Merge pull request 'Features/ai commits' (#9) from features/ai_commits into master

Reviewed-on: #9

.claude/settings.local.json

@@ -28,7 +28,52 @@
       "Bash(xxd)",
       "Bash(python3 -)",
       "Bash(echo \"exit: $?\")",
-      "Bash(grep -n \"input,\\\\|select,\\\\|input {\\\\|select {\\\\|.repo-form input\\\\|input:focus\\\\|::placeholder\" src/app.css)"
+      "Bash(grep -n \"input,\\\\|select,\\\\|input {\\\\|select {\\\\|.repo-form input\\\\|input:focus\\\\|::placeholder\" src/app.css)",
+      "Bash(sudo -n true)",
+      "Bash(rustc --version)",
+      "Read(//mnt/c/Users/cbr/Desktop/src-tauri/src/**)",
+      "Bash(sudo apt install -y libdbus-1-dev pkg-config)",
+      "Bash(dpkg -l)",
+      "Bash(apt list *)",
+      "Bash(cargo search *)",
+      "Bash(curl -s \"https://crates.io/api/v1/crates/mistralrs\")",
+      "Bash(cargo info *)",
+      "WebFetch(domain:raw.githubusercontent.com)",
+      "Bash(gh api *)",
+      "WebFetch(domain:github.com)",
+      "WebFetch(domain:ericlbuehler.github.io)",
+      "WebFetch(domain:docs.rs)",
+      "Bash(curl -s \"https://huggingface.co/api/models/Qwen/Qwen2.5-1.5B-Instruct-GGUF\")",
+      "Bash(python3 -c ' *)",
+      "Bash(curl -sI \"https://huggingface.co/Qwen/Qwen2.5-1.5B-Instruct-GGUF/resolve/main/qwen2.5-1.5b-instruct-q4_k_m.gguf\")",
+      "Bash(curl -s \"https://huggingface.co/api/models/Qwen/Qwen2.5-1.5B-Instruct-GGUF?blobs=true\")",
+      "Bash(grep -n 'from \"\\\\./lib/git\"\\\\|from \"\\\\./lib/types\"\\\\|^    commit,$' src/App.svelte)",
+      "Bash(kill 24343 24363 24375 24376)",
+      "Bash(curl -s \"https://huggingface.co/api/models/Qwen/Qwen2.5-0.5B-Instruct-GGUF?blobs=true\")",
+      "Bash(curl -s \"https://huggingface.co/api/models/bartowski/Llama-3.2-3B-Instruct-GGUF?blobs=true\")",
+      "Bash(curl -s \"https://huggingface.co/api/models/bartowski/Llama-3.2-3B-Instruct-GGUF\")",
+      "Bash(curl -s \"https://huggingface.co/api/models/Qwen/Qwen2.5-3B-Instruct-GGUF\")",
+      "Bash(curl -s \"https://huggingface.co/api/models/Qwen/Qwen2.5-3B-Instruct-GGUF?blobs=true\")",
+      "Bash(curl -s \"https://huggingface.co/api/models/Qwen/Qwen2.5-3B-Instruct\")",
+      "Bash(: *)",
+      "Bash(exit 0 *)",
+      "Bash(rustc -O sanitize_test.rs -o sanitize_test)",
+      "Bash(./sanitize_test)",
+      "Bash(echo \"exit:$?\")",
+      "Bash(grep -rlP \"[äöüßÄÖÜ]\" src src-tauri/src src-tauri/crates --include=\"*.rs\" --include=\"*.svelte\" --include=\"*.ts\")",
+      "Bash(echo \"---exit $?---\")",
+      "Bash(apt-cache policy *)",
+      "Bash(timeout 5 curl -sI http://archive.ubuntu.com)",
+      "Bash(sudo -n apt-get install -y libdbus-1-dev pkg-config)",
+      "Bash(grep -n '\"Unerwarteter Git-Log-Eintrag: {}\",' src-tauri/src/git.rs)",
+      "Bash(grep -E \"git_lite$|tauri_git_lite$\")",
+      "Bash(rustfmt --edition 2024 --check src-tauri/src/git.rs)",
+      "Bash(echo \"EXIT:$?\")",
+      "Bash(ls target/)",
+      "Bash(rustup target *)",
+      "Bash(echo \"exit code: $?\")",
+      "Read(//home/cbr/.cargo/registry/src/**)",
+      "Bash(find / -maxdepth 6 -iname \"mistralrs-*\" -type d)"
     ]
   }
 }

.gitignore

@@ -4,4 +4,6 @@
 *.log
 .idea
 .DS_Store
-~
+~
+.codex*
+target

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "tauri-git-lite",
-  "version": "2026.7.1",
+  "version": "2026.7.7",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "tauri-git-lite",
-      "version": "2026.7.1",
+      "version": "2026.7.7",
       "dependencies": {
         "@lucide/svelte": "^1.21.0",
         "@tailwindcss/vite": "^4.3.1",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "git-lite",
-  "version": "2026.7.1",
+  "version": "2026.7.7",
   "private": true,
   "type": "module",
   "scripts": {

src-tauri/Cargo.toml

@@ -1,17 +1,24 @@
 [package]
-name = "tauri_git_lite"
+name = "git_lite"
 version = "0.1.0"
 description = "Rust backend for a lightweight Git desktop client"
-edition = "2021"
-rust-version = "1.77"
+edition = "2024"
+rust-version = "1.88"
 build = "build.rs"
 
+[workspace]
+members = [".", "crates/commit_ai"]
+
+[workspace.package]
+edition = "2024"
+
 [dependencies]
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tauri = { version = "2", features = [] }
 tauri-plugin-dialog = "=2.7.0"
 keyring = { version = "3", features = ["apple-native", "windows-native", "async-secret-service", "crypto-rust", "async-io"] }
+commit_ai = { path = "crates/commit_ai" }
 
 [build-dependencies]
 tauri-build = { version = "2", features = [] }

src-tauri/crates/commit_ai/Cargo.toml

@@ -0,0 +1,12 @@
+
+[package]
+name = "commit_ai"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+mistralrs = "0.8"
+tokio = { version = "1", features = ["sync"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }

src-tauri/crates/commit_ai/src/cloud.rs

@@ -0,0 +1,222 @@
+use std::time::Duration;
+
+use serde::{Deserialize, Serialize};
+
+use crate::{build_messages, looks_like_diff_echo, sanitize_message};
+
+// Generous sizing so a detailed body with bullet points isn't cut off.
+const DEFAULT_MAX_TOKENS: u32 = 1500;
+// Without a timeout, a hanging endpoint would permanently block the "AI" button.
+const REQUEST_TIMEOUT: Duration = Duration::from_secs(60);
+
+fn http_client() -> Result<reqwest::Client, String> {
+    reqwest::Client::builder()
+        .timeout(REQUEST_TIMEOUT)
+        .build()
+        .map_err(|err| format!("Could not create HTTP client: {err}"))
+}
+
+#[derive(Serialize)]
+struct OpenAiMessage {
+    role: &'static str,
+    content: String,
+}
+
+#[derive(Serialize)]
+struct OpenAiRequest {
+    model: String,
+    messages: Vec<OpenAiMessage>,
+    temperature: f32,
+}
+
+#[derive(Deserialize)]
+struct OpenAiResponseMessage {
+    content: Option<String>,
+}
+
+#[derive(Deserialize)]
+struct OpenAiChoice {
+    message: OpenAiResponseMessage,
+}
+
+#[derive(Deserialize)]
+struct OpenAiResponse {
+    #[serde(default)]
+    choices: Vec<OpenAiChoice>,
+}
+
+async fn openai_compatible_request(
+    url: String,
+    bearer: Option<&str>,
+    model: &str,
+    diff: &str,
+    notes: Option<&str>,
+) -> Result<String, String> {
+    let (system, user) = build_messages(diff, notes)?;
+    let body = OpenAiRequest {
+        model: model.to_string(),
+        messages: vec![
+            OpenAiMessage {
+                role: "system",
+                content: system,
+            },
+            OpenAiMessage {
+                role: "user",
+                content: user,
+            },
+        ],
+        temperature: 0.3,
+    };
+
+    let client = http_client()?;
+    let mut request = client.post(url).json(&body);
+    if let Some(key) = bearer.filter(|k| !k.trim().is_empty()) {
+        request = request.bearer_auth(key);
+    }
+
+    let response = request
+        .send()
+        .await
+        .map_err(|err| format!("Request to the AI model failed: {err}"))?;
+    let status = response.status();
+    let text = response
+        .text()
+        .await
+        .map_err(|err| format!("Could not read response: {err}"))?;
+
+    if !status.is_success() {
+        return Err(format!("API error ({status}): {text}"));
+    }
+
+    let parsed: OpenAiResponse =
+        serde_json::from_str(&text).map_err(|err| format!("Could not process response: {err}"))?;
+
+    let message = parsed
+        .choices
+        .into_iter()
+        .next()
+        .and_then(|choice| choice.message.content)
+        .map(|content| sanitize_message(&content))
+        .filter(|content| !content.is_empty())
+        .ok_or_else(|| "The model did not return a response.".to_string())?;
+
+    if looks_like_diff_echo(&message) {
+        return Err("The model returned the diff instead of a commit message.".to_string());
+    }
+    Ok(message)
+}
+
+pub async fn generate_openai(
+    api_key: &str,
+    model: &str,
+    diff: &str,
+    notes: Option<&str>,
+) -> Result<String, String> {
+    if api_key.trim().is_empty() {
+        return Err("OpenAI API key is missing.".to_string());
+    }
+    openai_compatible_request(
+        "https://api.openai.com/v1/chat/completions".to_string(),
+        Some(api_key),
+        model,
+        diff,
+        notes,
+    )
+    .await
+}
+
+pub async fn generate_custom(
+    base_url: &str,
+    api_key: Option<&str>,
+    model: &str,
+    diff: &str,
+    notes: Option<&str>,
+) -> Result<String, String> {
+    if base_url.trim().is_empty() {
+        return Err("Endpoint URL is missing.".to_string());
+    }
+    let url = format!("{}/chat/completions", base_url.trim_end_matches('/'));
+    openai_compatible_request(url, api_key, model, diff, notes).await
+}
+
+#[derive(Serialize)]
+struct AnthropicMessage {
+    role: &'static str,
+    content: String,
+}
+
+#[derive(Serialize)]
+struct AnthropicRequest {
+    model: String,
+    max_tokens: u32,
+    system: String,
+    messages: Vec<AnthropicMessage>,
+}
+
+#[derive(Deserialize)]
+struct AnthropicContentBlock {
+    #[serde(default)]
+    text: Option<String>,
+}
+
+#[derive(Deserialize)]
+struct AnthropicResponse {
+    #[serde(default)]
+    content: Vec<AnthropicContentBlock>,
+}
+
+pub async fn generate_anthropic(
+    api_key: &str,
+    model: &str,
+    diff: &str,
+    notes: Option<&str>,
+) -> Result<String, String> {
+    if api_key.trim().is_empty() {
+        return Err("Anthropic API key is missing.".to_string());
+    }
+    let (system, user) = build_messages(diff, notes)?;
+    let body = AnthropicRequest {
+        model: model.to_string(),
+        max_tokens: DEFAULT_MAX_TOKENS,
+        system,
+        messages: vec![AnthropicMessage {
+            role: "user",
+            content: user,
+        }],
+    };
+
+    let client = http_client()?;
+    let response = client
+        .post("https://api.anthropic.com/v1/messages")
+        .header("x-api-key", api_key)
+        .header("anthropic-version", "2023-06-01")
+        .json(&body)
+        .send()
+        .await
+        .map_err(|err| format!("Request to Anthropic failed: {err}"))?;
+    let status = response.status();
+    let text = response
+        .text()
+        .await
+        .map_err(|err| format!("Could not read response: {err}"))?;
+
+    if !status.is_success() {
+        return Err(format!("API error ({status}): {text}"));
+    }
+
+    let parsed: AnthropicResponse =
+        serde_json::from_str(&text).map_err(|err| format!("Could not process response: {err}"))?;
+
+    let message = parsed
+        .content
+        .into_iter()
+        .find_map(|block| block.text)
+        .map(|text| sanitize_message(&text))
+        .filter(|text| !text.is_empty())
+        .ok_or_else(|| "The model did not return a response.".to_string())?;
+
+    if looks_like_diff_echo(&message) {
+        return Err("The model returned the diff instead of a commit message.".to_string());
+    }
+    Ok(message)
+}

