
+          pip install -e '.[server,dev,crypto]'
 
       - name: Lint (warnings only)
         continue-on-error: true
@@ -37,3 +37,24 @@ jobs:
       - name: Test
         run: |
           pytest -v
+
+  kotlin-test:
+    name: Kotlin module test
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '17'
+
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v3
+
+      - name: Build + test kotlin module
+        working-directory: kotlin
+        run: |
+          gradle test build --no-daemon --stacktrace