chore(ai): document js/ui/components/VideoModal.js

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

context/CONTEXT_2026-02-13_docs-code-investigator.md

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+# Context for Documentation: js/ui/components/VideoModal.js
+
+- **Agent:** docs-code-investigator (daily scheduler)
+- **Date:** 2026-02-13
+- **Target File:** `js/ui/components/VideoModal.js`
+- **Line Count:** 6284 lines
+- **Reason for Selection:**
+  - Identified as one of the largest source files in the codebase (ranking #2 after `profileModalController.js`).
+  - No existing overview documentation found (`docs/VideoModal-overview.md` is missing).
+  - Contains critical UI logic for video playback, menu rendering, and interaction handling.
+  - High complexity with multiple imported controllers (`CommentsController`, `ReactionsController`, etc.).
+
+## Plan
+1. Analyze the file structure to understand the `VideoModal` class and its main execution flows.
+2. Create `docs/VideoModal-overview.md` to document the high-level architecture, public API, and key invariants.
+3. Add JSDoc to the exported `VideoModal` class and its primary methods (`constructor`, `open`, `close`).
+4. Add inline comments for complex logic blocks (e.g., rendering, data fetching).
+5. Verify changes with `npm run lint` and `npm run test:unit` (to ensure no regressions).
+
+## Goal
+Improve maintainability and developer understanding of this critical UI component by providing clear documentation and entry points.