feat: add CLAUDE.md for development guidance and update .gitignore to include .claude directory; refactor AIChatPanel and AppShell components for improved context handling; simplify layout in ProjectDetail, NoteDetailPage, TasksPage, and TimelinePage components

src/renderer/components/layout/AppShell.tsx

@@ -1,14 +1,12 @@
-import { useState, useEffect, useRef, useCallback } from 'react';
+import { useState } from 'react';
 import { Link, useRouterState } from '@tanstack/react-router';
-import { LayoutGroup, motion, useMotionValue, useSpring } from 'framer-motion';
+import { LayoutGroup } from 'framer-motion';
 import {
   House,
   ChartGantt,
   ClipboardCheck,
   FolderKanban,
   PanelLeft,
-  ChevronUp,
-  ChevronDown,
   Settings,
   Sparkles,
   Check,
@@ -71,20 +69,6 @@ interface AppShellProps {
   children: React.ReactNode;
 }
 
-/** Walk up the DOM to find the nearest scrollable ancestor. */
-function findScrollableAncestor(el: Element | null): Element | null {
-  if (!el || el === document.body) return null;
-  const style = window.getComputedStyle(el);
-  const overflowY = style.overflowY;
-  if (
-    (overflowY === 'auto' || overflowY === 'scroll') &&
-    el.scrollHeight > el.clientHeight
-  ) {
-    return el;
-  }
-  return findScrollableAncestor(el.parentElement);
-}
-
 export function AppShell({ children }: AppShellProps) {
   return (
     <FloatingChatProvider>
@@ -132,138 +116,23 @@ function AppShellInner({ children }: AppShellProps) {
 
   const isHomePage = currentPath === '/';
 