src-tauri/crates/commit_ai/src/lib.rs

@@ -0,0 +1,445 @@
+mod cloud;
+
+pub use cloud::{generate_anthropic, generate_custom, generate_openai};
+
+use std::{
+    collections::hash_map::DefaultHasher,
+    hash::{Hash, Hasher},
+    sync::Arc,
+};
+
+use mistralrs::{GgufModelBuilder, Model, RequestBuilder, TextMessageRole};
+use tokio::sync::RwLock;
+
+/// One selectable local (on-device) model. Larger models produce better commit messages
+/// but take longer to download (first run only, then cached) and run slower on CPU.
+#[derive(Debug, Clone, serde::Serialize)]
+pub struct LocalModelOption {
+    pub id: &'static str,
+    pub label: &'static str,
+    pub approx_size_mb: u32,
+    repo: &'static str,
+    file: &'static str,
+    tokenizer_repo: &'static str,
+}
+
+pub const DEFAULT_LOCAL_MODEL_ID: &str = "qwen2.5-0.5b";
+
+pub const LOCAL_MODELS: &[LocalModelOption] = &[
+    LocalModelOption {
+        id: "qwen2.5-0.5b",
+        label: "Qwen2.5 0.5B Instruct — fast, lower quality",
+        approx_size_mb: 490,
+        repo: "Qwen/Qwen2.5-0.5B-Instruct-GGUF",
+        file: "qwen2.5-0.5b-instruct-q4_k_m.gguf",
+        tokenizer_repo: "Qwen/Qwen2.5-0.5B-Instruct",
+    },
+    LocalModelOption {
+        id: "qwen2.5-1.5b",
+        label: "Qwen2.5 1.5B Instruct — recommended",
+        approx_size_mb: 1050,
+        repo: "Qwen/Qwen2.5-1.5B-Instruct-GGUF",
+        file: "qwen2.5-1.5b-instruct-q4_k_m.gguf",
+        tokenizer_repo: "Qwen/Qwen2.5-1.5B-Instruct",
+    },
+    LocalModelOption {
+        id: "qwen2.5-3b",
+        label: "Qwen2.5 3B Instruct — best quality, slower",
+        approx_size_mb: 2100,
+        repo: "Qwen/Qwen2.5-3B-Instruct-GGUF",
+        file: "qwen2.5-3b-instruct-q4_k_m.gguf",
+        tokenizer_repo: "Qwen/Qwen2.5-3B-Instruct",
+    },
+];
+
+fn find_local_model(model_id: &str) -> Option<&'static LocalModelOption> {
+    LOCAL_MODELS.iter().find(|option| option.id == model_id)
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, serde::Serialize, serde::Deserialize)]
+#[serde(rename_all = "lowercase")]
+pub enum LocalGenerationProfile {
+    Fast,
+    Balanced,
+    Detailed,
+}
+
+impl Default for LocalGenerationProfile {
+    fn default() -> Self {
+        Self::Fast
+    }
+}
+
+impl LocalGenerationProfile {
+    pub fn from_id(value: Option<&str>) -> Self {
+        match value
+            .unwrap_or_default()
+            .trim()
+            .to_ascii_lowercase()
+            .as_str()
+        {
+            "balanced" => Self::Balanced,
+            "detailed" => Self::Detailed,
+            _ => Self::Fast,
+        }
+    }
+
+    pub fn diff_unified_context(self) -> &'static str {
+        match self {
+            Self::Fast => "--unified=1",
+            Self::Balanced => "--unified=2",
+            Self::Detailed => "--unified=3",
+        }
+    }
+
+    fn max_diff_chars(self) -> usize {
+        match self {
+            Self::Fast => 8_000,
+            Self::Balanced => 12_000,
+            Self::Detailed => 24_000,
+        }
+    }
+
+    fn max_output_tokens(self) -> usize {
+        match self {
+            Self::Fast => 160,
+            Self::Balanced => 360,
+            Self::Detailed => 750,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize)]
+#[serde(rename_all = "lowercase")]
+pub enum CommitAiPhase {
+    /// Nothing has been requested yet.
+    Idle,
+    /// Downloading (first run only, then cached by hf-hub) and/or loading into memory.
+    Loading,
+    Ready,
+    Error,
+}
+
+#[derive(Debug, Clone, serde::Serialize)]
+pub struct CommitAiStatus {
+    pub phase: CommitAiPhase,
+    pub model_id: Option<String>,
+    pub error: Option<String>,
+}
+
+struct Inner {
+    phase: CommitAiPhase,
+    model_id: Option<String>,
+    error: Option<String>,
+    model: Option<Arc<Model>>,
+    cache: Option<GenerationCache>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+struct GenerationCacheKey {
+    model_id: String,
+    profile: LocalGenerationProfile,
+    input_hash: u64,
+}
+
+#[derive(Debug, Clone)]
+struct GenerationCache {
+    key: GenerationCacheKey,
+    message: String,
+}
+
+/// Manages the local (on-device) model only. Cloud providers are stateless HTTP calls
+/// (see [`cloud`]) and don't need this — there's nothing to download or keep loaded.
+#[derive(Clone)]
+pub struct CommitAiEngine {
+    inner: Arc<RwLock<Inner>>,
+}
+
+impl Default for CommitAiEngine {
+    fn default() -> Self {
+        Self {
+            inner: Arc::new(RwLock::new(Inner {
+                phase: CommitAiPhase::Idle,
+                model_id: None,
+                error: None,
+                model: None,
+                cache: None,
+            })),
+        }
+    }
+}
+
+impl CommitAiEngine {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub async fn status(&self) -> CommitAiStatus {
+        let guard = self.inner.read().await;
+        CommitAiStatus {
+            phase: guard.phase,
+            model_id: guard.model_id.clone(),
+            error: guard.error.clone(),
+        }
+    }
+
+    /// Downloads (first run only; hf-hub caches the files afterwards) and loads the given
+    /// local model. Safe to call repeatedly — a call for the model that's already
+    /// ready/loading is a no-op; a call for a *different* model switches to it (the
+    /// previous one is dropped once no generation is still using it).
+    pub async fn ensure_loaded(&self, model_id: &str) {
+        {
+            let guard = self.inner.read().await;
+            let same_model = guard.model_id.as_deref() == Some(model_id);
+            if same_model && matches!(guard.phase, CommitAiPhase::Ready | CommitAiPhase::Loading) {
+                return;
+            }
+        }
+
+        let Some(option) = find_local_model(model_id) else {
+            let mut guard = self.inner.write().await;
+            guard.phase = CommitAiPhase::Error;
+            guard.model_id = Some(model_id.to_string());
+            guard.error = Some(format!("Unknown local model: {model_id}"));
+            guard.cache = None;
+            return;
+        };
+
+        {
+            let mut guard = self.inner.write().await;
+            guard.phase = CommitAiPhase::Loading;
+            guard.model_id = Some(model_id.to_string());
+            guard.error = None;
+            guard.model = None;
+            guard.cache = None;
+        }
+
+        let result = GgufModelBuilder::new(option.repo, vec![option.file])
+            .with_tok_model_id(option.tokenizer_repo)
+            .with_logging()
+            .build()
+            .await;
+
+        let mut guard = self.inner.write().await;
+        // If the user switched to yet another model while this one was loading, drop this
+        // (now stale) result instead of overwriting the newer request's state.
+        if guard.model_id.as_deref() != Some(model_id) {
+            return;
+        }
+        match result {
+            Ok(model) => {
+                guard.model = Some(Arc::new(model));
+                guard.phase = CommitAiPhase::Ready;
+                guard.error = None;
+                guard.cache = None;
+            }
+            Err(err) => {
+                guard.phase = CommitAiPhase::Error;
+                guard.error = Some(err.to_string());
+                guard.cache = None;
+            }
+        }
+    }
+
+    pub async fn generate_commit_message(
+        &self,
+        diff: &str,
+        notes: Option<&str>,
+        profile: LocalGenerationProfile,
+    ) -> Result<String, String> {
+        let (model, cache_key) = {
+            let guard = self.inner.read().await;
+            match (guard.phase, &guard.model) {
+                (CommitAiPhase::Ready, Some(model)) => {
+                    let cache_key = GenerationCacheKey {
+                        model_id: guard.model_id.clone().unwrap_or_default(),
+                        profile,
+                        input_hash: generation_input_hash(diff, notes),
+                    };
+                    if let Some(cache) = &guard.cache {
+                        if cache.key == cache_key {
+                            return Ok(cache.message.clone());
+                        }
+                    }
+                    (model.clone(), cache_key)
+                }
+                _ => return Err("The local AI model is not ready yet.".to_string()),
+            }
+        };
+
+        let (system, user) = build_local_messages(diff, notes, profile)?;
+        let request = RequestBuilder::new()
+            .set_sampler_max_len(profile.max_output_tokens())
+            .add_message(TextMessageRole::System, system)
+            .add_message(TextMessageRole::User, user);
+
+        let response = model
+            .send_chat_request(request)
+            .await
+            .map_err(|err| err.to_string())?;
+
+        let content = response
+            .choices
+            .first()
+            .and_then(|choice| choice.message.content.clone())
+            .ok_or_else(|| "The model did not return a response.".to_string())?;
+
+        let message = sanitize_message(&content);
+        if message.is_empty() {
+            return Err("The model did not return a response.".to_string());
+        }
+        if looks_like_diff_echo(&message) {
+            return Err(
+                "The local model returned the diff instead of a commit message. Try a larger local model (1.5B or 3B) or a cloud provider.".to_string(),
+            );
+        }
+        {
+            let mut guard = self.inner.write().await;
+            guard.cache = Some(GenerationCache {
+                key: cache_key,
+                message: message.clone(),
+            });
+        }
+        Ok(message)
+    }
+}
+
+fn generation_input_hash(diff: &str, notes: Option<&str>) -> u64 {
+    let mut hasher = DefaultHasher::new();
+    diff.hash(&mut hasher);
+    notes.unwrap_or("").hash(&mut hasher);
+    hasher.finish()
+}
+
+/// Models occasionally ignore the "no code fences" instruction (small local models
+/// especially) — strip a wrapping ``` fence and wrapping quotes so the result can go
+/// straight into the commit-message box.
+pub(crate) fn sanitize_message(raw: &str) -> String {
+    let mut text = raw.trim().to_string();
+    if text.starts_with("```") {
+        text = match text.split_once('\n') {
+            // Drop the opening fence line (which may carry a language tag) and the closing fence.
+            Some((_fence, rest)) => rest.trim_end().trim_end_matches("```").trim().to_string(),
+            None => text.trim_matches('`').trim().to_string(),
+        };
+    }
+    let trimmed = text.trim();
+    if trimmed.len() >= 2 && trimmed.starts_with('"') && trimmed.ends_with('"') {
+        return trimmed[1..trimmed.len() - 1].trim().to_string();
+    }
+    trimmed.to_string()
+}
+
+/// Weak models (small local ones especially) sometimes just echo the prompt's diff
+/// sections back instead of writing a commit message. Catch that so the UI can show a
+/// clear error instead of dumping raw diff text into the commit-message box.
+pub(crate) fn looks_like_diff_echo(message: &str) -> bool {
+    let lower = message.to_ascii_lowercase();
+    lower.contains("diff --git")
+        || lower.contains("staged files:")
+        || lower.contains("staged changes:")
+        || lower.contains("diff stat:")
+        || lower.contains("detailed diff:")
+        || message.lines().any(|line| line.starts_with("@@ "))
+}
+
+fn truncate_at_char_boundary(input: &str, max_chars: usize) -> String {
+    if input.len() <= max_chars {
+        return input.to_string();
+    }
+
+    let mut cut = max_chars;
+    while !input.is_char_boundary(cut) {
+        cut -= 1;
+    }
+    format!("{}\n\n[... diff truncated ...]", &input[..cut])
+}
+
+pub(crate) fn build_local_messages(
+    diff: &str,
+    notes: Option<&str>,
+    profile: LocalGenerationProfile,
+) -> Result<(String, String), String> {
+    if diff.trim().is_empty() {
+        return Err("No staged changes available for a commit message.".to_string());
+    }
+
+    let diff = truncate_at_char_boundary(diff, profile.max_diff_chars());
+    // Appended to every profile below: small local models occasionally just echo the input
+    // (the "Staged files:" / "Diff stat:" / "Detailed diff:" sections built in git.rs's
+    // `staged_diff_local`) instead of writing a new commit message. Naming those exact
+    // section headers here makes the failure mode explicit enough for weak models to avoid.
+    const ANTI_ECHO: &str = " Never repeat, quote, or paraphrase the diff or its headers — \
+do not include 'diff --git', '@@', 'Staged files:', 'Diff stat:', or 'Detailed diff:' \
+anywhere in your answer.";
+    let system = match profile {
+        LocalGenerationProfile::Fast => {
+            format!(
+                "You generate Git commit messages. Respond only with one Conventional Commits subject line: <type>(<scope>): <subject>. Max 72 characters. No body, bullets, preamble, explanation, code fences, or quotes. Answer in English.{ANTI_ECHO}"
+            )
+        }
+        LocalGenerationProfile::Balanced => {
+            format!(
+                "You generate Git commit messages. Respond with a Conventional Commits subject line, then a blank line, then at most two short bullet points. Keep every line under 72 characters. No preamble, explanation, code fences, or quotes. Answer in English.{ANTI_ECHO}"
+            )
+        }
+        LocalGenerationProfile::Detailed => {
+            format!(
+                "You generate Git commit messages. Respond with a Conventional Commits subject line, then a blank line, then a concise body and up to four short bullet points grouped by affected area/file. Keep every line under 72 characters. No preamble, explanation, code fences, or quotes. Answer in English.{ANTI_ECHO}"
+            )
+        }
+    };
+
+    let mut user = String::new();
+    if let Some(n) = notes.filter(|n| !n.trim().is_empty()) {
+        user.push_str(&format!("Developer notes:\n{n}\n\n"));
+    }
+    user.push_str(&format!("Staged changes:\n{diff}"));
+    Ok((system, user))
+}
+
+pub(crate) fn build_messages(diff: &str, notes: Option<&str>) -> Result<(String, String), String> {
+    if diff.trim().is_empty() {
+        return Err("No staged changes available for a commit message.".to_string());
+    }
+
+    // Rough token estimate — small models often have an 8-32k context window.
+    const MAX_CHARS: usize = 24_000;
+    let diff = truncate_at_char_boundary(diff, MAX_CHARS);
+
+    let system = "You are a tool that writes a Git commit message describing a staged diff. \
+Output ONLY the commit message text. Never quote, restate, or paraphrase the diff itself: \
+do not include lines starting with 'diff --git', '@@', '+', '-', 'index ', 'Staged files:', \
+or 'Diff stat:' anywhere in your answer. \
+Format: a Conventional Commits header (<type>(<scope>): <subject>) in imperative mood, \
+max. 72 characters, then a blank line, then a body. \
+The body is required: a short, general paragraph (2-4 sentences) summarizing what changed \
+and why at a high level — do NOT enumerate every changed file individually. \
+You may optionally add up to 3 bullet points (- ...) afterward, but only for the most \
+significant changes overall, never one bullet or heading per file. \
+Never use bold text, backticks, or markdown headings for file names. \
+Lines in the body max. 72 characters. \
+No preamble, no explanation, no code fences, answer in English.\n\n\
+Example:\n\
+Diff:\n\
+diff --git a/src/auth.py b/src/auth.py\n\
++def hash_password(pw):\n\
++    return bcrypt.hash(pw)\n\
+diff --git a/src/routes.py b/src/routes.py\n\
+-if password == stored_password:\n\
++if bcrypt.check(password, stored_password):\n\n\
+Commit message:\n\
+feat(auth): hash and verify passwords with bcrypt\n\n\
+Passwords were previously compared as plain text. This adds a bcrypt-based\n\
+hashing helper and updates the login check to verify against the hash\n\
+instead of a direct string comparison.\n\n\
+- Hash passwords on write, verify with bcrypt on login"
+        .to_string();
+
+    let mut user = String::new();
+    if let Some(n) = notes.filter(|n| !n.trim().is_empty()) {
+        user.push_str(&format!("Developer notes:\n{n}\n\n"));
+    }
+    user.push_str(&format!("Staged diff:\n{diff}"));
+    Ok((system, user))
+}

