chore(release): upload hosted benchmark recordings from qualification lanes

A hosted lane seeds its VM timing ratchet until hosted evidence is
checked in, and until now nothing carried a hosted recording off the
runner: the only hosted fork numbers available were the rounded values
pytest printed on failure. Upload cache/target/tests/benchmarks/ from the
binary and profile qualification jobs, pass or fail, so the first hosted
baseline can be reviewed and checked in from a real document.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: ebursztein

.github/workflows/release-assets.yaml

@@ -432,6 +432,18 @@ jobs:
           "$PWD"
           "$ACTIVATION_READY"
 
+      # Hosted timing evidence. A hosted lane seeds its VM timing ratchet until
+      # a hosted recording is checked in as reviewed evidence; this is
+      # where that recording comes from, pass or fail.
+      - name: Upload hosted benchmark recordings
+        if: ${{ !cancelled() }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a
+        with:
+          name: hosted-benchmarks-profile-${{ inputs.profile }}-${{ github.run_attempt }}
+          path: cache/target/tests/benchmarks/
+          retention-days: 30
+          if-no-files-found: ignore
+
       - name: Record deferred profile staging boundary
         if: ${{ needs.author-profile-release.outputs.activation_ready != 'true' }}
         env:

.github/workflows/release.yaml

@@ -1028,6 +1028,18 @@ jobs:
       - name: Qualify the candidate binaries
         run: just qualify-binaries "$PWD"
 
+      # Hosted timing evidence. A hosted lane seeds its VM timing ratchet until
+      # a hosted recording is checked in as reviewed evidence; this is
+      # where that recording comes from, pass or fail.
+      - name: Upload hosted benchmark recordings
+        if: ${{ !cancelled() }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a
+        with:
+          name: hosted-benchmarks-binary-${{ github.run_attempt }}
+          path: cache/target/tests/benchmarks/
+          retention-days: 30
+          if-no-files-found: ignore
+
       # This gate blocks publication, so a failure here has to be diagnosable
       # from outside the runner. Without the session logs a Linux-only failure
       # is invisible to a macOS developer, which is exactly how