chore: sync the frontend template from 4dc033c to 8157ad4

The product was materialized from the template at `4dc033c` and has stayed
on it through 43 template commits, so it was missing all three rounds of
adapter remediation — including files it never had, such as the shared
`abortable-operation` primitive and the `exact-snapshot` decoder that
later fixes are written against. Taking only the newest round was not
possible for that reason: the delta is coherent only as a whole.

The product had not touched `src/adapters` at all since materialization,
so the 140-file delta applied with a three-way merge and no conflicts.
`package.json` was the single overlap and merged cleanly: the product owns
`name`, the template contributed `check:adapter-inventory`,
`check:remediation-ledger` and the image-resolve-signal type fixture.
All 24 product-owned files — README, index.html, CI workflow, i18n
catalog, home page, generated schemas, evidence scripts, component and
visual snapshots — are byte-identical to `main`.

`template.lock.json` now pins the synced revision and tree.

Verified in this repository, not inherited from the template: six type
projects, lint, nine gates (adapter inventory, remediation ledger,
registries, diagnostics, realtime boundaries, architecture, browser
file/storage boundaries, optional recipes, documentation), the production
build, and 2,054 of 2,073 tests. The 19 failures are all in
`tests/unit/ci-artifact-contract.test.ts` and are the same pre-existing
sandbox RLIMIT, EMFILE, umask and `/tmp` permission behaviour the template
records; four suites that failed once under parallel load pass in
isolation.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/adapters/diagnostics/bounded-diagnostics.ts

@@ -6,11 +6,15 @@ import {
   type DiagnosticRecordInput,
 } from "../../contracts/diagnostics.ts";
 import { projectTelemetryEvent } from "../../contracts/telemetry.ts";
+import { assertBoundedCapacity } from "../telemetry/best-effort-telemetry.ts";
 
 export const noOpDiagnostics: DiagnosticsPort = Object.freeze({
   record() {},
 });
 
+/** N-11. Documented absolute ceiling for bounded in-memory evidence. */
+export const MAX_DIAGNOSTIC_ENTRIES = 10_000;
+
 export function createDiagnosticsAdapter(
   options: Readonly<{
     maxEntries?: number;
@@ -18,7 +22,11 @@ export function createDiagnosticsAdapter(
     sink?: (record: DiagnosticRecord) => void;
   }> = {},
 ) {
-  const maxEntries = Math.max(1, options.maxEntries ?? 100);
+  const maxEntries = assertBoundedCapacity(
+    options.maxEntries ?? 100,
+    MAX_DIAGNOSTIC_ENTRIES,
+    "diagnostics maxEntries",
+  );
   const entries: DiagnosticRecord[] = [];
   const droppedReasons = new Map<string, number>();