Update README with i18n disclosure and newly added features

Document Jarvis integration, Combine Conversations, model category
filter, sidebar navigation, prompt caching, and the 2nd Brain trust
toggle. Clarify that localization is AI/machine-translated rather than
reviewed by native speakers. Normalize all em-dashes to plain hyphens.

.gitignore

@@ -4,6 +4,7 @@
 
 ## User settings
 xcuserdata/
+xcshareddata/
 
 ## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9)
 *.xcscmblueprint

DEVELOPMENT.md

@@ -72,17 +72,6 @@ oAI/
 
 ## Building
 
-### Build Scripts
-
-| Script | Architecture | Output |
-|--------|-------------|--------|
-| `build.sh` | Apple Silicon (arm64) | Installs directly to `/Applications` |
-| `build-dmg.sh` | Apple Silicon (arm64) | `oAI-<version>-AppleSilicon.dmg` on Desktop |
-| `build-dmg-universal.sh` | Universal (arm64 + x86_64) | `oAI-<version>-Universal.dmg` on Desktop |
-| `build_nb/sv/da/de/en.sh` | Apple Silicon (arm64) | Build + launch in specific language |
-
-All scripts: find Developer ID cert, clean-build via `xcodebuild`, re-sign with `codesign --options runtime --timestamp`, verify. Version is read from `MARKETING_VERSION` in `project.pbxproj`.
-
 ### Manual Build Commands
 
 ```bash

README.md

@@ -8,15 +8,16 @@ A powerful native macOS AI chat application with support for multiple providers,
 
 ### 🤖 Multi-Provider Support
 - **OpenAI** - GPT models with native API support
-- **Anthropic** - All Claude models
+- **Anthropic** - All Claude models; prompt caching support (direct API and via OpenRouter) reduces cost on repeated system prompts/context
 - **OpenRouter** - Access to 300+ AI models from multiple providers
 - **Ollama** - Local model inference for privacy
 
 ### 💬 Core Chat Capabilities
 - **Streaming Responses** - Real-time token streaming for faster interactions
 - **Conversation Management** - Save, load, export, and search conversations
+- **Combine Conversations** - Merge 2+ saved conversations, either by chronological concatenation or AI-assisted synthesis
 - **File Attachments** - Support for text files, images, and PDFs
-- **Image Generation** - Create images with supported models (DALL-E, Flux, etc.) — renders inline in chat
+- **Image Generation** - Create images with supported models (DALL-E, Flux, etc.) - renders inline in chat
 - **Reasoning / Thinking Tokens** - Stream live reasoning from thinking-capable models (DeepSeek R1, Claude 3.7+, o1/o3, Qwen); configurable effort level (High/Medium/Low/Minimal); collapsible block auto-expands while thinking and collapses when the answer arrives
 - **Online Mode** - DuckDuckGo and Google web search integration
 - **Session Statistics** - Track token usage, costs, and response times
@@ -51,17 +52,25 @@ Seamless conversation backup and sync across devices:
 
 ### ⚡ Shortcuts & Agent Skills
 - **Shortcuts** - Personal slash commands that expand to prompt templates; optional `{{input}}` placeholder for inline input
-- **Agent Skills (SKILL.md)** - Markdown instruction files injected into the system prompt; compatible with skill0.io, skillsmp.com, and other SKILL.md marketplaces; import as `.md` or `.zip` bundle with attached data files
+- **Agent Skills (SKILL.md)** - Markdown instruction files injected into the system prompt; compatible with skill0.io, skillsmp.com, and other SKILL.md marketplaces; import as `.md` or `.zip` bundle with attached data files; a skill named exactly "2nd Brain" can be marked always-trusted, skipping the bash approval prompt for its helper-script calls
 
 ### 📚 Anytype Integration
 Connect oAI to your local [Anytype](https://anytype.io) knowledge base:
-- **Search** — find objects by keyword across all spaces or within a specific one
+- **Search** - find objects by keyword across all spaces or within a specific one
-- **Read** — open any object and read its full markdown content
+- **Read** - open any object and read its full markdown content
-- **Append** — add content to the end of an existing object without touching existing text or internal links (preferred over full update)
+- **Append** - add content to the end of an existing object without touching existing text or internal links (preferred over full update)
-- **Create** — make new notes, tasks, or pages
+- **Create** - make new notes, tasks, or pages
-- **Checkbox tools** — surgically toggle to-do checkboxes or set task done/undone via native relation
+- **Checkbox tools** - surgically toggle to-do checkboxes or set task done/undone via native relation
 - All data stays on your machine (local API, no cloud)
 
+### 🛰️ Jarvis Integration
+Connect oAI to a self-hosted [Jarvis](https://jarvis.pm) agent-automation server:
+- **Agent Management** - List, create, edit, enable/disable, run, and stop agents
+- **Run History** - Expandable per-run output with status and timing
+- **Usage & Credits** - Per-agent usage stats and credits balance
+- **Queue Control** - Pause/resume all agents
+- `/jarvis` slash command opens the Jarvis panel directly
+
 ### 🖥️ Power-User Features
 - **Bash Execution** - AI can run shell commands via `/bin/zsh` (opt-in, with per-command approval prompt)
 - **iCloud Backup** - One-click settings backup to iCloud Drive; restore on any Mac; API keys excluded for security
@@ -85,9 +94,10 @@ Automated email responses powered by AI:
 - Footer stats display (messages, tokens, cost, sync status)
 - Header status indicators (MCP, Online mode, Git sync)
 - Responsive message layout with copy buttons
-- **Model Selector (⌘M)** - Filter by capability (Vision / Tools / Online / Image Gen / Thinking 🧠), sort by price or context window, search by name or description, per-row ⓘ info button; ★ favourite any model — favourites float to the top and can be filtered in one click
+- **Model Selector (⌘M)** - Filter by capability (Vision / Tools / Online / Image Gen / Thinking 🧠) or by category (Programming, Math, Medical, Translation, Roleplay, Creative, Science, Finance, Legal), sort by price or context window, search by name or description, per-row ⓘ info button; ★ favourite any model - favourites float to the top and can be filtered in one click
 - **Default Model** - Set a fixed startup model in Settings → General; switching models during a session does not overwrite it
-- **Localization** - UI ~~fully translated~~ being translated into Norwegian Bokmål, Swedish, Danish, and German; follows macOS language preference automatically
+- **Sidebar Navigation** - Collapsible sidebar for switching between conversations
+- **Localization** - Fully localized into Norwegian Bokmål, Swedish, Danish, German, and French; follows macOS language preference automatically. Translations are AI-generated (machine translation), not reviewed by native speakers - if you spot an awkward or incorrect phrase, please [open an issue](https://gitlab.pm/rune/oai-swift/issues/new)
 
 ![Advanced Features](Screenshots/4.png)
 
@@ -97,8 +107,8 @@ Automated email responses powered by AI:
 
 Download the latest release from the [Releases page](https://gitlab.pm/rune/oai-swift/releases). Two builds are available:
 
-- **oAI-x.x.x-AppleSilicon.dmg** — for Macs with an Apple Silicon chip (M1 and later)
+- **oAI-x.x.x-AppleSilicon.dmg** - for Macs with an Apple Silicon chip (M1 and later)
-- **oAI-x.x.x-Universal.dmg** — runs natively on both Apple Silicon and Intel Macs
+- **oAI-x.x.x-Universal.dmg** - runs natively on both Apple Silicon and Intel Macs
 
 ### Installing from DMG
 
@@ -107,19 +117,19 @@ Download the latest release from the [Releases page](https://gitlab.pm/rune/oai-
 3. Eject the DMG
 4. Launch oAI from Applications or Spotlight
 
-### First Launch — Gatekeeper Warning
+### First Launch - Gatekeeper Warning
 
-oAI is **signed by the developer** but has **not yet been notarized by Apple**. Notarization is Apple's automated malware scan — the app itself is safe, but macOS Gatekeeper may block it on first launch with a message saying the app "cannot be opened because the developer cannot be verified."
+oAI is **signed by the developer** but has **not yet been notarized by Apple**. Notarization is Apple's automated malware scan - the app itself is safe, but macOS Gatekeeper may block it on first launch with a message saying the app "cannot be opened because the developer cannot be verified."
 
 To open the app, you have two options:
 
-**Option A — Right-click to open (quickest):**
+**Option A - Right-click to open (quickest):**
 1. Right-click (or Control-click) `oAI.app` in Applications
 2. Select **Open** from the context menu
 3. Click **Open** in the dialog that appears
 4. After doing this once, the app opens normally from then on
 
-**Option B — Remove the quarantine flag via Terminal:**
+**Option B - Remove the quarantine flag via Terminal:**
 
 ```bash
 xattr -dr com.apple.quarantine /Applications/oAI.app
@@ -139,7 +149,7 @@ Add your API keys in Settings (⌘,) → General tab:
 - **Anthropic** - Get from [Anthropic Console](https://console.anthropic.com/) or use OAuth
 - **OpenRouter** - Get from [OpenRouter Keys](https://openrouter.ai/keys)
 - **Ollama** - Base URL (default: http://localhost:11434)
-- **Google** - API key used for Google Custom Search (web search) and Google embeddings (semantic search) — not a chat provider
+- **Google** - API key used for Google Custom Search (web search) and Google embeddings (semantic search) - not a chat provider
 
 ### Essential Settings
 
@@ -313,12 +323,16 @@ AI-powered email auto-responder:
 
 - [x] Vector index for faster semantic search (sqlite-vss)
 - [x] Reasoning / thinking tokens (streamed live, collapsible)
-- [x] Localization (Norwegian Bokmål, Swedish, Danish, German)
+- [x] Localization (Norwegian Bokmål, Swedish, Danish, German, French)
 - [x] iCloud Backup (settings export/restore)
 - [x] Bash execution with per-command approval
 - [x] Anytype integration (read, append, create, checkbox tools)
 - [x] Model favourites (starred models, filter, float to top)
-- [ ] SOUL.md / USER.md — living identity documents injected into system prompt
+- [x] Jarvis integration (agent management, run history, usage/credits)
+- [x] Model category filter (Programming, Math, Medical, etc.)
+- [x] Combine saved conversations (concatenation or AI-assisted synthesis)
+- [x] Sidebar navigation redesign
+- [ ] SOUL.md / USER.md - living identity documents injected into system prompt
 - [ ] Parallel research agents (read-only, concurrent)
 - [ ] Local embeddings (sentence-transformers, $0 cost)
 - [ ] Multi-modal conversation export (PDF, HTML)
@@ -332,9 +346,6 @@ This means you are free to use, study, modify, and distribute oAI, but any modif
 
 See [LICENSE](LICENSE) for the full license text, or visit [gnu.org/licenses/agpl-3.0](https://www.gnu.org/licenses/agpl-3.0.html).
 
-## Development
-
-See [DEVELOPMENT.md](DEVELOPMENT.md) for project structure, build scripts, database schema, and contribution guidelines.
 
 ## Author
 
@@ -344,15 +355,12 @@ See [DEVELOPMENT.md](DEVELOPMENT.md) for project structure, build scripts, datab
 - Blog: [https://blog.rune.pm](https://blog.rune.pm)
 - Gitlab.pm: [@rune](https://gitlab.pm/rune)
 
-## Contributing
-
-Contributions are welcome! See [DEVELOPMENT.md](DEVELOPMENT.md) for build instructions and project structure.
 
 ---
 
 ## Disclaimer
 
-oAI takes real actions on your behalf — it can send emails, write files, make calendar changes, and post Telegram messages. Review your whitelist and permission settings carefully before use. Content you send is processed by your configured AI provider (Anthropic, OpenRouter, or OpenAI). oAI-Web is provided "as is" without warranty of any kind — the author accepts no responsibility for actions taken by the agent or any consequences thereof. See LICENSE for full terms.
+oAI takes real actions on your behalf - it can send emails, write files, make calendar changes, and post Telegram messages. Review your whitelist and permission settings carefully before use. Content you send is processed by your configured AI provider (Anthropic, OpenRouter, or OpenAI). oAI-Web is provided "as is" without warranty of any kind - the author accepts no responsibility for actions taken by the agent or any consequences thereof. See LICENSE for full terms.
 
 ---
 

oAI.xcodeproj/project.pbxproj

@@ -104,6 +104,7 @@
 				da,
 				de,
 				sv,
+				fr,
 			);
 			mainGroup = A550A6592F3B72EA00136F2B;
 			minimizedProjectReferenceProxies = 1;
@@ -279,11 +280,11 @@
 				"INFOPLIST_KEY_UIStatusBarStyle[sdk=iphonesimulator*]" = UIStatusBarStyleDefault;
 				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPad = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
 				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPhone = "UIInterfaceOrientationPortrait UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
-				IPHONEOS_DEPLOYMENT_TARGET = 26.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 27.0;
 				LD_RUNPATH_SEARCH_PATHS = "@executable_path/Frameworks";
 				"LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = "@executable_path/../Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 26.2;
+				MACOSX_DEPLOYMENT_TARGET = 27.0;
-				MARKETING_VERSION = 2.3.9;
+				MARKETING_VERSION = 2.4.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.oai.oAI;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				REGISTER_APP_GROUPS = YES;
@@ -323,11 +324,11 @@
 				"INFOPLIST_KEY_UIStatusBarStyle[sdk=iphonesimulator*]" = UIStatusBarStyleDefault;
 				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPad = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
 				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPhone = "UIInterfaceOrientationPortrait UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
-				IPHONEOS_DEPLOYMENT_TARGET = 26.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 27.0;
 				LD_RUNPATH_SEARCH_PATHS = "@executable_path/Frameworks";
 				"LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = "@executable_path/../Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 26.2;
+				MACOSX_DEPLOYMENT_TARGET = 27.0;
-				MARKETING_VERSION = 2.3.9;
+				MARKETING_VERSION = 2.4.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.oai.oAI;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				REGISTER_APP_GROUPS = YES;

oAI.xcodeproj/xcshareddata/xcschemes/oAI.xcscheme

@@ -1,79 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "2620"
-   version = "1.7">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES"
-      buildArchitectures = "Automatic">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "A550A6612F3B72EA00136F2B"
-               BuildableName = "oAI.app"
-               BlueprintName = "oAI"
-               ReferencedContainer = "container:oAI.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      shouldAutocreateTestPlan = "YES">
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = "nb"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "A550A6612F3B72EA00136F2B"
-            BuildableName = "oAI.app"
-            BlueprintName = "oAI"
-            ReferencedContainer = "container:oAI.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "A550A6612F3B72EA00136F2B"
-            BuildableName = "oAI.app"
-            BlueprintName = "oAI"
-            ReferencedContainer = "container:oAI.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>

oAI/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,20 @@
+{
+  "colors" : [
+    {
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0xCA",
+          "green" : "0x7A",
+          "red" : "0x0A"
+        }
+      },
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

oAI/Info.plist

@@ -6,5 +6,13 @@
         <string>oAI.help</string>
         <key>CFBundleHelpBookName</key>
         <string>oAI Help</string>
+        <key>CFBundleLocalizations</key>
+        <array>
+              <string>en</string>
+              <string>nb</string>
+              <string>da</string>
+              <string>de</string>
+              <string>sv</string>
+        </array>
   </dict>
   </plist>

oAI/Models/Conversation.swift

@@ -33,7 +33,7 @@ struct Conversation: Identifiable, Codable {
     var updatedAt: Date
     var primaryModel: String? // Primary model used in this conversation
 
