feat(terminology): prose sweep tool and custodian workplan cleanup (CUST-WP-0055 T04)

Add sweep_workstream_prose.py for agent-guidance files, sweep active workplan
prose in-repo, tighten scan allowlist exclusions, and update ADR-001 closure
protocol to workplan-first terminology.

workplans/CUST-WP-0030-dashboard-entity-list-ux.md

@@ -152,14 +152,14 @@ description: >
   Import refCell from ./components/ref-cell.js.
   For each of the three entity tables (By Repo, By Workplan, Top Tasks):
   - Prepend a "REF" column using refCell(i+1, recordType, row.id).
-    Record types: "repos" for By Repo (using repo_id), "workstreams" for
+    Record types: "repos" for By Repo (using repo_id), "workplans" for
     By Workplan (using scope_id), "token-events" for Top Tasks (using
     task_id — note: links to the task landing page, not a token event page,
     until T04 is done; use recordType "tasks").
   - Add a Name column as the second data column:
     - By Repo: repo_slug (no truncation needed, slugs are short)
     - By Workplan: scope_id displayed as first 8 chars + "…" (unchanged)
-      → replace with workstream title if available; for now show scope_id
+      → replace with workplan title if available; for now show scope_id
       truncated to 36 chars with full UUID tooltip.
     - Top Tasks: task_id truncated to 80 chars with full-id tooltip.
   Keep all existing columns unchanged.
@@ -200,7 +200,7 @@ description: >
   Implement as a client-side sort applied after filtering and before slicing for
   max-results. For the first four options sort descending by the named field.
   For "Most Recent", sort each table's rows by the most recent created_at among
-  the individual token events belonging to that row's group (repo/workstream/task).
+  the individual token events belonging to that row's group (repo/workplan/task).
   Derive a lastEventAt lookup map from the already-fetched /token-events/ data;
   rows with no events sort last. The sort applies uniformly to all three tables.
 state_hub_task_id: "84183245-5016-4d87-ad6a-9cd5f6873245"
@@ -257,7 +257,7 @@ defining `eventId`, cascading into a `RuntimeError: wsId is not defined`
 on the next cell. Fixed by replacing all `FileAttachment` calls in landing
 pages with direct `fetch(${API}/...)` calls.
 
-### A03 — amendment — Workstream and repo landing pages missing
+### A03 — amendment — Workplan and repo landing pages missing
 
 T04 only created a token-event landing page. The By Workplan and By Repo
 tables also had REF links (to `/workstreams/<id>` and `/repos/<slug>`),
@@ -283,7 +283,7 @@ landing page returned "Token event not found". Fixed by:
 
 ### I02 — improvement — Entity FK fields on detail pages link to their targets
 
-On every detail page (token-event, task, workstream, repo), fields that hold
+On every detail page (token-event, task, workplan, repo), fields that hold
 a foreign-key UUID (`task_id`, `workstream_id`, `repo_id`) now render as
 clickable links with an async-loaded bubble-help showing the entity title.
 
@@ -322,11 +322,11 @@ come from the already-fetched `/repos/` list plus "All repos" at the top.
 Selecting a repo filters all three tables client-side to show only rows
 attributable to that repo. No API change needed.
 
-### I01 — improvement — Workstream and task Name columns show titles
+### I01 — improvement — Workplan and task Name columns show titles
 
-T05 originally showed truncated UUIDs in the Workstream and Task name
+T05 originally showed truncated UUIDs in the Workplan and Task name
 columns (the summary data carries only IDs, not titles). Improved by
 fetching `/workstreams/` and `/tasks/` in parallel with the token-event
 poll and building lookup maps (`wsMap`, `taskMap`). The Name column now
-displays `workstream.title` and `task.title` (truncated to 80 chars) with
+displays `workplan.title` and `task.title` (truncated to 80 chars) with
 the full UUID as tooltip.