fix(trace): restore Phoenix collector compatibility

.github/workflows/build.yml

@@ -155,6 +155,9 @@ jobs:
           AZURE_API_BASE: https://example.openai.azure.com/
           PHOENIX_DISABLE_AUTO_INSTRUMENT: '1'
         run: python -c "import ${{ matrix.import }}"
+      - name: Test Phoenix collector against installed client
+        if: matrix.example == 'phoenix-auto-trace-openai'
+        run: python source/tests/test_phoenix_collector.py -v
       - name: Test Bank Manager model routing
         if: matrix.example == 'bank-manager-agent-control'
         working-directory: source
@@ -166,6 +169,45 @@ jobs:
         working-directory: source
         run: python -m unittest discover -s examples/science_research_agent/tests -p 'test_tools.py' -v
 
+  test-phoenix-versions:
+    name: "Phoenix collector: ${{ matrix.name }}"
+    needs: build
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: minimum supported
+            phoenix: '15.0.0'
+            phoenix_client: '2.1.0'
+          - name: maximum supported
+            phoenix: '19.17.0'
+            phoenix_client: ''
+    steps:
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      - uses: actions/checkout@v4
+        with:
+          path: source
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist
+      - name: Install Phoenix compatibility stack
+        shell: bash
+        run: |
+          python -m pip install --upgrade pip
+          WHEEL="$(ls dist/*.whl)[phoenix]"
+          PACKAGES=("$WHEEL" "arize-phoenix==${{ matrix.phoenix }}")
+          if [ -n "${{ matrix.phoenix_client }}" ]; then
+            PACKAGES+=("arize-phoenix-client==${{ matrix.phoenix_client }}")
+          fi
+          python -m pip install "${PACKAGES[@]}"
+          python -m pip check
+      - name: Run Phoenix collector compatibility tests
+        run: python source/tests/test_phoenix_collector.py -v
+
   test-foundry-host-install:
     name: "Example install: langgraph-foundry-hosted server"
     runs-on: ubuntu-latest

CHANGELOG.md

@@ -29,6 +29,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Restore `PhoenixCollector` compatibility with the supported Phoenix client API, including bounded turn-time queries and conversion of Phoenix DataFrame timestamps and indexed span IDs.
 - `assert-ai --version` now reads the installed distribution metadata instead of reporting a hard-coded stale version.
 - Declare `aiohttp`, which is directly used by the HTTP endpoint target, instead of relying on LiteLLM to install it transitively.
 - Keep Bank Manager's GPT and non-GPT Azure routes compatible with ASSERT's OpenAI dependency range, and verify its documented installation with `pip check`.