[security] replace innerHTML in RevertModal.js

Migrated `js/ui/components/RevertModal.js` to safe DOM APIs (`createElement`, `textContent`, `DOMParser`).
Extracted rendering logic to `js/ui/components/revertModalRenderers.js`.
Updated baseline in `scripts/check-innerhtml.mjs` (0 remaining usages).
Updated tests to mock DOMParser.

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

docs/agents/task-logs/daily/2026-02-14_17-35-00_innerhtml-migration-agent_completed.md

@@ -0,0 +1,30 @@
+# Agent Completion Log
+
+**Agent:** `innerhtml-migration-agent`
+**Date:** 2026-02-14
+**Cadence:** Daily
+
+## Task Summary
+Migrated `js/ui/components/RevertModal.js` from `innerHTML` to safe DOM APIs. This file had the highest usage (10 assignments).
+
+## Actions Taken
+1.  **Refactoring:**
+    *   Replaced all `innerHTML` assignments with `document.createElement`, `textContent`, and `replaceChildren`.
+    *   Switched `load()` and `reset()` logic to use `DOMParser` for safe parsing of trusted templates.
+    *   Extracted complex rendering logic (NIP-71 media metadata, variants, tracks) to a new module `js/ui/components/revertModalRenderers.js` to manage file size complexity.
+
+2.  **Verification:**
+    *   Updated `tests/modal-accessibility.test.mjs` to mock `DOMParser` in the test environment.
+    *   Ran `npm run lint` and `npm run test:unit` successfully.
+    *   Verified `innerHTML` usage for the file dropped to 0.
+
+3.  **Baseline Update:**
+    *   Updated `scripts/check-innerhtml.mjs` to remove `RevertModal.js` from the tracking list.
+
+## Artifacts
+*   `js/ui/components/RevertModal.js`
+*   `js/ui/components/revertModalRenderers.js`
+*   `scripts/check-innerhtml.mjs`
+*   `tests/modal-accessibility.test.mjs`
+*   `decisions/DECISIONS_2026-02-14_17-35-00.md`
+*   `test_logs/TEST_LOG_2026-02-14_17-35-00.md`