-    init(
+    nonisolated init(
         id: UUID = UUID(),
         name: String,
         messages: [Message] = [],

oAI/Models/EmailLog.swift

@@ -44,7 +44,7 @@ struct EmailLog: Identifiable, Codable, Equatable {
     let responseTime: TimeInterval? // Time to generate response in seconds
     let modelId: String? // Model that handled the email
 
-    init(
+    nonisolated init(
         id: UUID = UUID(),
         timestamp: Date = Date(),
         sender: String,

oAI/Models/Message.swift

@@ -66,7 +66,7 @@ struct Message: Identifiable, Codable, Equatable {
     // Reasoning/thinking content (not persisted — in-memory only)
     var thinkingContent: String? = nil
 
-    init(
+    nonisolated init(
         id: UUID = UUID(),
         role: MessageRole,
         content: String,

oAI/Providers/AIProvider.swift

@@ -130,11 +130,23 @@ struct ChatResponse: Codable {
         let promptTokens: Int
         let completionTokens: Int
         let totalTokens: Int
+        let cacheCreationInputTokens: Int?
+        let cacheReadInputTokens: Int?
+
+        init(promptTokens: Int, completionTokens: Int, totalTokens: Int, cacheCreationInputTokens: Int? = nil, cacheReadInputTokens: Int? = nil) {
+            self.promptTokens = promptTokens
+            self.completionTokens = completionTokens
+            self.totalTokens = totalTokens
+            self.cacheCreationInputTokens = cacheCreationInputTokens
+            self.cacheReadInputTokens = cacheReadInputTokens
+        }
 
         enum CodingKeys: String, CodingKey {
             case promptTokens = "prompt_tokens"
             case completionTokens = "completion_tokens"
             case totalTokens = "total_tokens"
+            case cacheCreationInputTokens = "cache_creation_input_tokens"
+            case cacheReadInputTokens = "cache_read_input_tokens"
         }
     }
 

oAI/Providers/AnthropicProvider.swift

@@ -77,6 +77,15 @@ class AnthropicProvider: AIProvider {
     /// falls back to prefix matching so newly-released model variants (e.g. "claude-sonnet-4-6-20260301")
     /// still inherit the correct pricing tier.
     private static let knownModels: [ModelInfo] = [
+        // Claude Fable 5
+        ModelInfo(
+            id: "claude-fable-5",
+            name: "Claude Fable 5",
+            description: "Anthropic's creative and storytelling model",
+            contextLength: 200_000,
+            pricing: .init(prompt: 10.0, completion: 50.0),
+            capabilities: .init(vision: true, tools: true, online: true)
+        ),
         // Claude 4.x series
         ModelInfo(
             id: "claude-opus-4-6",
@@ -173,6 +182,7 @@ class AnthropicProvider: AIProvider {
     /// Pricing tiers used for fuzzy fallback matching on unknown model IDs.
     /// Keyed by model name prefix (longest match wins).
     private static let pricingFallback: [(prefix: String, prompt: Double, completion: Double)] = [
+        ("claude-fable",  10.0, 50.0),
         ("claude-opus",   15.0, 75.0),
         ("claude-sonnet",  3.0, 15.0),
         ("claude-haiku",   0.80, 4.0),
@@ -356,6 +366,19 @@ class AnthropicProvider: AIProvider {
             }
         }
 
+        // Mark the last message with a cache breakpoint so the next loop
+        // iteration (or next turn) can reuse everything up through this one.
+        if var lastMessage = conversationMessages.popLast() {
+            if let content = lastMessage["content"] as? String {
+                lastMessage["content"] = [["type": "text", "text": content, "cache_control": ["type": "ephemeral"]]]
+            } else if var blocks = lastMessage["content"] as? [[String: Any]], var lastBlock = blocks.popLast() {
+                lastBlock["cache_control"] = ["type": "ephemeral"]
+                blocks.append(lastBlock)
+                lastMessage["content"] = blocks
+            }
+            conversationMessages.append(lastMessage)
+        }
+
         var body: [String: Any] = [
             "model": model,
             "messages": conversationMessages,
@@ -363,7 +386,9 @@ class AnthropicProvider: AIProvider {
             "stream": false
         ]
         if let systemText = systemText {
-            body["system"] = systemText
+            // Array form carries a cache breakpoint; also covers tools, which
+            // render before system in Anthropic's prefix order.
+            body["system"] = [["type": "text", "text": systemText, "cache_control": ["type": "ephemeral"]]]
         }
         if let temperature = temperature {
             body["temperature"] = temperature
@@ -430,6 +455,8 @@ class AnthropicProvider: AIProvider {
                     var currentId = ""
                     var currentModel = request.model
                     var inputTokens = 0
+                    var cacheCreationTokens: Int? = nil
+                    var cacheReadTokens: Int? = nil
 
                     for try await line in bytes.lines {
                         // Anthropic SSE: "event: ..." and "data: {...}"
@@ -449,6 +476,11 @@ class AnthropicProvider: AIProvider {
                                 currentModel = message["model"] as? String ?? request.model
                                 if let usageDict = message["usage"] as? [String: Any] {
                                     inputTokens = usageDict["input_tokens"] as? Int ?? 0
+                                    cacheCreationTokens = usageDict["cache_creation_input_tokens"] as? Int
+                                    cacheReadTokens = usageDict["cache_read_input_tokens"] as? Int
+                                    if cacheCreationTokens != nil || cacheReadTokens != nil {
+                                        Log.api.info("Anthropic stream cache usage: input=\(inputTokens), created=\(cacheCreationTokens ?? 0), read=\(cacheReadTokens ?? 0)")
+                                    }
                                 }
                             }
 
@@ -472,7 +504,13 @@ class AnthropicProvider: AIProvider {
                             var usage: ChatResponse.Usage? = nil
                             if let usageDict = event["usage"] as? [String: Any] {
                                 let outputTokens = usageDict["output_tokens"] as? Int ?? 0
-                                usage = ChatResponse.Usage(promptTokens: inputTokens, completionTokens: outputTokens, totalTokens: inputTokens + outputTokens)
+                                usage = ChatResponse.Usage(
+                                    promptTokens: inputTokens,
+                                    completionTokens: outputTokens,
+                                    totalTokens: inputTokens + outputTokens,
+                                    cacheCreationInputTokens: cacheCreationTokens,
+                                    cacheReadInputTokens: cacheReadTokens
+                                )
                             }
                             continuation.yield(StreamChunk(
                                 id: currentId,
@@ -582,6 +620,19 @@ class AnthropicProvider: AIProvider {
             }
         }
 
+        // Mark the last message with a cache breakpoint so the next turn can
+        // reuse everything up through this one as a cached prefix.
+        if var lastMessage = apiMessages.popLast() {
+            if let content = lastMessage["content"] as? String {
+                lastMessage["content"] = [["type": "text", "text": content, "cache_control": ["type": "ephemeral"]]]
+            } else if var blocks = lastMessage["content"] as? [[String: Any]], var lastBlock = blocks.popLast() {
+                lastBlock["cache_control"] = ["type": "ephemeral"]
+                blocks.append(lastBlock)
+                lastMessage["content"] = blocks
+            }
+            apiMessages.append(lastMessage)
+        }
+
         var body: [String: Any] = [
             "model": request.model,
             "messages": apiMessages,
@@ -590,7 +641,10 @@ class AnthropicProvider: AIProvider {
         ]
 
         if let systemText = systemText {
-            body["system"] = systemText
+            // Array form (rather than a plain string) carries a cache breakpoint.
+            // Per Anthropic's render order (tools -> system -> messages), this
+            // single breakpoint caches the tool definitions too.
+            body["system"] = [["type": "text", "text": systemText, "cache_control": ["type": "ephemeral"]]]
         }
         if let temperature = request.temperature {
             body["temperature"] = temperature
@@ -665,6 +719,11 @@ class AnthropicProvider: AIProvider {
         let usageDict = json["usage"] as? [String: Any]
         let inputTokens = usageDict?["input_tokens"] as? Int ?? 0
         let outputTokens = usageDict?["output_tokens"] as? Int ?? 0
+        let cacheCreationTokens = usageDict?["cache_creation_input_tokens"] as? Int
+        let cacheReadTokens = usageDict?["cache_read_input_tokens"] as? Int
+        if cacheCreationTokens != nil || cacheReadTokens != nil {
+            Log.api.info("Anthropic cache usage: input=\(inputTokens), created=\(cacheCreationTokens ?? 0), read=\(cacheReadTokens ?? 0)")
+        }
 
         return ChatResponse(
             id: id,
@@ -675,7 +734,9 @@ class AnthropicProvider: AIProvider {
             usage: ChatResponse.Usage(
                 promptTokens: inputTokens,
                 completionTokens: outputTokens,
-                totalTokens: inputTokens + outputTokens
+                totalTokens: inputTokens + outputTokens,
+                cacheCreationInputTokens: cacheCreationTokens,
+                cacheReadInputTokens: cacheReadTokens
             ),
             created: Date(),
             toolCalls: toolCalls.isEmpty ? nil : toolCalls

oAI/Providers/OpenRouterModels.swift

@@ -48,7 +48,12 @@ struct OpenRouterChatRequest: Codable {
     let toolChoice: String?
     let modalities: [String]?
     let reasoning: ReasoningAPIConfig?
-    
+    let cacheControl: CacheControl?
+
+    struct CacheControl: Codable {
+        let type: String
+    }
+
     struct APIMessage: Codable {
         let role: String
         let content: MessageContent
@@ -138,6 +143,7 @@ struct OpenRouterChatRequest: Codable {
         case toolChoice = "tool_choice"
         case modalities
         case reasoning
+        case cacheControl = "cache_control"
     }
 }
 
@@ -225,11 +231,23 @@ struct OpenRouterChatResponse: Codable {
         let promptTokens: Int
         let completionTokens: Int
         let totalTokens: Int
-        
+        let promptTokensDetails: PromptTokensDetails?
+
+        struct PromptTokensDetails: Codable {
+            let cachedTokens: Int?
+            let cacheWriteTokens: Int?
+
+            enum CodingKeys: String, CodingKey {
+                case cachedTokens = "cached_tokens"
+                case cacheWriteTokens = "cache_write_tokens"
+            }
+        }
+
         enum CodingKeys: String, CodingKey {
             case promptTokens = "prompt_tokens"
             case completionTokens = "completion_tokens"
             case totalTokens = "total_tokens"
+            case promptTokensDetails = "prompt_tokens_details"
         }
     }
 }

oAI/Providers/OpenRouterProvider.swift

@@ -198,6 +198,11 @@ class OpenRouterProvider: AIProvider {
         }
         if let maxTokens = maxTokens { body["max_tokens"] = maxTokens }
         if let temperature = temperature { body["temperature"] = temperature }
+        // Anthropic models require an explicit cache_control opt-in on OpenRouter;
+        // other providers cache automatically.
+        if model.hasPrefix("anthropic/") {
+            body["cache_control"] = ["type": "ephemeral"]
+        }
 
         var urlRequest = URLRequest(url: url)
         urlRequest.httpMethod = "POST"
@@ -388,6 +393,12 @@ class OpenRouterProvider: AIProvider {
             ReasoningAPIConfig(effort: $0.effort, exclude: $0.exclude ? true : nil)
         }
 
+        // Anthropic models require an explicit cache_control opt-in on OpenRouter;
+        // other providers (OpenAI, DeepSeek, Gemini, Grok, etc.) cache automatically.
+        let cacheControl: OpenRouterChatRequest.CacheControl? = effectiveModel.hasPrefix("anthropic/")
+            ? .init(type: "ephemeral")
+            : nil
+
         return OpenRouterChatRequest(
             model: effectiveModel,
             messages: apiMessages,
@@ -398,7 +409,8 @@ class OpenRouterProvider: AIProvider {
             tools: request.tools,
             toolChoice: request.tools != nil ? "auto" : nil,
             modalities: request.imageGeneration ? ["text", "image"] : nil,
-            reasoning: reasoningConfig
+            reasoning: reasoningConfig,
+            cacheControl: cacheControl
         )
     }
     
@@ -416,6 +428,11 @@ class OpenRouterProvider: AIProvider {
         let allImages = topLevelImages + blockImages
         let images: [Data]? = allImages.isEmpty ? nil : allImages
 
+        if let details = apiResponse.usage?.promptTokensDetails,
+           details.cachedTokens != nil || details.cacheWriteTokens != nil {
+            Log.api.info("OpenRouter cache usage: model=\(apiResponse.model), created=\(details.cacheWriteTokens ?? 0), read=\(details.cachedTokens ?? 0)")
+        }
+
         return ChatResponse(
             id: apiResponse.id,
             model: apiResponse.model,
@@ -426,7 +443,9 @@ class OpenRouterProvider: AIProvider {
                 ChatResponse.Usage(
                     promptTokens: usage.promptTokens,
                     completionTokens: usage.completionTokens,
-                    totalTokens: usage.totalTokens
+                    totalTokens: usage.totalTokens,
+                    cacheCreationInputTokens: usage.promptTokensDetails?.cacheWriteTokens,
+                    cacheReadInputTokens: usage.promptTokensDetails?.cachedTokens
                 )
             },
             created: Date(timeIntervalSince1970: TimeInterval(apiResponse.created)),
@@ -446,6 +465,11 @@ class OpenRouterProvider: AIProvider {
         let allImages = topLevelImages + blockImages
         let images: [Data]? = allImages.isEmpty ? nil : allImages
 
