@@ -508,12 +508,12 @@
       "source": [
         "#3358 §1 (the action-table evidence this matrix grounds in)",
         "packages/rest/src/rest-route-ledger.ts (approve/reject/recall/revise/resubmit/reassign/remind/request-info/comment + GET /:id/actions)",
-        "packages/rest/src/rest-server.ts#flowMoveRoute (flowMoveRoute: revise=pending approver, resubmit=submitter; threadRoute access per action; recall submitter-only)",
+        "packages/rest/src/approvals-routes.ts#flowMoveRoute (flowMoveRoute: revise=pending approver, resubmit=submitter; threadRoute access per action; recall submitter-only)",
         "packages/plugins/plugin-approvals/src/approval-service.ts#ApprovalService (ApprovalService.resubmit — 'traversal walks the declared back-edge into the approval node, whose executor opens the round-N+1 request'; the resubmitted row's status is never rewritten. sendBack counts prior rounds as returned siblings on flow_run_id + flow_node_id)",
         "packages/spec/src/contracts/approval-service.ts#APPROVAL_STATUSES (APPROVAL_STATUSES: pending|approved|rejected|recalled|returned)",
         "examples/app-showcase/src/automation/flows/index.ts#BudgetApprovalFlow (BudgetApprovalFlow — ADR-0044 revise loop, maxRevisions 2, exec step without a revise edge, lockRecord pair)",
         "packages/plugins/plugin-approvals/src/approval-service.ts#readBackRequest (readBackRequest — the write path's post-mutation echo; #12769 docblock: org-less rows are a live state, the null echo used to escape behind the callers' fresh! non-null assertions, now it refuses loudly; landed as PR #13181)",
-        "packages/rest/src/rest-server.ts#handleApprovalError (handleApprovalError prefix map — READ_BACK_FAILED deliberately unmapped, so it reaches the wire as the generic 500 APPROVAL_<action>_FAILED envelope carrying the named text)"
+        "packages/rest/src/approvals-routes.ts#handleApprovalError (handleApprovalError prefix map — READ_BACK_FAILED deliberately unmapped, so it reaches the wire as the generic 500 APPROVAL_<action>_FAILED envelope carrying the named text)"
       ],
       "history": [
         { "revision": 1, "date": "2026-08-07", "change": "initial — decision-action matrix derived from the approvals REST route ledger and the ADR-0044 revise/resubmit flow shape", "ref": "claude/platform-test-checklist-ocwugl" },
 
@@ -2414,7 +2414,7 @@
       "source": [
         "objectui: packages/plugin-detail/src/ConcurrentUpdateDialog.tsx (Reload/Overwrite UX), packages/plugin-form/src/occSave.tsx (If-Match → 409, conflict dialog, re-key overwrite)",
         "objectui: packages/plugin-detail/src/InlineEditSaveBar.tsx + packages/react/src/context/InlineEditContext.tsx (one save bar, changed-keys draft, ifMatch)",
-        "framework: packages/rest/src/rest-server.ts#mapping (CONCURRENT_UPDATE → 409 mapping), packages/metadata-protocol/src/protocol.ts#updateData updateData (If-Match / expectedVersion)",
+        "framework: packages/rest/src/approvals-routes.ts#mapping (CONCURRENT_UPDATE → 409 mapping), packages/metadata-protocol/src/protocol.ts#updateData updateData (If-Match / expectedVersion)",
         "PENDING-GAPS §C concurrent-edit-conflict + §E1 inline-edit atomic two-surface (objectui#2542/2549/2604); cross-ref records-forms.crud-roundtrip"
       ],
       "history": [
 
@@ -35,11 +35,25 @@ import {
   LEDGER_POPULATION_BASELINE,
   LEDGER_POPULATION_BASELINE_MAX,
 } from './authz-ledger-population.baseline.js';
+// [#23050 slice 3] THE list of the files `RestServer`'s registrars live in —
+// see the two `rest-server.ts` realtime tripwires below.
+import {
+  REST_SERVER_REGISTRAR_DIR,
+  REST_SERVER_REGISTRAR_FILES,
+} from '../../../rest/src/rest-server-registrar-files.js';
 
 const HERE = dirname(fileURLToPath(import.meta.url));
 // packages/qa/dogfood/test → repo root.
 const REPO_ROOT = join(HERE, '../../../..');
 
