refactor(window): drop shell tab layer

docs/specs/multi-window-cleanup/plan.md

@@ -0,0 +1,7 @@
+# Multi-Window Cleanup Plan
+
+1. Rename renderer entry from `shell` to `browser` and delete tooltip overlay.
+2. Convert YoBrowser from single-window multi-tab to multi-window single-page.
+3. Remove tab shortcuts and tab UI, keep only multi-window behavior.
+4. Short-circuit tab-dependent legacy MCP helpers.
+5. Run format, i18n, lint, typecheck, targeted tests, and build.

docs/specs/multi-window-cleanup/spec.md

@@ -0,0 +1,48 @@
+# Multi-Window Cleanup Spec
+
+## Goal
+
+Remove the last shell and multi-tab browser architecture remnants and converge on a clean
+multi-window model:
+
+- app windows render the chat UI directly
+- browser windows render dedicated browser chrome directly
+- each browser window owns exactly one page `WebContentsView`
+- tooltip overlay is removed completely
+
+## Decisions
+
+### Window model
+
+- `WindowPresenter` exposes explicit app-window and browser-window creation APIs.
+- `createShellWindow` remains only as a deprecated compatibility wrapper.
+- Browser windows load `src/renderer/browser/index.html`.
+- Chat windows load `src/renderer/index.html#/chat`.
+
+### YoBrowser model
+
+- `YoBrowserPresenter` manages multiple browser windows.
+- Each browser window has one browser chrome renderer and one page view.
+- There is no tab list, no tab activation, no tab reordering, and no tab shortcuts.
+- Browser APIs use `windowId` for addressing.
+
+### Renderer model
+
+- The old `src/renderer/shell` entry is renamed to `src/renderer/browser`.
+- Browser chrome keeps only:
+  - window controls
+  - address bar
+  - navigation controls
+  - create-new-browser-window action
+- Tooltip overlay entry/runtime is deleted.
+
+### Legacy handling
+
+- `conversationSearchServer` and `meetingServer` are intentionally disabled until they are rebuilt
+  against the window-native architecture.
+- Deprecated browser tool names remain as thin aliases only in the handler.
+
+## Non-Goals
+
+- Rebuilding every legacy session/thread abstraction in this pass.
+- Introducing new UI entities beyond the required browser-window state.

docs/specs/multi-window-cleanup/tasks.md

@@ -0,0 +1,11 @@
+# Multi-Window Cleanup Tasks
+
+- [x] Move renderer entry from `shell` to `browser`
+- [x] Delete tooltip overlay entry from renderer tree
+- [ ] Update build aliases and inputs
+- [ ] Simplify browser renderer chrome
+- [ ] Rewrite YoBrowser window model
+- [ ] Split app-window and browser-window creation
+- [ ] Remove tab shortcuts from main/settings
+- [ ] Disable legacy MCP tab helpers
+- [ ] Verify format, i18n, lint, typecheck, tests, build

electron.vite.config.ts

@@ -64,7 +64,7 @@ export default defineConfig({
     resolve: {
       alias: {
         '@': resolve('src/renderer/src'),
-        '@shell': resolve('src/renderer/shell'),
+        '@browser': resolve('src/renderer/browser'),
         '@shared': resolve('src/shared'),
         "@shadcn": resolve('src/shadcn'),
         vue: 'vue/dist/vue.esm-bundler.js'
@@ -92,7 +92,7 @@ export default defineConfig({
       vueDevTools(
         {
           appendTo:'src/renderer/src/main.ts'
-          // appendTo:'src/renderer/shell/main.ts'
+          // appendTo:'src/renderer/browser/main.ts'
         }
       )
     ],
@@ -107,8 +107,7 @@ export default defineConfig({
       cssCodeSplit: false,
       rollupOptions: {
         input: {
-          shell: resolve('src/renderer/shell/index.html'),
-          shellTooltipOverlay: resolve('src/renderer/shell/tooltip-overlay/index.html'),
+          browser: resolve('src/renderer/browser/index.html'),
           index: resolve('src/renderer/index.html'),
           floating: resolve('src/renderer/floating/index.html'),
           splash: resolve('src/renderer/splash/index.html'),

