diff --git a/00_index.md b/00_index.md
index d818c2a..08fce4c 100644
--- a/00_index.md
+++ b/00_index.md
@@ -1,5 +1,5 @@
 # 00 — Master Index
-> Last updated: 2026-06-11
+> Last updated: 2026-06-12
 > Quick-reference card for Claude. Read this first, then load specific files only as needed.
 
 ---
@@ -124,6 +124,20 @@
 
 **Sync**: Obsidian Git plugin on PC → Gitea `spendlik/obsidian-vault`; MGit on Android
 
+### 📋 Vault Quick Reference — Known File Paths
+
+| File | Purpose |
+|---|---|
+| `Tasks.md` | Live task dashboard |
+| `05 Resources/Possible Purchases.md` | Purchase wishlist — add items here directly |
+| `05 Resources/3D Print Queue.md` | 3D print job queue |
+| `05 Resources/Proxmox LXC Templates.md` | LXC template reference |
+| `03 Areas/Personal Admin.md` | Personal admin tasks (car, devices, subscriptions) |
+| `03 Areas/Homelab.md` | Homelab recurring tasks |
+| `03 Areas/Main PC.md` | CachyOS main PC tasks |
+
+> 💡 For purchases or print queue additions, read the file first, append the item, write back. No directory exploration needed.
+
 ---
 
 ## 🛠️ Automation Stack