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

Extracted DM Relay UI logic and DM Attachment logic into separate binder modules to reduce the size of ProfileModalController.js. Updated file size baseline.

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

docs/agents/task-logs/daily/_completed.md

@@ -1,17 +1,23 @@
-# Content Audit Agent (Daily) - Completed
+# Decompose Agent (Daily) - Completed
 
-**Date:** 2026-02-17
-**Agent:** content-audit-agent
+**Date:** 2026-02-18
+**Agent:** decompose-agent
 **Status:** Success
 
 ## Summary
-Audited `/content/docs/guides/upload-content.md` and `/content/docs/community/community-guidelines.md` against the codebase.
+Decomposed `js/ui/profileModalController.js` by extracting cohesive blocks of logic into helper modules ("binders").
 
 ## Findings
-1.  **Accepted File Types**: `/content/docs/guides/upload-content.md` listed a subset of supported video extensions.
-    *   **Fix**: Updated the doc to match `js/services/s3UploadService.js` (added `.m4v`, `.avi`, `.ogv`, `.ogg`, `.mpd`, `.flv`, `.3gp`).
-2.  **Moderation Configuration**: `js/services/moderationService.js` was using hardcoded constants for blur/autoplay thresholds, ignoring the configuration file mentioned in `/content/docs/community/community-guidelines.md`.
-    *   **Fix**: Refactored `js/services/moderationService.js` to import `DEFAULT_BLUR_THRESHOLD` and `DEFAULT_AUTOPLAY_BLOCK_THRESHOLD` from `../config.js`.
+1.  **Selection**: `js/ui/profileModalController.js` (6258 lines) was the largest grandfathered file.
+2.  **Extraction**:
+    - Extracted DM Relay UI logic to `js/ui/profileModal/ProfileDmRelayBinder.js`.
+    - Extracted DM Attachment & Typing logic to `js/ui/profileModal/ProfileDmAttachmentBinder.js`.
+3.  **Result**:
+    - `js/ui/profileModalController.js` reduced to 5884 lines (reduction of 374 lines).
+    - Updated `scripts/check-file-size.mjs` baseline.
+    - All tests passed.
 
 ## Artifacts
-- (Internal artifacts cleaned up)
+- `context/CONTEXT_1739837127.md`
+- `todo/TODO_1739837127.md`
+- `decisions/DECISIONS_1739837127.md`