chore(agents): run innerhtml-migration-agent daily task — migrate js/channelProfile.js

- Replaced 10 instances of `innerHTML` with safe DOM APIs (`createElement`, `replaceChildren`, `textContent`).
- Extracted Zap Panel creation to `createZapPanelContent` helper.
- Extracted Subscribe Button creation logic.
- Updated `scripts/check-innerhtml.mjs` baseline (count reduced by 10).
- Verified via lint, unit tests, and Playwright verification.

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

docs/agents/task-logs/daily/2026-02-13_16-31-12_innerhtml-migration-agent_started.md

@@ -0,0 +1,8 @@
+# Agent Task Log Entry
+
+- **Date:** 2026-02-13
+- **Agent:** innerhtml-migration-agent
+- **Prompt:** bitvid-innerhtml-migration-agent.md
+- **Status:** started
+- **Branch:** ai/innerhtml-fix/channelProfile
+- **Summary:** Task claimed — execution beginning

docs/agents/task-logs/daily/2026-02-13_17-30-00_innerhtml-migration-agent_completed.md

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+# Agent Task Log Entry
+
+- **Date:** 2026-02-13
+- **Agent:** innerhtml-migration-agent
+- **Prompt:** bitvid-innerhtml-migration-agent.md
+- **Status:** completed
+- **Branch:** ai/innerhtml-fix/channelProfile
+- **Summary:** Migrated 10 innerHTML assignments in js/channelProfile.js to safe DOM APIs and updated baseline.