src-tauri/src/main.rs

@@ -3,32 +3,43 @@
 mod git;
 
 use git::{
-    apply_file_patch, cancel_code_search, checkout_branch, commit, compare_commits,
-    compare_file_to_head, compare_file_to_parent, create_branch, cred_delete, cred_load, cred_save,
+    SearchCancellationState, apply_file_patch, cancel_code_search, cancel_file_history,
+    checkout_branch, commit, commit_ai_generate, commit_ai_load, commit_ai_local_models,
+    commit_ai_status, compare_commits, compare_file_to_head, compare_file_to_parent,
+    create_branch, cred_delete, cred_load, cred_save, delete_branch,
     diff_file_against_working_tree, get_file_patch, get_remote_url, get_status, list_branches,
-    list_commits, list_file_history, list_repository_files, merge_branch, open_repository,
-    open_repository_bundle, pull, push, read_conflict, resolve_conflict, resolve_conflict_side,
-    restore_file_from_commit, restore_files, restore_to_commit, search_code_introductions,
-    stage_files, unstage_files, SearchCancellationState,
+    list_commits, list_file_history, list_repository_files, merge_branch, open_repo_in_explorer,
+    open_repository, open_repository_bundle, open_repository_file, pull, push, read_conflict,
+    rename_branch, resolve_conflict, resolve_conflict_side, restore_file_from_commit,
+    restore_files, restore_to_commit, search_code_introductions, stage_files, unstage_files,
 };
 
 fn main() {
     tauri::Builder::default()
         .plugin(tauri_plugin_updater::Builder::new().build())
         .manage(SearchCancellationState::default())
+        .manage(commit_ai::CommitAiEngine::new())
         .plugin(tauri_plugin_dialog::init())
         .invoke_handler(tauri::generate_handler![
             open_repository,
+            open_repo_in_explorer,
+            open_repository_file,
             get_status,
             list_branches,
             checkout_branch,
             create_branch,
+            rename_branch,
+            delete_branch,
             stage_files,
             unstage_files,
             restore_files,
             get_file_patch,
             apply_file_patch,
             commit,
+            commit_ai_status,
+            commit_ai_load,
+            commit_ai_local_models,
+            commit_ai_generate,
             pull,
             push,
             list_commits,
@@ -38,6 +49,7 @@ fn main() {
             list_repository_files,
             open_repository_bundle,
             list_file_history,
+            cancel_file_history,
             compare_commits,
             compare_file_to_head,
             compare_file_to_parent,

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "GitLite",
-  "version": "2026.7.1",
+  "version": "2026.7.7",
   "identifier": "com.git-lite",
   "build": {
     "beforeDevCommand": "npm run dev",

src/app.css

@@ -12,6 +12,7 @@
   --color-surface-dim: rgba(18, 18, 30, 0.9);
   --color-surface-hover: rgba(47, 48, 78, 0.76);
   --color-surface-raised: rgba(28, 29, 48, 0.88);
+  --color-surface-solid: #1c1d30;
 
   --color-border: rgba(100, 108, 255, 0.28);
   --color-border-subtle: rgba(255, 255, 255, 0.08);
@@ -149,6 +150,19 @@
     background: linear-gradient(180deg, rgba(65, 209, 255, 0.18), rgba(100, 108, 255, 0.16));
   }
 
+  .btn-danger {
+    border-color: rgba(255, 90, 103, 0.72);
+    color: #ffffff;
+    background: linear-gradient(135deg, rgba(255, 90, 103, 0.92), rgba(195, 44, 64, 0.9));
+    box-shadow: 0 0 22px rgba(255, 90, 103, 0.16);
+    font-weight: 700;
+  }
+  .btn-danger:hover:not(:disabled) {
+    border-color: rgba(255, 161, 169, 0.86);
+    color: #ffffff;
+    background: linear-gradient(135deg, rgba(255, 111, 124, 0.96), rgba(214, 55, 77, 0.95));
+  }
+
   .panel {
     min-width: 0;
     min-height: 0;
@@ -274,6 +288,15 @@
   }
   .titlebar-brand svg { color: #ffd343; filter: drop-shadow(0 0 10px rgba(255,211,67,0.3)); flex-shrink: 0; }
 
