refactor: improve type specificity with imported types

Replace generic Record<string, any> with specific types:
- cmd.mts: Use MeowFlags type for flagsToFilter parameter
- update-manifest-by-agent.mts: Use Overrides type for value parameter,
  replace Array<[string | symbol, any]> with unknown, and improve
  oldOverrides extraction with proper type narrowing

These changes leverage existing type definitions for better type safety
and IDE autocomplete support.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: jdalton

src/commands/optimize/update-manifest-by-agent.mts

@@ -35,7 +35,7 @@ const depFields = [
 ]
 
 function getEntryIndexes(
-  entries: Array<[string | symbol, any]>,
+  entries: Array<[string | symbol, unknown]>,
   keys: Array<string | symbol>,
 ): number[] {
   return keys
@@ -45,14 +45,14 @@ function getEntryIndexes(
 }
 
 function getLowestEntryIndex(
-  entries: Array<[string | symbol, any]>,
+  entries: Array<[string | symbol, unknown]>,
   keys: Array<string | symbol>,
 ) {
   return getEntryIndexes(entries, keys)?.[0] ?? -1
 }
 
 function getHighestEntryIndex(
-  entries: Array<[string | symbol, any]>,
+  entries: Array<[string | symbol, unknown]>,
   keys: Array<string | symbol>,
 ) {
   return getEntryIndexes(entries, keys).at(-1) ?? -1
@@ -61,19 +61,23 @@ function getHighestEntryIndex(
 function updatePkgJsonField(
   editablePkgJson: EditablePackageJson,
   field: string,
-  value: any,
+  value: Overrides,
 ) {
   const oldValue = editablePkgJson.content[field]
   if (oldValue) {
     // The field already exists so we simply update the field value.
     if (field === PNPM) {
       const isPnpmObj = isObject(oldValue)
       if (hasKeys(value)) {
+        const oldOverrides =
+          isPnpmObj && isObject((oldValue as Record<string, unknown>)[OVERRIDES])
+            ? ((oldValue as Record<string, unknown>)[OVERRIDES] as Overrides)
+            : {}
         editablePkgJson.update({
           [field]: {
             ...(isPnpmObj ? oldValue : {}),
             overrides: {
-              ...(isPnpmObj ? (oldValue as any)[OVERRIDES] : {}),
+              ...oldOverrides,
               ...value,
             },
           },

src/utils/cmd.mts

@@ -27,6 +27,7 @@ import { spawn } from '@socketsecurity/registry/lib/spawn'
 import constants, { FLAG_CONFIG, FLAG_HELP } from '../constants.mts'
 import { camelToKebab } from './strings.mts'
 
+import type { MeowFlags } from '../flags.mts'
 import type { CResult } from '../types.mts'
 
 const { WIN32 } = constants
@@ -41,7 +42,7 @@ const helpFlags = new Set([FLAG_HELP, '-h'])
 /**
  * Convert flag values to array format for processing.
  */
-export function cmdFlagValueToArray(value: any): string[] {
+export function cmdFlagValueToArray(value: unknown): string[] {
   if (typeof value === 'string') {
     return value.trim().split(/, */).filter(Boolean)
   }
@@ -88,7 +89,7 @@ export function cmdPrefixMessage(cmdName: string, text: string): string {
  */
 export function filterFlags(
   argv: readonly string[],
-  flagsToFilter: Record<string, any>,
+  flagsToFilter: MeowFlags,
   exceptions?: string[] | undefined,
 ): string[] {
   const filtered: string[] = []