feat(chat): migrate history list to @tanstack/react-virtual with deterministic mobile history loading

- Replace virtua with @tanstack/react-virtual for chat history on all
  surfaces: bottom anchoring (anchorTo: end), key-stable prepend
  preservation, and native iOS touch/momentum deferral live in the core
- Patch virtual-core to clamp the render range to real scroll bounds
  during transient adjustments
- Rows render in normal flow inside a translated wrapper so sticky user
  headers keep working; measurement snapshots cached per session
- Pre-write container height in scrollToFn so the browser cannot clamp
  anchor corrections to the stale height; hold the prepend anchor for up
  to 180 frames on mobile while fresh rows settle (cancelled by user
  input; desktop relies on core anchoring alone)
- Adaptive row-size estimate from per-session measured averages; disable
  reveal fade-in for virtualized history rows
- Mobile loads older history only through an explicit localized top
  button: no scroll-position trigger and no post-mount background
  prepend, so every insert happens from a resting state; a quiet-window
  hold defers any stray prepend commit while a touch gesture is active
- Desktop/VS Code keep the seamless scroll-up trigger and progressive
  background prepend

bun.lock

@@ -97,7 +97,7 @@
     },
     "packages/electron": {
       "name": "@openchamber/electron",
-      "version": "1.13.8",
+      "version": "1.13.9",
       "dependencies": {
         "@openchamber/web": "workspace:*",
         "electron-context-menu": "^4.1.2",
@@ -133,7 +133,7 @@
     },
     "packages/ui": {
       "name": "@openchamber/ui",
-      "version": "1.13.8",
+      "version": "1.13.9",
       "dependencies": {
         "@aparajita/capacitor-secure-storage": "^8.0.0",
         "@base-ui/react": "^1.4.0",
@@ -171,6 +171,7 @@
         "@pierre/diffs": "1.3.0-beta.6",
         "@replit/codemirror-vim": "^6.3.0",
         "@simplewebauthn/browser": "13.3.0",
+        "@tanstack/react-virtual": "3.14.5",
         "@xenova/transformers": "^2.17.2",
         "@zumer/snapdom": "^2.12.0",
         "beautiful-mermaid": "^1.1.3",
@@ -236,7 +237,7 @@
     },
     "packages/vscode": {
       "name": "openchamber",
-      "version": "1.13.8",
+      "version": "1.13.9",
       "dependencies": {
         "@openchamber/ui": "workspace:*",
         "@opencode-ai/sdk": "1.17.12",
@@ -259,7 +260,7 @@
     },
     "packages/web": {
       "name": "@openchamber/web",
-      "version": "1.13.8",
+      "version": "1.13.9",
       "bin": {
         "openchamber": "./bin/cli.js",
       },
@@ -345,6 +346,9 @@
       },
     },
   },
+  "patchedDependencies": {
+    "@tanstack/virtual-core@3.17.3": "patches/@tanstack%2Fvirtual-core@3.17.3.patch",
+  },
   "overrides": {
     "@codemirror/language": "6.12.2",
     "@codemirror/view": "6.39.13",
@@ -1296,6 +1300,10 @@
 
     "@tailwindcss/postcss": ["@tailwindcss/postcss@4.2.1", "", { "dependencies": { "@alloc/quick-lru": "^5.2.0", "@tailwindcss/node": "4.2.1", "@tailwindcss/oxide": "4.2.1", "postcss": "^8.5.6", "tailwindcss": "4.2.1" } }, "sha512-OEwGIBnXnj7zJeonOh6ZG9woofIjGrd2BORfvE5p9USYKDCZoQmfqLcfNiRWoJlRWLdNPn2IgVZuWAOM4iTYMw=="],
 
+    "@tanstack/react-virtual": ["@tanstack/react-virtual@3.14.5", "", { "dependencies": { "@tanstack/virtual-core": "3.17.3" }, "peerDependencies": { "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0", "react-dom": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0" } }, "sha512-4EKRXh7zBLkbKbFmG3AUVkircuHd+7OdT1pocJSepxtfBd3qnrJgJ5rtPkRYyo9fmyVb2+pI2xPy5oYvMLQy6A=="],
+
+    "@tanstack/virtual-core": ["@tanstack/virtual-core@3.17.3", "", {}, "sha512-8Np/TFELpI0ySuJoVmjvOrQYXH/8sTX0Biv9szhFhY39xOdAAY+smrMxjxOum/ux3eM8MUJQsEJ0/R0UpvC8dw=="],
+
     "@textlint/ast-node-types": ["@textlint/ast-node-types@15.5.2", "", {}, "sha512-fCaOxoup5LIyBEo7R1oYWE7V4bSX0KQeHh66twon9e9usaLE3ijgF8QjYsR6joCssdeCHVd0wHm7ppsEyTr6vg=="],
 
     "@textlint/linter-formatter": ["@textlint/linter-formatter@15.5.2", "", { "dependencies": { "@azu/format-text": "^1.0.2", "@azu/style-format": "^1.0.1", "@textlint/module-interop": "15.5.2", "@textlint/resolver": "15.5.2", "@textlint/types": "15.5.2", "chalk": "^4.1.2", "debug": "^4.4.3", "js-yaml": "^4.1.1", "lodash": "^4.17.23", "pluralize": "^2.0.0", "string-width": "^4.2.3", "strip-ansi": "^6.0.1", "table": "^6.9.0", "text-table": "^0.2.0" } }, "sha512-jAw7jWM8+wU9cG6Uu31jGyD1B+PAVePCvnPKC/oov+2iBPKk3ao30zc/Itmi7FvXo4oPaL9PmzPPQhyniPVgVg=="],