+        if let details = apiChunk.usage?.promptTokensDetails,
+           details.cachedTokens != nil || details.cacheWriteTokens != nil {
+            Log.api.info("OpenRouter stream cache usage: model=\(apiChunk.model), created=\(details.cacheWriteTokens ?? 0), read=\(details.cachedTokens ?? 0)")
+        }
+
         return StreamChunk(
             id: apiChunk.id,
             model: apiChunk.model,
@@ -460,7 +484,9 @@ class OpenRouterProvider: AIProvider {
                 ChatResponse.Usage(
                     promptTokens: usage.promptTokens,
                     completionTokens: usage.completionTokens,
-                    totalTokens: usage.totalTokens
+                    totalTokens: usage.totalTokens,
+                    cacheCreationInputTokens: usage.promptTokensDetails?.cacheWriteTokens,
+                    cacheReadInputTokens: usage.promptTokensDetails?.cachedTokens
                 )
             }
         )

oAI/Services/ConversationMergeService.swift

@@ -0,0 +1,193 @@
+//
+//  ConversationMergeService.swift
+//  oAI
+//
+//  Combine multiple saved conversations into one (simple concatenation or AI-assisted merge)
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// Copyright (C) 2026 Rune Olsen
+//
+// This file is part of oAI.
+//
+// oAI is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// oAI is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
+// Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public
+// License along with oAI. If not, see <https://www.gnu.org/licenses/>.
+
+
+import Foundation
+import os
+
+enum CombineMode: String, Sendable {
+    case simple
+    case ai
+}
+
+enum MergeError: LocalizedError {
+    case tooFewConversations
+    case noDefaultModel
+    case noAPIKey
+    case invalidAIResponse(String)
+
+    var errorDescription: String? {
+        switch self {
+        case .tooFewConversations:
+            return "Select at least two conversations to combine."
+        case .noDefaultModel:
+            return "No default model is configured. Set one in Settings → General → Default Model."
+        case .noAPIKey:
+            return "No API key configured for the default provider. Add one in Settings."
+        case .invalidAIResponse(let snippet):
+            return "The model's response could not be parsed into a conversation: \(snippet)"
+        }
+    }
+}
+
+enum ConversationMergeService {
+
+    static func merge(
+        conversationIds: [UUID],
+        name: String,
+        mode: CombineMode,
+        deleteOriginals: Bool
+    ) async throws -> Conversation {
+        guard conversationIds.count >= 2 else {
+            throw MergeError.tooFewConversations
+        }
+
+        let sources: [(Conversation, [Message])] = try conversationIds.compactMap { id in
+            try DatabaseService.shared.loadConversation(id: id)
+        }
+
+        // The model used in the merged conversation should reflect the most recently used
+        // model across the *source* conversations — never the model that performed the merge.
+        let latestModelId = sources
+            .flatMap { $0.1 }
+            .filter { $0.modelId != nil }
+            .max { $0.timestamp < $1.timestamp }?
+            .modelId
+
+        let mergedMessages: [Message]
+        switch mode {
+        case .simple:
+            mergedMessages = simpleMerge(sources)
+        case .ai:
+            mergedMessages = try await aiMerge(sources)
+        }
+
+        let newConversation = try DatabaseService.shared.saveConversation(
+            id: UUID(),
+            name: name,
+            messages: mergedMessages,
+            primaryModel: latestModelId
+        )
+
+        if deleteOriginals {
+            for id in conversationIds {
+                _ = try? DatabaseService.shared.deleteConversation(id: id)
+            }
+        }
+
+        Log.db.info("Combined \(conversationIds.count) conversations into '\(name)' (mode: \(mode.rawValue), deleteOriginals: \(deleteOriginals))")
+
+        return newConversation
+    }
+
+    private static func simpleMerge(_ sources: [(Conversation, [Message])]) -> [Message] {
+        sources.flatMap { $0.1 }.sorted { $0.timestamp < $1.timestamp }
+    }
+
+    private struct MergedTurn: Codable {
+        let role: String
+        let content: String
+    }
+
+    private static func aiMerge(_ sources: [(Conversation, [Message])]) async throws -> [Message] {
+        let settings = SettingsService.shared
+        guard let modelId = settings.defaultModel, !modelId.isEmpty else {
+            throw MergeError.noDefaultModel
+        }
+        guard let provider = ProviderRegistry.shared.getProvider(for: settings.defaultProvider) else {
+            throw MergeError.noAPIKey
+        }
+
+        let transcript = sources.map { conversation, messages -> String in
+            let body = messages.map { msg -> String in
+                let label = msg.role == .user ? "**User:**" : "**Assistant:**"
+                return "\(label) \(msg.content)"
+            }.joined(separator: "\n\n")
+            return "### Conversation: \(conversation.name)\n\n\(body)"
+        }.joined(separator: "\n\n---\n\n")
+
+        let mergePrompt = """
+        Merge the following saved conversation transcripts into a single, coherent conversation. \
+        Remove redundant or duplicate exchanges, keep the most informative answer when sources overlap, \
+        preserve important details from each source, and do not invent facts that were not in the originals.
+
+        Respond with ONLY a JSON array of message objects in logical order, each in the form \
+        {"role": "user" or "assistant", "content": "..."}. Do not include any text outside the JSON array.
+
+        \(transcript)
+        """
+
+        let request = ChatRequest(
+            messages: [Message(role: .user, content: mergePrompt)],
+            model: modelId,
+            stream: false,
+            maxTokens: 4000,
+            temperature: 0.3,
+            topP: nil,
+            systemPrompt: "You are a helpful assistant that merges chat conversation transcripts into one clean, coherent conversation.",
+            tools: nil,
+            onlineMode: false,
+            imageGeneration: false
+        )
+
+        let response: ChatResponse
+        do {
+            response = try await provider.chat(request: request)
+        } catch {
+            Log.api.error("Conversation merge AI call failed: \(error.localizedDescription)")
+            throw error
+        }
+
+        let turns = try parseTurns(from: response.content)
+
+        // modelId intentionally left nil here: these messages are a synthesized composite,
+        // not output from a single source model. The conversation's primaryModel (set by the
+        // caller from the source conversations) is what drives the model shown in the list.
+        let base = Date()
+        return turns.enumerated().map { index, turn in
+            Message(
+                role: turn.role == "user" ? .user : .assistant,
+                content: turn.content,
+                timestamp: base.addingTimeInterval(TimeInterval(index))
+            )
+        }
+    }
+
+    private static func parseTurns(from raw: String) throws -> [MergedTurn] {
+        var text = raw.trimmingCharacters(in: .whitespacesAndNewlines)
+        if text.hasPrefix("```") {
+            text = text.components(separatedBy: "\n").dropFirst().joined(separator: "\n")
+            if text.hasSuffix("```") {
+                text = String(text.dropLast(3))
+            }
+            text = text.trimmingCharacters(in: .whitespacesAndNewlines)
+        }
+        guard let data = text.data(using: .utf8),
+              let turns = try? JSONDecoder().decode([MergedTurn].self, from: data),
+              !turns.isEmpty else {
+            throw MergeError.invalidAIResponse(String(raw.prefix(200)))
+        }
+        return turns
+    }
+}

oAI/Services/DatabaseService.swift

@@ -134,15 +134,29 @@ final class DatabaseService: Sendable {
     nonisolated static let shared = DatabaseService()
 
     private let dbQueue: DatabaseQueue
-    private let isoFormatter: ISO8601DateFormatter
 
     // Command history limit - keep most recent 5000 entries
-    private static let maxHistoryEntries = 5000
+    private nonisolated static let maxHistoryEntries = 5000
+
+    // ISO8601DateFormatter is @MainActor in macOS 27. Use Date.ISO8601FormatStyle (value type, Sendable).
+    private nonisolated static let isoStyle = Date.ISO8601FormatStyle(
+        dateSeparator: .dash,
+        dateTimeSeparator: .standard,
+        timeSeparator: .colon,
+        timeZoneSeparator: .colon,
+        includingFractionalSeconds: true,
+        timeZone: .gmt
+    )
+
+    private nonisolated static func isoString(from date: Date) -> String {
+        isoStyle.format(date)
+    }
+
+    private nonisolated static func isoDate(from string: String) -> Date? {
+        (try? isoStyle.parse(string)) ?? (try? Date(string, strategy: .iso8601))
+    }
 
     nonisolated private init() {
-        isoFormatter = ISO8601DateFormatter()
-        isoFormatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
-
         let fileManager = FileManager.default
         let appSupport = fileManager.urls(for: .applicationSupportDirectory, in: .userDomainMask).first!
         let dbDirectory = appSupport.appendingPathComponent("oAI", isDirectory: true)
@@ -156,7 +170,7 @@ final class DatabaseService: Sendable {
         try! migrator.migrate(dbQueue)
     }
 
-    private var migrator: DatabaseMigrator {
+    private nonisolated var migrator: DatabaseMigrator {
         var migrator = DatabaseMigrator()
 
         migrator.registerMigration("v1") { db in
@@ -375,7 +389,7 @@ final class DatabaseService: Sendable {
     nonisolated func saveConversation(id: UUID, name: String, messages: [Message], primaryModel: String?) throws -> Conversation {
         Log.db.info("Saving conversation '\(name)' with \(messages.count) messages (primaryModel: \(primaryModel ?? "none"))")
         let now = Date()
-        let nowString = isoFormatter.string(from: now)
+        let nowString = Self.isoString(from: now)
 
         let convRecord = ConversationRecord(
             id: id.uuidString,
@@ -394,7 +408,7 @@ final class DatabaseService: Sendable {
                 content: msg.content,
                 tokens: msg.tokens,
                 cost: msg.cost,
-                timestamp: isoFormatter.string(from: msg.timestamp),
+                timestamp: Self.isoString(from: msg.timestamp),
                 sortOrder: index,
                 modelId: msg.modelId
             )
@@ -420,7 +434,7 @@ final class DatabaseService: Sendable {
 
     /// Update an existing conversation in-place: rename it, replace all its messages.
     nonisolated func updateConversation(id: UUID, name: String, messages: [Message], primaryModel: String?) throws {
-        let nowString = isoFormatter.string(from: Date())
+        let nowString = Self.isoString(from: Date())
 
         let messageRecords = messages.enumerated().compactMap { index, msg -> MessageRecord? in
             guard msg.role != .system else { return nil }
@@ -431,7 +445,7 @@ final class DatabaseService: Sendable {
                 content: msg.content,
                 tokens: msg.tokens,
                 cost: msg.cost,
-                timestamp: isoFormatter.string(from: msg.timestamp),
+                timestamp: Self.isoString(from: msg.timestamp),
                 sortOrder: index,
                 modelId: msg.modelId
             )
@@ -466,7 +480,7 @@ final class DatabaseService: Sendable {
             let messages = messageRecords.compactMap { record -> Message? in
                 guard let msgId = UUID(uuidString: record.id),
                       let role = MessageRole(rawValue: record.role),
-                      let timestamp = self.isoFormatter.date(from: record.timestamp)
+                      let timestamp = Self.isoDate(from: record.timestamp)
                 else { return nil }
 
                 let starred = (try? MessageMetadataRecord.fetchOne(db, key: record.id))?.user_starred == 1
@@ -484,8 +498,8 @@ final class DatabaseService: Sendable {
             }
 
             guard let convId = UUID(uuidString: convRecord.id),
-                  let createdAt = self.isoFormatter.date(from: convRecord.createdAt),
+                  let createdAt = Self.isoDate(from: convRecord.createdAt),
-                  let updatedAt = self.isoFormatter.date(from: convRecord.updatedAt)
+                  let updatedAt = Self.isoDate(from: convRecord.updatedAt)
             else { return nil }
 
             let conversation = Conversation(
@@ -509,8 +523,8 @@ final class DatabaseService: Sendable {
 
             return records.compactMap { record -> Conversation? in
                 guard let id = UUID(uuidString: record.id),
-                      let createdAt = self.isoFormatter.date(from: record.createdAt),
+                      let createdAt = Self.isoDate(from: record.createdAt),
-                      let updatedAt = self.isoFormatter.date(from: record.updatedAt)
+                      let updatedAt = Self.isoDate(from: record.updatedAt)
                 else { return nil }
 
                 // Fetch message count without loading all messages
@@ -524,7 +538,7 @@ final class DatabaseService: Sendable {
                     .order(Column("sortOrder").desc)
                     .fetchOne(db)
 
-                let lastDate = lastMsg.flatMap { self.isoFormatter.date(from: $0.timestamp) } ?? updatedAt
+                let lastDate = lastMsg.flatMap { Self.isoDate(from: $0.timestamp) } ?? updatedAt
 
                 // Derive primary model: prefer the stored field, fall back to last message's modelId
                 let primaryModel = record.primaryModel ?? lastMsg?.modelId
@@ -574,7 +588,7 @@ final class DatabaseService: Sendable {
                 convRecord.name = name
             }
 
-            convRecord.updatedAt = self.isoFormatter.string(from: Date())
+            convRecord.updatedAt = Self.isoString(from: Date())
             try convRecord.update(db)
 
             if let messages = messages {
@@ -589,7 +603,7 @@ final class DatabaseService: Sendable {
                         content: msg.content,
                         tokens: msg.tokens,
                         cost: msg.cost,
-                        timestamp: self.isoFormatter.string(from: msg.timestamp),
+                        timestamp: Self.isoString(from: msg.timestamp),
                         sortOrder: index
                     )
                 }
@@ -610,7 +624,7 @@ final class DatabaseService: Sendable {
         let record = HistoryRecord(
             id: UUID().uuidString,
             input: input,
-            timestamp: isoFormatter.string(from: now)
+            timestamp: Self.isoString(from: now)
         )
 
         try? dbQueue.write { db in
@@ -643,7 +657,7 @@ final class DatabaseService: Sendable {
                 .fetchAll(db)
 
             return records.compactMap { record in
-                guard let date = isoFormatter.date(from: record.timestamp) else {
+                guard let date = Self.isoDate(from: record.timestamp) else {
                     return nil
                 }
                 return (input: record.input, timestamp: date)
@@ -659,7 +673,7 @@ final class DatabaseService: Sendable {
                 .fetchAll(db)
 
             return records.compactMap { record in
-                guard let date = isoFormatter.date(from: record.timestamp) else {
+                guard let date = Self.isoDate(from: record.timestamp) else {
                     return nil
                 }
                 return (input: record.input, timestamp: date)
@@ -672,7 +686,7 @@ final class DatabaseService: Sendable {
     nonisolated func saveEmailLog(_ log: EmailLog) {
         let record = EmailLogRecord(
             id: log.id.uuidString,
-            timestamp: isoFormatter.string(from: log.timestamp),
+            timestamp: Self.isoString(from: log.timestamp),
             sender: log.sender,
             subject: log.subject,
             emailContent: log.emailContent,
@@ -698,7 +712,7 @@ final class DatabaseService: Sendable {
                 .fetchAll(db)
 
             return records.compactMap { record in
-                guard let timestamp = isoFormatter.date(from: record.timestamp),
+                guard let timestamp = Self.isoDate(from: record.timestamp),
                       let status = EmailLogStatus(rawValue: record.status),
                       let id = UUID(uuidString: record.id) else {
                     return nil
@@ -805,7 +819,7 @@ final class DatabaseService: Sendable {
     // MARK: - Embedding Operations
 
     nonisolated func saveMessageEmbedding(messageId: UUID, embedding: Data, model: String, dimension: Int) throws {
-        let now = isoFormatter.string(from: Date())
+        let now = Self.isoString(from: Date())
         let record = MessageEmbeddingRecord(
             message_id: messageId.uuidString,
             embedding: embedding,
@@ -825,7 +839,7 @@ final class DatabaseService: Sendable {
     }
 
     nonisolated func saveConversationEmbedding(conversationId: UUID, embedding: Data, model: String, dimension: Int) throws {
-        let now = isoFormatter.string(from: Date())
+        let now = Self.isoString(from: Date())
         let record = ConversationEmbeddingRecord(
             conversation_id: conversationId.uuidString,
             embedding: embedding,
@@ -881,7 +895,7 @@ final class DatabaseService: Sendable {
         return Array(results.prefix(limit))
     }
 
-    private func deserializeEmbedding(_ data: Data) -> [Float] {
+    private nonisolated func deserializeEmbedding(_ data: Data) -> [Float] {
         var embedding: [Float] = []
         embedding.reserveCapacity(data.count / 4)
 
@@ -905,7 +919,7 @@ final class DatabaseService: Sendable {
         model: String?,
         tokenCount: Int?
     ) throws {
-        let now = isoFormatter.string(from: Date())
+        let now = Self.isoString(from: Date())
         let record = ConversationSummaryRecord(
             id: UUID().uuidString,
             conversation_id: conversationId.uuidString,

oAI/Services/EmbeddingService.swift

@@ -71,7 +71,7 @@ enum EmbeddingProvider {
 // MARK: - Embedding Service
 
 final class EmbeddingService {
-    static let shared = EmbeddingService()
+    nonisolated static let shared = EmbeddingService()
 
     private let settings = SettingsService.shared
 
@@ -281,7 +281,7 @@ final class EmbeddingService {
     // MARK: - Similarity Calculation
 
