docs: explain core taxonomy bootstrap maintenance

CHANGELOG.md

@@ -10,6 +10,7 @@ so entries say what changed, cite the issue, and stop.
 - BUILDER.md — the handed-off PR is the parked claim's fourth shape, its handoff is its declaration, and shape 2 covers the round awaiting its first verdicts (#109).
 - `labels-reconcile` — a degraded mergeability/checks read now logs gh's actual stderr (collapsed, bounded) beside the byte-identical counted line, and the blind-sweep warning leads with the observed reason instead of asserting the permissions cause (#101).
 - Changelog publication — count entries instead of bytes, refuse dangling grouped headings, and seed grouped re-arms with Added/Changed/Fixed (#98).
+- `labels-reconcile` — warn once per sweep when a repository lacks labels declared by the pinned core taxonomy (#105).
 - `labels-reconcile` — grant callers private-repo check reads and warn when an entire PR sweep is blind (#95).
 - `labels-reconcile` — the bootstrap now retires the six GitHub defaults `LABELS.md` publishes as deleted, tolerating both an already-absent label and a refused delete (#93).
 - `issueflow-reconcile` — a triage-authored issue arrival stands down with exit 0 instead of killing the run before the sweep (#91).

LABELS.md

@@ -190,7 +190,8 @@ on a PR would say the same thing twice and drift.
 
 The labels workflow (issue #10) recomputes PR state statelessly on PR events
 plus a 15-minute advisory cron, and bootstraps this taxonomy idempotently on
-manual dispatch. The same workflow reconciles issue-flow labels on issue
-events and during the scheduled sweep. Default GitHub labels (`duplicate`, `invalid`,
-`question`, `wontfix`, `help wanted`, `good first issue`) are deleted at
-bootstrap — a `question` is a discussion, not an issue.
+manual dispatch. The sweep warns when the core taxonomy declares a label the
+repository lacks. The same workflow reconciles issue-flow labels on issue
+events and during the scheduled sweep. Default GitHub labels (`duplicate`,
+`invalid`, `question`, `wontfix`, `help wanted`, `good first issue`) are
+deleted at bootstrap — a `question` is a discussion, not an issue.

docs/CONSUMERS.md

@@ -319,7 +319,10 @@ rows remain consumer-owned because paths and surfaces differ by repository.
 
 After adding the caller and configuration, run `workflow_dispatch` once to
 bootstrap labels on a fresh repository. Scheduled and PR-triggered runs only
-reconcile; they do not repeatedly upsert the taxonomy.
+reconcile; they do not repeatedly upsert the taxonomy. When a ceremony pin
+bump adds a core label, bump the pin first and then re-dispatch
+`workflow_dispatch`; the scheduled sweep warns when the pinned taxonomy
+declares a core label the repository lacks.
 
 ## Doctrine mirror
 

test/labels-reconcile.test.sh

@@ -654,7 +654,7 @@ blind_main_probe() {
     LABELS_CONF=.github/labels.conf
     gh() {
       if [ "$1" = label ] && [ "$2" = list ]; then
-        printf 'state:building\nstate:addressing\n'
+        core_label_rows | cut -d'|' -f1
       elif [ "$1" = pr ] && [ "$2" = list ]; then
         printf '101\n102\n'
       elif [ "$1" = pr ] && [ "$2" = view ]; then