docs: audit and verify upload content documentation

- Verify claims in content/docs/guides/upload-content.md against codebase
- Clarify 2GB file size limit rationale (client-side hashing)
- Create inventory and verification artifacts
- Log completion of content-audit-agent task

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

docs/agents/task-logs/daily/2026-02-16_03-00-00_content-audit-agent_completed.md

@@ -0,0 +1,13 @@
+# Task Log: Content Audit Agent
+
+- **Date**: 2026-02-16
+- **Agent**: content-audit-agent
+- **Status**: Completed
+- **Outcome**: Verified documentation against code. Minor update to `content/docs/guides/upload-content.md` to clarify client-side limits.
+
+## Summary
+The content audit for `content/docs/guides/upload-content.md` was conducted. All claims were verified against the codebase. No major discrepancies were found. A minor clarification was added regarding the 2GB file size limit being due to `WebTorrent` in-memory hashing.
+
+## Artifacts
+- `artifacts/docs-audit/2026-02-16/inventory.md`
+- `artifacts/docs-audit/2026-02-16/verification.md`