-  // Curtain is disabled on home page and on /projects without a selected project
-  const searchObj = routerState.location.search as Record<string, unknown>;
-  const projectId = typeof searchObj['projectId'] === 'string' ? searchObj['projectId'] : undefined;
-  const curtainEnabled =
-    currentPath !== '/' &&
-    !(currentPath === '/projects' && !projectId);
-  const curtainEnabledRef = useRef(curtainEnabled);
-  curtainEnabledRef.current = curtainEnabled;
-
-  // Derive AI chat context from current route
-  const isProjectView = currentPath === '/projects' && !!projectId;
-  const contextType = isProjectView ? 'project' as const : 'global' as const;
-  const projectQuery = trpc.projects.get.useQuery(
-    { id: projectId ?? '' },
-    { enabled: !!projectId },
-  );
-
-  // --- Curtain animation state ---
-  const [curtainOpen, setCurtainOpen] = useState(false);
-  const curtainOpenRef = useRef(false);
-
-  const y = useMotionValue(0);
-  const springY = useSpring(y, { stiffness: 300, damping: 30 });
-
-  const openCurtain = useCallback(() => {
-    curtainOpenRef.current = true;
-    setCurtainOpen(true);
-    y.set(window.innerHeight);
-  }, [y]);
-
-  const closeCurtain = useCallback(() => {
-    curtainOpenRef.current = false;
-    setCurtainOpen(false);
-    y.set(0);
-  }, [y]);
-
-  const toggleCurtain = useCallback(() => {
-    if (curtainOpenRef.current) closeCurtain();
-    else openCurtain();
-  }, [openCurtain, closeCurtain]);
-
-  // Keep curtain position in sync with window height on resize
-  useEffect(() => {
-    const handleResize = () => {
-      if (curtainOpenRef.current) {
-        y.set(window.innerHeight);
-      }
-    };
-    window.addEventListener('resize', handleResize);
-    return () => window.removeEventListener('resize', handleResize);
-  }, [y]);
-
-  // Keyboard shortcut: Cmd/Ctrl+K
-  useEffect(() => {
-    const handleKeyDown = (e: KeyboardEvent) => {
-      if (e.key === 'k' && (e.metaKey || e.ctrlKey)) {
-        e.preventDefault();
-        if (!curtainEnabledRef.current) return;
-        toggleCurtain();
-      }
-    };
-    document.addEventListener('keydown', handleKeyDown);
-    return () => document.removeEventListener('keydown', handleKeyDown);
-  }, [toggleCurtain]);
-
-  // Wheel event: overscroll detection
-  useEffect(() => {
-    const handleWheel = (e: WheelEvent) => {
-      if (!curtainOpenRef.current) {
-        if (!curtainEnabledRef.current) return;
-        // Opening: overscroll UP (deltaY < 0) when content is at top
-        if (e.deltaY < 0) {
-          const scrollable = findScrollableAncestor(e.target as Element);
-          const atTop = !scrollable || scrollable.scrollTop === 0;
-          if (atTop) openCurtain();
-        }
-      } else {
-        // Closing: scroll DOWN (deltaY > 0) while curtain is open
-        if (e.deltaY > 0) {
-          closeCurtain();
-        }
-      }
-    };
-
-    document.addEventListener('wheel', handleWheel, { passive: true });
-    return () => document.removeEventListener('wheel', handleWheel);
-  }, [openCurtain, closeCurtain]);
-
   return (
     <LayoutGroup>
     <SidebarProvider open={open} onOpenChange={handleOpenChange}>
       <AppSidebar
         currentPath={currentPath}
         setTokenDialogOpen={setTokenDialogOpen}
-        onNavClick={closeCurtain}
       />
-      <SidebarInset className="overflow-hidden">
-        {/* AI Chat layer: always mounted behind the content panel */}
-        <AIChatPanel
-          onOpenSettings={() => setTokenDialogOpen(true)}
-          contextType={contextType}
-          projectId={projectId}
-          projectName={projectQuery.data?.name}
-          curtainOpen={isHomePage || curtainOpen}
-          isHomePage={isHomePage}
-        />
-
-        {/* Content panel: slides down to reveal chat (hidden on home — AIChatPanel IS the home page) */}
-        {!isHomePage && (
-          <motion.div
-            style={{ y: springY }}
-            className="absolute inset-0 z-10 flex flex-col bg-background"
-          >
+      <SidebarInset>
+        {isHomePage ? (
+          <AIChatPanel
+            onOpenSettings={() => setTokenDialogOpen(true)}
+            isHomePage
+          />
+        ) : (
+          <div className="relative flex flex-col h-full">
             {children}
-
-            {/* Right-edge vertical affordance (non-interactive) */}
-            <div className={`absolute right-0 top-0 flex items-end justify-center pt-8 pointer-events-none select-none${!curtainEnabled ? ' hidden' : ''}`}>
-              <div className="flex flex-col items-center gap-1.5 pr-2">
-                {curtainOpen ? (
-                  <ChevronDown size={10} />
-                ) : (
-                  <ChevronUp size={10} />
-                )}
-                <span
-                  className="text-[9px] tracking-widest uppercase font-medium"
-                  style={{ writingMode: 'vertical-rl', transform: 'rotate(180deg)' }}
-                >
-                  {curtainOpen ? 'back to app' : 'scrolling up for Adiuva'}
-                </span>
-              </div>
-            </div>
-          </motion.div>
+          </div>
         )}
       </SidebarInset>
     </SidebarProvider>
@@ -321,10 +190,9 @@ function AppShellInner({ children }: AppShellProps) {
 interface AppSidebarProps {
   currentPath: string;
   setTokenDialogOpen: (open: boolean) => void;
-  onNavClick: () => void;
 }
 
-function AppSidebar({ currentPath, setTokenDialogOpen, onNavClick }: AppSidebarProps) {
+function AppSidebar({ currentPath, setTokenDialogOpen }: AppSidebarProps) {
   const { toggleSidebar } = useSidebar();
   const { theme, setTheme } = useTheme();
 
@@ -377,7 +245,7 @@ function AppSidebar({ currentPath, setTokenDialogOpen, onNavClick }: AppSidebarP
                       isActive={isActive}
                       tooltip={label}
                     >
-                      <Link to={to} onClick={onNavClick}>
+                      <Link to={to}>
                         <Icon />
                         <span>{label}</span>
                       </Link>