+// [#23050 slice 3] Every file on the registrar list, repo-relative, and the ones
+// beyond `rest-server.ts` that the realtime tripwires read WITH it.
+const REST_SERVER_FILE = 'packages/rest/src/rest-server.ts';
+const REST_SERVER_REGISTRAR_PATHS: readonly string[] =
+  REST_SERVER_REGISTRAR_FILES.map((file) => `${REST_SERVER_REGISTRAR_DIR}/${file}`);
+const REST_SERVER_REGISTRAR_ALSO_READS: readonly string[] =
+  REST_SERVER_REGISTRAR_PATHS.filter((file) => file !== REST_SERVER_FILE);
+
 // ── #7976 — mutual row ↔ proof attribution ────────────────────────────────
 // A proof file self-declares the rows it is the proof FOR with header
 // `// authz-row: <id>` lines, and `checkLedger` asserts the pairing both ways.
@@ -123,6 +137,17 @@ interface Probe {
    * reading OF the table rather than of the file that carries it.
    */
   within?: string;
+  /**
+   * [#23050 slice 3] More files read WITH `file`, as one text. Only the two
+   * `rest-server.ts` realtime tripwires declare it: they watch the code
+   * `RestServer`'s registrars run, and the split of `rest-server.ts` moves
+   * registrar bodies into modules of their own, so they read every file on the
+   * registrar list (`packages/rest/src/rest-server-registrar-files.ts`,
+   * imported above) and a transport wired in a moved body still trips them.
+   * `file` stays the one file the entry NAMES — what the probe-table census and
+   * the matrix header count — and the minted key is unchanged.
+   */
+  alsoReads?: readonly string[];
   key: (m: RegExpExecArray) => string;
 }
 
@@ -430,12 +455,14 @@ const PROBES: readonly Probe[] = [
   {
     kind: 'TRIPWIRE',
     file: 'packages/rest/src/rest-server.ts',
+    alsoReads: REST_SERVER_REGISTRAR_ALSO_READS,
     re: /handleUpgrade\s*\(|new\s+WebSocketServer\b|new\s+WebSocket\b|new\s+EventSource\b|upgradeWebSocket\b|WebSocketPair\b|Sec-WebSocket-|text\/event-stream|streamSSE\s*\(/g,
     key: () => tripwireKey('realtime:rest-server.ts:transport'),
   },
   {
     kind: 'TRIPWIRE',
     file: 'packages/rest/src/rest-server.ts',
+    alsoReads: REST_SERVER_REGISTRAR_ALSO_READS,
     // Word-boundary lookaheads on `ws`/`stream` keep the file's 31 unrelated
     // response-streaming references (and paths like `/workspaces`) out: they
     // are matched only as a whole route segment, never as a prefix.
@@ -520,7 +547,10 @@ const PROBES: readonly Probe[] = [
  */
 function probeSource(probe: Probe): string {
   const src = readFileSync(join(REPO_ROOT, probe.file), 'utf8');
-  return probe.within ? scopedSource(src, probe.within) : src;
+  if (probe.within) return scopedSource(src, probe.within);
+  // [#23050 slice 3] `alsoReads` widens the read, never the scope: no probe
+  // declares both, and `within` above returns before it.
+  return [src, ...(probe.alsoReads ?? []).map((file) => readFileSync(join(REPO_ROOT, file), 'utf8'))].join('\n');
 }
 
