built the sidebar tree view for Tab Rot. Made a decayView.ts with a DecayTreeProvider that implements VS Code s TreeDataProvider interface. It pulls all decayed tabs from the tracker, sorts them by stage with the worst rot first, and renders each one as a DecayItem with the filename as the label, a stage emoji + name as the description (like “🍂 Faded” or “💀 Cracked”), and a tooltip showing how long it’s been since the file was last visited. Each item gets a stage-specific SVG icon and clicking it’s opens the file in the editor.I also created four littl SVG leaf icons in resources/icons/ — a green one for fresh tabs, orange-yellow for faded, brown with dots for grainy, and a dark cracked one for stage 3. They’re just simple leaf shapes but the color coding makes the sidebar immediately scannable.Wired the tree provider into extension.ts and registered it under the view ID tabRot.decayedTabs in package.json. The view lives in the Explorer sidebar and only shows up when there are actually decayed tabs, thanks to a context key tabRot.hasDecayedTabs that I set on every refresh. So if all your tabs are fresh, the sidebar section disappears completely instead of sitting there empty and sad.Added a tabRot.openDecayedTab command that the tree items use to open files when clicked. Since opening the file triggers onDidChangeActiveTextEditor, the tab gets touched and restored automatically, complete with the green flash animation from Phase 5. So the flow is: see rotting tab in sidebar → click it → file opens → green flash → tab is fresh again. Very satisfying.I also updated all the refresh calls so the sidebar stays in sync — it refreshes after every tab touch, close, restore command, and interval tick. And the showDecayedTabs command from Phase 4 now actually works because the view is registered, so that unhandled rejection error is gone.