diff --git a/.specstory/history/2025-08-19_02-35Z-what-is-git-fast-forward.md b/.specstory/history/2025-08-19_02-35Z-what-is-git-fast-forward.md
index e7714f8..9e2cedd 100644
--- a/.specstory/history/2025-08-19_02-35Z-what-is-git-fast-forward.md
+++ b/.specstory/history/2025-08-19_02-35Z-what-is-git-fast-forward.md
@@ -190,3 +190,48 @@ This would replace your local network origin with the Tailscale one, so `git pul
 
 ---
 
+_**User**_
+
+how to set Tailscale/main as upstream?
+
+---
+
+_**Assistant**_
+
+To set `Tailscale/main` as your upstream, use this command:
+
+```bash
+git branch --set-upstream-to=Tailscale/main
+```
+
+**Or if you want to be more explicit about which branch:**
+```bash
+git branch --set-upstream-to=Tailscale/main main
+```
+
+**After setting upstream, you can:**
+- Just use `git pull` (will pull from Tailscale/main)
+- Just use `git push` (will push to Tailscale/main)
+
+**To verify it worked:**
+```bash
+git branch -vv
+```
+
+You should see something like:
+```
+* main abc1234 [Tailscale/main] Your commit message
+```
+
+**Alternative one-liner:**
+If you haven't pushed your branch yet, you can also do:
+```bash
+git push -u Tailscale main
+```
+
+This pushes your branch and sets the upstream in one command.
+
+**Note:** Make sure you're on the `main` branch first. If you're on a different branch, either switch to main with `git checkout main` or specify your current branch name in the command.
+
+---
+
diff --git a/blends/SPOE_C.blend b/blends/SPOE_C.blend
index 4e77698..ea2e98b 100644
--- a/blends/SPOE_C.blend
+++ b/blends/SPOE_C.blend
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:309ccce0daf67b66e78b7ba4de1f620529d4d96bbcd903aeffd2ff26169f911d
-size 406081
+oid sha256:2695d36ff654fb62127ffee74bb1c8b67c45255a05416f6f760874e5c252986e
+size 420841