     /// Calculate cosine similarity between two embeddings
-    func cosineSimilarity(_ a: [Float], _ b: [Float]) -> Float {
+    nonisolated func cosineSimilarity(_ a: [Float], _ b: [Float]) -> Float {
         guard a.count == b.count else {
             Log.api.error("Embedding dimension mismatch: \(a.count) vs \(b.count)")
             return 0.0

oAI/Services/EncryptionService.swift

@@ -29,19 +29,18 @@ import CryptoKit
 import IOKit
 
 class EncryptionService {
-    static let shared = EncryptionService()
+    nonisolated static let shared = EncryptionService()
 
-    private let salt = "oAI-secure-storage-v1" // App-specific salt
+    private let encryptionKey: SymmetricKey
-    private lazy var encryptionKey: SymmetricKey = {
-        deriveEncryptionKey()
-    }()
 
-    private init() {}
+    private init() {
+        self.encryptionKey = Self.deriveEncryptionKey()
+    }
 
     // MARK: - Public Interface
 
     /// Encrypt a string value
-    func encrypt(_ value: String) throws -> String {
+    nonisolated func encrypt(_ value: String) throws -> String {
         guard let data = value.data(using: .utf8) else {
             throw EncryptionError.invalidInput
         }
@@ -55,7 +54,7 @@ class EncryptionService {
     }
 
     /// Decrypt a string value
-    func decrypt(_ encryptedValue: String) throws -> String {
+    nonisolated func decrypt(_ encryptedValue: String) throws -> String {
         guard let data = Data(base64Encoded: encryptedValue) else {
             throw EncryptionError.invalidInput
         }
@@ -73,19 +72,17 @@ class EncryptionService {
     // MARK: - Key Derivation
 
     /// Derive encryption key from machine-specific data
-    private func deriveEncryptionKey() -> SymmetricKey {
+    private static func deriveEncryptionKey() -> SymmetricKey {
-        // Combine machine UUID + bundle ID + salt for key material
         let machineUUID = getMachineUUID()
         let bundleID = Bundle.main.bundleIdentifier ?? "com.oai.oAI"
+        let salt = "oAI-secure-storage-v1"
         let keyMaterial = "\(machineUUID)-\(bundleID)-\(salt)"
-
-        // Hash to create consistent 256-bit key
         let hash = SHA256.hash(data: Data(keyMaterial.utf8))
         return SymmetricKey(data: hash)
     }
 
     /// Get machine-specific UUID (IOPlatformUUID)
-    private func getMachineUUID() -> String {
+    private static func getMachineUUID() -> String {
         // Get IOPlatformUUID from IOKit
         let platformExpert = IOServiceGetMatchingService(
             kIOMainPortDefault,

oAI/Services/GitSyncService.swift

@@ -212,7 +212,7 @@ class GitSyncService {
 
                 // Check if conversation already exists (by ID)
                 if let existingId = UUID(uuidString: export.id) {
-                    if let existing = try? db.loadConversation(id: existingId) {
+                    if (try? db.loadConversation(id: existingId)) != nil {
                         // Already exists - skip
                         log.debug("Skipping existing conversation: \(export.name)")
                         skipped += 1

oAI/Services/SettingsService.swift

@@ -300,6 +300,24 @@ class SettingsService {
         }
     }
 
+    /// Input bar height in points — default 80
+    var inputBarHeight: Double {
+        get { cache["inputBarHeight"].flatMap(Double.init) ?? 80.0 }
+        set {
+            cache["inputBarHeight"] = String(newValue)
+            DatabaseService.shared.setSetting(key: "inputBarHeight", value: String(newValue))
+        }
+    }
+
+    /// Whether the sidebar is visible — default true
+    var sidebarVisible: Bool {
+        get { cache["sidebarVisible"] != "false" }
+        set {
+            cache["sidebarVisible"] = String(newValue)
+            DatabaseService.shared.setSetting(key: "sidebarVisible", value: String(newValue))
+        }
+    }
+
     // MARK: - MCP Permissions
 
     var mcpCanWriteFiles: Bool {

oAI/Services/UpdateCheckService.swift

@@ -35,6 +35,11 @@ final class UpdateCheckService {
 
     var updateAvailable: Bool = false
     var latestVersion: String? = nil
+    var downloadURL: URL? = nil
+
+    // Manual check state — drives the update alert in ContentView
+    var isCheckingManually: Bool = false
+    var manualCheckMessage: String? = nil
 
     private let apiURL = "https://gitlab.pm/api/v1/repos/rune/oai-swift/releases/latest"
     private let releasesURL = URL(string: "https://gitlab.pm/rune/oai-swift/releases")!
@@ -48,6 +53,24 @@ final class UpdateCheckService {
         }
     }
 
+    /// Manual check triggered from the Help menu. Non-blocking — result surfaces via manualCheckMessage.
+    func checkForUpdatesManually() {
+        guard !isCheckingManually else { return }
+        isCheckingManually = true
+        Task.detached(priority: .background) {
+            await self.performCheck()
+            let current = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? ""
+            await MainActor.run {
+                if self.updateAvailable, let v = self.latestVersion {
+                    self.manualCheckMessage = String(localized: "Version \(v) is available.")
+                } else {
+                    self.manualCheckMessage = String(localized: "You're up to date (v\(current)).")
+                }
+                self.isCheckingManually = false
+            }
+        }
+    }
+
     private func performCheck() async {
         guard let url = URL(string: apiURL) else { return }
 
@@ -69,9 +92,16 @@ final class UpdateCheckService {
         let latestVer = tagName.hasPrefix("v") ? String(tagName.dropFirst()) : tagName
         let currentVer = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "0.0.0"
 
+        // Extract direct DMG download URL from release assets
+        let dmgURL: URL? = (release["assets"] as? [[String: Any]])?
+            .first { ($0["name"] as? String ?? "").lowercased().hasSuffix(".dmg") }
+            .flatMap { $0["browser_download_url"] as? String }
+            .flatMap { URL(string: $0) }
+
         if isNewer(latestVer, than: currentVer) {
             await MainActor.run {
                 self.latestVersion = latestVer
+                self.downloadURL = dmgURL
                 self.updateAvailable = true
             }
         }

oAI/Utilities/Logging.swift

@@ -52,7 +52,7 @@ enum LogLevel: Int, Comparable, CaseIterable, Sendable {
         }
     }
 
-    static func < (lhs: LogLevel, rhs: LogLevel) -> Bool {
+    nonisolated static func < (lhs: LogLevel, rhs: LogLevel) -> Bool {
         lhs.rawValue < rhs.rawValue
     }
 }
@@ -60,7 +60,7 @@ enum LogLevel: Int, Comparable, CaseIterable, Sendable {
 // MARK: - File Logger
 
 final class FileLogger: @unchecked Sendable {
-    static let shared = FileLogger()
+    nonisolated static let shared = FileLogger()
 
     private let fileHandle: FileHandle?
     private let queue = DispatchQueue(label: "com.oai.filelogger")
@@ -70,8 +70,8 @@ final class FileLogger: @unchecked Sendable {
         return f
     }()
 
-    /// Current minimum log level (read from UserDefaults for thread safety)
+    /// Current minimum log level (backed by UserDefaults — thread-safe).
-    var minimumLevel: LogLevel {
+    nonisolated var minimumLevel: LogLevel {
         get {
             let raw = UserDefaults.standard.integer(forKey: "logLevel")
             return LogLevel(rawValue: raw) ?? .info
@@ -95,7 +95,7 @@ final class FileLogger: @unchecked Sendable {
         fileHandle?.seekToEndOfFile()
     }
 
-    func write(_ level: LogLevel, category: String, message: String) {
+    nonisolated func write(_ level: LogLevel, category: String, message: String) {
         guard level >= minimumLevel else { return }
         queue.async { [weak self] in
             guard let self, let fh = self.fileHandle else { return }
@@ -114,41 +114,43 @@ final class FileLogger: @unchecked Sendable {
 
 // MARK: - App Logger (wraps os.Logger + file)
 
-struct AppLogger {
+// os.Logger methods are @MainActor in macOS 27. AppLogger is Sendable and all methods are
-    let osLogger: Logger
+// nonisolated — FileLogger runs on its own serial queue, os.Logger dispatches to main actor.
+struct AppLogger: Sendable {
+    let subsystem: String
     let category: String
 
-    func debug(_ message: String) {
+    nonisolated func debug(_ message: String) {
         FileLogger.shared.write(.debug, category: category, message: message)
-        osLogger.debug("\(message, privacy: .public)")
+        Task { @MainActor [self] in Logger(subsystem: subsystem, category: category).debug("\(message, privacy: .public)") }
     }
 
-    func info(_ message: String) {
+    nonisolated func info(_ message: String) {
         FileLogger.shared.write(.info, category: category, message: message)
-        osLogger.info("\(message, privacy: .public)")
+        Task { @MainActor [self] in Logger(subsystem: subsystem, category: category).info("\(message, privacy: .public)") }
     }
 
-    func warning(_ message: String) {
+    nonisolated func warning(_ message: String) {
         FileLogger.shared.write(.warning, category: category, message: message)
-        osLogger.warning("\(message, privacy: .public)")
+        Task { @MainActor [self] in Logger(subsystem: subsystem, category: category).warning("\(message, privacy: .public)") }
     }
 
-    func error(_ message: String) {
+    nonisolated func error(_ message: String) {
         FileLogger.shared.write(.error, category: category, message: message)
-        osLogger.error("\(message, privacy: .public)")
+        Task { @MainActor [self] in Logger(subsystem: subsystem, category: category).error("\(message, privacy: .public)") }
     }
 }
 
 // MARK: - Log Namespace
 
 enum Log {
-    private static let subsystem = "com.oai.oAI"
+    private nonisolated static let subsystem = "com.oai.oAI"
 
-    static let api      = AppLogger(osLogger: Logger(subsystem: subsystem, category: "api"), category: "api")
+    nonisolated static let api      = AppLogger(subsystem: subsystem, category: "api")
-    static let db       = AppLogger(osLogger: Logger(subsystem: subsystem, category: "database"), category: "database")
+    nonisolated static let db       = AppLogger(subsystem: subsystem, category: "database")
-    static let mcp      = AppLogger(osLogger: Logger(subsystem: subsystem, category: "mcp"), category: "mcp")
+    nonisolated static let mcp      = AppLogger(subsystem: subsystem, category: "mcp")
-    static let settings = AppLogger(osLogger: Logger(subsystem: subsystem, category: "settings"), category: "settings")
+    nonisolated static let settings = AppLogger(subsystem: subsystem, category: "settings")
-    static let search   = AppLogger(osLogger: Logger(subsystem: subsystem, category: "search"), category: "search")
+    nonisolated static let search   = AppLogger(subsystem: subsystem, category: "search")
-    static let ui       = AppLogger(osLogger: Logger(subsystem: subsystem, category: "ui"), category: "ui")
+    nonisolated static let ui       = AppLogger(subsystem: subsystem, category: "ui")
-    static let general  = AppLogger(osLogger: Logger(subsystem: subsystem, category: "general"), category: "general")
+    nonisolated static let general  = AppLogger(subsystem: subsystem, category: "general")
 }

oAI/ViewModels/ChatViewModel.swift

@@ -934,10 +934,7 @@ Don't narrate future actions ("Let me...") - just use the tools.
                             messages[index].tokens = usage.completionTokens
                             if let model = selectedModel {
                                 let hasPricing = model.pricing.prompt > 0 || model.pricing.completion > 0
-                                let cost: Double? = hasPricing
+                                let cost: Double? = hasPricing ? calculateCost(usage: usage, pricing: model.pricing) : nil
-                                    ? (Double(usage.promptTokens) * model.pricing.prompt / 1_000_000) +
-                                      (Double(usage.completionTokens) * model.pricing.completion / 1_000_000)
-                                    : nil
                                 messages[index].cost = cost
                                 sessionStats.addMessage(inputTokens: usage.promptTokens, outputTokens: usage.completionTokens, cost: cost)
                             }
@@ -1001,10 +998,7 @@ Don't narrate future actions ("Let me...") - just use the tools.
                             messages[index].tokens = usage.completionTokens
                             if let model = selectedModel {
                                 let hasPricing = model.pricing.prompt > 0 || model.pricing.completion > 0
-                                let cost: Double? = hasPricing
+                                let cost: Double? = hasPricing ? calculateCost(usage: usage, pricing: model.pricing) : nil
-                                    ? (Double(usage.promptTokens) * model.pricing.prompt / 1_000_000) +
-                                      (Double(usage.completionTokens) * model.pricing.completion / 1_000_000)
-                                    : nil
                                 messages[index].cost = cost
                                 sessionStats.addMessage(inputTokens: usage.promptTokens, outputTokens: usage.completionTokens, cost: cost)
                             }
@@ -1313,7 +1307,7 @@ Don't narrate future actions ("Let me...") - just use the tools.
                 // Append the complete system prompt (default + custom)
                 systemContent += "\n\n---\n\n" + effectiveSystemPrompt
 
-                var messagesToSend: [Message] = memoryEnabled
+                let messagesToSend: [Message] = memoryEnabled
                     ? messages.filter { $0.role != .system }
                     : [messages.last(where: { $0.role == .user })].compactMap { $0 }
 
@@ -1529,10 +1523,7 @@ Don't narrate future actions ("Let me...") - just use the tools.
                 // Calculate cost
                 if let usage = totalUsage, let model = selectedModel {
                     let hasPricing = model.pricing.prompt > 0 || model.pricing.completion > 0
-                    let cost: Double? = hasPricing
+                    let cost: Double? = hasPricing ? calculateCost(usage: usage, pricing: model.pricing) : nil
-                        ? (Double(usage.promptTokens) * model.pricing.prompt / 1_000_000) +
-                          (Double(usage.completionTokens) * model.pricing.completion / 1_000_000)
-                        : nil
                     if let index = messages.lastIndex(where: { $0.id == assistantMessage.id }) {
                         messages[index].cost = cost
                     }
@@ -1659,7 +1650,7 @@ Don't narrate future actions ("Let me...") - just use the tools.
                 if isOverloaded && attempt < maxAttempts && !Task.isCancelled {
                     let delay = Double(1 << attempt) // 2s, 4s, 8s
                     Log.api.warning("API overloaded, retrying in \(Int(delay))s (attempt \(attempt)/\(maxAttempts - 1))...")
-                    await MainActor.run {
+                    _ = await MainActor.run {
                         showSystemMessage("⏳ API overloaded, retrying in \(Int(delay))s… (attempt \(attempt)/\(maxAttempts - 1))")
                     }
                     try await Task.sleep(nanoseconds: UInt64(delay * 1_000_000_000))
@@ -2180,6 +2171,18 @@ Don't narrate future actions ("Let me...") - just use the tools.
         }
     }
 