 /**
@@ -1591,6 +1621,18 @@ describe('#9084 — the rest-server.ts transport tripwire keys off mechanics', (
     const src = readFileSync(join(REPO_ROOT, REST_SERVER), 'utf8');
     expect(hits(MECHANICS.re, src)).toEqual([]);
     expect(hits(ROUTES.re, src)).toEqual([]);
+    // [#23050 slice 3] …and on every file `RestServer`'s registrars live in:
+    // 0 over the list, whose length is pinned so a module added to it makes this
+    // re-read. The control is that both probes really READ the list — their
+    // text is every file on it, in order — so the zero is not a list ignored.
+    expect(REST_SERVER_REGISTRAR_FILES).toHaveLength(4);
+    expect(REST_SERVER_REGISTRAR_PATHS[0]).toBe(REST_SERVER);
+    const listed = REST_SERVER_REGISTRAR_PATHS.map((file) => readFileSync(join(REPO_ROOT, file), 'utf8'));
+    for (const probe of [MECHANICS, ROUTES]) {
+      expect(probe.alsoReads).toEqual(REST_SERVER_REGISTRAR_PATHS.slice(1));
+      expect(probeSource(probe)).toBe(listed.join('\n'));
+    }
+    expect(listed.reduce((n, text) => n + hits(MECHANICS.re, text).length + hits(ROUTES.re, text).length, 0)).toBe(0);
     // …and the surface walk agrees: no rest-server tripwire key is minted.
     const discovered = [...discoverAnonymousDenySurfaces()].filter((k) =>
       k.startsWith('realtime:rest-server.ts:'),
 
@@ -238,6 +238,12 @@
 import { readFileSync } from 'node:fs';
 import { fileURLToPath } from 'node:url';
 import { dirname, join } from 'node:path';
+// [#23050 slice 3] THE list of the files `RestServer`'s registrars live in —
+// see the `rest-server.ts` row's population rule.
+import {
+  REST_SERVER_REGISTRAR_DIR,
+  REST_SERVER_REGISTRAR_FILES,
+} from '../../../rest/src/rest-server-registrar-files.js';
 
