chore(ci): run the dependency check daily instead of weekly

.github/scripts/report-scheduled-failure.sh

@@ -8,7 +8,7 @@ TITLE="Scheduled dependency check failed"
 # updates color/description without error if present.
 gh label create "$LABEL" \
   --color "FBCA04" \
-  --description "Weekly dependency check failures" \
+  --description "Scheduled dependency check failures" \
   --force
 
 # Find an open issue with our label, if any. --jq '.[0].number // empty'
@@ -17,7 +17,7 @@ existing=$(gh issue list --label "$LABEL" --state open --json number --jq '.[0].
 
 if [ -z "$existing" ]; then
   body=$(printf '%s\n\n%s\n\n%s\n\n%s\n\n%s' \
-    "The weekly scheduled dependency check failed." \
+    "The scheduled dependency check failed." \
     "First failing run: ${RUN_URL}" \
     "Likely cause, if a lint or pytest job failed: a dev or lint dependency (ruff, ty, eof-fixer, pytest, typing-extensions) released a breaking change. Reproduce locally with \`just install\` then \`just lint\` and \`just test\`." \
     "Likely cause, if a lowest-direct job failed: a declared floor in \`pyproject.toml\` no longer installs or bootstraps, usually because an upstream package changed metadata under it. Reproduce with \`uv pip install --resolution lowest-direct '.[<extras>]'\` then \`python scripts/floor_smoke.py <target>\`, reading both off the failing job's matrix." \

.github/workflows/scheduled.yml

@@ -1,7 +1,10 @@
 name: scheduled-dep-check
 on:
   schedule:
-    - cron: "0 6 * * 1"        # Mondays 06:00 UTC
+    # Daily: both resolutions here are unpinned, so an upstream release can break main
+    # between runs. Daily bounds that window at a day and attributes the failure to upstream
+    # (a tracking issue) instead of to whichever pull request happens to run next.
+    - cron: "0 6 * * *"        # daily 06:00 UTC
   workflow_dispatch: {}
 
 concurrency: