diff --git a/docs/agent-environments.md b/docs/agent-environments.md
index ab05c16fa9..631c3bd725 100644
--- a/docs/agent-environments.md
+++ b/docs/agent-environments.md
@@ -442,6 +442,11 @@ A read with repeated query values uses replay, because the state query model
 does not infer repeated-parameter semantics. A repeated-query write is refused
 before it can change state for the same reason.
 
+List counters retain their recorded number or digit-string representation.
+Changing a digit-string counter preserves its observed zero-padding width;
+query-total inference remains limited to canonical decimal counts. Path matching
+uses the same segment parser as extraction, preserving empty internal segments.
+
 An item or list view that always spells a clock field otherwise than the
 entity's stored value names that spelling in `clock_formats`, and a value it
 never recorded, such as a created entity's clock, is rendered in it: a list that
diff --git a/src/application/environment/environmentStateAnswer.test.ts b/src/application/environment/environmentStateAnswer.test.ts
index 53e1dff00c..df70fc3471 100644
--- a/src/application/environment/environmentStateAnswer.test.ts
+++ b/src/application/environment/environmentStateAnswer.test.ts
@@ -52,6 +52,21 @@ const answer = (
   return result.value;
 };
 
+it("finds state entities using the recorded path's repeated separators", () => {
+  const serving = servingFrom([
+    ["GET", "/api//books/1", { id: 1, title: "Book" }],
+  ]);
+  const tool = serving.source.manifest.tools.find(
+    (candidate) => candidate.path_template === "/api//books/{id}",
+  );
+  if (tool === undefined) throw new Error("Missing double-separator item tool");
+  const result = answerFromState(serving, tool, { id: "1" });
+  expect(result).toMatchObject({
+    ok: true,
+    value: { body: { id: 1, title: "Book" }, state: { source: "state" } },
+  });
+});
+
 const refusal = (
   serving: StateServing,
   name: string,
diff --git a/src/application/environment/environmentStateCallLines.ts b/src/application/environment/environmentStateCallLines.ts
index 16709cd655..b2a0d3c9e7 100644
--- a/src/application/environment/environmentStateCallLines.ts
+++ b/src/application/environment/environmentStateCallLines.ts
@@ -2,6 +2,7 @@ import {
   allLines,
   collectionPathOf,
   collectionMatch,
+  segmentsOf,
   type SuppliedSegment,
   type StateListView,
 } from "../../domain/analysisView/environmentStateRules.js";
@@ -27,13 +28,11 @@ export const callSegments = (
   const names = environmentToolArguments(tool).path;
   const params = new Map(tool.params.map((param) => [param.index, param]));
   const segments: SuppliedSegment[] = [];
-  const template = tool.path_template
-    .slice(tool.path_template.indexOf("/") + 1)
-    .split("/");
+  const template = segmentsOf(tool.path_template);
   for (const [index, text] of template.entries()) {
     const param = params.get(index);
     if (param === undefined) {
-      if (text !== "") segments.push({ text, supplied: false });
+      segments.push({ text, supplied: false });
       continue;
     }
     const value = args[names.get(param.name) ?? param.name];
diff --git a/src/domain/analysisView/WebNetworkProjectionAccumulator.ts b/src/domain/analysisView/WebNetworkProjectionAccumulator.ts
index 2f9563f019..b7e770b3ee 100644
--- a/src/domain/analysisView/WebNetworkProjectionAccumulator.ts
+++ b/src/domain/analysisView/WebNetworkProjectionAccumulator.ts
@@ -13,6 +13,7 @@ import {
 } from "../webNetworkCapture.js";
 import { admitAnalysisViewData } from "./analysisViewDataAdmission.js";
 import { analysisViewInputError } from "./analysisViewErrors.js";
+import { analysisViewResultInputError } from "./analysisViewParent.js";
 import type { AnalysisViewParent } from "./analysisView.js";
 import {
   ENTRY_BYTES,
@@ -124,14 +125,7 @@ export const admitHarCaptureParent = (
   const parsed = safeParseOwnedWebNetworkCapture(parent.normalizedResult);
   if (!parsed.success)
     return err(
-      analysisViewInputError([
-        {
-          path: ["source"],
-          reason: "invalid_value",
-          message:
-            "Parent Evidence result does not match inspect_web_network_capture.",
-        },
-      ]),
+      analysisViewResultInputError(parent.normalizedResult, parsed.error),
     );
   if (parsed.data.format !== "har")
     return unsupported(
diff --git a/src/domain/analysisView/environmentStateGate.ts b/src/domain/analysisView/environmentStateGate.ts
index b1662e1e48..938efd7536 100644
--- a/src/domain/analysisView/environmentStateGate.ts
+++ b/src/domain/analysisView/environmentStateGate.ts
@@ -7,6 +7,7 @@ import {
   isObject,
   lastSegmentValue,
   listItems,
+  recordedItemCount,
   renderStateEntity,
   renderStateList,
   replaceAt,
@@ -280,17 +281,22 @@ const listFacts = (
       items.forEach((item) => union.add(item));
       const parent = plan.pointer === "" || !isObject(body) ? {} : body;
       const counted = Object.keys(parent).filter(
-        (name) => isItemTotal(name) && countOf(parent[name]) !== undefined,
+        (name) =>
+          isItemTotal(name) && recordedItemCount(parent[name]) !== undefined,
       );
       counting.set(
         record.ordinal,
-        counted.filter((name) => parent[name] === items.length),
+        counted.filter(
+          (name) => recordedItemCount(parent[name]) === items.length,
+        ),
       );
       // Only a line that pages at most can hold its whole collection; a total that differs from
       // the number listed, or a next page, shows it is partial.
       if (
         !startsAtBeginning(record.query) ||
-        counted.some((name) => countOf(parent[name]) !== items.length) ||
+        counted.some(
+          (name) => recordedItemCount(parent[name]) !== items.length,
+        ) ||
         Object.keys(parent).some((name) => continues(name, parent[name]))
       )
         return;
@@ -332,14 +338,6 @@ const isItemTotal = (name: string): boolean => {
   );
 };
 
-/** A count recorded as a number or as a string of digits. */
-const countOf = (value: JsonValue | undefined): number | undefined =>
-  typeof value === "number"
-    ? value
-    : typeof value === "string" && /^\d+$/u.test(value)
-      ? Number(value)
-      : undefined;
-
 const CONTINUATION_NAMES = new Set([
   "hasmore",
   "next",
diff --git a/src/domain/analysisView/environmentStateListQuery.ts b/src/domain/analysisView/environmentStateListQuery.ts
index 280d3325a3..b79a78be34 100644
--- a/src/domain/analysisView/environmentStateListQuery.ts
+++ b/src/domain/analysisView/environmentStateListQuery.ts
@@ -3,6 +3,8 @@ import { compareUnicodeCodePoints as compare } from "../unicodeCodePointOrder.js
 import { literalSubstringPredicate } from "../analysisSearch.js";
 import {
   isObject,
+  recordedItemCount,
+  formatItemCount,
   pointerTo,
   renderStateList,
   replaceAt,
@@ -569,13 +571,11 @@ export const learnQuery = (
 export const queryTotalCount = (
   value: JsonValue | undefined,
 ): number | undefined => {
-  const count =
-    typeof value === "number"
-      ? value
-      : typeof value === "string" && /^(?:0|[1-9]\d*)$/u.test(value)
-        ? Number(value)
-        : undefined;
-  return count !== undefined && Number.isSafeInteger(count) && count >= 0
+  const count = recordedItemCount(value);
+  return count !== undefined &&
+    Number.isSafeInteger(count) &&
+    count >= 0 &&
+    (typeof value !== "string" || String(count) === value)
     ? count
     : undefined;
 };
@@ -594,11 +594,7 @@ export const renderQueryList = (
       isObject(base) &&
       Object.hasOwn(base, name) &&
       queryTotalCount(base[name]) !== undefined
-        ? replaceAt(
-            body,
-            pointerTo(name),
-            typeof base[name] === "string" ? String(total) : total,
-          )
+        ? replaceAt(body, pointerTo(name), formatItemCount(total, base[name]!))
         : body,
     renderStateList(view, base, items),
   );
diff --git a/src/domain/analysisView/environmentStateRules.ts b/src/domain/analysisView/environmentStateRules.ts
index 3f53ffcc9d..7346c6b2ed 100644
--- a/src/domain/analysisView/environmentStateRules.ts
+++ b/src/domain/analysisView/environmentStateRules.ts
@@ -596,6 +596,25 @@ export const listItems = (
   return Array.isArray(items) && items.every(isObject) ? items : undefined;
 };
 
+/** An observed item count, retaining the original value separately for rendering. */
+export const recordedItemCount = (
+  value: JsonValue | undefined,
+): number | undefined =>
+  typeof value === "number"
+    ? value
+    : typeof value === "string" && /^\d+$/u.test(value)
+      ? Number(value)
+      : undefined;
+
+/** Spell a changed count with the recorded numeric/string type and digit width. */
+export const formatItemCount = (
+  count: number,
+  observed: JsonValue,
+): JsonValue =>
+  typeof observed === "string"
+    ? String(count).padStart(observed.length, "0")
+    : count;
+
 /** One entity as a view shows it: the view's fields it has, view-specific values first; volatile fields take `observed` values when given. */
 export const renderStateEntity = (
   entity: StateEntity,
@@ -650,10 +669,13 @@ export const renderStateList = (
 ): JsonValue => {
   const listed = listItems(base, view.pointer)?.length;
   return view.counters.reduce(
-    (body, name) =>
-      at(base, pointerTo(name)) === listed
-        ? replaceAt(body, pointerTo(name), items.length)
-        : body,
+    (body, name) => {
+      const observed = at(base, pointerTo(name));
+      if (listed === undefined || recordedItemCount(observed) !== listed)
+        return body;
+      const count = formatItemCount(items.length, observed!);
+      return replaceAt(body, pointerTo(name), count);
+    },
     replaceAt(base, view.pointer, [...items]),
   );
 };
diff --git a/src/domain/analysisView/environmentStateView.test.ts b/src/domain/analysisView/environmentStateView.test.ts
index 04cbcdf9a3..f1b5e7342d 100644
--- a/src/domain/analysisView/environmentStateView.test.ts
+++ b/src/domain/analysisView/environmentStateView.test.ts
@@ -23,6 +23,7 @@ import {
   at,
   identityCandidates,
   replaceAt,
+  renderStateList,
   type JsonObject,
 } from "./environmentStateRules.js";
 import { environmentStateFields } from "./environmentStateView.js";
@@ -332,6 +333,25 @@ it("lists the whole collection with its counter only when every recording did",
   );
 });
 
+it.each([1, "1", "001"])(
+  "retains item count representation %j in extracted list plans",
+  (total) => {
+    const body = { total, items: [{ id: 1, title: "One" }] };
+    const state = stateOf(captureOf([["GET", "/api/items", body]]));
+    const view = state.views.find((candidate) => candidate.shape === "list");
+    if (view?.shape !== "list") throw new Error("Expected an item list view");
+    expect(view.counters).toEqual(["total"]);
+    expect(renderStateList(view, body, body.items)).toEqual(body);
+    const added = renderStateList(view, body, [
+      ...body.items,
+      { id: 2, title: "Two" },
+    ]);
+    expect(added).toMatchObject({
+      total: typeof total === "string" ? "2".padStart(total.length, "0") : 2,
+    });
+  },
+);
+
 it("leaves recorded the views it cannot reproduce, with the reason", () => {
   const state = stateOf(
     captureOf([
diff --git a/src/domain/analysisView/webNetworkApiSurfaceView.test.ts b/src/domain/analysisView/webNetworkApiSurfaceView.test.ts
index 0c5e0b5bd2..d2e9662bd7 100644
--- a/src/domain/analysisView/webNetworkApiSurfaceView.test.ts
+++ b/src/domain/analysisView/webNetworkApiSurfaceView.test.ts
@@ -3,7 +3,11 @@ import {
   analysisViewCaptureFixture,
   analysisViewCaptureEvidence,
 } from "../../../tests/fixtures/analysisView.js";
-import { projectAnalysisView } from "./analysisView.js";
+import {
+  analysisViewRequestSchema,
+  projectAnalysisView,
+} from "./analysisView.js";
+import { projectAnalysisError } from "../analysisErrorProjection.js";
 
 const project = (
   capture = analysisViewCaptureFixture(),
@@ -208,6 +212,39 @@ it("rejects native captures and malformed parents with typed errors", () => {
   ).toMatchObject({ ok: false, error: { _tag: "AnalysisInputError" } });
 });
 
+it.each(["api-surface", "environment-manifest", "environment-state"])(
+  "preserves nested capture-schema diagnostics for %s",
+  (kind) => {
+    const capture = analysisViewCaptureFixture();
+    const result = projectAnalysisView(
+      {
+        evidenceId: `ev_${"a".repeat(64)}`,
+        operation: "inspect_web_network_capture",
+        limitations: [],
+        parameters: { sensitive_value_count: 0 },
+        normalizedResult: {
+          ...capture,
+          artifact: { ...capture.artifact, bytes: "invalid" },
+        },
+      },
+      analysisViewRequestSchema.parse({ kind }),
+    );
+    expect(result.ok).toBe(false);
+    if (result.ok) throw new Error("Expected parent admission to fail");
+    expect(result.error.cause).toMatchObject({ name: "ZodError" });
+    expect(projectAnalysisError(result.error)).toMatchObject({
+      details: {
+        issues: [
+          expect.objectContaining({
+            path: ["source", "normalized_result", "artifact", "bytes"],
+            reason: "invalid_type",
+          }),
+        ],
+      },
+    });
+  },
+);
+
 it("preserves partial response facts and explains unavailable requests", () => {
   const capture = analysisViewCaptureFixture();
   capture.records = capture.records.slice(0, 5);