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/extractor-jvm.test.ts

@@ -74,7 +74,6 @@ describe.skipIf(!hasJavaRuntime() || !hasJvmExtractorRuntime())("extractor jvm b
     const targetDir = path.join(root, "out");
     fs.mkdirSync(packageDir, { recursive: true });
 
-    // Create a ZIP with some content to trigger progress
     const zipPath = path.join(packageDir, "progress-test.zip");
     const zip = new AdmZip();
     zip.addFile("file1.txt", Buffer.from("Hello World ".repeat(100)));
@@ -108,20 +107,16 @@ describe.skipIf(!hasJavaRuntime() || !hasJvmExtractorRuntime())("extractor jvm b
     expect(result.extracted).toBe(1);
     expect(result.failed).toBe(0);
 
-    // Should have at least preparing, extracting, and done phases
     const phases = new Set(progressUpdates.map((u) => u.phase));
     expect(phases.has("preparing")).toBe(true);
     expect(phases.has("extracting")).toBe(true);
 
-    // Extracting phase should include the archive name
     const extracting = progressUpdates.filter((u) => u.phase === "extracting" && u.archiveName === "progress-test.zip");
     expect(extracting.length).toBeGreaterThan(0);
 
-    // Should end at 100%
     const lastExtracting = extracting[extracting.length - 1];
     expect(lastExtracting.archivePercent).toBe(100);
 
-    // Files should exist
     expect(fs.existsSync(path.join(targetDir, "file1.txt"))).toBe(true);
     expect(fs.existsSync(path.join(targetDir, "file2.txt"))).toBe(true);
   });
@@ -135,7 +130,6 @@ describe.skipIf(!hasJavaRuntime() || !hasJvmExtractorRuntime())("extractor jvm b
     const targetDir = path.join(root, "out");
     fs.mkdirSync(packageDir, { recursive: true });
 
-    // Create two separate ZIP archives
     const zip1 = new AdmZip();
     zip1.addFile("episode01.txt", Buffer.from("ep1 content"));
     zip1.writeZip(path.join(packageDir, "archive1.zip"));
@@ -162,10 +156,8 @@ describe.skipIf(!hasJavaRuntime() || !hasJvmExtractorRuntime())("extractor jvm b
 
     expect(result.extracted).toBe(2);
     expect(result.failed).toBe(0);
-    // Both archive names should have appeared in progress
     expect(archiveNames.has("archive1.zip")).toBe(true);
     expect(archiveNames.has("archive2.zip")).toBe(true);
-    // Both files extracted
     expect(fs.existsSync(path.join(targetDir, "episode01.txt"))).toBe(true);
     expect(fs.existsSync(path.join(targetDir, "episode02.txt"))).toBe(true);
   });