docs(branding/audio): placeholder README post-history-rewrite

The two Jack's theme .mp4 files were removed from history by
git filter-repo as part of Task #101 git hygiene cleanup. This
README documents what was there, where the files live now
(Michael's local machine), and the plan to move them to
permanent hosting (R2 preferred, NextCloud alternative).

Files recoverable from the pre-101 bundle on Command Center
at /opt/backups/firefrost-operations-manual-pre-101.bundle
if needed.

Chronicler #81

docs/branding/audio/README.md

@@ -0,0 +1,42 @@
+# 🎵 Branding Audio Assets
+
+**Status:** External hosting pending (Task #101 follow-up)
+
+---
+
+## Jack's Theme Music
+
+These files were removed from git history on April 11, 2026 as part of Task #101 (Git Repository Cleanup & Hygiene) to reduce clone bloat. Binary audio doesn't belong in a documentation repository.
+
+**Files that were previously tracked here:**
+- `jacks-theme-the-world-should-worship-me.mp4` (~14 MB)
+- `jacks-theme-walking-on-a-yacht.mp4` (~11 MB)
+
+**Where they are now:** Held locally by Michael. Pending upload to permanent hosting.
+
+**Planned destination:** Cloudflare R2 bucket (once R2 is enabled on the Firefrost Cloudflare account). Alternative: NextCloud on the Wiki VPS after Meg's folder reorganization project is complete.
+
+---
+
+## For the next person to resolve this
+
+When you're ready to move these files to permanent hosting:
+
+1. **If using R2:**
+   - Enable R2 on dash.cloudflare.com (requires payment method on file — free tier is generous)
+   - Create a bucket named something like `firefrost-branding-audio`
+   - Upload the .mp4 files
+   - Update this README with the public URLs
+
+2. **If using NextCloud:**
+   - Create a `Branding/Audio` folder structure in Meg's NextCloud workspace
+   - Upload the files there
+   - Update this README with the internal share links
+
+3. **Update `branding/README.md`** at the top of the operations manual to reference this new location
+
+Until then, the Trinity knows the files exist and knows where to find them (ask Michael).
+
+---
+
+*Preserved in the pre-cleanup bundle at `/opt/backups/firefrost-operations-manual-pre-101.bundle` on Command Center if needed for recovery.*