Close the conversion-rate attribution-window item as deprioritized

Decided against the 3-7 day match-window/weekly-bucket idea for now: at
current follow/visit volumes, a week can have as few as 1-3 real follows,
too small for weekly aggregation to meaningfully reduce noise over daily
data. Moved from "outstanding" to "data_quality" as a recorded decision,
not silently dropped. Revisit if monthly volumes grow enough for the
technique to pay off.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

monthly_report_notes.py

@@ -83,6 +83,11 @@ NOTES = {
             "visitors but a real follower change (LinkedIn lets people follow a Page "
             "directly from a feed post, with no page visit at all). Every day now shows, "
             "with those days flagged instead of hidden.",
+            "Decided against the deeper 3-7 day attribution-window/weekly-bucket idea "
+            "discussed Jul 28: at current follow/visit volumes, a week can have as few "
+            "as 1-3 real follows, too small for weekly aggregation to meaningfully "
+            "reduce noise over daily data. Revisit if monthly volumes grow enough for "
+            "the technique to actually pay off.",
         ],
         "follower_study": [
             "Grew and was actively reclassified throughout July as new followers were "
@@ -96,9 +101,6 @@ NOTES = {
             "Aug 3 and falls outside this report.",
         ],
         "outstanding": [
-            "The conversion-rate weekly-bucket and 3 to 7 day match-window widening "
-            "discussed Jul 28, to make the follow-attribution pattern more convincing "
-            "across multiple weeks, is still conceptual, not implemented.",
             "Real Eng % rollout, two items still open: (1) only July's 8 posts plus 04/08 "
             "and 06/08 are hand-audited so far, every other post in the Content/Overview "
             "tabs' all-time history shows 'Pending audit' or is excluded from the "