Enable Ollama integration tests in CI and rename report to Integration Test Report

- Install Ollama, cache models (qwen2.5:0.5b + nomic-embed-text), and start
  server in the Misc integration job for both workflow files
- Set OLLAMA_MODEL and OLLAMA_EMBEDDING_MODEL env vars so the 5 Ollama tests
  are no longer skipped
- Rename Flaky Test Report to Integration Test Report throughout (job names,
  artifact names, cache keys, file names, script titles/docstrings)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

python/scripts/flaky_report/__init__.py

@@ -1,6 +1,6 @@
 # Copyright (c) Microsoft. All rights reserved.
 
-"""Flaky test report aggregation and trend generation.
+"""Integration test report aggregation and trend generation.
 
 Parses JUnit XML (``pytest.xml``) files produced by each CI job, merges
 them with historical data, and generates a markdown trend report showing

python/scripts/flaky_report/__main__.py

@@ -1,15 +1,15 @@
 # Copyright (c) Microsoft. All rights reserved.
 
-"""CLI entry point for the flaky test report tool.
+"""CLI entry point for the integration test report tool.
 
 Usage:
     uv run python -m scripts.flaky_report <reports-dir> <history-file> <output-file>
 
 Example (from python/ directory):
     uv run python -m scripts.flaky_report \\
-        ../flaky-reports/ \\
-        flaky-report-history.json \\
-        flaky-test-report.md
+        ../test-results/ \\
+        integration-report-history.json \\
+        integration-test-report.md
 """
 
 import sys

python/scripts/flaky_report/aggregate.py

@@ -247,7 +247,7 @@ def _short_name(nodeid: str) -> str:
 def generate_trend_report(runs: list[dict[str, Any]]) -> str:
     """Generate a markdown trend report from run history."""
     lines = [
-        "# 🔬 Flaky Test Report",
+        "# 🔬 Integration Test Report",
         "",
         f"*Generated: {datetime.now(timezone.utc).strftime('%Y-%m-%d %H:%M UTC')}*",
         "",