@@ -976,7 +976,7 @@ AUTHOR-REACHABLE SURFACES: a saved report's `query.filter` (`sys_saved_report`)
 - **`flow-trigger-record-credential-masked`** — `the record and previous roots a record-change flow receives — a password or secret field, and an internal field, of the triggering record, on every object` → read a credential through a privileged binder — the flow credential channel for an http node's signing secret, or a privileged server-side read such as the engine's resolveSecretField — never off `record` or `previous`; on those roots a set credential-class field now reads as the mask `SECRET_MASK`, an unset one as null, and an `internal: true` field is absent
   - Why not automatic: ADR-0100: a credential-class value leaves the engine only through a privileged dereference, and every generic channel serves the mask. The record-change trigger built a flow's record and previous from the engine's own write result, which keeps the stored row whole for privileged in-process callers, so a password field's plaintext, a secret field's stored handle and an internal field's value reached the flow — and from there its variables, a paused run's persisted state and that state's read doors. The trigger now projects both roots through the same helper every external write response uses: a credential-class field (secret, and password outside the exempt managedBy buckets) carries the mask, or null when unset, and an internal field is omitted. Every other field keeps its value, every other variable is untouched, and the engine's own write result, the stored row and the privileged read paths are unchanged.
   - Done when: No flow reads a password, secret or internal field off its trigger record or previous values expecting the stored value; a flow that needs a credential obtains it through a privileged binder; a start or edge condition that compared such a field against a literal is rewritten to test whether it is set (not null).
-- **`flow-value-slot-template-dialect-refused`** — `flows[].nodes[].config of an assignment node (the assignments map, the legacy assignments array and the legacy bare config) and of create_record and update_record nodes (the fields map) — a string value, or a string anywhere inside an array or object value, carrying a single-brace template token` → a CEL value envelope, { dialect: "cel", source: "…" }, evaluated to the value: a path is the same path (record.owner; a numeric segment becomes an index, list[0]; a variable whose name starts with $ is read through vars, vars["$error"].message), arithmetic is the same arithmetic with every integer divisor written as a double (round(x * 100) / 100.0), and text with holes is one concatenation ('Hello ' + o.name). A string with no token is the literal text it spells, and braces meant literally are a CEL string literal
+- **`flow-value-slot-template-dialect-refused`** — `flows[].nodes[].config of an assignment node (the assignments map, the legacy assignments array and the legacy bare config) and of create_record and update_record nodes (the fields map) — a string value, or a string anywhere inside an array or object value, carrying a single-brace template token` → a CEL value envelope, { dialect: "cel", source: "…" }, evaluated to the value: a path is the same path (record.owner; a numeric segment becomes an index, items[0]; a variable whose name starts with $ is read through vars, vars["$error"].message), arithmetic is the same arithmetic with every integer divisor written as a double (round(x * 100) / 100.0), and text with holes is one concatenation ('Hello ' + o.name). A string with no token is the literal text it spells, and braces meant literally are a CEL string literal
   - Why not automatic: The interpolator and the CEL engine answer differently for every token spelling authored in flows, so no conversion is lossless (ADR-0087 D2) and none is applied. A path, an absent variable, key or list index wrote nothing under the template and fails the run under CEL; text with a null hole rendered nothing and CEL refuses + null; CEL divides two integers as integers, so round(x * 100) / 100 truncates 123.46 to 123. Where a value may be absent, which of nothing, null or a default the field should take is the author's decision — the template decided it silently. Two spellings are kept with their old meaning, because CEL cannot write them yet: the date macros NOW() and TODAY() with a day offset (CEL yields a Timestamp, not the ISO text, and has no string form for one) and the run-user paths beginning $User. (the flow CEL scope binds no user). A flow carrying a refused value is refused at registration, by objectstack validate and by the executor; a stored flow carrying one is skipped at boot with a warn naming it.
   - Done when: Run objectstack validate: it reports each refused value as expression-invalid at the node and the value's path, with the CEL spelling of its tokens. Rewrite each as that envelope; where a variable or key may be absent, guard it (has(record.owner) ? record.owner : null, has(vars.x) ? vars.x : null for a variable) or route around the node. Re-run the flow paths that write those fields and compare the stored values with the ones the template wrote.
 - **`flow-write-node-stored-metadata-target-refused`** — `a create_record, update_record or delete_record flow node whose config.objectName is the string sys_metadata or sys_metadata_history, at any depth including an ADR-0031 region body` → Change metadata through the metadata API (`PUT /api/v1/meta/:type/:name`, the metadata protocol), where it is validated and its provenance is recorded. Delete the node, or point its `objectName` at the object the flow really means to write. Elevation (`runAs`, a system context) does not change this.