+    /// Cost for one response's usage, accounting for Anthropic-style prompt-cache
+    /// pricing when present: cache writes cost 1.25x the base input rate, cache
+    /// reads cost 0.1x. `usage.promptTokens` is already the uncached remainder —
+    /// it does not need cache tokens subtracted from it.
+    private func calculateCost(usage: ChatResponse.Usage, pricing: ModelInfo.Pricing) -> Double {
+        let inputCost = Double(usage.promptTokens) * pricing.prompt / 1_000_000
+        let cacheReadCost = Double(usage.cacheReadInputTokens ?? 0) * pricing.prompt * 0.1 / 1_000_000
+        let cacheWriteCost = Double(usage.cacheCreationInputTokens ?? 0) * pricing.prompt * 1.25 / 1_000_000
+        let outputCost = Double(usage.completionTokens) * pricing.completion / 1_000_000
+        return inputCost + cacheReadCost + cacheWriteCost + outputCost
+    }
+
     /// Summarize a chunk of messages into a concise summary
     private func summarizeMessageChunk(_ messages: [Message]) async -> String? {
         guard let provider = providerRegistry.getProvider(for: currentProvider),

oAI/Views/Main/ChatView.swift

@@ -37,12 +37,11 @@ struct ChatView: View {
             HeaderView(
                 provider: viewModel.currentProvider,
                 model: viewModel.selectedModel,
-                stats: viewModel.sessionStats,
-                onlineMode: viewModel.onlineMode,
-                mcpEnabled: viewModel.mcpEnabled,
-                mcpStatus: viewModel.mcpStatus,
                 onModelSelect: onModelSelect,
-                onProviderChange: onProviderChange
+                onProviderChange: onProviderChange,
+                conversationName: viewModel.currentConversationName,
+                hasUnsavedChanges: viewModel.hasUnsavedChanges,
+                onQuickSave: viewModel.quickSave
             )
 
             // Messages
@@ -85,10 +84,13 @@ struct ChatView: View {
             InputBar(
                 text: $viewModel.inputText,
                 isGenerating: viewModel.isGenerating,
-                mcpStatus: viewModel.mcpStatus,
                 onlineMode: viewModel.onlineMode,
                 onSend: viewModel.sendMessage,
-                onCancel: viewModel.cancelGeneration
+                onCancel: viewModel.cancelGeneration,
+                onToggleOnline: {
+                    viewModel.onlineMode.toggle()
+                    SettingsService.shared.onlineMode = viewModel.onlineMode
+                }
             )
 
             // Footer
@@ -96,7 +98,9 @@ struct ChatView: View {
                 stats: viewModel.sessionStats,
                 conversationName: viewModel.currentConversationName,
                 hasUnsavedChanges: viewModel.hasUnsavedChanges,
-                onQuickSave: viewModel.quickSave
+                onQuickSave: viewModel.quickSave,
+                onlineMode: viewModel.onlineMode,
+                mcpEnabled: viewModel.mcpEnabled
             )
         }
         .background(Color.oaiBackground)

oAI/Views/Main/ContentView.swift

@@ -2,7 +2,7 @@
 //  ContentView.swift
 //  oAI
 //
-//  Root navigation container
+//  Root navigation container — NavigationSplitView with collapsible sidebar
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 // Copyright (C) 2026 Rune Olsen
@@ -24,30 +24,34 @@
 
 
 import SwiftUI
+#if os(macOS)
+import Darwin   // uname, sysctlbyname
+#endif
 
 struct ContentView: View {
     @Environment(ChatViewModel.self) var chatViewModel
+    private var updateService = UpdateCheckService.shared
+    @State private var columnVisibility: NavigationSplitViewVisibility = .all
+    @State private var showIntelWarning = false
 
     var body: some View {
         @Bindable var vm = chatViewModel
-        NavigationStack {
+        NavigationSplitView(columnVisibility: $columnVisibility) {
+            SidebarView()
+                .navigationSplitViewColumnWidth(min: 200, ideal: 240, max: 340)
+        } detail: {
             ChatView(
                 onModelSelect: { chatViewModel.showModelSelector = true },
                 onProviderChange: { newProvider in
                     chatViewModel.changeProvider(newProvider)
                 }
             )
-            .navigationTitle("")
-            .toolbar {
-                #if os(macOS)
-                macOSToolbar
-                #endif
-            }
         }
         .frame(minWidth: 860, minHeight: 560)
         #if os(macOS)
         .onAppear {
             NSApplication.shared.windows.forEach { $0.tabbingMode = .disallowed }
+            checkIntelWarning()
         }
         .onKeyPress(.return, phases: .down) { press in
             if press.modifiers.contains(.command) {
@@ -65,7 +69,6 @@ struct ContentView: View {
                     let oldModel = chatViewModel.selectedModel
                     chatViewModel.selectModel(model)
                     chatViewModel.showModelSelector = false
-                    // Trigger auto-save on model switch
                     Task {
                         await chatViewModel.onModelSwitch(from: oldModel, to: model)
                     }
@@ -113,125 +116,56 @@ struct ContentView: View {
                 chatViewModel.inputText = input
             })
         }
+        .alert("Intel Mac Support Ending", isPresented: $showIntelWarning) {
+            Button("Got It") {
+                UserDefaults.standard.set(true, forKey: "hasShownIntelWarning")
+            }
+        } message: {
+            Text("oAI v2.4 is the last version to support Intel Macs and Rosetta. Starting with macOS 28, oAI will require Apple Silicon. Consider upgrading your Mac to continue receiving updates.")
+        }
+        .alert("Software Update", isPresented: Binding(
+            get: { updateService.manualCheckMessage != nil },
+            set: { if !$0 { updateService.manualCheckMessage = nil } }
+        )) {
+            if updateService.updateAvailable {
+                if let url = updateService.downloadURL {
+                    Button("Download v\(updateService.latestVersion ?? "")") {
+                        NSWorkspace.shared.open(url)
+                    }
+                }
+                Button("Release Page") { updateService.openReleasesPage() }
+                Button("Later", role: .cancel) { }
+            } else {
+                Button("OK", role: .cancel) { }
+            }
+        } message: {
+            Text(updateService.manualCheckMessage ?? "")
+        }
     }
 
     #if os(macOS)
-    @ToolbarContentBuilder
+    private func checkIntelWarning() {
-    private var macOSToolbar: some ToolbarContent {
+        guard !UserDefaults.standard.bool(forKey: "hasShownIntelWarning") else { return }
-        let settings = SettingsService.shared
+        guard isIntelNative || isRosetta else { return }
-        let showLabels = settings.showToolbarLabels
+        showIntelWarning = true
-        let iconSize = settings.toolbarIconSize
+    }
 
-        ToolbarItemGroup(placement: .automatic) {
+    private var isIntelNative: Bool {
-            // New conversation
+        var systemInfo = utsname()
-            Button(action: { chatViewModel.newConversation() }) {
+        uname(&systemInfo)
-                ToolbarLabel(title: "New Chat", systemImage: "square.and.pencil", showLabels: showLabels, iconSize: iconSize)
+        let machine = withUnsafeBytes(of: &systemInfo.machine) {
-            }
+            String(cString: $0.bindMemory(to: CChar.self).baseAddress!)
-            .keyboardShortcut("n", modifiers: .command)
-            .help("New conversation")
-
-            Button(action: { chatViewModel.showConversations = true }) {
-                ToolbarLabel(title: "Conversations", systemImage: "clock.arrow.circlepath", showLabels: showLabels, iconSize: iconSize)
-            }
-            .keyboardShortcut("l", modifiers: .command)
-            .help("Saved conversations (Cmd+L)")
-
-            Button(action: { chatViewModel.showHistory = true }) {
-                ToolbarLabel(title: "History", systemImage: "list.bullet", showLabels: showLabels, iconSize: iconSize)
-            }
-            .keyboardShortcut("h", modifiers: .command)
-            .help("Command history (Cmd+H)")
-
-            Spacer()
-
-            Button(action: { chatViewModel.showModelSelector = true }) {
-                ToolbarLabel(title: "Model", systemImage: "cpu", showLabels: showLabels, iconSize: iconSize)
-            }
-            .keyboardShortcut("m", modifiers: .command)
-            .help("Select AI model (Cmd+M)")
-
-            Button(action: {
-                if let model = chatViewModel.selectedModel {
-                    chatViewModel.modelInfoTarget = model
-                }
-            }) {
-                ToolbarLabel(title: "Info", systemImage: "info.circle", showLabels: showLabels, iconSize: iconSize)
-            }
-            .keyboardShortcut("i", modifiers: .command)
-            .help("Model info (Cmd+I)")
-            .disabled(chatViewModel.selectedModel == nil)
-
-            Button(action: { chatViewModel.showStats = true }) {
-                ToolbarLabel(title: "Stats", systemImage: "chart.bar", showLabels: showLabels, iconSize: iconSize)
-            }
-            .help("Session statistics")
-
-            Button(action: { chatViewModel.showCredits = true }) {
-                ToolbarLabel(title: "Credits", systemImage: "creditcard", showLabels: showLabels, iconSize: iconSize)
-            }
-            .help("Check API credits")
-
-            Spacer()
-
-            Button(action: { chatViewModel.showSettings = true }) {
-                ToolbarLabel(title: "Settings", systemImage: "gearshape", showLabels: showLabels, iconSize: iconSize)
-            }
-            .keyboardShortcut(",", modifiers: .command)
-            .help("Settings (Cmd+,)")
-
-            Button(action: { chatViewModel.showHelp = true }) {
-                ToolbarLabel(title: "Help", systemImage: "questionmark.circle", showLabels: showLabels, iconSize: iconSize)
-            }
-            .keyboardShortcut("/", modifiers: .command)
-            .help("Help & commands (Cmd+/)")
         }
+        return machine.contains("x86_64")
+    }
+
+    private var isRosetta: Bool {
+        var ret: Int32 = 0
+        var size = MemoryLayout<Int32>.size
+        sysctlbyname("sysctl.proc_translated", &ret, &size, nil, 0)
+        return ret == 1
     }
     #endif
-
-}
-
-// Helper view for toolbar labels
-struct ToolbarLabel: View {
-    let title: LocalizedStringKey
-    let systemImage: String
-    let showLabels: Bool
-    let iconSize: Double
-
-    // imageScale for the original range (≤32); explicit font size for the new extra-large range (>32)
-    private var scale: Image.Scale {
-        switch iconSize {
-        case ...18: return .small
-        case 19...24: return .medium
-        default: return .large
-        }
-    }
-
-    var body: some View {
-        if iconSize > 32 {
-            // Extra-large: explicit font size above the system .large ceiling
-            // Offset by 16 so slider 34→18pt, 36→20pt, 38→22pt, 40→24pt
-            if showLabels {
-                Label(title, systemImage: systemImage)
-                    .labelStyle(.titleAndIcon)
-                    .font(.system(size: iconSize - 16))
-            } else {
-                Label(title, systemImage: systemImage)
-                    .labelStyle(.iconOnly)
-                    .font(.system(size: iconSize - 16))
-            }
-        } else {
-            // Original behaviour — imageScale keeps existing look intact
-            if showLabels {
-                Label(title, systemImage: systemImage)
-                    .labelStyle(.titleAndIcon)
-                    .imageScale(scale)
-            } else {
-                Label(title, systemImage: systemImage)
-                    .labelStyle(.iconOnly)
-                    .imageScale(scale)
-            }
-        }
-    }
 }
 
 #Preview {

oAI/Views/Main/FooterView.swift

@@ -30,15 +30,22 @@ struct FooterView: View {
     let conversationName: String?
     let hasUnsavedChanges: Bool
     let onQuickSave: (() -> Void)?
+    let onlineMode: Bool
+    let mcpEnabled: Bool
+    private let settings = SettingsService.shared
 
     init(stats: SessionStats,
          conversationName: String? = nil,
          hasUnsavedChanges: Bool = false,
-         onQuickSave: (() -> Void)? = nil) {
+         onQuickSave: (() -> Void)? = nil,
+         onlineMode: Bool = false,
+         mcpEnabled: Bool = false) {
         self.stats = stats
         self.conversationName = conversationName
         self.hasUnsavedChanges = hasUnsavedChanges
         self.onQuickSave = onQuickSave
+        self.onlineMode = onlineMode
+        self.mcpEnabled = mcpEnabled
     }
 
     var body: some View {
@@ -71,26 +78,26 @@ struct FooterView: View {
 
             Spacer()
 
-            // Save indicator (only when chat has messages)
+            // Status pills — Online, MCP, Sync
-            if stats.messageCount > 0 {
+            #if os(macOS)
-                SaveIndicator(
+            HStack(spacing: 6) {
-                    conversationName: conversationName,
+                if onlineMode {
-                    hasUnsavedChanges: hasUnsavedChanges,
+                    StatusPill(icon: "globe", label: "Online", color: .green)
-                    onSave: onQuickSave
+                }
-                )
+                if mcpEnabled {
+                    StatusPill(icon: "folder", label: "MCP", color: .blue)
+                }
+                if settings.syncEnabled && settings.syncAutoSave {
+                    SyncStatusPill()
+                }
             }
+            #endif
 
-            // Update available badge
+            // Update available badge (shows only when an update exists — no version number)
             #if os(macOS)
             UpdateBadge()
             #endif
 
-            // Shortcuts hint
-            #if os(macOS)
-            Text("⌘N New • ⌘M Model • ⌘S Save")
-                .font(.caption2)
-                .foregroundColor(.oaiSecondary)
-            #endif
         }
         .padding(.horizontal, 16)
         .padding(.vertical, 8)
@@ -242,7 +249,6 @@ struct SyncStatusFooter: View {
 
 struct UpdateBadge: View {
     private let updater = UpdateCheckService.shared
-    private let currentVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "?"
 
