feat(infra): schedule daily model profile refresh with job summary (#35354)

- Schedules the `refresh_model_profiles` workflow to run daily at 08:00
UTC (manual trigger available).
- Adds a job summary step that reports whether a PR was created/updated
or skipped because profiles were already up to date.
- Each run supersedes any stale PR from a previous run since the action
force-pushes to a fixed branch (`bot/refresh-model-profiles`).

.github/workflows/refresh_model_profiles.yml

@@ -1,11 +1,15 @@
 # Refreshes model profile data for all in-monorepo partner integrations by
 # pulling the latest metadata from models.dev via the `langchain-profiles` CLI.
 #
-# Creates a pull request with any changes. Triggered manually from the Actions UI.
+# Creates a pull request with any changes. Runs daily and can be triggered
+# manually from the Actions UI. Uses a fixed branch so each run supersedes
+# any stale PR from a previous run.
 
 name: "🔄 Refresh Model Profiles"
 
 on:
+  schedule:
+    - cron: "0 8 * * *" # daily at 08:00 UTC
   workflow_dispatch:
 
 permissions:
@@ -63,7 +67,8 @@ jobs:
           private-key: ${{ secrets.MODEL_PROFILE_BOT_PRIVATE_KEY }}
 
       - name: "🔀 Create pull request"
-        uses: peter-evans/create-pull-request@v7
+        id: create-pr
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ steps.app-token.outputs.token }}
           branch: bot/refresh-model-profiles
@@ -74,4 +79,15 @@ jobs:
             integrations via `langchain-profiles refresh`.
 
             🤖 Generated by the `refresh_model_profiles` workflow.
+          labels: bot
           add-paths: libs/partners/**/data/_profiles.py
+
+      - name: "📝 Summary"
+        run: |
+          op="${{ steps.create-pr.outputs.pull-request-operation }}"
+          url="${{ steps.create-pr.outputs.pull-request-url }}"
+          if [ "$op" = "created" ] || [ "$op" = "updated" ]; then
+            echo "### ✅ PR ${op}: ${url}" >> "$GITHUB_STEP_SUMMARY"
+          else
+            echo "### ⏭️ Skipped: profiles already up to date" >> "$GITHUB_STEP_SUMMARY"
+          fi

libs/core/tests/unit_tests/utils/test_uuid_utils.py

@@ -26,29 +26,12 @@ def test_uuid7() -> None:
     assert out1_ms == ms
 
 
-def _uuid_v7_sortable_prefix(uuid_obj: UUID) -> int:
-    """Extract the timestamp + counter bits (top 96 bits minus version/variant)."""
-    val = uuid_obj.int
-    timestamp_ms = (val >> 80) & 0xFFFFFFFFFFFF
-    counter_hi = (val >> 64) & 0x0FFF
-    counter_lo = (val >> 32) & 0x3FFFFFFF
-    return (timestamp_ms << 42) | (counter_hi << 30) | counter_lo
-
-
 def test_monotonicity() -> None:
-    """Test that UUIDs are monotonically increasing.
-
-    UUIDv7 guarantees monotonicity of the timestamp+counter portion,
-    but the trailing 32-bit random field can cause raw string or int
-    comparisons to appear non-monotonic. Compare only the sortable prefix.
-    """
-    last_prefix = -1
-    last_uuid = None
+    """Test that UUIDs are monotonically increasing."""
+    last = ""
     for n in range(100_000):
-        u = uuid7()
-        prefix = _uuid_v7_sortable_prefix(u)
-        if n > 0 and prefix < last_prefix:
-            msg = f"UUIDs are not monotonic: {last_uuid} versus {u}"
+        i = str(uuid7())
+        if n > 0 and i <= last:
+            msg = f"UUIDs are not monotonic: {last} versus {i}"
             raise RuntimeError(msg)
-        last_prefix = prefix
-        last_uuid = u
+        last = i