fix(comments): title=comment_id; route by docket into Rules/Comments/<docket>

Two related fixes for how regulations.gov comment items show up in
Zotero.

Title was "Comment on <comment_on_id>" — but ``comment_on_id`` is the
*parent rule's* document id, so every comment under a single rule
appeared with an identical title in the Zotero list view. Use
``comment.id`` instead (the comment's own CMS-DOCKET-XXXX-NNNN id),
optionally prefixed with the byline when the commenter populated
firstName/lastName/organization.

Collection routing put every comment into a flat Rules/Comments
folder. With ~164k items that's unusable; route to
Rules/Comments/<docket_id> instead. The docket comes from the
``reg-docket:`` tag set by ``cli/bib.py`` when fetching PFS comments
(via ``api.resolve_docket``) — not the ``docket:`` tag, which is
sourced from regulations.gov's comment-detail attrs.docketId field
that's unpopulated for the bulk of submissions.

Companion to a one-shot SQL migration that retitled 164,214 existing
items in bib + Zotero and moved them out of the flat Rules/Comments
into per-docket sub-collections (CMS-2017-0092 … CMS-2025-0304).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/bib/regulations_gov.py

@@ -540,10 +540,14 @@ def upsert_comment(
     extra_tags: list[str] | None = None,
 ) -> str:
     """Upsert the comment as a Source item, return bib key."""
-    title = comment.title or f"Comment on {comment.comment_on_id}"
+    # Title = the comment's own CMS-DOCKET-XXXX-NNNN id, optionally
+    # prefixed with the byline (org or first/last name) when the
+    # commenter filled those fields in. The previous "Comment on
+    # <comment_on_id>" form named the *parent rule* instead of the
+    # comment, which made every comment under a single rule look
+    # identical in the Zotero list.
     byline = _byline(comment)
-    if byline:
-        title = f"{byline}: {title[:120]}"
+    title = f"{byline}: {comment.id}" if byline else comment.id
 
     url = f"https://www.regulations.gov/comment/{comment.id}"
     item = Source(title=title, url=url)

src/bib/sync.py

@@ -391,9 +391,20 @@ def _zotero_collection_path(item: Item) -> list[str]:
         manual = (ej.get("manual_name") or "").strip() or "General"
         return ["Healthcare Data Platform", "Manuals", manual]
     if "source:regulations-gov" in item.tags:
-        # Every rulemaking comment lands flat in Rules/Comments. The
-        # rule:<id> and year:<Y> tags on each item carry the
-        # disambiguating citation, so a single bucket is readable.
+        # Each rulemaking gets its own sub-collection under
+        # Rules/Comments/<docket_id> (e.g. CMS-2025-0304). Without this
+        # split, ~164k comments pile into a single Rules/Comments
+        # folder and the Zotero list view becomes unusable.
+        #
+        # Read from `reg-docket:` (set by cli/bib.py via api.resolve_docket),
+        # not `docket:` — the latter is sourced from regulations.gov's
+        # comment-detail attrs.docketId field which is empty for the
+        # bulk of comments.
+        for tag in item.tags:
+            if tag.startswith("reg-docket:"):
+                docket = tag.split(":", 1)[1]
+                if docket:
+                    return ["Rules", "Comments", docket]
         return ["Rules", "Comments"]
     if "source:email" in item.tags:
         # IMAP-ingested email lands under Inbox/<Mailbox-Title>.