     var body: some View {
         if updater.updateAvailable {
@@ -258,10 +264,6 @@ struct UpdateBadge: View {
             }
             .buttonStyle(.plain)
             .help("A new version is available — click to open the releases page")
-        } else {
-            Text("v\(currentVersion)")
-                .font(.caption2)
-                .foregroundColor(.oaiSecondary)
         }
     }
 }

oAI/Views/Main/HeaderView.swift

@@ -2,7 +2,8 @@
 //  HeaderView.swift
 //  oAI
 //
-//  Header bar with provider, model, and stats
+//  Slim header — provider, model name, star only.
+//  Status pills and stats live in SidebarView and FooterView respectively.
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 // Copyright (C) 2026 Rune Olsen
@@ -28,150 +29,29 @@ import SwiftUI
 struct HeaderView: View {
     let provider: Settings.Provider
     let model: ModelInfo?
-    let stats: SessionStats
-    let onlineMode: Bool
-    let mcpEnabled: Bool
-    let mcpStatus: String?
     let onModelSelect: () -> Void
     let onProviderChange: (Settings.Provider) -> Void
+    var conversationName: String? = nil
+    var hasUnsavedChanges: Bool = false
+    var onQuickSave: (() -> Void)? = nil
     private let settings = SettingsService.shared
     private let registry = ProviderRegistry.shared
-    private let gitSync = GitSyncService.shared
 
     var body: some View {
-        HStack(spacing: 20) {
+        ZStack {
-            // Provider picker dropdown — only shows configured providers
+            // Left: provider + model + star
-            Menu {
+            HStack(spacing: 12) {
-                ForEach(registry.configuredProviders, id: \.self) { p in
+                providerMenu
-                    Button {
+                modelButton
-                        onProviderChange(p)
+                starButton
-                    } label: {
+                Spacer()
-                        HStack {
-                            Image(systemName: p.iconName)
-                            Text(p.displayName)
-                            if p == provider {
-                                Image(systemName: "checkmark")
-                            }
-                        }
-                    }
-                }
-            } label: {
-                HStack(spacing: 4) {
-                    Image(systemName: provider.iconName)
-                        .font(.system(size: settings.guiTextSize - 2))
-                    Text(provider.displayName)
-                        .font(.system(size: settings.guiTextSize - 2, weight: .medium))
-                    Image(systemName: "chevron.up.chevron.down")
-                        .font(.system(size: 8))
-                        .opacity(0.7)
-                }
-                .foregroundColor(.white)
-                .padding(.horizontal, 8)
-                .padding(.vertical, 4)
-                .background(Color.providerColor(provider))
-                .cornerRadius(4)
-            }
-            .menuStyle(.borderlessButton)
-            .fixedSize()
-            .help("Switch provider")
-
-            // Model info (clickable → model selector)
-            Button(action: onModelSelect) {
-                if let model = model {
-                    HStack(spacing: 6) {
-                        Text(model.name)
-                            .font(.system(size: settings.guiTextSize, weight: .medium))
-                            .foregroundColor(.oaiPrimary)
-
-                        // Capability badges
-                        HStack(spacing: 3) {
-                            if model.capabilities.vision {
-                                Image(systemName: "eye")
-                                    .font(.system(size: 9))
-                                    .foregroundColor(.oaiSecondary)
-                            }
-                            if model.capabilities.tools {
-                                Image(systemName: "wrench")
-                                    .font(.system(size: 9))
-                                    .foregroundColor(.oaiSecondary)
-                            }
-                            if model.capabilities.online {
-                                Image(systemName: "globe")
-                                    .font(.system(size: 9))
-                                    .foregroundColor(.oaiSecondary)
-                            }
-                            if model.capabilities.imageGeneration {
-                                Image(systemName: "paintbrush")
-                                    .font(.system(size: 9))
-                                    .foregroundColor(.oaiSecondary)
-                            }
-                        }
-
-                        Image(systemName: "chevron.down")
-                            .font(.caption2)
-                            .foregroundColor(.oaiSecondary)
-                    }
-                } else {
-                    HStack(spacing: 4) {
-                        Text("No model selected")
-                            .font(.system(size: settings.guiTextSize))
-                            .foregroundColor(.oaiSecondary)
-
-                        Image(systemName: "chevron.down")
-                            .font(.caption2)
-                            .foregroundColor(.oaiSecondary)
-                    }
-                }
-            }
-            .buttonStyle(.plain)
-            .help("Select model")
-
-            if let model = model {
-                let isFav = settings.favoriteModelIds.contains(model.id)
-                Button(action: { settings.toggleFavoriteModel(model.id) }) {
-                    Image(systemName: isFav ? "star.fill" : "star")
-                        .font(.system(size: settings.guiTextSize - 3))
-                        .foregroundColor(isFav ? .yellow : .oaiSecondary)
-                }
-                .buttonStyle(.plain)
-                .help(isFav ? "Remove from favorites" : "Add to favorites")
             }
 
-            Spacer()
+            // Center: conversation title (macOS document-title style)
-
+            conversationTitle
-            // Status indicators
-            HStack(spacing: 8) {
-                if model?.capabilities.imageGeneration == true {
-                    StatusPill(icon: "paintbrush", label: "Image", color: .purple)
-                }
-                if onlineMode {
-                    StatusPill(icon: "globe", label: "Online", color: .green)
-                }
-                if mcpEnabled {
-                    StatusPill(icon: "folder", label: "MCP", color: .blue)
-                }
-                if settings.syncEnabled && settings.syncAutoSave {
-                    SyncStatusPill()
-                }
-            }
-
-            // Divider between status and stats
-            if onlineMode || mcpEnabled || model?.capabilities.imageGeneration == true || (settings.syncEnabled && settings.syncAutoSave) {
-                Divider()
-                    .frame(height: 16)
-                    .opacity(0.5)
-            }
-
-            // Quick stats
-            HStack(spacing: 16) {
-                StatItem(icon: "message", value: "\(stats.messageCount)")
-                StatItem(icon: "arrow.up.arrow.down", value: stats.totalTokensDisplay)
-                StatItem(icon: "dollarsign", value: stats.totalCostDisplay)
-            }
-            .font(.caption)
         }
         .padding(.horizontal, 16)
-        .padding(.vertical, 10)
+        .padding(.vertical, 8)
         .background(.ultraThinMaterial)
         .overlay(
             Rectangle()
@@ -180,25 +60,123 @@ struct HeaderView: View {
             alignment: .bottom
         )
     }
-}
 
-struct StatItem: View {
+    // MARK: - Conversation title (center)
-    let icon: String
-    let value: String
-    private let settings = SettingsService.shared
 
-    var body: some View {
+    @ViewBuilder
-        HStack(spacing: 4) {
+    private var conversationTitle: some View {
-            Image(systemName: icon)
+        if let name = conversationName {
-                .font(.system(size: settings.guiTextSize - 3))
+            Button(action: { if hasUnsavedChanges { onQuickSave?() } }) {
-                .foregroundColor(.oaiSecondary)
+                HStack(spacing: 5) {
-            Text(value)
+                    if hasUnsavedChanges {
-                .font(.system(size: settings.guiTextSize - 1, weight: .medium))
+                        Circle()
-                .foregroundColor(.oaiPrimary)
+                            .fill(Color.orange)
+                            .frame(width: 6, height: 6)
+                    }
+                    Text(name)
+                        .font(.system(size: settings.guiTextSize - 1, weight: .medium))
+                        .foregroundColor(.oaiPrimary)
+                        .lineLimit(1)
+                        .frame(maxWidth: 300)
+                }
+            }
+            .buttonStyle(.plain)
+            .disabled(!hasUnsavedChanges)
+            .help(hasUnsavedChanges ? "Unsaved changes — click to save" : "Saved")
+            .animation(.easeInOut(duration: 0.2), value: hasUnsavedChanges)
+            .animation(.easeInOut(duration: 0.2), value: name)
+        }
+    }
+
+    // MARK: - Subviews (extracted so ZStack stays readable)
+
+    private var providerMenu: some View {
+        Menu {
+            ForEach(registry.configuredProviders, id: \.self) { p in
+                Button {
+                    onProviderChange(p)
+                } label: {
+                    HStack {
+                        Image(systemName: p.iconName)
+                        Text(p.displayName)
+                        if p == provider { Image(systemName: "checkmark") }
+                    }
+                }
+            }
+        } label: {
+            HStack(spacing: 4) {
+                Image(systemName: provider.iconName)
+                    .font(.system(size: settings.guiTextSize - 2))
+                Text(provider.displayName)
+                    .font(.system(size: settings.guiTextSize - 2, weight: .medium))
+                Image(systemName: "chevron.up.chevron.down")
+                    .font(.system(size: 8))
+                    .opacity(0.7)
+            }
+            .foregroundColor(.white)
+            .padding(.horizontal, 8)
+            .padding(.vertical, 4)
+            .background(Color.providerColor(provider))
+            .cornerRadius(4)
+        }
+        .menuStyle(.borderlessButton)
+        .fixedSize()
+        .help("Switch provider")
+    }
+
+    private var modelButton: some View {
+        Button(action: onModelSelect) {
+            if let model = model {
+                HStack(spacing: 6) {
+                    Text(model.name)
+                        .font(.system(size: settings.guiTextSize, weight: .medium))
+                        .foregroundColor(.oaiPrimary)
+                    HStack(spacing: 3) {
+                        if model.capabilities.vision {
+                            Image(systemName: "eye").font(.system(size: 9)).foregroundColor(.oaiSecondary)
+                        }
+                        if model.capabilities.tools {
+                            Image(systemName: "wrench").font(.system(size: 9)).foregroundColor(.oaiSecondary)
+                        }
+                        if model.capabilities.online {
+                            Image(systemName: "globe").font(.system(size: 9)).foregroundColor(.oaiSecondary)
+                        }
+                        if model.capabilities.imageGeneration {
+                            Image(systemName: "paintbrush").font(.system(size: 9)).foregroundColor(.oaiSecondary)
+                        }
+                    }
+                    Image(systemName: "chevron.down").font(.caption2).foregroundColor(.oaiSecondary)
+                }
+            } else {
+                HStack(spacing: 4) {
+                    Text("No model selected")
+                        .font(.system(size: settings.guiTextSize))
+                        .foregroundColor(.oaiSecondary)
+                    Image(systemName: "chevron.down").font(.caption2).foregroundColor(.oaiSecondary)
+                }
+            }
+        }
+        .buttonStyle(.plain)
+        .help("Select model")
+    }
+
+    @ViewBuilder
+    private var starButton: some View {
+        if let model = model {
+            let isFav = settings.favoriteModelIds.contains(model.id)
+            Button(action: { settings.toggleFavoriteModel(model.id) }) {
+                Image(systemName: isFav ? "star.fill" : "star")
+                    .font(.system(size: settings.guiTextSize - 3))
+                    .foregroundColor(isFav ? .yellow : .oaiSecondary)
+            }
+            .buttonStyle(.plain)
+            .help(isFav ? "Remove from favorites" : "Add to favorites")
         }
     }
 }
 
+// MARK: - Status Pills (used by SidebarView)
+
 struct StatusPill: View {
     let icon: String
     let label: LocalizedStringKey
@@ -284,15 +262,6 @@ struct SyncStatusPill: View {
         HeaderView(
             provider: .openrouter,
             model: ModelInfo.mockModels.first,
-            stats: SessionStats(
-                totalInputTokens: 125,
-                totalOutputTokens: 434,
-                totalCost: 0.00111,
-                messageCount: 4
-            ),
-            onlineMode: true,
-            mcpEnabled: true,
-            mcpStatus: "MCP",
             onModelSelect: {},
             onProviderChange: { _ in }
         )

oAI/Views/Main/InputBar.swift

@@ -2,7 +2,7 @@
 //  InputBar.swift
 //  oAI
 //
-//  Message input bar with status indicators
+//  Message input bar with resizable height and online toggle
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 // Copyright (C) 2026 Rune Olsen
@@ -24,19 +24,30 @@
 
 
 import SwiftUI
+#if os(macOS)
+import AppKit
+#endif
 
 struct InputBar: View {
     @Binding var text: String
     let isGenerating: Bool
-    let mcpStatus: String?
     let onlineMode: Bool
     let onSend: () -> Void
     let onCancel: () -> Void
+    let onToggleOnline: () -> Void
 
     private let settings = SettingsService.shared
+
+    // Resizable input height — persisted to settings
+    @State private var inputHeight: CGFloat = CGFloat(SettingsService.shared.inputBarHeight)
+    @State private var dragStartHeight: CGFloat = CGFloat(SettingsService.shared.inputBarHeight)
+
     @State private var showCommandDropdown = false
     @State private var selectedSuggestionIndex: Int = 0
-    @FocusState private var isInputFocused: Bool
+    @State private var isInputFocused: Bool = false
+
+    private static let minInputHeight: CGFloat = 56
+    private static let maxInputHeight: CGFloat = 320
 
     /// Commands that execute immediately without additional arguments
     private static let immediateCommands: Set<String> = [
@@ -56,121 +67,108 @@ struct InputBar: View {
                     CommandSuggestionsView(
                         searchText: text,
                         selectedIndex: selectedSuggestionIndex,
-                        onSelect: { command in
+                        onSelect: selectCommand
-                            selectCommand(command)
-                        }
                     )
                     .frame(width: 400)
                     .frame(maxHeight: 200)
                     .transition(.move(edge: .bottom).combined(with: .opacity))
                     Spacer()
                 }
-                .padding(.leading, 96) // Align with input box (status badges + spacing)
+                .padding(.leading, 16)
             }
 
-            // Input area
+            // Drag-to-resize handle
-            HStack(alignment: .bottom, spacing: 12) {
+            dragHandle
-                // Status indicators
-                HStack(spacing: 6) {
-                    if let mcp = mcpStatus {
-                        StatusBadge(text: mcp, color: .blue)
-                    }
-                    if onlineMode {
-                        StatusBadge(text: "🌐", color: .green)
-                    }
-                }
-                .frame(width: 80, alignment: .leading)
 
-                // Text input
+            // Input row
+            HStack(alignment: .bottom, spacing: 12) {
+                // Text input with globe toggle in bottom-left corner
                 ZStack(alignment: .topLeading) {
+                    // Placeholder
                     if text.isEmpty {
                         Text("Type a message or / for commands...")
                             .font(.system(size: settings.inputTextSize))
                             .foregroundColor(.oaiSecondary)
                             .padding(.horizontal, 12)
-                            .padding(.vertical, 10)
+                            .padding(.top, 10)
+                            .allowsHitTesting(false)
                     }
 
-                    TextEditor(text: $text)
+                    // Editor — fills the fixed-height box, bottom area reserved for globe
-                        .font(.system(size: settings.inputTextSize))
+                    NativeTextEditor(
-                        .foregroundColor(.oaiPrimary)
+                        text: $text,
-                        .scrollContentBackground(.hidden)
+                        font: .systemFont(ofSize: settings.inputTextSize),
-                        .frame(minHeight: 44, maxHeight: 120)
+                        textColor: NSColor(Color.oaiPrimary),
-                        .padding(.horizontal, 8)
+                        isFocused: isInputFocused,
-                        .padding(.vertical, 6)
+                        onReturn: {
-                        .focused($isInputFocused)
-                        .onChange(of: text) {
-                            showCommandDropdown = text.hasPrefix("/")
-                            selectedSuggestionIndex = 0
-                        }
-                        #if os(macOS)
-                        .onKeyPress(.upArrow) {
-                            // Navigate command dropdown
-                            if showCommandDropdown && selectedSuggestionIndex > 0 {
-                                selectedSuggestionIndex -= 1
-                                return .handled
-                            }
-                            return .ignored
-                        }
-                        .onKeyPress(.downArrow) {
-                            // Navigate command dropdown
-                            if showCommandDropdown {
-                                let count = CommandSuggestionsView.filteredCommands(for: text).count
-                                if selectedSuggestionIndex < count - 1 {
-                                    selectedSuggestionIndex += 1
-                                    return .handled
-                                }
-                            }
-                            return .ignored
-                        }
-                        .onKeyPress(.escape) {
-                            // If command dropdown is showing, close it
-                            if showCommandDropdown {
-                                showCommandDropdown = false
-                                return .handled
-                            }
-                            // If model is generating, cancel it
-                            if isGenerating {
-                                onCancel()
-                                return .handled
-                            }
-                            return .ignored
-                        }
-                        .onKeyPress(.return, phases: .down) { press in
-                            // Shift+Return: always insert newline (let system handle)
-                            if press.modifiers.contains(.shift) {
-                                return .ignored
-                            }
-
-                            // If command dropdown is showing, select the highlighted command
                             if showCommandDropdown {
                                 let suggestions = CommandSuggestionsView.filteredCommands(for: text)
                                 if !suggestions.isEmpty && selectedSuggestionIndex < suggestions.count {
                                     selectCommand(suggestions[selectedSuggestionIndex].command)
-                                    return .handled
+                                    return true
                                 }
                             }
-                            // Return (plain or with Cmd): send message
+                            if !text.isEmpty { onSend(); return true }
-                            if !text.isEmpty {
+                            return true
-                                onSend()
+                        },
-                                return .handled
+                        onEscape: {
+                            if showCommandDropdown { showCommandDropdown = false; return true }
+                            if isGenerating { onCancel(); return true }
+                            return false
+                        },
+                        onUpArrow: {
+                            if showCommandDropdown && selectedSuggestionIndex > 0 {
+                                selectedSuggestionIndex -= 1; return true
                             }
-                            // Empty text: do nothing
+                            return false
-                            return .handled
+                        },
+                        onDownArrow: {
+                            if showCommandDropdown {
+                                let count = CommandSuggestionsView.filteredCommands(for: text).count
+                                if selectedSuggestionIndex < count - 1 {
+                                    selectedSuggestionIndex += 1; return true
+                                }
+                            }
+                            return false
+                        },
+                        onFocusChange: { focused in isInputFocused = focused }
+                    )
+                    .frame(maxWidth: .infinity, maxHeight: .infinity)
+                    .onChange(of: text) {
+                        showCommandDropdown = text.hasPrefix("/")
+                        selectedSuggestionIndex = 0
+                    }
+                    .padding(.bottom, 30)
+
+                    // Online / offline toggle — bottom-left of the text box
+                    VStack {
+                        Spacer()
+                        HStack {
+                            Button(action: onToggleOnline) {
+                                Image(systemName: onlineMode ? "globe" : "network.slash")
+                                    .font(.system(size: 13, weight: .medium))
+                                    .foregroundStyle(onlineMode ? Color.green : Color.secondary)
+                                    .padding(8)
+                            }
+                            .buttonStyle(.plain)
+                            .help(onlineMode
+                                  ? "Online mode on — click to go offline"
+                                  : "Offline — click to go online")
+                            Spacer()
                         }
-                        #endif
+                    }
                 }
+                .frame(height: inputHeight)
                 .background(Color.oaiSurface)
                 .cornerRadius(8)
                 .overlay(
                     RoundedRectangle(cornerRadius: 8)
                         .stroke(isInputFocused ? Color.oaiAccent : Color.oaiBorder, lineWidth: 1)
                 )
-                
+
-                // Action buttons
+                // Send / stop + attach buttons
                 VStack(spacing: 8) {
                     #if os(macOS)
-                    // File attach button
                     Button(action: pickFile) {
                         Image(systemName: "paperclip")
                             .font(.title2)
@@ -209,21 +207,47 @@ struct InputBar: View {
         }
     }
 