+  .tb-version {
+    margin-left: 1px;
+    color: rgba(255,255,255,0.32);
+    font-size: 10px;
+    font-weight: 600;
+    font-family: var(--font-mono);
+    letter-spacing: 0.01em;
+  }
+
   .titlebar-info {
     display: flex;
     align-items: center;
@@ -365,6 +388,271 @@
   .repo-form label { color: var(--color-ink-faint); font-size: 11.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap; }
   .repo-browse { min-width: 104px; }
 
+  /* --- Repository tabs + management --- */
+
+  .repo-tabbar {
+    display: grid;
+    grid-template-columns: auto minmax(0, 1fr) auto;
+    align-items: stretch;
+    min-height: 40px;
+    border: 1px solid var(--color-border-subtle);
+    border-radius: 10px;
+    background: rgba(16, 17, 29, 0.9);
+    overflow: hidden;
+  }
+
+  .repo-tabs-scroll {
+    display: flex;
+    align-items: stretch;
+    min-width: 0;
+    overflow-x: auto;
+    overflow-y: hidden;
+  }
+
+  .repo-tab-wrap {
+    display: flex;
+    align-items: stretch;
+    min-width: 0;
+    border-right: 1px solid var(--color-border-subtle);
+    background: rgba(255,255,255,0.015);
+  }
+  .repo-tab-wrap.active {
+    background: rgba(90, 140, 248, 0.16);
+    box-shadow: inset 0 -2px 0 var(--color-primary);
+  }
+
+  .repo-tab {
+    min-height: 38px;
+    min-width: 0;
+    max-width: 250px;
+    padding: 0 10px;
+    border: 0;
+    border-right: 1px solid var(--color-border-subtle);
+    border-radius: 0;
+    background: transparent;
+    color: var(--color-ink-muted);
+    font-size: 12px;
+    font-weight: 700;
+  }
+  .repo-tab.management {
+    max-width: none;
+    min-width: 190px;
+  }
+  .repo-tab.active,
+  .repo-tab-wrap.active .repo-tab {
+    color: var(--color-ink);
+  }
+  .repo-tab span {
+    min-width: 0;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .repo-tab strong {
+    flex: 0 0 auto;
+    max-width: 90px;
+    overflow: hidden;
+    padding: 2px 6px;
+    border-radius: 4px;
+    background: rgba(94, 110, 156, 0.18);
+    color: var(--color-ink-dim);
+    font-size: 10.5px;
+    font-family: var(--font-mono);
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .repo-tab-close,
+  .repo-tab-add {
+    min-height: 38px;
+    min-width: 38px;
+    padding: 0;
+    border: 0;
+    border-radius: 0;
+    background: transparent;
+    color: var(--color-ink-faint);
+  }
+  .repo-tab-add {
+    border-left: 1px solid var(--color-border-subtle);
+  }
+
+  .repo-management {
+    display: grid;
+    grid-template-rows: auto auto minmax(0, 1fr);
+    flex: 1 1 0;
+    min-height: 0;
+    border: 1px solid var(--color-border);
+    border-radius: 12px;
+    background: rgba(20, 21, 34, 0.82);
+    overflow: hidden;
+  }
+
+  .repo-management-head,
+  .repo-management-tools {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 12px;
+    padding: 12px 16px;
+    border-bottom: 1px solid var(--color-border-subtle);
+    background: var(--color-surface-dim);
+  }
+  .repo-management-head h1 {
+    margin: 2px 0 0;
+    color: var(--color-ink);
+    font-size: 18px;
+    line-height: 1.2;
+  }
+  .repo-management-actions {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+  }
+
+  .repo-management-tools {
+    padding: 9px 16px;
+    background: rgba(12, 13, 24, 0.72);
+  }
+  .repo-search {
+    position: relative;
+    width: min(620px, 100%);
+  }
+  .repo-search svg {
+    position: absolute;
+    left: 10px;
+    top: 50%;
+    color: var(--color-ink-faint);
+    transform: translateY(-50%);
+    pointer-events: none;
+  }
+  .repo-search input {
+    padding-left: 34px;
+  }
+
+  .repo-sections {
+    min-height: 0;
+    overflow: auto;
+    padding: 14px 16px 18px;
+  }
+
+  .repo-section {
+    border: 1px solid var(--color-border-subtle);
+    border-radius: 8px;
+    background: rgba(255,255,255,0.018);
+    overflow: hidden;
+  }
+  .repo-section + .repo-section { margin-top: 12px; }
+  .repo-section > header {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    min-height: 38px;
+    padding: 0 12px;
+    border-bottom: 1px solid var(--color-border-subtle);
+    background: rgba(255,255,255,0.045);
+  }
+  .repo-section h2 {
+    margin: 0;
+    color: var(--color-ink);
+    font-size: 13px;
+    font-weight: 800;
+  }
+  .repo-section > header span {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    min-width: 20px;
+    min-height: 20px;
+    border-radius: 999px;
+    background: rgba(94, 110, 156, 0.18);
+    color: var(--color-ink-dim);
+    font-size: 11px;
+    font-weight: 800;
+  }
+
+  .repo-empty {
+    padding: 20px 24px;
+    color: var(--color-ink-faint);
+    font-size: 13px;
+    font-style: italic;
+  }
+
+  .repo-table {
+    display: grid;
+  }
+  .repo-row {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) auto;
+    align-items: stretch;
+    min-height: 36px;
+    border-bottom: 1px solid rgba(255,255,255,0.035);
+  }
+  .repo-row:last-child { border-bottom: 0; }
+  .repo-row-main {
+    display: grid;
+    grid-template-columns: minmax(160px, 220px) minmax(220px, 1fr) minmax(160px, 360px);
+    justify-content: stretch;
+    min-height: 36px;
+    padding: 0 10px 0 28px;
+    border: 0;
+    border-radius: 0;
+    background: transparent;
+    text-align: left;
+  }
+  .repo-row-main:hover:not(:disabled) {
+    background: rgba(90, 140, 248, 0.08);
+  }
+  .repo-row-name,
+  .repo-row-path,
+  .repo-row-meta {
+    display: inline-flex;
+    align-items: center;
+    min-width: 0;
+    overflow: hidden;
+    color: var(--color-ink-muted);
+    font-size: 12px;
+    font-weight: 700;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .repo-row-path {
+    color: var(--color-ink-faint);
+    font-family: var(--font-mono);
+    font-size: 11.5px;
+    font-weight: 500;
+  }
+  .repo-row-meta {
+    gap: 5px;
+    justify-content: flex-start;
+    color: var(--color-ink-dim);
+  }
+  .repo-row-meta strong,
+  .repo-row-meta em {
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
+    min-height: 20px;
+    padding: 0 6px;
+    border-radius: 4px;
+    background: rgba(94, 110, 156, 0.18);
+    color: var(--color-ink-dim);
+    font-size: 10.5px;
+    font-style: normal;
+    font-weight: 800;
+  }
+  .repo-row-meta .ahead { color: #4eca76; }
+  .repo-row-meta .behind { color: #e0a040; }
+  .repo-row-icon {
+    min-height: 36px;
+    min-width: 36px;
+    padding: 0;
+    border: 0;
+    border-left: 1px solid rgba(255,255,255,0.035);
+    border-radius: 0;
+    background: transparent;
+    color: var(--color-ink-faint);
+  }
+
   /* --- Notices --- */
 
   .notice {
@@ -665,19 +953,61 @@
   .top-section {
     display: grid;
     grid-template-columns: minmax(0, 1fr);
-    grid-template-rows: minmax(0, 1fr) minmax(210px, auto);
+    grid-template-rows: minmax(120px, 1fr) 14px var(--commit-panel-height, 220px);
     min-height: 0;
-    gap: 8px;
+    gap: 0;
     padding: 8px;
     overflow: hidden;
   }
 
+  .panel-resize-handle {
+    position: relative;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    cursor: row-resize;
+    touch-action: none;
+  }
+  .panel-resize-handle::before {
+    content: "";
+    width: 40px;
+    height: 3px;
+    border-radius: 999px;
+    background: var(--color-border);
+    transition: background-color 0.15s ease;
+  }
+  .panel-resize-handle:hover::before,
+  .panel-resize-handle.resizing::before {
+    background: var(--color-accent);
+  }
+  .panel-resize-handle:focus-visible {
+    outline: 2px solid var(--color-accent);
+    outline-offset: -2px;
+    border-radius: 4px;
+  }
+
   /* --- File list / change lanes --- */
 
   .file-list { padding: 6px; overflow: auto; }
 
   .file-row { display: grid; gap: 8px; padding: 10px; border: 1px solid var(--color-border-subtle); border-radius: 8px; background: var(--color-surface-raised); }
   .file-row + .file-row { margin-top: 6px; }
+  .file-row.selected { border-color: rgba(90,140,248,0.36); background: rgba(90,140,248,0.1); }
+
+  .file-title-button {
+    justify-content: flex-start;
+    width: 100%;
+    min-height: 24px;
+    padding: 0;
+    border: 0;
+    background: transparent;
+    color: inherit;
+    text-align: left;
+  }
+  .file-title-button:hover:not(:disabled) {
+    background: transparent;
+    color: var(--color-accent);
+  }
 
   .file-title strong {
     display: block;
@@ -721,6 +1051,8 @@
     align-items: center;
     gap: 6px;
   }
+  .branch-panel { position: relative; }
+
   .branch-create-toggle {
     width: 26px;
     min-width: 26px;
@@ -827,6 +1159,60 @@
     font-size: 12px;
   }
 
+  .branch-folder-row {
+    display: grid;
+    grid-template-columns: auto auto minmax(0, 1fr) auto;
+    align-items: center;
+    justify-content: stretch;
+    gap: 7px;
+    width: 100%;
+    min-height: 34px;
+    padding: 5px 8px;
+    padding-left: calc(8px + var(--branch-indent, 0px));
+    border: 1px solid transparent;
+    border-radius: 8px;
+    background: transparent;
+    color: var(--color-ink-dim);
+    text-align: left;
+  }
+  .branch-folder-row + .branch-folder-row,
+  .branch-folder-row + .branch-row,
+  .branch-row + .branch-folder-row {
+    margin-top: 3px;
+  }
+  .branch-folder-row:hover:not(:disabled) {
+    border-color: var(--color-border-subtle);
+    background: var(--color-surface-hover);
+    color: var(--color-ink);
+  }
+  .branch-folder-row.current {
+    border-color: rgba(78,202,118,0.2);
+    background: rgba(78,202,118,0.08);
+  }
+  .branch-folder-row svg { color: var(--color-ink-faint); }
+  .branch-folder-row.current svg { color: #4eca76; }
+  .branch-folder-name {
+    overflow: hidden;
+    color: var(--color-ink-muted);
+    font-size: 12.5px;
+    font-weight: 800;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .branch-folder-count {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    min-width: 20px;
+    min-height: 18px;
+    padding: 0 6px;
+    border-radius: 999px;
+    color: var(--color-ink-dim);
+    background: rgba(94,110,156,0.14);
+    font-size: 10px;
+    font-weight: 800;
+  }
+
   .branch-row {
     display: grid;
     grid-template-columns: minmax(0, 1fr) auto;
@@ -834,6 +1220,7 @@
     gap: 8px;
     min-height: 46px;
     padding: 7px 8px;
+    padding-left: calc(8px + var(--branch-indent, 0px));
     border: 1px solid transparent;
     border-radius: 8px;
     transition: background 120ms, border-color 120ms;
@@ -853,8 +1240,67 @@
 
