chore(plans): record sweep re-read + GroupToTag summary follow-ups as closed

docs/plans/2026-08-18-followups-and-tickets.md

@@ -511,12 +511,26 @@ Notable findings made along the way:
   other's child nodes (MSB4166) — `-m:1` avoids it; ssh can transiently refuse with "Too
   many authentication failures" under agent concurrency (back off and retry).
 
-Follow-ups recorded, not started (deliberately small):
+Follow-ups recorded, not started (deliberately small) — *first two closed 2026-08-18 on
+`feat/sweep-reread-tag-summary`*:
 
 - The `fca978d` sweep re-read (above) — the one genuinely ticket-worthy item.
+  *Closed in `f82dac1`: a mechanical pre-pass narrowed the sweep's 1,383 deletions to
+  68 files / 816 residual prose lines; a judged review of every one found 17 collateral
+  deletions across 10 files (rationale prose with no surviving equivalent — SessionManager
+  metrics invariants, HubTokenService hollow-token guard, AcknowledgeAlarm routing
+  remarks, LmxSubtagAlarmSource unsecured-write/idempotency notes, WnWrapAlarmConsumer's
+  WIN-911 precedent, DashboardSessionAdminService error-boundary catches,
+  WorkerPipeSession factory-null throw, three test-design rationales) — all restored,
+  markers left stripped. Everything else flagged verified benign (`<inheritdoc/>`
+  resolves to equal-or-richer interface docs, or the substance survives relocated).
+  Verified: NonWindows slnx 0W/0E, touched gateway test classes 65/65; windev worker
+  x86 build 0W/0E, worker suite 524/11/0.*
 - `DashboardGroupTagMapping`'s class-level `<summary>` still describes the lookup as
   "full DN first, leading-RDN fallback" — accurate mechanics, but it could point at the
   short-name-keys consequence the inline comment now records.
+  *Closed in `4b6f907`: the summary now states full-DN keys can never match and points
+  at the lookup comment in `MapGroupsToTags`.*
 - wwtools `mxa read` human-readable formatter throws `RuntimeBinderException` on a failed
   read (`ReadCommand.cs:137`); `--llm-json` works. Different repo, noted here so it isn't
   lost.