+    // MARK: - Drag handle
+
+    private var dragHandle: some View {
+        Color.clear
+            .frame(height: 8)
+            .frame(maxWidth: .infinity)
+            .contentShape(Rectangle())
+            .overlay {
+                Capsule()
+                    .fill(Color.secondary.opacity(0.25))
+                    .frame(width: 36, height: 3)
+            }
+            .gesture(
+                DragGesture(minimumDistance: 1)
+                    .onChanged { value in
+                        let proposed = dragStartHeight - value.translation.height
+                        inputHeight = max(Self.minInputHeight, min(Self.maxInputHeight, proposed))
+                    }
+                    .onEnded { _ in
+                        dragStartHeight = inputHeight
+                        settings.inputBarHeight = Double(inputHeight)
+                    }
+            )
+            #if os(macOS)
+            .onHover { hovering in
+                if hovering { NSCursor.resizeUpDown.push() } else { NSCursor.pop() }
+            }
+            #endif
+    }
+
+    // MARK: - Helpers
+
     private func selectCommand(_ command: String) {
         showCommandDropdown = false
         if Self.immediateCommands.contains(command) {
-            // Execute immediately
             text = command
             onSend()
         } else if let shortcut = SettingsService.shared.userShortcuts.first(where: { $0.command == command }) {
-            if shortcut.needsInput {
+            text = shortcut.needsInput ? command + " " : command
-                text = command + " "
+            if !shortcut.needsInput { onSend() }
-            } else {
-                text = command
-                onSend()
-            }
         } else {
-            // Put in input for user to complete
             text = command + " "
         }
     }
@@ -235,36 +259,14 @@ struct InputBar: View {
         panel.canChooseDirectories = false
         panel.canChooseFiles = true
         panel.message = "Select files to attach"
-
         guard panel.runModal() == .OK else { return }
-
+        let attachmentText = panel.urls.map { "@<\($0.path)>" }.joined(separator: " ")
-        let paths = panel.urls.map { $0.path }
+        text = text.isEmpty ? attachmentText + " " : text + " " + attachmentText
-        // Use @<path> format (angle brackets) to safely handle paths with spaces
-        let attachmentText = paths.map { "@<\($0)>" }.joined(separator: " ")
-
-        if text.isEmpty {
-            text = attachmentText + " "
-        } else {
-            text += " " + attachmentText
-        }
     }
     #endif
 }
 
-struct StatusBadge: View {
+// MARK: - Command suggestions
-    let text: String
-    let color: Color
-    
-    var body: some View {
-        Text(text)
-            .font(.caption)
-            .foregroundColor(color)
-            .padding(.horizontal, 6)
-            .padding(.vertical, 3)
-            .background(color.opacity(0.15))
-            .cornerRadius(4)
-    }
-}
 
 struct CommandSuggestionsView: View {
     let searchText: String
@@ -304,10 +306,9 @@ struct CommandSuggestionsView: View {
     ]
 
     static func allCommands() -> [(command: String, description: LocalizedStringKey)] {
-        let shortcuts = SettingsService.shared.userShortcuts.map { s in
+        SettingsService.shared.userShortcuts.map { s in
             (s.command, LocalizedStringKey("⚡ \(s.description)"))
-        }
+        } + builtInCommands
-        return builtInCommands + shortcuts
     }
 
     static func filteredCommands(for searchText: String) -> [(command: String, description: LocalizedStringKey)] {
@@ -344,26 +345,20 @@ struct CommandSuggestionsView: View {
                         .id(suggestion.command)
 
                         if index < suggestions.count - 1 {
-                            Divider()
+                            Divider().background(Color.oaiBorder)
-                                .background(Color.oaiBorder)
                         }
                     }
                 }
             }
             .onChange(of: selectedIndex) {
                 if selectedIndex < suggestions.count {
-                    withAnimation {
+                    withAnimation { proxy.scrollTo(suggestions[selectedIndex].command, anchor: .center) }
-                        proxy.scrollTo(suggestions[selectedIndex].command, anchor: .center)
-                    }
                 }
             }
         }
         .background(Color.oaiSurface)
         .cornerRadius(8)
-        .overlay(
+        .overlay(RoundedRectangle(cornerRadius: 8).stroke(Color.oaiBorder, lineWidth: 1))
-            RoundedRectangle(cornerRadius: 8)
-                .stroke(Color.oaiBorder, lineWidth: 1)
-        )
     }
 }
 
@@ -373,10 +368,10 @@ struct CommandSuggestionsView: View {
         InputBar(
             text: .constant(""),
             isGenerating: false,
-            mcpStatus: "📁 Files",
             onlineMode: true,
             onSend: {},
-            onCancel: {}
+            onCancel: {},
+            onToggleOnline: {}
         )
     }
     .background(Color.oaiBackground)

oAI/Views/Main/NativeTextEditor.swift

@@ -0,0 +1,171 @@
+//
+//  NativeTextEditor.swift
+//  oAI
+//
+//  NSViewRepresentable text editor with correct Enter-key semantics:
+//  plain Enter → send, Shift+Enter or Cmd+Enter → newline.
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// Copyright (C) 2026 Rune Olsen
+
+import SwiftUI
+import AppKit
+
+struct NativeTextEditor: NSViewRepresentable {
+    @Binding var text: String
+    var font: NSFont
+    var textColor: NSColor
+    var isFocused: Bool
+
+    /// Plain Enter (no modifiers). Return true if the event was consumed.
+    var onReturn: () -> Bool
+    /// Escape key. Return true if consumed.
+    var onEscape: () -> Bool
+    /// Up arrow. Return true if consumed.
+    var onUpArrow: () -> Bool
+    /// Down arrow. Return true if consumed.
+    var onDownArrow: () -> Bool
+    /// Called when the view gains or loses first-responder status.
+    var onFocusChange: (Bool) -> Void
+
+    // MARK: - NSViewRepresentable
+
+    func makeNSView(context: Context) -> NSScrollView {
+        let scrollView = NSScrollView()
+        scrollView.hasVerticalScroller = false
+        scrollView.hasHorizontalScroller = false
+        scrollView.drawsBackground = false
+        scrollView.borderType = .noBorder
+
+        let tv = context.coordinator.textView
+        tv.delegate = context.coordinator
+        tv.isEditable = true
+        tv.isRichText = false
+        tv.drawsBackground = false
+        tv.backgroundColor = .clear
+        tv.isAutomaticQuoteSubstitutionEnabled = false
+        tv.isAutomaticDashSubstitutionEnabled = false
+        tv.isAutomaticSpellingCorrectionEnabled = true
+        tv.isContinuousSpellCheckingEnabled = true
+        tv.allowsUndo = true
+        tv.isVerticallyResizable = true
+        tv.isHorizontallyResizable = false
+        tv.autoresizingMask = [.width]
+        tv.textContainer?.widthTracksTextView = true
+        tv.textContainerInset = NSSize(width: 8, height: 6)
+
+        scrollView.documentView = tv
+        return scrollView
+    }
+
+    func updateNSView(_ scrollView: NSScrollView, context: Context) {
+        let tv = context.coordinator.textView
+        let coord = context.coordinator
+
+        // Update text only when it differs (avoids caret-jumping on every keystroke)
+        if tv.string != text {
+            let sel = tv.selectedRanges
+            tv.string = text
+            let len = (tv.string as NSString).length
+            tv.selectedRanges = sel.map { v in
+                let r = v.rangeValue
+                let loc = min(r.location, len)
+                let length = min(r.length, max(0, len - loc))
+                return NSValue(range: NSRange(location: loc, length: length))
+            }
+        }
+
+        if tv.font != font       { tv.font = font }
+        if tv.textColor != textColor { tv.textColor = textColor }
+
+        // Keep coordinator callbacks current with each SwiftUI render
+        coord.textBinding  = $text
+        coord.onReturn     = onReturn
+        coord.onEscape     = onEscape
+        coord.onUpArrow    = onUpArrow
+        coord.onDownArrow  = onDownArrow
+        coord.onFocusChange = onFocusChange
+
+        if isFocused {
+            DispatchQueue.main.async {
+                guard let window = tv.window, window.firstResponder !== tv else { return }
+                window.makeFirstResponder(tv)
+            }
+        }
+    }
+
+    func makeCoordinator() -> Coordinator { Coordinator() }
+
+    // MARK: - Coordinator
+
+    final class Coordinator: NSObject, NSTextViewDelegate {
+        let textView = KeyableNSTextView()
+
+        // Updated on every SwiftUI render via updateNSView
+        var textBinding:   Binding<String>?
+        var onReturn:      () -> Bool = { false }
+        var onEscape:      () -> Bool = { false }
+        var onUpArrow:     () -> Bool = { false }
+        var onDownArrow:   () -> Bool = { false }
+        var onFocusChange: (Bool) -> Void = { _ in }
+
+        override init() {
+            super.init()
+            textView.coordinator = self
+        }
+
+        func textDidChange(_ notification: Notification) {
+            guard let tv = notification.object as? NSTextView else { return }
+            textBinding?.wrappedValue = tv.string
+        }
+    }
+}
+
+// MARK: - KeyableNSTextView
+
+/// NSTextView that routes Return / Escape / arrow keys to the SwiftUI
+/// coordinator before the AppKit default handling runs.
+final class KeyableNSTextView: NSTextView {
+    weak var coordinator: NativeTextEditor.Coordinator?
+
+    override func keyDown(with event: NSEvent) {
+        guard let coord = coordinator else { super.keyDown(with: event); return }
+
+        let flags = event.modifierFlags.intersection(.deviceIndependentFlagsMask)
+        let shift = flags.contains(.shift)
+        let cmd   = flags.contains(.command)
+
+        switch event.keyCode {
+        case 36: // Return
+            if shift || cmd {
+                // Shift+Enter or Cmd+Enter → literal newline
+                insertNewlineIgnoringFieldEditor(nil)
+            } else {
+                // Plain Enter → let SwiftUI decide (send or select dropdown item)
+                if !coord.onReturn() {
+                    insertNewlineIgnoringFieldEditor(nil)
+                }
+            }
+        case 53: // Escape
+            if !coord.onEscape() { super.keyDown(with: event) }
+        case 126: // Up arrow
+            if !coord.onUpArrow() { super.keyDown(with: event) }
+        case 125: // Down arrow
+            if !coord.onDownArrow() { super.keyDown(with: event) }
+        default:
+            super.keyDown(with: event)
+        }
+    }
+
+    override func becomeFirstResponder() -> Bool {
+        let ok = super.becomeFirstResponder()
+        if ok { coordinator?.onFocusChange(true) }
+        return ok
+    }
+
+    override func resignFirstResponder() -> Bool {
+        let ok = super.resignFirstResponder()
+        if ok { coordinator?.onFocusChange(false) }
+        return ok
+    }
+}

