chore: remove all source code comments and internal artifacts

Strip every comment from the source (parsed with the TypeScript compiler so
strings, template literals, regex literals and JSX are never touched), and drop
internal/working artifacts that do not belong in the public repository
(design mockups, internal analysis docs, a stray backup file and an old log).
No functional change: build is green, the full test suite passes.

tests/update-restart-resume.test.ts

@@ -10,14 +10,6 @@ import { createStoragePaths, emptySession, loadSession } from "../src/main/stora
 import { shutdownItemLogs } from "../src/main/item-log";
 import { shutdownPackageLogs } from "../src/main/package-log";
 
-// Regression for the reported symptom: after an app update while downloading,
-// packages that were in flight do not continue after the restart.
-//
-// Root cause: installUpdate() called manager.stop(), whose abort continuation
-// marks the in-flight item "cancelled"/"Gestoppt". autoResumeOnStart only
-// resumes "queued"/"reconnect_wait" items, so after the silent-install relaunch
-// the download silently stays parked instead of continuing.
-
 const tempDirs: string[] = [];
 const originalFetch = globalThis.fetch;
 
@@ -47,9 +39,6 @@ async function waitFor(predicate: () => boolean, timeoutMs = 20000): Promise<voi
   }
 }
 
-/** Starts an HTTP server that trickles bytes forever so a download stays
- *  actively "downloading" until it is aborted. Returns the direct URL plus a
- *  stop() that tears down all open responses and the server. */
 async function startTricklingServer(): Promise<{ directUrl: string; stop: () => Promise<void> }> {
   const openTimers = new Set<NodeJS.Timeout>();
   const openResponses = new Set<http.ServerResponse>();
@@ -68,7 +57,6 @@ async function startTricklingServer(): Promise<{ directUrl: string; stop: () =>
       try {
         res.write(Buffer.alloc(16 * 1024, 9));
       } catch {
-        // socket gone
       }
     }, 100);
     openTimers.add(timer);
@@ -94,7 +82,6 @@ async function startTricklingServer(): Promise<{ directUrl: string; stop: () =>
       try {
         res.destroy();
       } catch {
-        // ignore
       }
     }
     openResponses.clear();
@@ -157,7 +144,6 @@ describe("update restart resume", () => {
       const reloaded = loadSession(paths);
       const item = Object.values(reloaded.items)[0];
       expect(item).toBeTruthy();
-      // Documents the loss of resumability: cancelled items are not auto-resumed.
       expect(item.status).toBe("cancelled");
     } finally {
       await serverStop();
@@ -169,7 +155,6 @@ describe("update restart resume", () => {
     tempDirs.push(root);
     const { manager, paths, serverStop } = await driveActiveDownload(root);
     try {
-      // Mirrors AppController.installUpdate(): park downloads, then sync-persist.
       manager.stop({ parkForRestart: true });
       manager.persistNowSync();
       await waitFor(() => (manager as unknown as { activeTasks: Map<string, unknown> }).activeTasks.size === 0);
@@ -178,7 +163,6 @@ describe("update restart resume", () => {
       const reloaded = loadSession(paths);
       const item = Object.values(reloaded.items)[0];
       expect(item).toBeTruthy();
-      // The package/item must survive AND be resumable so auto-resume continues it.
       expect(Object.keys(reloaded.packages).length).toBe(1);
       expect(item.status).toBe("queued");
     } finally {