resources/model-db/providers.json

@@ -42933,6 +42933,40 @@
           },
           "type": "chat"
         },
+        {
+          "id": "gpt-5.4",
+          "name": "GPT-5.4",
+          "display_name": "GPT-5.4",
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "limit": {
+            "context": 400000,
+            "output": 128000
+          },
+          "temperature": false,
+          "tool_call": true,
+          "reasoning": {
+            "supported": true,
+            "default": true
+          },
+          "attachment": false,
+          "open_weights": false,
+          "knowledge": "2025-08-31",
+          "release_date": "2026-03-05",
+          "last_updated": "2026-03-05",
+          "cost": {
+            "input": 0,
+            "output": 0
+          },
+          "type": "chat"
+        },
         {
           "id": "gpt-5.1-codex",
           "name": "GPT-5.1-Codex",
@@ -131721,8 +131755,8 @@
             ]
           },
           "limit": {
-            "context": 131072,
-            "output": 131072
+            "context": 262144,
+            "output": 262144
           },
           "tool_call": true,
           "reasoning": {
@@ -134896,6 +134930,29 @@
           },
           "type": "chat"
         },
+        {
+          "id": "gpt-5.3-chat-latest",
+          "name": "gpt-5.3-chat-latest",
+          "display_name": "gpt-5.3-chat-latest",
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "limit": {
+            "context": 128000,
+            "output": 16000
+          },
+          "tool_call": true,
+          "reasoning": {
+            "supported": false
+          },
+          "type": "chat"
+        },
         {
           "id": "gpt-5.3-codex",
           "name": "gpt-5.3-codex",
@@ -134920,6 +134977,54 @@
           },
           "type": "chat"
         },
+        {
+          "id": "gpt-5.4",
+          "name": "gpt-5.4",
+          "display_name": "gpt-5.4",
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "limit": {
+            "context": 1050000,
+            "output": 128000
+          },
+          "tool_call": true,
+          "reasoning": {
+            "supported": true,
+            "default": true
+          },
+          "type": "chat"
+        },
+        {
+          "id": "gpt-5.4-pro",
+          "name": "gpt-5.4-pro",
+          "display_name": "gpt-5.4-pro",
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "limit": {
+            "context": 1050000,
+            "output": 128000
+          },
+          "tool_call": true,
+          "reasoning": {
+            "supported": true,
+            "default": true
+          },
+          "type": "chat"
+        },
         {
           "id": "grok-3",
           "name": "grok-3",
@@ -139268,6 +139373,63 @@
           },
           "type": "chat"
         },
+        {
+          "id": "x-ai/grok-4.2-fast",
+          "name": "xAI: Grok 4.2 Fast",
+          "display_name": "xAI: Grok 4.2 Fast",
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "limit": {
+            "context": 2000000,
+            "output": 2000000
+          },
+          "tool_call": false,
+          "reasoning": {
+            "supported": true,
+            "default": true
+          },
+          "cost": {
+            "input": 2,
+            "output": 6,
+            "cache_read": 0.2
+          },
+          "type": "chat"
+        },
+        {
+          "id": "x-ai/grok-4.2-fast-non-reasoning",
+          "name": "xAI: Grok 4.2 Fast Non Reasoning",
+          "display_name": "xAI: Grok 4.2 Fast Non Reasoning",
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "limit": {
+            "context": 2000000,
+            "output": 2000000
+          },
+          "tool_call": false,
+          "reasoning": {
+            "supported": false
+          },
+          "cost": {
+            "input": 2,
+            "output": 6,
+            "cache_read": 0.2
+          },
+          "type": "chat"
+        },
         {
           "id": "x-ai/grok-code-fast-1",
           "name": "xAI: Grok Code Fast 1",