 const HERE = dirname(fileURLToPath(import.meta.url));
 // packages/qa/dogfood/test → repo root.
@@ -511,9 +517,10 @@ export const PROBE_FILE_CENSUS: readonly ProbeFileReading[] = [
       'route registration sites — `this.routeManager.register(` call sites, LESS the one inside ' +
       '`registerPerItemRoute` (the shared forwarder, not a route; its extent is bounded by the declaration\'s own ' +
       'indentation and the subtrahend is pinned at 1 by the `forwarder slice:` control, never inferred from a ' +
-      'terminator spelling), PLUS `registerPerItemRoute(` call sites; counted over this file AND ' +
-      '`data-action-routes.ts` and `batch-routes.ts`, the modules the bodies of `registerDataActionEndpoints` ' +
-      'and `registerBatchEndpoints` moved to; ' +
+      'terminator spelling), PLUS `registerPerItemRoute(` call sites; counted over this file AND every ' +
+      'module on the registrar list (`packages/rest/src/rest-server-registrar-files.ts`) — ' +
+      '`data-action-routes.ts`, `batch-routes.ts` and `approvals-routes.ts`, the modules the bodies of ' +
+      '`registerDataActionEndpoints`, `registerBatchEndpoints` and `registerApprovalsEndpoints` moved to; ' +
       'reachable = those inside registerMetadataEndpoints',
     // [#15542 / #15854] ⭐ THE POPULATION RULE LEARNED A SECOND SPELLING, and
     // the numbers it produces did NOT move: 80 / 19 / 61, exactly as before.
@@ -657,19 +664,34 @@ export const PROBE_FILE_CENSUS: readonly ProbeFileReading[] = [
     // are counted in both readings; the four new occurrences are that slice's
     // seam, the same two spellings as slice 1's (the host literal's forwarder,
     // two; the host interface's member, two). No call site was added.
+    // [#23050 slice 3] 70 / 19 / 51 UNCHANGED, the same measurement again:
+    // `registerApprovalsEndpoints`' body (seven registration sites, all outside
+    // `registerMetadataEndpoints`, so all in the blind spot) moved to
+    // `approvals-routes.ts`. The population rule now reads the registrar LIST
+    // rather than naming each module, so the slice that moves the next body
+    // widens it by adding its module there; each module keeps its own control
+    // and the list's length is one too. `this.routeManager.register(` stays 63
+    // over the four files (42 here + 9 + 5 + 7), `private register*Endpoints(`
+    // stays 16, and `enforceAuth` 68 -> 72 is RE-ANCHORED, not relaxed: the
+    // seven call sites moved with their routes and are counted in both
+    // readings; the four new occurrences are this slice's seam, the same two
+    // spellings (the host literal's forwarder, two; the host interface's
+    // member, two). No call site was added.
     controls: {
       'private register*Endpoints(': 16,
       'this.routeManager.register(': 63,
+      'registrar list length': 4,
       'data-action-routes.ts: this.routeManager.register(': 9,
       'batch-routes.ts: this.routeManager.register(': 5,
+      'approvals-routes.ts: this.routeManager.register(': 7,
       // Both halves of the new rule carry their own control, so neither can go
       // silently to zero: a helper deleted and its routes inlined back would
       // still read population 80, and only these two controls would notice the
       // shape moved and force this provenance to be re-read.
       'registerPerItemRoute(': 8,
       'const registerPerItemRoute =': 1,
       'forwarder slice: this.routeManager.register(': 1,
-      enforceAuth: 68,
+      enforceAuth: 72,
     },
     note:
       'The single non-tripwire probe names ONE registrar of 16. The other 15 can never mint a key: ' +
@@ -1045,13 +1067,22 @@ export function deriveProbeFileCensus(): {
     // no route. The moved module defines no registrar (`private register…(`) and
     // no `registerPerItemRoute`, so appending it moves neither the forwarder
     // slice nor the `reachable` slice; its own control below proves it is read.
-    const moved = read('packages/rest/src/data-action-routes.ts');
+    //
     // [#23050 slice 2] The same lesson, again: `registerBatchEndpoints`' body
     // moved to `batch-routes.ts` with its five registration sites. Appended for
     // the same reason and on the same terms — it declares no registrar and no
     // `registerPerItemRoute` either — with its own control below.
-    const movedBatch = read('packages/rest/src/batch-routes.ts');
-    const all = `${src}\n${moved}\n${movedBatch}`;
+    //
+    // [#23050 slice 3] …and `registerApprovalsEndpoints`' body to
+    // `approvals-routes.ts`, with its seven. The modules are no longer named
+    // here one by one: they are read off THE registrar list, in its order, so
+    // the slice that moves the next body adds its module there once. Every
+    // module on it is appended on the same terms and gets its own control
+    // below, and the list's length is a control too.
+    const movedModules = REST_SERVER_REGISTRAR_FILES
+      .filter((file) => file !== 'rest-server.ts')
+      .map((file) => [file, read(`${REST_SERVER_REGISTRAR_DIR}/${file}`)] as const);
+    const all = [src, ...movedModules.map(([, text]) => text)].join('\n');
     const registrarRe = /^\s*private\s+register[A-Za-z]*Endpoints\s*\(/gm;
     const mountRe = /this\.routeManager\.register\(/g;
     // Matches the CALL sites only. The declaration reads
@@ -1152,10 +1183,14 @@ export function deriveProbeFileCensus(): {
       controls: {
         'private register*Endpoints(': occurrences(src, /private\s+register[A-Za-z]*Endpoints\s*\(/g),
         'this.routeManager.register(': occurrences(all, /this\.routeManager\.register\(/g),
+        // [#23050 slice 3] The registrar list's length, so a module added to it
+        // makes this row re-read its numbers.
+        'registrar list length': REST_SERVER_REGISTRAR_FILES.length,
         // [#23050 slice 1] The moved module's own share, so a reading that
         // silently stopped appending it cannot hide behind the total above.
-        'data-action-routes.ts: this.routeManager.register(': occurrences(moved, /this\.routeManager\.register\(/g),
-        'batch-routes.ts: this.routeManager.register(': occurrences(movedBatch, /this\.routeManager\.register\(/g),
+        // [#23050 slice 3] One such control per module on the list.
+        ...Object.fromEntries(movedModules.map(([file, text]) =>
+          [`${file}: this.routeManager.register(`, occurrences(text, /this\.routeManager\.register\(/g)])),
         'registerPerItemRoute(': occurrences(src, /registerPerItemRoute\(/g),
         'const registerPerItemRoute =': occurrences(src, /const\s+registerPerItemRoute\s*=/g),
         // ⭐ The one control here that is NOT a whole-file count, deliberately: