Move release manifest into lib/ to fix dependency direction

Architecture review (hai-architecture / APoSD) of the shipped redesign found one
structural smell: the shared lib/ layer imported the release manifest from
components/ — data in the presentation layer, dependency pointing the wrong way.
- move components/release-links.generated.ts -> lib/; update the four importers
  and the README. lib/ no longer imports from components/.
- downloads.ts: reuse PlatformDownload["id"] instead of re-declaring the union.

No behavior change (download counter + tracked hrefs identical); build + e2e 12/12.

landing/README.md

@@ -6,7 +6,7 @@ Next.js landing page for the AgentCompany desktop release lane.
 
 | Surface | Source |
 |---|---|
-| Download cards | `landing/components/release-links.generated.ts` |
+| Download cards | `landing/lib/release-links.generated.ts` |
 | Platform FAQ | `landing/lib/platform-support.ts` |
 | Hero, How It Works, software JSON-LD features | `landing/lib/product-narrative.ts` |
 | Runtime download URLs | generated from `scripts/generate-landing-release-links.mjs` |

landing/components/sections/download-section.tsx

@@ -5,7 +5,7 @@ import { Download } from "reicon-react/icons/Download";
 import { Container } from "../ui/container";
 import { Reveal } from "../ui/reveal";
 import { SectionHeading } from "../ui/section-heading";
-import { platformDownloads, releaseVersion } from "../release-links.generated";
+import { platformDownloads, releaseVersion } from "../../lib/release-links.generated";
 import { DOWNLOAD_COUNT_SEED, getTrackedDownloadHref } from "../../lib/downloads";
 
 export function DownloadSection() {

landing/lib/downloads.ts

@@ -1,11 +1,11 @@
-import { platformDownloads, type PlatformDownloadAsset } from "../components/release-links.generated";
+import { platformDownloads, type PlatformDownload, type PlatformDownloadAsset } from "./release-links.generated";
 
 export const DOWNLOAD_COUNT_SEED = 13674;
 export const DOWNLOAD_DEDUP_WINDOW_HOURS = 24;
 export const DOWNLOAD_DEDUP_WINDOW_MS = DOWNLOAD_DEDUP_WINDOW_HOURS * 60 * 60 * 1000;
 
 export type ReleaseDownloadAsset = PlatformDownloadAsset & {
-  platformId: "macos" | "windows" | "linux";
+  platformId: PlatformDownload["id"];
   platformTitle: string;
 };
 

landing/lib/platform-support.ts

@@ -3,7 +3,7 @@ import {
   type PlatformDownload,
   type PlatformDownloadAsset,
   type ReleaseArchitecture,
-} from "../components/release-links.generated";
+} from "./release-links.generated";
 
 const ARCHITECTURE_ORDER: ReleaseArchitecture[] = ["arm64", "x64", "x86"];
 

landing/lib/product-narrative.ts

@@ -1,4 +1,4 @@
-import { releaseVersion } from "../components/release-links.generated";
+import { releaseVersion } from "./release-links.generated";
 
 export const landingHeroNarrative = {
   eyebrow: "AgentCompany Desktop",