   .branch-actions { display: flex; align-items: center; justify-content: flex-end; gap: 5px; }
 
+  .branch-context-menu,
+  .explorer-context-menu {
+    z-index: 120;
+    display: grid;
+    gap: 2px;
+    min-width: 184px;
+    padding: 5px;
+    border: 1px solid var(--color-border);
+    border-radius: 8px;
+    background: var(--color-surface-solid);
+    box-shadow: 0 18px 50px rgba(0,0,0,0.5);
+  }
+
+  .branch-context-menu { position: absolute; }
+  .explorer-context-menu { position: fixed; }
+
+  .branch-context-menu button,
+  .explorer-context-menu button {
+    display: flex;
+    align-items: center;
+    justify-content: flex-start;
+    gap: 8px;
+    width: 100%;
+    min-height: 30px;
+    padding: 6px 8px;
+    border-color: transparent;
+    border-radius: 6px;
+    background: transparent;
+    color: var(--color-ink-muted);
+    font-size: 12px;
+    font-weight: 700;
+    text-align: left;
+  }
+
+  .branch-context-menu button:hover:not(:disabled),
+  .explorer-context-menu button:hover:not(:disabled) {
+    border-color: var(--color-border-subtle);
+    background: rgba(255,255,255,0.06);
+    color: var(--color-ink);
+  }
+
+  .branch-context-menu button.danger {
+    color: #ff9aa8;
+  }
+
+  .branch-context-menu button.danger:hover:not(:disabled) {
+    border-color: rgba(255,92,117,0.34);
+    background: rgba(255,92,117,0.12);
+    color: #ffd0d6;
+  }
+
+  .branch-context-menu button:disabled,
+  .explorer-context-menu button:disabled {
+    cursor: not-allowed;
+    opacity: 0.48;
+  }
+
   /* --- Explorer --- */
 
+  .explorer-panel { position: relative; }
+
   .explorer-head-actions { display: flex; align-items: center; gap: 5px; flex: 0 0 auto; }
   .explorer-bulk-button {
     width: 26px;
@@ -923,8 +1369,37 @@
 
   /* --- Commit form --- */
 
-  .commit-form { display: flex; flex-direction: column; flex: 1 1 0; min-height: 0; gap: 8px; padding: 10px; }
-  .commit-form textarea { flex: 1 1 0; min-height: 80px; resize: none; }
+  .commit-panel {
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+    overflow: hidden;
+  }
+  .commit-panel .section-head { flex: 0 0 auto; }
+  .commit-form {
+    display: grid;
+    grid-template-rows: minmax(0, 1fr) auto auto;
+    flex: 1 1 0;
+    min-height: 0;
+    gap: 8px;
+    padding: 10px;
+    overflow: hidden;
+  }
+  .commit-form textarea {
+    min-height: 0;
+    height: 100%;
+    resize: none;
+    overflow: auto;
+  }
+  .commit-actions-row {
+    display: flex;
+    flex: 0 0 auto;
+    gap: 8px;
+    min-width: 0;
+  }
+  .commit-actions-row .btn-primary { min-width: 0; }
+  .commit-ai-button { flex: 0 0 auto; min-width: 64px; justify-content: center; }
+  .commit-ai-settings-button { flex: 0 0 auto; width: 38px; min-width: 38px; padding: 0; justify-content: center; }
   .commit-block-reason {
     margin: 0;
     padding: 8px 10px;
@@ -998,6 +1473,82 @@
   .file-history-actions .commit-action-buttons { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; justify-content: stretch; }
   .file-history-actions .commit-action-buttons button { min-width: 0; justify-content: center; padding-inline: 6px; }
 
+  /* --- File history loading (scoped, non-blocking) --- */
+
+  .file-history-loading {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 12px;
+    min-height: 140px;
+    padding: 20px;
+  }
+
+  .file-history-loading-graph { width: 56px; height: 56px; overflow: visible; }
+
+  .file-history-loading-graph .fhl-ring {
+    fill: none;
+    stroke: rgba(100, 108, 255, 0.22);
+    stroke-width: 3;
+    stroke-dasharray: 26 18;
+    transform-origin: 60px 60px;
+    animation: fhl-ring-spin 5s linear infinite;
+  }
+
+  .file-history-loading-graph .fhl-trunk,
+  .file-history-loading-graph .fhl-branch {
+    fill: none;
+    stroke: url(#fhl-line);
+    stroke-width: 5;
+    stroke-linecap: round;
+  }
+
+  .file-history-loading-graph .fhl-branch {
+    stroke-dasharray: 90;
+    stroke-dashoffset: 90;
+    animation: fhl-branch-draw 2.4s ease-in-out infinite;
+  }
+
+  .file-history-loading-graph .fhl-node {
+    fill: var(--color-surface-alt);
+    stroke: url(#fhl-line);
+    stroke-width: 5;
+    animation: fhl-node-pulse 2.4s ease-in-out infinite;
+  }
+  .file-history-loading-graph .fhl-n1 { animation-delay: 0s; }
+  .file-history-loading-graph .fhl-n2 { animation-delay: 0.5s; }
+  .file-history-loading-graph .fhl-n3 { animation-delay: 1s; }
+  .file-history-loading-graph .fhl-n4 { animation-delay: 1.5s; }
+
+  .file-history-loading-label {
+    color: var(--color-ink-faint);
+    font-size: 12.5px;
+    font-weight: 600;
+    letter-spacing: 0.01em;
+  }
+
+  @keyframes fhl-ring-spin { to { transform: rotate(360deg); } }
+  @keyframes fhl-branch-draw {
+    0% { stroke-dashoffset: 90; opacity: 0.35; }
+    45% { stroke-dashoffset: 0; opacity: 1; }
+    100% { stroke-dashoffset: 0; opacity: 1; }
+  }
+  @keyframes fhl-node-pulse {
+    0%, 100% { fill: var(--color-surface-alt); filter: none; }
+    50% {
+      fill: var(--color-primary);
+      filter: drop-shadow(0 0 6px rgba(100, 108, 255, 0.8));
+    }
+  }
+
+  @media (prefers-reduced-motion: reduce) {
+    .file-history-loading-graph .fhl-ring,
+    .file-history-loading-graph .fhl-branch,
+    .file-history-loading-graph .fhl-node { animation: none; }
+    .file-history-loading-graph .fhl-branch { stroke-dashoffset: 0; }
+  }
+
   /* --- Git graph --- */
 
   .graph-list { padding: 0; }
@@ -1113,12 +1664,113 @@
     max-height: calc(100vh - 32px);
     overflow: auto;
   }
+  .rename-branch-dialog {
+    display: block;
+    width: min(520px, calc(100vw - 32px));
+    height: auto;
+    max-height: calc(100vh - 32px);
+    overflow: auto;
+  }
+  .discard-confirm-dialog {
+    display: grid;
+    grid-template-rows: auto auto auto;
+    width: min(560px, calc(100vw - 32px));
+    height: auto;
+    max-height: calc(100vh - 32px);
+    overflow: auto;
+  }
+  .ai-settings-dialog {
+    display: block;
+    width: min(560px, calc(100vw - 32px));
+    height: auto;
+    max-height: calc(100vh - 32px);
+    overflow: auto;
+  }
+  .ai-settings-form {
+    display: flex;
+    flex-direction: column;
+    gap: 14px;
+    padding: 16px;
+  }
+  .ai-provider-options {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 8px;
+  }
+  .ai-provider-option {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 7px;
+    min-height: 38px;
+    padding: 0 10px;
+    border: 1px solid var(--color-border-subtle);
+    border-radius: 8px;
+    background: rgba(255,255,255,0.03);
+    color: var(--color-ink-dim);
+    font-size: 12.5px;
+    font-weight: 700;
+  }
+  .ai-provider-option:hover {
+    border-color: var(--color-border);
+    color: var(--color-ink);
+    background: var(--color-surface-hover);
+  }
+  .ai-provider-option.active {
+    border-color: rgba(100,108,255,0.5);
+    color: #f5f7ff;
+    background: linear-gradient(180deg, rgba(100,108,255,0.22), rgba(65,209,255,0.1));
+  }
+  .ai-provider-option-local {
+    flex-wrap: wrap;
+    row-gap: 2px;
+  }
+  .ai-provider-badge {
+    flex-basis: 100%;
+    text-align: center;
+    font-size: 9.5px;
+    font-weight: 700;
+    letter-spacing: 0.04em;
+    text-transform: uppercase;
+    color: var(--color-ink-faint);
+  }
+  .ai-local-profile-options {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 8px;
+  }
+  .ai-local-profile-option {
+    min-width: 0;
+    min-height: 34px;
+    padding: 0 8px;
+    border-color: var(--color-border-subtle);
+    background: rgba(255,255,255,0.03);
+    color: var(--color-ink-dim);
+    font-size: 12px;
+    font-weight: 700;
+  }
+  .ai-local-profile-option:hover:not(:disabled) {
+    border-color: var(--color-border);
+    color: var(--color-ink);
+    background: var(--color-surface-hover);
+  }
+  .ai-local-profile-option.active {
+    border-color: rgba(65,209,255,0.48);
+    color: #f5f7ff;
+    background: linear-gradient(180deg, rgba(65,209,255,0.16), rgba(100,108,255,0.12));
+  }
   .new-branch-form {
     display: flex;
     flex-direction: column;
     gap: 14px;
     padding: 16px;
   }
+  .rename-branch-form {
+    display: flex;
+    flex-direction: column;
+    gap: 14px;
+    padding: 16px;
+  }
   .new-branch-target {
     display: flex;
     align-items: center;
@@ -1316,6 +1968,59 @@
 
   .prepared-tag { display: inline-flex; align-items: center; gap: 4px; margin-right: auto; color: #4eca76; font-size: 12px; font-weight: 700; }
 
