chore: add pnpm catalog and @fileoverview headers

**Catalog Implementation** (High Impact)
- Created pnpm catalog in pnpm-workspace.yaml with 33 core dependencies
- Migrated package.json to use catalog: for shared packages
- Improves version consistency across 132+ npm override packages
- Catalog includes: build tools (Babel, esbuild, TypeScript), testing (vitest), linting (Biome, ESLint), Socket packages, and common utilities

**Documentation Headers**
- Added @fileoverview headers to 23 files (test files + type declarations)
- Test files: 14 npm package override tests
- Scripts: 9 type declaration files

**Impact**:
- Prevents version drift across monorepo workspaces
- Ensures consistent tooling versions for all packages
- Improves maintainability with documented file purposes

Part of project-wide standardization effort.

Author: jdalton

package.json

@@ -41,14 +41,14 @@
     "validate-packages": "node scripts/testing/validate-package-tests.mjs"
   },
   "devDependencies": {
-    "@babel/core": "7.28.4",
-    "@babel/generator": "7.28.3",
-    "@babel/parser": "7.28.4",
-    "@babel/traverse": "7.28.4",
-    "@babel/types": "7.28.4",
-    "@biomejs/biome": "2.2.4",
+    "@babel/core": "catalog:",
+    "@babel/generator": "catalog:",
+    "@babel/parser": "catalog:",
+    "@babel/traverse": "catalog:",
+    "@babel/types": "catalog:",
+    "@biomejs/biome": "catalog:",
     "@biomejs/js-api": "3.0.0",
-    "@biomejs/wasm-nodejs": "2.2.4",
+    "@biomejs/wasm-nodejs": "catalog:",
     "@dotenvx/dotenvx": "1.49.0",
     "@eslint/compat": "1.3.2",
     "@eslint/js": "9.35.0",
@@ -59,11 +59,11 @@
     "@npmcli/package-json": "7.0.0",
     "@npmcli/promise-spawn": "8.0.3",
     "@socketregistry/is-unicode-supported": "workspace:*",
-    "@socketregistry/packageurl-js": "1.3.5",
+    "@socketregistry/packageurl-js": "catalog:",
     "@socketregistry/scripts": "file:scripts",
-    "@socketsecurity/lib": "3.1.3",
+    "@socketsecurity/lib": "catalog:",
     "@types/fs-extra": "11.0.4",
-    "@types/node": "24.9.2",
+    "@types/node": "catalog:",
     "@types/normalize-package-data": "2.4.4",
     "@types/npm-package-arg": "6.1.4",
     "@types/npmcli__package-json": "4.0.4",
@@ -75,45 +75,45 @@
     "@types/validate-npm-package-name": "4.0.2",
     "@types/which": "3.0.4",
     "@typescript/native-preview": "7.0.0-dev.20250920.1",
-    "@vitest/coverage-v8": "4.0.3",
-    "@vitest/ui": "4.0.3",
+    "@vitest/coverage-v8": "catalog:",
+    "@vitest/ui": "catalog:",
     "@yarnpkg/extensions": "2.0.6",
     "@zkochan/js-yaml": "0.0.10",
     "browserslist": "4.26.3",
     "c8": "10.1.3",
     "cacache": "20.0.1",
     "clipboardy": "4.0.0",
     "debug": "^4.4.3",
-    "del": "8.0.1",
-    "del-cli": "6.0.0",
+    "del": "catalog:",
+    "del-cli": "catalog:",
     "dev-null-cli": "2.0.0",
     "didyoumean2": "7.0.4",
-    "esbuild": "0.25.11",
-    "eslint": "9.35.0",
+    "esbuild": "catalog:",
+    "eslint": "catalog:",
     "eslint-import-resolver-typescript": "4.4.4",
-    "eslint-plugin-import-x": "4.16.1",
-    "eslint-plugin-n": "17.23.1",
-    "eslint-plugin-sort-destructure-keys": "2.0.0",
-    "eslint-plugin-unicorn": "56.0.1",
+    "eslint-plugin-import-x": "catalog:",
+    "eslint-plugin-n": "catalog:",
+    "eslint-plugin-sort-destructure-keys": "catalog:",
+    "eslint-plugin-unicorn": "catalog:",
     "eta": "3.5.0",
-    "fast-glob": "3.3.3",
+    "fast-glob": "catalog:",
     "fast-sort": "3.4.1",
     "fs-extra": "11.3.1",
     "get-east-asian-width": "1.3.0",
     "globals": "16.4.0",
-    "husky": "9.1.7",
+    "husky": "catalog:",
     "js-yaml": "npm:@zkochan/[email protected]",
     "libnpmpack": "9.0.9",
-    "magic-string": "0.30.17",
+    "magic-string": "catalog:",
     "make-fetch-happen": "15.0.2",
     "minimatch": "9.0.5",
-    "normalize-package-data": "8.0.0",
-    "npm-package-arg": "13.0.0",
+    "normalize-package-data": "catalog:",
+    "npm-package-arg": "catalog:",
     "npm-run-all2": "8.0.4",
     "out-url": "1.2.2",
-    "pacote": "21.0.1",
+    "pacote": "catalog:",
     "read-yaml-file": "2.1.0",
-    "semver": "7.7.2",
+    "semver": "catalog:",
     "source-map-support": "0.5.21",
     "spdx-correct": "3.2.0",
     "spdx-expression-parse": "4.0.0",
@@ -123,15 +123,15 @@
     "trash": "10.0.0",
     "tsx": "4.20.5",
     "type-coverage": "2.29.7",
-    "typescript": "5.9.2",
-    "typescript-eslint": "8.44.1",
+    "typescript": "catalog:",
+    "typescript-eslint": "catalog:",
     "update-browserslist-db": "1.1.3",
-    "validate-npm-package-name": "6.0.2",
-    "vitest": "4.0.3",
+    "validate-npm-package-name": "catalog:",
+    "vitest": "catalog:",
     "which": "5.0.0",
     "yargs-parser": "22.0.0",
-    "yoctocolors-cjs": "2.1.3",
-    "zod": "4.1.12"
+    "yoctocolors-cjs": "catalog:",
+    "zod": "catalog:"
   },
   "engines": {
     "pnpm": ">=10.16.0",