 
@@ -2215,7 +2215,7 @@
       },
       {
         "surface": "flows[].nodes[].config of an assignment node (the assignments map, the legacy assignments array and the legacy bare config) and of create_record and update_record nodes (the fields map) — a string value, or a string anywhere inside an array or object value, carrying a single-brace template token",
-        "replacement": "a CEL value envelope, { dialect: \"cel\", source: \"…\" }, evaluated to the value: a path is the same path (record.owner; a numeric segment becomes an index, list[0]; a variable whose name starts with $ is read through vars, vars[\"$error\"].message), arithmetic is the same arithmetic with every integer divisor written as a double (round(x * 100) / 100.0), and text with holes is one concatenation ('Hello ' + o.name). A string with no token is the literal text it spells, and braces meant literally are a CEL string literal",
+        "replacement": "a CEL value envelope, { dialect: \"cel\", source: \"…\" }, evaluated to the value: a path is the same path (record.owner; a numeric segment becomes an index, items[0]; a variable whose name starts with $ is read through vars, vars[\"$error\"].message), arithmetic is the same arithmetic with every integer divisor written as a double (round(x * 100) / 100.0), and text with holes is one concatenation ('Hello ' + o.name). A string with no token is the literal text it spells, and braces meant literally are a CEL string literal",
         "migrationId": "flow-value-slot-template-dialect-refused",
         "toMajor": 18,
         "rationale": "The interpolator and the CEL engine answer differently for every token spelling authored in flows, so no conversion is lossless (ADR-0087 D2) and none is applied. A path, an absent variable, key or list index wrote nothing under the template and fails the run under CEL; text with a null hole rendered nothing and CEL refuses + null; CEL divides two integers as integers, so round(x * 100) / 100 truncates 123.46 to 123. Where a value may be absent, which of nothing, null or a default the field should take is the author's decision — the template decided it silently. Two spellings are kept with their old meaning, because CEL cannot write them yet: the date macros NOW() and TODAY() with a day offset (CEL yields a Timestamp, not the ISO text, and has no string form for one) and the run-user paths beginning $User. (the flow CEL scope binds no user). A flow carrying a refused value is refused at registration, by objectstack validate and by the executor; a stored flow carrying one is skipped at boot with a warn naming it."
@@ -5804,7 +5804,7 @@
         },
         {
           "surface": "flows[].nodes[].config of an assignment node (the assignments map, the legacy assignments array and the legacy bare config) and of create_record and update_record nodes (the fields map) — a string value, or a string anywhere inside an array or object value, carrying a single-brace template token",
-          "replacement": "a CEL value envelope, { dialect: \"cel\", source: \"…\" }, evaluated to the value: a path is the same path (record.owner; a numeric segment becomes an index, list[0]; a variable whose name starts with $ is read through vars, vars[\"$error\"].message), arithmetic is the same arithmetic with every integer divisor written as a double (round(x * 100) / 100.0), and text with holes is one concatenation ('Hello ' + o.name). A string with no token is the literal text it spells, and braces meant literally are a CEL string literal",
+          "replacement": "a CEL value envelope, { dialect: \"cel\", source: \"…\" }, evaluated to the value: a path is the same path (record.owner; a numeric segment becomes an index, items[0]; a variable whose name starts with $ is read through vars, vars[\"$error\"].message), arithmetic is the same arithmetic with every integer divisor written as a double (round(x * 100) / 100.0), and text with holes is one concatenation ('Hello ' + o.name). A string with no token is the literal text it spells, and braces meant literally are a CEL string literal",
           "migrationId": "flow-value-slot-template-dialect-refused",
           "toMajor": 18,
           "rationale": "The interpolator and the CEL engine answer differently for every token spelling authored in flows, so no conversion is lossless (ADR-0087 D2) and none is applied. A path, an absent variable, key or list index wrote nothing under the template and fails the run under CEL; text with a null hole rendered nothing and CEL refuses + null; CEL divides two integers as integers, so round(x * 100) / 100 truncates 123.46 to 123. Where a value may be absent, which of nothing, null or a default the field should take is the author's decision — the template decided it silently. Two spellings are kept with their old meaning, because CEL cannot write them yet: the date macros NOW() and TODAY() with a day offset (CEL yields a Timestamp, not the ISO text, and has no string form for one) and the run-user paths beginning $User. (the flow CEL scope binds no user). A flow carrying a refused value is refused at registration, by objectstack validate and by the executor; a stored flow carrying one is skipped at boot with a warn naming it."
 
@@ -14280,7 +14280,7 @@ const step18: MigrationStep = {
         + 'string anywhere inside an array or object value, carrying a single-brace template token',
       replacement:
         'a CEL value envelope, { dialect: "cel", source: "…" }, evaluated to the value: a path is the same path '
-        + '(record.owner; a numeric segment becomes an index, list[0]; a variable whose name starts with $ is read '
+        + '(record.owner; a numeric segment becomes an index, items[0]; a variable whose name starts with $ is read '
         + 'through vars, vars["$error"].message), arithmetic is the same arithmetic with every integer divisor written '
         + 'as a double (round(x * 100) / 100.0), and text with holes is one concatenation (\'Hello \' + o.name). A '
         + 'string with no token is the literal text it spells, and braces meant literally are a CEL string literal',