diff --git a/docs/FRICTION.md b/docs/FRICTION.md
index d038954..0fae4f9 100644
--- a/docs/FRICTION.md
+++ b/docs/FRICTION.md
@@ -117,6 +117,41 @@ _(append new raw signals here; the next kaizen review consumes them)_
   line must be a classified, expected change) before accepting any "presentational-only"
   restructure; consider a helper script.
 
+- `[friction]` **ansible-lint `var-naming[no-role-prefix]` rejects the ADR-021/022
+  `access__*`/`backup__*` cross-role field names** (2026-06-14): building the first
+  service role's records (`reverse_proxy`), adding the ADR-mandated `access__*` /
+  `backup__*` data to `defaults/main.yml` failed lint — the rule requires every role var
+  to start with `<rolename>_`, and ansible-lint 24.x has **no per-prefix allowlist**. The
+  double-underscore `reverse_proxy__*` namespace passes (starts with `reverse_proxy_`),
+  but the deliberately shared `access__`/`backup__` names don't. Resolved with inline
+  `# noqa: var-naming[no-role-prefix]` per var (keeps the rule enforced elsewhere). This
+  **will recur in every service role**. → decide a project-wide policy before the next
+  service role: a documented `.ansible-lint` stance, a sanctioned noqa snippet baked into
+  the `make new-role` scaffold, or reconcile the convention. First collision because
+  `reverse_proxy` is the first built service role.
+
+- `[gotcha]` **Molecule CAN exercise tag-propagation, but only with a tagged converge +
+  full-then-partial sequencing** (2026-06-14): closing part of the 2026-06-14 `apply:
+  {tags:}` signal ("Molecule converges untagged, so it can't catch tag-propagation"). Added
+  a second converge play (`include_role` with `apply: {tags: [config]}` + a fresh user)
+  and an assertion, then proved the fix with `molecule converge -- --tags config`. Caveat
+  learned the hard way: a partial-tag run on a **fresh** instance fails on cross-concern
+  deps (a `config` task needs `git`, installed by the `packages` concern), and untagged
+  pre_tasks (test-user creation) get filtered out — so the realistic test is **full
+  converge → partial re-run** (idempotent), and harness pre_tasks need `tags: [always]`.
+  → adopt the tagged-converge-play pattern for any role with concern subsets; this is the
+  CI check the prior signal asked for, in Molecule rather than `make deploy`.
+
+- `[recurring]` **ADRs claim cross-doc reconciliation they didn't actually perform**
+  (2026-06-14): ADR-024's Status + Consequences asserted "ADR-017 prose that mentioned
+  Traefik is updated to read Caddy" — but ADR-008/017/019 + CAPABILITIES still said
+  Traefik; the rename was left half-done across the doc set and the ADR over-claimed its
+  own follow-through. Surfaced only by a full-repo `grep Traefik` during `/review-repo`.
+  Same shape as the deferred-decision-goes-stale signal (a decision lands in one place,
+  its promised ripple edits don't). → candidate `repo-scan.py` check: when an ADR's text
+  asserts "X is updated to Y" / supersedes a named tool, flag remaining occurrences of the
+  old name (or verify the claimed edit landed) — the structural cousin of `stale-deferred`.
+
 ---
 
 ## Kaizen reviews — decisions ledger