oAI/Views/Main/SidebarView.swift

@@ -0,0 +1,216 @@
+//
+//  SidebarView.swift
+//  oAI
+//
+//  Collapsible sidebar: new chat, conversation list, status pills
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// Copyright (C) 2026 Rune Olsen
+//
+// This file is part of oAI.
+//
+// oAI is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// oAI is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
+// Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public
+// License along with oAI. If not, see <https://www.gnu.org/licenses/>.
+
+
+import SwiftUI
+#if os(macOS)
+import AppKit
+#endif
+
+struct SidebarView: View {
+    @Environment(ChatViewModel.self) private var chatViewModel
+    @State private var conversations: [Conversation] = []
+    @State private var searchText = ""
+
+    private var filteredConversations: [Conversation] {
+        guard !searchText.isEmpty else { return conversations }
+        return conversations.filter { $0.name.lowercased().contains(searchText.lowercased()) }
+    }
+
+    var body: some View {
+        VStack(spacing: 0) {
+            // New Chat button
+            Button(action: { chatViewModel.newConversation() }) {
+                HStack(spacing: 8) {
+                    Image(systemName: "square.and.pencil")
+                        .font(.system(size: 14))
+                    Text("New Chat")
+                        .font(.system(size: 14, weight: .medium))
+                    Spacer()
+                }
+                .foregroundColor(.oaiPrimary)
+                .padding(.horizontal, 12)
+                .padding(.vertical, 10)
+                .contentShape(Rectangle())
+            }
+            .buttonStyle(.plain)
+
+            // Search field
+            HStack(spacing: 6) {
+                Image(systemName: "magnifyingglass")
+                    .font(.system(size: 12))
+                    .foregroundStyle(.secondary)
+                TextField("Search conversations…", text: $searchText)
+                    .textFieldStyle(.plain)
+                    .font(.system(size: 13))
+                if !searchText.isEmpty {
+                    Button {
+                        searchText = ""
+                    } label: {
+                        Image(systemName: "xmark.circle.fill")
+                            .foregroundStyle(.tertiary)
+                    }
+                    .buttonStyle(.plain)
+                }
+                Divider().frame(height: 12)
+                Button {
+                    chatViewModel.showConversations = true
+                } label: {
+                    Image(systemName: "slider.horizontal.3")
+                        .font(.system(size: 11))
+                        .foregroundStyle(.secondary)
+                }
+                .buttonStyle(.plain)
+                .help("Advanced search — semantic search, bulk delete, export")
+            }
+            .padding(7)
+            .background(.quaternary.opacity(0.5), in: RoundedRectangle(cornerRadius: 6))
+            .padding(.horizontal, 8)
+            .padding(.bottom, 6)
+
+            Divider()
+
+            // Conversation list
+            if filteredConversations.isEmpty {
+                Spacer()
+                VStack(spacing: 8) {
+                    Image(systemName: searchText.isEmpty ? "tray" : "magnifyingglass")
+                        .font(.title2)
+                        .foregroundStyle(.tertiary)
+                    Text(searchText.isEmpty ? "No Saved Conversations" : "No Matches")
+                        .font(.callout)
+                        .foregroundStyle(.secondary)
+                }
+                Spacer()
+            } else {
+                List {
+                    ForEach(filteredConversations) { conversation in
+                        SidebarConversationRow(conversation: conversation)
+                            .contentShape(Rectangle())
+                            .onTapGesture {
+                                chatViewModel.loadConversation(conversation)
+                            }
+                            .listRowBackground(
+                                chatViewModel.currentConversationName == conversation.name
+                                    ? Color.oaiAccent.opacity(0.15)
+                                    : Color.clear
+                            )
+                            .swipeActions(edge: .trailing, allowsFullSwipe: false) {
+                                Button(role: .destructive) {
+                                    deleteConversation(conversation)
+                                } label: {
+                                    Label("Delete", systemImage: "trash")
+                                }
+                                Button {
+                                    renameConversation(conversation)
+                                } label: {
+                                    Label("Rename", systemImage: "pencil")
+                                }
+                                .tint(.orange)
+                            }
+                    }
+                }
+                .listStyle(.sidebar)
+            }
+
+        }
+        .onAppear { loadConversations() }
+        .onChange(of: chatViewModel.currentConversationName) { loadConversations() }
+        .onChange(of: chatViewModel.messages.count) { loadConversations() }
+    }
+
+    private func loadConversations() {
+        conversations = (try? DatabaseService.shared.listConversations()) ?? []
+    }
+
+    private func deleteConversation(_ conversation: Conversation) {
+        _ = try? DatabaseService.shared.deleteConversation(id: conversation.id)
+        withAnimation {
+            conversations.removeAll { $0.id == conversation.id }
+        }
+    }
+
+    private func renameConversation(_ conversation: Conversation) {
+        #if os(macOS)
+        let alert = NSAlert()
+        alert.messageText = "Rename Conversation"
+        alert.addButton(withTitle: "Rename")
+        alert.addButton(withTitle: "Cancel")
+        let input = NSTextField(frame: NSRect(x: 0, y: 0, width: 260, height: 24))
+        input.stringValue = conversation.name
+        input.selectText(nil)
+        alert.accessoryView = input
+        alert.window.initialFirstResponder = input
+        guard alert.runModal() == .alertFirstButtonReturn else { return }
+        let newName = input.stringValue.trimmingCharacters(in: .whitespaces)
+        guard !newName.isEmpty, newName != conversation.name else { return }
+        do {
+            _ = try DatabaseService.shared.updateConversation(id: conversation.id, name: newName, messages: nil)
+            if let i = conversations.firstIndex(where: { $0.id == conversation.id }) {
+                conversations[i].name = newName
+                conversations[i].updatedAt = Date()
+            }
+            chatViewModel.didRenameConversation(id: conversation.id, newName: newName)
+        } catch {
+            Log.db.error("Failed to rename conversation: \(error.localizedDescription)")
+        }
+        #endif
+    }
+}
+
+// MARK: - Sidebar conversation row
+
+struct SidebarConversationRow: View {
+    let conversation: Conversation
+
+    private var formattedDate: String {
+        let formatter = DateFormatter()
+        formatter.dateFormat = "dd.MM.yyyy"
+        return formatter.string(from: conversation.updatedAt)
+    }
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 2) {
+            Text(conversation.name)
+                .font(.system(size: 13, weight: .medium))
+                .lineLimit(1)
+            HStack(spacing: 4) {
+                Text("^[\(conversation.messageCount) message](inflect: true)")
+                    .font(.system(size: 11))
+                Text("·")
+                    .font(.system(size: 11))
+                Text(formattedDate)
+                    .font(.system(size: 11))
+            }
+            .foregroundStyle(.secondary)
+        }
+        .padding(.vertical, 2)
+    }
+}
+
+#Preview {
+    SidebarView()
+        .environment(ChatViewModel())
+        .frame(width: 240, height: 600)
+}

oAI/Views/Screens/CombineConversationsSheet.swift

@@ -0,0 +1,192 @@
+//
+//  CombineConversationsSheet.swift
+//  oAI
+//
+//  Combine 2+ saved conversations into one, optionally using AI to merge content
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// Copyright (C) 2026 Rune Olsen
+//
+// This file is part of oAI.
+//
+// oAI is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// oAI is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
+// Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public
+// License along with oAI. If not, see <https://www.gnu.org/licenses/>.
+
+
+import SwiftUI
+
+struct CombineConversationsSheet: View {
+    @Environment(\.dismiss) var dismiss
+
+    let conversations: [Conversation]
+    var onCompleted: (Conversation) -> Void
+
+    @State private var name: String
+    @State private var mode: CombineMode = .simple
+    @State private var deleteOriginals = false
+    @State private var isProcessing = false
+    @State private var errorMessage: String?
+
+    private let settings = SettingsService.shared
+
+    init(conversations: [Conversation], onCompleted: @escaping (Conversation) -> Void) {
+        self.conversations = conversations
+        self.onCompleted = onCompleted
+        let joined = conversations.map(\.name).joined(separator: " + ")
+        _name = State(initialValue: String(joined.prefix(80)))
+    }
+
+    private var defaultModelLabel: String? {
+        guard let model = settings.defaultModel, !model.isEmpty else { return nil }
+        return "\(settings.defaultProvider.displayName) / \(model)"
+    }
+
+    private var isValid: Bool {
+        !name.trimmingCharacters(in: .whitespaces).isEmpty
+            && conversations.count >= 2
+            && (mode == .simple || defaultModelLabel != nil)
+    }
+
+    var body: some View {
+        VStack(spacing: 0) {
+            HStack {
+                Text("Combine Conversations")
+                    .font(.system(size: 18, weight: .bold))
+                Spacer()
+                Button { dismiss() } label: {
+                    Image(systemName: "xmark.circle.fill")
+                        .font(.title2).foregroundStyle(.secondary)
+                }
+                .buttonStyle(.plain)
+                .keyboardShortcut(.escape, modifiers: [])
+                .disabled(isProcessing)
+            }
+            .padding(.horizontal, 24).padding(.top, 20).padding(.bottom, 16)
+
+            Divider()
+
+            ScrollView {
+                VStack(alignment: .leading, spacing: 16) {
+                    VStack(alignment: .leading, spacing: 6) {
+                        Text("Combining \(conversations.count) conversations").font(.system(size: 13, weight: .semibold))
+                        VStack(alignment: .leading, spacing: 4) {
+                            ForEach(conversations) { conversation in
+                                Label("\(conversation.name) (\(conversation.messageCount) messages)", systemImage: "bubble.left.and.bubble.right")
+                                    .font(.system(size: 12))
+                                    .foregroundStyle(.secondary)
+                            }
+                        }
+                    }
+
+                    VStack(alignment: .leading, spacing: 6) {
+                        Text("New conversation name").font(.system(size: 13, weight: .semibold))
+                        TextField("Name", text: $name)
+                            .textFieldStyle(.roundedBorder)
+                            .disabled(isProcessing)
+                    }
+
+                    VStack(alignment: .leading, spacing: 8) {
+                        Text("Merge method").font(.system(size: 13, weight: .semibold))
+                        Picker("", selection: $mode) {
+                            Text("Simple Merge").tag(CombineMode.simple)
+                            Text("AI-Assisted Merge").tag(CombineMode.ai)
+                        }
+                        .pickerStyle(.segmented)
+                        .labelsHidden()
+                        .disabled(isProcessing)
+
+                        if mode == .simple {
+                            Text("Messages from all selected conversations are combined in chronological order.")
+                                .font(.caption).foregroundStyle(.secondary)
+                        } else {
+                            Text("A model reads all the source messages and rewrites them into one coherent, de-duplicated conversation.")
+                                .font(.caption).foregroundStyle(.secondary)
+                            if let label = defaultModelLabel {
+                                Label("Uses your default model: \(label)", systemImage: "cpu")
+                                    .font(.caption).foregroundStyle(.secondary)
+                            } else {
+                                Label("No default model configured — set one in Settings → General.", systemImage: "exclamationmark.triangle.fill")
+                                    .font(.caption).foregroundStyle(.orange)
+                            }
+                        }
+                    }
+
+                    Toggle("Delete original conversations after combining", isOn: $deleteOriginals)
+                        .toggleStyle(.checkbox)
+                        .disabled(isProcessing)
+
+                    if let errorMessage {
+                        HStack(alignment: .top, spacing: 8) {
+                            Image(systemName: "xmark.octagon.fill").foregroundStyle(.red)
+                            Text(errorMessage).font(.caption)
+                        }
+                        .padding(10)
+                        .background(.red.opacity(0.08), in: RoundedRectangle(cornerRadius: 8))
+                    }
+                }
+                .padding(.horizontal, 24).padding(.vertical, 16)
+            }
+
+            Divider()
+
+            HStack {
+                Button("Cancel") { dismiss() }
+                    .buttonStyle(.bordered)
+                    .disabled(isProcessing)
+                Spacer()
+                if isProcessing {
+                    ProgressView().controlSize(.small)
+                    Text("Combining…").font(.caption).foregroundStyle(.secondary)
+                }
+                Button("Combine") {
+                    combine()
+                }
+                .buttonStyle(.borderedProminent)
+                .disabled(!isValid || isProcessing)
+                .keyboardShortcut(.return, modifiers: [.command])
+            }
+            .padding(.horizontal, 24).padding(.vertical, 12)
+        }
+        .frame(minWidth: 520, idealWidth: 560, minHeight: 460, idealHeight: 520)
+    }
+
+    private func combine() {
+        isProcessing = true
+        errorMessage = nil
+        let ids = conversations.map(\.id)
+        let trimmedName = name.trimmingCharacters(in: .whitespaces)
+        let selectedMode = mode
+        let shouldDeleteOriginals = deleteOriginals
+
+        Task {
+            do {
+                let newConversation = try await ConversationMergeService.merge(
+                    conversationIds: ids,
+                    name: trimmedName,
+                    mode: selectedMode,
+                    deleteOriginals: shouldDeleteOriginals
+                )
+                await MainActor.run {
+                    isProcessing = false
+                    onCompleted(newConversation)
+                    dismiss()
+                }
+            } catch {
+                await MainActor.run {
+                    isProcessing = false
+                    errorMessage = error.localizedDescription
+                }
+            }
+        }
+    }
+}

oAI/Views/Screens/ConversationListView.swift

@@ -36,6 +36,7 @@ struct ConversationListView: View {
     @State private var semanticResults: [Conversation] = []
     @State private var isSearching = false
     @State private var selectedIndex: Int = 0
+    @State private var showCombineSheet = false
     @FocusState private var searchFocused: Bool
     private let settings = SettingsService.shared
     var onLoad: ((Conversation) -> Void)?
@@ -70,6 +71,18 @@ struct ConversationListView: View {
                     }
                     .buttonStyle(.plain)
 
+                    if selectedConversations.count >= 2 {
+                        Button {
+                            showCombineSheet = true
+                        } label: {
+                            HStack(spacing: 4) {
+                                Image(systemName: "arrow.triangle.merge")
+                                Text("Combine (\(selectedConversations.count))")
+                            }
+                        }
+                        .buttonStyle(.plain)
+                    }
+
                     if !selectedConversations.isEmpty {
                         Button(role: .destructive) {
                             deleteSelected()
@@ -298,6 +311,16 @@ struct ConversationListView: View {
             searchFocused = true
         }
         .frame(minWidth: 700, idealWidth: 800, minHeight: 500, idealHeight: 600)
+        .sheet(isPresented: $showCombineSheet) {
+            CombineConversationsSheet(
+                conversations: conversations.filter { selectedConversations.contains($0.id) },
+                onCompleted: { _ in
+                    loadConversations()
+                    selectedConversations.removeAll()
+                    isSelecting = false
+                }
+            )
+        }
     }
 
     private func loadConversations() {

oAI/Views/Screens/ModelInfoView.swift

@@ -30,6 +30,7 @@ struct ModelInfoView: View {
 
     @Environment(\.dismiss) var dismiss
     @Bindable private var settings = SettingsService.shared
+    @State private var isDescriptionExpanded = false
 
     var body: some View {
         VStack(spacing: 0) {
@@ -78,8 +79,18 @@ struct ModelInfoView: View {
                             Text(desc)
                                 .font(.body)
                                 .foregroundColor(.primary)
-                                .fixedSize(horizontal: false, vertical: true)
+                                .lineLimit(isDescriptionExpanded ? nil : 4)
                                 .textSelection(.enabled)
+                            if desc.count > 250 {
+                                Button(isDescriptionExpanded ? "Less" : "More…") {
+                                    withAnimation(.easeInOut(duration: 0.2)) {
+                                        isDescriptionExpanded.toggle()
+                                    }
+                                }
+                                .font(.callout)
+                                .foregroundStyle(.blue)
+                                .buttonStyle(.plain)
+                            }
                         }
                         .padding(.leading, 4)
                     }

oAI/oAIApp.swift

@@ -92,6 +92,8 @@ struct oAIApp: App {
             CommandGroup(after: .newItem) {
                 Button("Open Chat…") { chatViewModel.showConversations = true }
                     .keyboardShortcut("o", modifiers: .command)
+                Button("Search Conversations") { chatViewModel.showConversations = true }
+                    .keyboardShortcut("l", modifiers: .command)
             }
 
             CommandGroup(replacing: .saveItem) {
@@ -113,10 +115,44 @@ struct oAIApp: App {
                 .disabled(chatViewModel.messages.filter { $0.role != .system }.isEmpty)
             }
 
+            // ── View menu ─────────────────────────────────────────────────
+            CommandMenu("View") {
+                Button("Select Model") { chatViewModel.showModelSelector = true }
+                    .keyboardShortcut("m", modifiers: .command)
+
+                Button("Model Info") {
+                    chatViewModel.modelInfoTarget = chatViewModel.selectedModel
+                }
+                .keyboardShortcut("i", modifiers: .command)
+                .disabled(chatViewModel.selectedModel == nil)
+
+                Divider()
+
+                Button("Command History") { chatViewModel.showHistory = true }
+                    .keyboardShortcut("h", modifiers: .command)
+
+                Button("In-App Help") { chatViewModel.showHelp = true }
+                    .keyboardShortcut("/", modifiers: .command)
+
+                Button("Credits") { chatViewModel.showCredits = true }
+
+                Divider()
+
+                Button(chatViewModel.onlineMode ? "Online Mode: On" : "Online Mode: Off") {
+                    chatViewModel.onlineMode.toggle()
+                }
+                .keyboardShortcut("o", modifiers: [.command, .shift])
+            }
+
             // ── Help menu ─────────────────────────────────────────────────
             CommandGroup(replacing: .help) {
                 Button("oAI Help") { openHelp() }
                     .keyboardShortcut("?", modifiers: .command)
+                Divider()
+                Button(UpdateCheckService.shared.isCheckingManually ? "Checking…" : "Check for Updates…") {
+                    UpdateCheckService.shared.checkForUpdatesManually()
+                }
+                .disabled(UpdateCheckService.shared.isCheckingManually)
             }
         }
         #endif