+  .discard-confirm-body {
+    display: grid;
+    grid-template-columns: auto minmax(0, 1fr);
+    gap: 14px;
+    padding: 18px 16px 16px;
+  }
+  .discard-warning-icon {
+    display: grid;
+    place-items: center;
+    width: 42px;
+    height: 42px;
+    border: 1px solid rgba(255, 90, 103, 0.32);
+    border-radius: 10px;
+    color: #ff9aa4;
+    background: rgba(255, 90, 103, 0.1);
+  }
+  .discard-confirm-copy {
+    display: grid;
+    gap: 10px;
+    min-width: 0;
+    color: var(--color-ink-muted);
+    font-size: 13px;
+    line-height: 1.45;
+  }
+  .discard-confirm-copy p { margin: 0; }
+  .discard-target {
+    display: block;
+    min-width: 0;
+    max-height: 84px;
+    overflow: auto;
+    padding: 8px 9px;
+    border: 1px solid var(--color-border-subtle);
+    border-radius: 6px;
+    color: var(--color-ink);
+    background: rgba(0, 0, 0, 0.18);
+    font-family: var(--font-mono);
+    font-size: 12px;
+    white-space: pre-wrap;
+    word-break: break-word;
+  }
+  .discard-warning-text {
+    color: #ffb8bf;
+    font-weight: 650;
+  }
+  .discard-confirm-actions {
+    display: flex;
+    justify-content: flex-end;
+    gap: 8px;
+    padding: 12px 16px 14px;
+    border-top: 1px solid var(--color-border-subtle);
+    background: var(--color-surface-dim);
+  }
+
   .line-patch-body {
     display: grid;
     grid-template-rows: minmax(0, 1fr);
@@ -2352,7 +3057,7 @@
 /* Stack CommitPanel below StatusPanel; history panels stay side by side */
 @media (max-width: 1100px) {
   .workspace    { grid-template-columns: clamp(185px, 16vw, 220px) minmax(0, 1fr) clamp(380px, 38vw, 500px); }
-  .top-section  { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) 190px; }
+  .top-section  { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) 14px var(--commit-panel-height, 190px); }
 }
 
 /* Compact: stack history panels vertically, narrow sidebars */
@@ -2378,8 +3083,14 @@
   .workspace      { grid-template-columns: 1fr; gap: 6px; }
   .history-aside  { grid-template-columns: 1fr; grid-template-rows: minmax(200px, 1fr) minmax(150px, 0.5fr); min-height: 380px; }
   .left-sidebar   { grid-template-rows: minmax(200px, 1fr) minmax(240px, 1.2fr); min-height: 440px; }
-  .top-section    { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) 190px; }
+  .top-section    { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) 14px var(--commit-panel-height, 190px); }
   .repo-form      { grid-template-columns: 1fr; }
+  .repo-tabbar    { grid-template-columns: minmax(0, 1fr) auto; }
+  .repo-tab.management { min-width: 0; }
+  .repo-tabs-scroll { grid-column: 1 / -1; order: 2; border-top: 1px solid var(--color-border-subtle); }
+  .repo-row-main  { grid-template-columns: minmax(0, 1fr); gap: 2px; align-content: center; padding-left: 12px; }
+  .repo-row       { min-height: 58px; }
+  .repo-row-icon  { min-height: 58px; }
   .repo-path      { display: none; }
   .repo-summary   { height: 40px; }
   .change-lanes   { grid-template-columns: 1fr; }

src/lib/TitleBar.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
   import { onDestroy, onMount } from "svelte";
+  import { getVersion } from "@tauri-apps/api/app";
   import { getCurrentWindow } from "@tauri-apps/api/window";
-  import { Download, GitBranch, GitCompare, LoaderCircle, Minus, RefreshCw, Search, Upload, X } from "@lucide/svelte";
+  import { Download, FolderOpen, GitBranch, GitCompare, LoaderCircle, Minus, RefreshCw, Search, Upload, X } from "@lucide/svelte";
 
   export let branch: string = "";
   export let ahead: number = 0;
@@ -17,17 +18,20 @@
   export let onRefresh: () => void = () => {};
   export let onSearch: () => void = () => {};
   export let onCompare: () => void = () => {};
+  export let onOpenInExplorer: () => void = () => {};
   export let onToggleAutoRefresh: () => void = () => {};
 
   const win = getCurrentWindow();
   let isMaximized = false;
   let unlisten: (() => void) | undefined;
+  let appVersion = "";
 
   onMount(async () => {
     isMaximized = await win.isMaximized();
     unlisten = await win.onResized(async () => {
       isMaximized = await win.isMaximized();
     });
+    appVersion = await getVersion();
   });
 
   onDestroy(() => {
@@ -57,6 +61,9 @@
       <line x1="12" y1="12" x2="12" y2="15" />
     </svg>
     <span data-tauri-drag-region>GitLite</span>
+    {#if appVersion}
+      <span class="tb-version" data-tauri-drag-region title="Version {appVersion}">v{appVersion}</span>
+    {/if}
   </div>
 
   <!-- Center: repo + branch info -->
@@ -82,6 +89,17 @@
   <!-- Right: actions + window controls -->
   <div class="titlebar-right">
     <div class="titlebar-actions" role="toolbar" aria-label="Repository actions">
+      <button
+        class="tb-action"
+        onclick={onOpenInExplorer}
+        disabled={!hasRepository || isBusy}
+        title="Open repository in Explorer"
+        aria-label="Open repository in Explorer"
+      >
+        <FolderOpen size={14} aria-hidden="true" />
+        <span class="tb-action-label">Explorer</span>
+      </button>
+
       <button
         class="tb-action"
         onclick={onSearch}

