docs: add uninstall/reinstall instructions and WHICHVM note

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -24,6 +24,26 @@ Stream Deck will open and install the plugin automatically.
 
 ---
 
+## Uninstall & Reinstall
+
+If the plugin is not updating or behaving unexpectedly, do a clean reinstall:
+
+1. Remove the plugin folder:
+```bash
+rm -rf ~/Library/Application\ Support/com.elgato.StreamDeck/Plugins/com.pdma.notion-timer.sdPlugin
+```
+
+2. Quit and relaunch Stream Deck.
+
+3. Reinstall the latest version:
+```bash
+curl -sL https://gitea.pdmarf.co.uk/pdm/stream_deck_notion_timer/raw/branch/master/notion-timer.streamDeckPlugin -o /tmp/notion-timer.streamDeckPlugin && open /tmp/notion-timer.streamDeckPlugin
+```
+
+Stream Deck will install the plugin and auto-updates will work from that point on.
+
+---
+
 ## Auto-Updates
 
 Updates are automatic — no action needed from staff.

WHICHVM.md

@@ -0,0 +1,3 @@
+# Which VM
+
+The context for this project's development conversation is on the Mac.