[decompose] extract ProfileHashtagController from js/ui/profileModalController.js

Extracts all hashtag preference related logic into a new controller
`js/ui/profileModal/ProfileHashtagController.js` to reduce the size of `js/ui/profileModalController.js` and improve maintainability.

- Moves `normalizeHashtagTag`, `formatHashtagTag`, `getResolvedHashtagPreferences`, `setHashtagStatus`, `refreshHashtagBackgroundStatus`, `populateHashtagPreferences`, `renderHashtagList`, `sanitizeHashtagList`, `createHashtagListItem`, `persistHashtagPreferences`, `handleAddHashtagPreference`, `handleRemoveHashtagPreference`, `handleHashtagPreferencesChange`, `describeHashtagPreferencesError`.
- Updates `ProfileModalController` to delegate to `ProfileHashtagController`.
- Adds delegate getters/methods in `ProfileModalController` to maintain backward compatibility for tests.
- Reduces `js/ui/profileModalController.js` by ~600 lines.
- Updates file size baseline in `scripts/check-file-size.mjs`.

Passes `npm run lint` and `npm run test:unit`.

Co-authored-by: PR0M3TH3AN <[email protected]>

js/ui/profileModal/ProfileHashtagController.js

@@ -185,10 +185,10 @@ export class ProfileHashtagController {
   }
 
   clearHashtagInputs() {
-    if (this.hashtagInterestInput instanceof HTMLInputElement) {
+    if (this.hashtagInterestInput && typeof this.hashtagInterestInput.value === "string") {
       this.hashtagInterestInput.value = "";
     }
-    if (this.hashtagDisinterestInput instanceof HTMLInputElement) {
+    if (this.hashtagDisinterestInput && typeof this.hashtagDisinterestInput.value === "string") {
       this.hashtagDisinterestInput.value = "";
     }
   }
@@ -385,10 +385,10 @@ export class ProfileHashtagController {
       : this.hashtagDisinterestInput;
 
     const rawValue =
-      input instanceof HTMLInputElement ? input.value || "" : "";
+      input && typeof input.value === "string" ? input.value || "" : "";
     const normalized = this.normalizeHashtagTag(rawValue);
 
-    if (!(input instanceof HTMLInputElement)) {
+    if (!(input && typeof input.value === "string")) {
       return { success: false, reason: "missing-input" };
     }
 

repro.mjs

@@ -1,19 +0,0 @@
-class Helper {
-  constructor() {
-    this.prop = null;
-  }
-}
-
-class Controller {
-  constructor() {
-    this.helper = new Helper();
-  }
-  get prop() { return this.helper.prop; }
-}
-
-const c = new Controller();
-try {
-  c.prop.value = 'test';
-} catch (e) {
-  console.log('Error:', e.message);
-}

repro_undefined.mjs

@@ -1,19 +0,0 @@
-class Helper {
-  constructor() {
-    // prop not defined
-  }
-}
-
-class Controller {
-  constructor() {
-    this.helper = new Helper();
-  }
-  get prop() { return this.helper.prop; }
-}
-
-const c = new Controller();
-try {
-  c.prop.value = 'test';
-} catch (e) {
-  console.log('Error:', e.message);
-}