src/lib/components/AiSettingsDialog.svelte

@@ -0,0 +1,299 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { AlertCircle, Bot, Check, Cpu, Eye, EyeOff, Gauge, Globe, Key, LoaderCircle, Sparkles, X, Zap } from "@lucide/svelte";
+  import { credDelete, credLoad, credSave } from "../git";
+  import type { AiSettings, CommitAiLocalProfile, CommitAiProvider, LocalModelOption } from "../types";
+
+  interface Props {
+    settings: AiSettings;
+    localModels: LocalModelOption[];
+    onSave: (settings: AiSettings) => void;
+    onClose: () => void;
+  }
+
+  let { settings, localModels = [], onSave, onClose }: Props = $props();
+
+  type CloudProvider = Exclude<CommitAiProvider, "local">;
+
+  const CRED_KEYS: Record<CloudProvider, string> = {
+    openai: "ai:openai",
+    anthropic: "ai:anthropic",
+    custom: "ai:custom",
+  };
+
+  let provider = $state<CommitAiProvider>("local");
+  let localModelId = $state("");
+  let localProfile = $state<CommitAiLocalProfile>("fast");
+  let openaiModel = $state("");
+  let anthropicModel = $state("");
+  let customBaseUrl = $state("");
+  let customModel = $state("");
+
+  let openaiApiKey = $state("");
+  let anthropicApiKey = $state("");
+  let customApiKey = $state("");
+  let showKey = $state(false);
+  let loadingKeys = $state(true);
+  let saving = $state(false);
+  let error = $state("");
+
+  $effect(() => {
+    provider = settings.provider;
+    localModelId = settings.localModelId;
+    localProfile = settings.localProfile ?? "fast";
+    openaiModel = settings.openaiModel;
+    anthropicModel = settings.anthropicModel;
+    customBaseUrl = settings.customBaseUrl;
+    customModel = settings.customModel;
+  });
+
+  onMount(() => {
+    (async () => {
+      try {
+        const [openai, anthropic, custom] = await Promise.all([
+          credLoad(CRED_KEYS.openai),
+          credLoad(CRED_KEYS.anthropic),
+          credLoad(CRED_KEYS.custom),
+        ]);
+        openaiApiKey = openai?.password ?? "";
+        anthropicApiKey = anthropic?.password ?? "";
+        customApiKey = custom?.password ?? "";
+      } catch (err) {
+        error = err instanceof Error ? err.message : String(err);
+      } finally {
+        loadingKeys = false;
+      }
+    })();
+  });
+
+  async function persistKey(target: CloudProvider, value: string) {
+    const key = CRED_KEYS[target];
+    const trimmed = value.trim();
+    if (trimmed) {
+      await credSave(key, "api-key", trimmed, null);
+    } else {
+      await credDelete(key);
+    }
+  }
+
+  async function handleSave() {
+    saving = true;
+    error = "";
+    try {
+      await Promise.all([
+        persistKey("openai", openaiApiKey),
+        persistKey("anthropic", anthropicApiKey),
+        persistKey("custom", customApiKey),
+      ]);
+      onSave({
+        provider,
+        localModelId,
+        localProfile,
+        openaiModel: openaiModel.trim() || "gpt-4o-mini",
+        anthropicModel: anthropicModel.trim() || "claude-3-5-haiku-latest",
+        customBaseUrl: customBaseUrl.trim(),
+        customModel: customModel.trim(),
+      });
+    } catch (err) {
+      error = err instanceof Error ? err.message : String(err);
+    } finally {
+      saving = false;
+    }
+  }
+
+  function formatSize(mb: number): string {
+    return mb >= 1000 ? `${(mb / 1000).toFixed(1)} GB` : `${mb} MB`;
+  }
+
+  function recommendedModelForProfile(profile: CommitAiLocalProfile): string {
+    if (profile === "balanced") return "qwen2.5-1.5b";
+    if (profile === "detailed") return "qwen2.5-3b";
+    return "qwen2.5-0.5b";
+  }
+
+  function selectLocalProfile(profile: CommitAiLocalProfile) {
+    const previousRecommended = recommendedModelForProfile(localProfile);
+    localProfile = profile;
+    const nextRecommended = recommendedModelForProfile(profile);
+    if (!localModelId || localModelId === previousRecommended) {
+      localModelId = nextRecommended;
+    }
+  }
+
+  let selectedLocalModel = $derived(localModels.find((option) => option.id === localModelId));
+</script>
+
+<div
+  class="dialog-backdrop"
+  role="presentation"
+  onclick={(e) => { if (e.target === e.currentTarget) onClose(); }}
+>
+  <div class="dialog ai-settings-dialog" role="dialog" aria-modal="true" aria-label="AI settings" tabindex="-1">
+    <header class="dialog-header">
+      <div>
+        <span class="eyebrow">Commit AI</span>
+        <h2 class="mt-0.5 text-ink text-base font-bold leading-tight">AI settings</h2>
+      </div>
+      <button class="dialog-close" type="button" onclick={onClose} title="Close">
+        <X size={18} aria-hidden="true" />
+      </button>
+    </header>
+
+    <form class="ai-settings-form" onsubmit={(e) => { e.preventDefault(); void handleSave(); }}>
+      <div class="ai-provider-options" role="radiogroup" aria-label="AI provider">
+        <button
+          type="button"
+          class="ai-provider-option ai-provider-option-local"
+          class:active={provider === "local"}
+          disabled
+          title="Local AI is still in development and not yet available"
+        >
+          <Cpu size={16} aria-hidden="true" />
+          Local AI
+          <span class="ai-provider-badge">In development</span>
+        </button>
+        <button type="button" class="ai-provider-option" class:active={provider === "openai"} onclick={() => { provider = "openai"; }}>
+          <Bot size={16} aria-hidden="true" />
+          OpenAI
+        </button>
+        <button type="button" class="ai-provider-option" class:active={provider === "anthropic"} onclick={() => { provider = "anthropic"; }}>
+          <Bot size={16} aria-hidden="true" />
+          Anthropic (Claude)
+        </button>
+        <button type="button" class="ai-provider-option" class:active={provider === "custom"} onclick={() => { provider = "custom"; }}>
+          <Globe size={16} aria-hidden="true" />
+          Custom endpoint
+        </button>
+      </div>
+
+      {#if provider === "local"}
+        <div class="cred-field">
+          <span class="cred-field-label">Local speed</span>
+          <div class="ai-local-profile-options" role="radiogroup" aria-label="Local AI speed">
+            <button type="button" class="ai-local-profile-option" class:active={localProfile === "fast"} onclick={() => selectLocalProfile("fast")}>
+              <Zap size={15} aria-hidden="true" />
+              Fast
+            </button>
+            <button type="button" class="ai-local-profile-option" class:active={localProfile === "balanced"} onclick={() => selectLocalProfile("balanced")}>
+              <Gauge size={15} aria-hidden="true" />
+              Balanced
+            </button>
+            <button type="button" class="ai-local-profile-option" class:active={localProfile === "detailed"} onclick={() => selectLocalProfile("detailed")}>
+              <Sparkles size={15} aria-hidden="true" />
+              Detailed
+            </button>
+          </div>
+        </div>
+        <label class="cred-field">
+          <span class="cred-field-label">Model</span>
+          <select bind:value={localModelId}>
+            {#each localModels as option (option.id)}
+              <option value={option.id}>{option.label} — {formatSize(option.approx_size_mb)}</option>
+            {/each}
+          </select>
+        </label>
+        <div class="cred-token-hint">
+          <AlertCircle size={13} aria-hidden="true" />
+          <span>
+            Switching downloads the model{selectedLocalModel ? ` (${formatSize(selectedLocalModel.approx_size_mb)})` : ""}
+            in the background — depending on your internet connection this can take several minutes.
+            After that it stays cached locally and loads instantly on the next start.
+            The speed setting only changes Local AI; API providers keep their existing prompt.
+          </span>
+        </div>
+      {:else if provider === "openai"}
+        <label class="cred-field">
+          <span class="cred-field-label">Model</span>
+          <input type="text" bind:value={openaiModel} placeholder="gpt-4o-mini" autocomplete="off" spellcheck="false" />
+        </label>
+        <div class="cred-field">
+          <span class="cred-field-label">API key</span>
+          <div class="cred-input">
+            <Key size={15} class="cred-field-icon" aria-hidden="true" />
+            <input
+              type={showKey ? "text" : "password"}
+              bind:value={openaiApiKey}
+              placeholder="sk-..."
+              autocomplete="off"
+              spellcheck="false"
+              disabled={loadingKeys}
+            />
+            <button type="button" class="cred-reveal" tabindex="-1" onclick={() => { showKey = !showKey; }} aria-label={showKey ? "Hide" : "Show"}>
+              {#if showKey}<EyeOff size={14} aria-hidden="true" />{:else}<Eye size={14} aria-hidden="true" />{/if}
+            </button>
+          </div>
+        </div>
+      {:else if provider === "anthropic"}
+        <label class="cred-field">
+          <span class="cred-field-label">Model</span>
+          <input type="text" bind:value={anthropicModel} placeholder="claude-3-5-haiku-latest" autocomplete="off" spellcheck="false" />
+        </label>
+        <div class="cred-field">
+          <span class="cred-field-label">API key</span>
+          <div class="cred-input">
+            <Key size={15} class="cred-field-icon" aria-hidden="true" />
+            <input
+              type={showKey ? "text" : "password"}
+              bind:value={anthropicApiKey}
+              placeholder="sk-ant-..."
+              autocomplete="off"
+              spellcheck="false"
+              disabled={loadingKeys}
+            />
+            <button type="button" class="cred-reveal" tabindex="-1" onclick={() => { showKey = !showKey; }} aria-label={showKey ? "Hide" : "Show"}>
+              {#if showKey}<EyeOff size={14} aria-hidden="true" />{:else}<Eye size={14} aria-hidden="true" />{/if}
+            </button>
+          </div>
+        </div>
+      {:else}
+        <label class="cred-field">
+          <span class="cred-field-label">Endpoint URL</span>
+          <input type="text" bind:value={customBaseUrl} placeholder="http://localhost:11434/v1" autocomplete="off" spellcheck="false" />
+        </label>
+        <label class="cred-field">
+          <span class="cred-field-label">Model</span>
+          <input type="text" bind:value={customModel} placeholder="llama3.1" autocomplete="off" spellcheck="false" />
+        </label>
+        <div class="cred-field">
+          <span class="cred-field-label">API key (optional)</span>
+          <div class="cred-input">
+            <Key size={15} class="cred-field-icon" aria-hidden="true" />
+            <input
+              type={showKey ? "text" : "password"}
+              bind:value={customApiKey}
+              placeholder="Optional"
+              autocomplete="off"
+              spellcheck="false"
+              disabled={loadingKeys}
+            />
+            <button type="button" class="cred-reveal" tabindex="-1" onclick={() => { showKey = !showKey; }} aria-label={showKey ? "Hide" : "Show"}>
+              {#if showKey}<EyeOff size={14} aria-hidden="true" />{:else}<Eye size={14} aria-hidden="true" />{/if}
+            </button>
+          </div>
+        </div>
+        <div class="cred-token-hint">
+          <Globe size={13} aria-hidden="true" />
+          <span>For local OpenAI-compatible servers like Ollama or LM Studio. The base URL should end in /v1.</span>
+        </div>
+      {/if}
+
+      {#if error}
+        <p class="commit-block-reason">{error}</p>
+      {/if}
+
+      <div class="new-branch-actions">
+        <button class="btn-secondary" type="button" onclick={onClose} disabled={saving}>
+          Cancel
+        </button>
+        <button class="btn-primary" type="submit" disabled={saving || loadingKeys}>
+          {#if saving}
+            <LoaderCircle class="spin" size={16} aria-hidden="true" />
+          {:else}
+            <Check size={16} aria-hidden="true" />
+          {/if}
+          Save
+        </button>
+      </div>
+    </form>
+  </div>
+</div>

src/lib/components/BranchPanel.svelte

@@ -1,7 +1,46 @@
 <script lang="ts">
-  import { Check, ChevronDown, ChevronRight, GitBranch, GitMerge, Plus, X } from "@lucide/svelte";
+  import { Check, ChevronDown, ChevronRight, Folder, FolderOpen, GitBranch, GitMerge, Pencil, Plus, Trash2, X } from "@lucide/svelte";
   import type { GitBranch as GitBranchInfo } from "../types";
 
+  type BranchTreeNode = BranchFolderNode | BranchLeafNode;
+
+  interface BranchFolderNode {
+    kind: "folder";
+    id: string;
+    name: string;
+    children: BranchTreeNode[];
+    branchCount: number;
+    current: boolean;
+    folders: Map<string, BranchFolderNode>;
+  }
+
+  interface BranchLeafNode {
+    kind: "branch";
+    id: string;
+    branch: GitBranchInfo;
+    displayName: string;
+  }
+
+  type BranchRow = BranchFolderRow | BranchLeafRow;
+
+  interface BranchFolderRow {
+    kind: "folder";
+    id: string;
+    name: string;
+    depth: number;
+    branchCount: number;
+    current: boolean;
+  }
+
+  interface BranchLeafRow {
+    kind: "branch";
+    id: string;
+    branch: GitBranchInfo;
+    displayName: string;
+    depth: number;
+    scopeLabel: string;
+  }
+
   interface Props {
     branches: GitBranchInfo[];
     localBranches: GitBranchInfo[];
@@ -11,6 +50,8 @@
     onCheckout: (branch: GitBranchInfo) => void;
     onMerge: (branch: GitBranchInfo) => void;
     onCreateBranch: (branchName: string) => void | Promise<void>;
+    onRenameBranch: (branch: GitBranchInfo) => void | Promise<void>;
+    onDeleteBranch: (branch: GitBranchInfo) => void | Promise<void>;
   }
 
   let {
@@ -22,6 +63,8 @@
     onCheckout = () => {},
     onMerge = () => {},
     onCreateBranch = () => {},
+    onRenameBranch = () => {},
+    onDeleteBranch = () => {},
   }: Props = $props();
 
   let localOpen = $state(true);
@@ -29,6 +72,118 @@
   let createOpen = $state(false);
   let newBranchName = $state("");
   let createInput = $state<HTMLInputElement | null>(null);
+  let panelElement = $state<HTMLElement | null>(null);
+  let contextBranch = $state<GitBranchInfo | null>(null);
+  let contextMenuX = $state(0);
+  let contextMenuY = $state(0);
+  let collapsedBranchFolders = $state<Set<string>>(new Set());
+
+  let localBranchRows = $derived(buildBranchRows("local", localBranches, "local"));
+  let remoteBranchRows = $derived(buildBranchRows("remote", remoteBranches, "remote"));
+
+  function createFolder(id: string, name: string): BranchFolderNode {
+    return {
+      kind: "folder",
+      id,
+      name,
+      children: [],
+      branchCount: 0,
+      current: false,
+      folders: new Map(),
+    };
+  }
+
+  function buildBranchRows(scope: string, branchList: GitBranchInfo[], scopeLabel: string): BranchRow[] {
+    const root = createFolder(`${scope}:root`, "");
+
+    for (const branch of branchList) {
+      const parts = branch.name.split("/").filter(Boolean);
+      const displayName = parts.length > 0 ? parts[parts.length - 1] : branch.name;
+      const folderParts = parts.slice(0, -1);
+      let parent = root;
+
+      for (let index = 0; index < folderParts.length; index += 1) {
+        const folderName = folderParts[index];
+        const folderPath = folderParts.slice(0, index + 1).join("/");
+        let folder = parent.folders.get(folderName);
+
+        if (!folder) {
+          folder = createFolder(`${scope}:folder:${folderPath}`, folderName);
+          parent.folders.set(folderName, folder);
+          parent.children.push(folder);
+        }
+
+        folder.branchCount += 1;
+        folder.current ||= branch.current;
+        parent = folder;
+      }
+
+      parent.children.push({
+        kind: "branch",
+        id: `${scope}:branch:${branch.name}`,
+        branch,
+        displayName,
+      });
+    }
+
+    sortBranchNodes(root.children);
+
+    const rows: BranchRow[] = [];
+    flattenBranchNodes(root.children, rows, 0, scopeLabel);
+    return rows;
+  }
+
+  function sortBranchNodes(nodes: BranchTreeNode[]) {
+    nodes.sort((left, right) => {
+      if (left.kind !== right.kind) return left.kind === "folder" ? -1 : 1;
+      const leftName = left.kind === "folder" ? left.name : left.displayName;
+      const rightName = right.kind === "folder" ? right.name : right.displayName;
+      return leftName.localeCompare(rightName, undefined, { sensitivity: "base" });
+    });
+
+    for (const node of nodes) {
+      if (node.kind === "folder") sortBranchNodes(node.children);
+    }
+  }
+
+  function flattenBranchNodes(nodes: BranchTreeNode[], rows: BranchRow[], depth: number, scopeLabel: string) {
+    for (const node of nodes) {
+      if (node.kind === "folder") {
+        rows.push({
+          kind: "folder",
+          id: node.id,
+          name: node.name,
+          depth,
+          branchCount: node.branchCount,
+          current: node.current,
+        });
+
+        if (isBranchFolderOpen(node.id)) {
+          flattenBranchNodes(node.children, rows, depth + 1, scopeLabel);
+        }
+      } else {
+        rows.push({
+          kind: "branch",
+          id: node.id,
+          branch: node.branch,
+          displayName: node.displayName,
+          depth,
+          scopeLabel,
+        });
+      }
+    }
+  }
+
+  function isBranchFolderOpen(id: string) {
+    return !collapsedBranchFolders.has(id);
+  }
+
+  function toggleBranchFolder(id: string) {
+    const next = new Set(collapsedBranchFolders);
+    if (next.has(id)) next.delete(id);
+    else next.add(id);
+    collapsedBranchFolders = next;
+  }
 
