Rename product TallyFlow IoT → TallyFlow Edge across vault

Update product naming in docs, marketing, architecture, use cases,
and capabilities materials. Rename related notes, screenshot folder,
and marketing image filenames. Keep git/repo identifiers (e.g.
tallyflow-iot) and generic industry IoT language unchanged.

TallyFlow/Marketing/Website/Homepage Draft.md

@@ -2,7 +2,7 @@
 
 ## Hero Section
 **Headline:**  
-Unified Asset Intelligence Across Web, Mobile, IoT, and Print
+Unified Asset Intelligence Across Web, Mobile, Edge, and Print
 
 **Subheadline:**  
 RFID and barcode tracking that reduces manual work and gives you real-time visibility across every zone.
@@ -27,7 +27,7 @@ Mobile asset tracking and lightweight inventory. Key features include:
 ### TallyFlow Capture
 Mobile photo + barcode + RFID capture (formerly PhotoTag). Processing tens of thousands of photos per week for major manufacturers like Madix (retail shelving).
 
-### TallyFlow IoT
+### TallyFlow Edge
 Real-time reader management and tag streaming from Impinj, Zebra, and more.
 
 ### TallyFlow Print