   function openCreateForm() {
     if (!hasRepository || isBusy) return;
@@ -57,9 +212,49 @@
     if (target?.closest("button")) return;
     onCheckout(branch);
   }
+
+  function openBranchContextMenu(event: MouseEvent, branch: GitBranchInfo) {
+    event.preventDefault();
+    event.stopPropagation();
+    if (isBusy || branch.remote) return;
+
+    const rect = panelElement?.getBoundingClientRect();
+    const rawX = rect ? event.clientX - rect.left : event.offsetX;
+    const rawY = rect ? event.clientY - rect.top : event.offsetY;
+    const maxX = Math.max(8, (rect?.width ?? window.innerWidth) - 192);
+    const maxY = Math.max(8, (rect?.height ?? window.innerHeight) - 92);
+
+    contextBranch = branch;
+    contextMenuX = Math.max(8, Math.min(rawX, maxX));
+    contextMenuY = Math.max(8, Math.min(rawY, maxY));
+  }
+
+  function closeBranchContextMenu() {
+    contextBranch = null;
+  }
+
+  async function renameContextBranch() {
+    const branch = contextBranch;
+    if (!branch || isBusy) return;
+    closeBranchContextMenu();
+    await onRenameBranch(branch);
+  }
+
+  async function deleteContextBranch() {
+    const branch = contextBranch;
+    if (!branch || branch.current || isBusy) return;
+    closeBranchContextMenu();
+    await onDeleteBranch(branch);
+  }
+
+  function handleWindowKeydown(event: KeyboardEvent) {
+    if (event.key === "Escape") closeBranchContextMenu();
+  }
 </script>
 
-<section class="panel grid grid-rows-[auto_1fr] overflow-hidden" aria-label="Branches">
+<svelte:window on:click={closeBranchContextMenu} on:keydown={handleWindowKeydown} on:contextmenu|capture={closeBranchContextMenu} />
+
+<section bind:this={panelElement} class="panel branch-panel grid grid-rows-[auto_1fr] overflow-hidden" aria-label="Branches">
   <div class="section-head">
     <div>
       <span class="eyebrow">Branches</span>
@@ -127,34 +322,58 @@
           {#if localBranches.length === 0}
             <div class="branch-empty">No local branches.</div>
           {:else}
-            {#each localBranches as branch (branch.name)}
-              <article
-                class="branch-row"
-                class:current={branch.current}
-                ondblclick={(event) => checkoutOnDoubleClick(event, branch)}
-                title={branch.current ? "Current branch" : "Double-click to checkout"}
-              >
-                <div class="branch-info">
-                  <GitBranch size={16} aria-hidden="true" />
-                  <div>
-                    <strong>{branch.name}</strong>
-                    <span>local</span>
+            {#each localBranchRows as row (row.id)}
+              {#if row.kind === "folder"}
+                <button
+                  class="branch-folder-row"
+                  class:current={row.current}
+                  style={`--branch-indent: ${row.depth * 16}px;`}
+                  type="button"
+                  onclick={() => toggleBranchFolder(row.id)}
+                  aria-expanded={isBranchFolderOpen(row.id)}
+                  title={`${row.name} (${row.branchCount})`}
+                >
+                  {#if isBranchFolderOpen(row.id)}
+                    <ChevronDown size={14} aria-hidden="true" />
+                    <FolderOpen size={15} aria-hidden="true" />
+                  {:else}
+                    <ChevronRight size={14} aria-hidden="true" />
+                    <Folder size={15} aria-hidden="true" />
+                  {/if}
+                  <span class="branch-folder-name">{row.name}</span>
+                  <span class="branch-folder-count">{row.branchCount}</span>
+                </button>
+              {:else}
+                <article
+                  class="branch-row"
+                  class:current={row.branch.current}
+                  style={`--branch-indent: ${row.depth * 16}px;`}
+                  ondblclick={(event) => checkoutOnDoubleClick(event, row.branch)}
+                  oncontextmenu={(event) => openBranchContextMenu(event, row.branch)}
+                  title={row.branch.current ? "Current branch" : row.branch.name}
+                >
+                  <div class="branch-info">
+                    <GitBranch size={16} aria-hidden="true" />
+                    <div>
+                      <strong>{row.displayName}</strong>
+                      <span>{row.scopeLabel}</span>
+                    </div>
                   </div>
-                </div>
-                {#if branch.current}
-                  <span class="pill pill-active">Current</span>
-                {:else}
-                  <div class="branch-actions">
-                    <button class="btn-sm" type="button" onclick={() => onCheckout(branch)} disabled={isBusy}>
-                      Checkout
-                    </button>
-                    <button class="btn-sm" type="button" onclick={() => onMerge(branch)} disabled={isBusy} title="Merge into current">
-                      <GitMerge size={15} aria-hidden="true" />
-                      Merge
-                    </button>
-                  </div>
-                {/if}
-              </article>
+                  {#if row.branch.current}
+                    <span class="pill pill-active">Current</span>
+                  {:else}
+                    <div class="branch-actions">
+                      <button class="btn-sm" type="button" onclick={() => onCheckout(row.branch)} disabled={isBusy}>
+                        Checkout
+                      </button>
+                      <button class="btn-sm" type="button" onclick={() => onMerge(row.branch)} disabled={isBusy} title="Merge into current">
+                        <GitMerge size={15} aria-hidden="true" />
+                        Merge
+                      </button>
+                    </div>
+                  {/if}
+                </article>
+              {/if}
             {/each}
           {/if}
         {/if}
@@ -180,38 +399,87 @@
           {#if remoteBranches.length === 0}
             <div class="branch-empty">No remote branches.</div>
           {:else}
-            {#each remoteBranches as branch (branch.name)}
-              <article
-                class="branch-row"
-                class:current={branch.current}
-                ondblclick={(event) => checkoutOnDoubleClick(event, branch)}
-                title={branch.current ? "Current branch" : "Double-click to checkout"}
-              >
-                <div class="branch-info">
-                  <GitBranch size={16} aria-hidden="true" />
-                  <div>
-                    <strong>{branch.name}</strong>
-                    <span>remote</span>
+            {#each remoteBranchRows as row (row.id)}
+              {#if row.kind === "folder"}
+                <button
+                  class="branch-folder-row"
+                  class:current={row.current}
+                  style={`--branch-indent: ${row.depth * 16}px;`}
+                  type="button"
+                  onclick={() => toggleBranchFolder(row.id)}
+                  aria-expanded={isBranchFolderOpen(row.id)}
+                  title={`${row.name} (${row.branchCount})`}
+                >
+                  {#if isBranchFolderOpen(row.id)}
+                    <ChevronDown size={14} aria-hidden="true" />
+                    <FolderOpen size={15} aria-hidden="true" />
+                  {:else}
+                    <ChevronRight size={14} aria-hidden="true" />
+                    <Folder size={15} aria-hidden="true" />
+                  {/if}
+                  <span class="branch-folder-name">{row.name}</span>
+                  <span class="branch-folder-count">{row.branchCount}</span>
+                </button>
+              {:else}
+                <article
+                  class="branch-row"
+                  class:current={row.branch.current}
+                  style={`--branch-indent: ${row.depth * 16}px;`}
+                  ondblclick={(event) => checkoutOnDoubleClick(event, row.branch)}
+                  title={row.branch.current ? "Current branch" : row.branch.name}
+                >
+                  <div class="branch-info">
+                    <GitBranch size={16} aria-hidden="true" />
+                    <div>
+                      <strong>{row.displayName}</strong>
+                      <span>{row.scopeLabel}</span>
+                    </div>
                   </div>
-                </div>
-                {#if branch.current}
-                  <span class="pill pill-active">Current</span>
-                {:else}
-                  <div class="branch-actions">
-                    <button class="btn-sm" type="button" onclick={() => onCheckout(branch)} disabled={isBusy}>
-                      Checkout
-                    </button>
-                    <button class="btn-sm" type="button" onclick={() => onMerge(branch)} disabled={isBusy} title="Merge into current">
-                      <GitMerge size={15} aria-hidden="true" />
-                      Merge
-                    </button>
-                  </div>
-                {/if}
-              </article>
+                  {#if row.branch.current}
+                    <span class="pill pill-active">Current</span>
+                  {:else}
+                    <div class="branch-actions">
+                      <button class="btn-sm" type="button" onclick={() => onCheckout(row.branch)} disabled={isBusy}>
+                        Checkout
+                      </button>
+                      <button class="btn-sm" type="button" onclick={() => onMerge(row.branch)} disabled={isBusy} title="Merge into current">
+                        <GitMerge size={15} aria-hidden="true" />
+                        Merge
+                      </button>
+                    </div>
+                  {/if}
+                </article>
+              {/if}
             {/each}
           {/if}
         {/if}
       </div>
     </div>
   {/if}
+
+  {#if contextBranch}
+    <div
+      class="branch-context-menu"
+      style={`left: ${contextMenuX}px; top: ${contextMenuY}px;`}
+      role="menu"
+      tabindex="-1"
+      aria-label={`Actions for ${contextBranch.name}`}
+    >
+      <button type="button" role="menuitem" onclick={renameContextBranch} disabled={isBusy}>
+        <Pencil size={14} aria-hidden="true" />
+        Rename
+      </button>
+      <button
+        class="danger"
+        type="button"
+        role="menuitem"
+        onclick={deleteContextBranch}
+        disabled={isBusy || contextBranch.current}
+        title={contextBranch.current ? "Current branch cannot be deleted" : "Delete local branch"}
+      >
+        <Trash2 size={14} aria-hidden="true" />
+        Delete
+      </button>
+    </div>
+  {/if}
 </section>

src/lib/components/CommitPanel.svelte

@@ -1,5 +1,6 @@
 <script lang="ts">
-  import { Check, LoaderCircle } from "@lucide/svelte";
+  import { Check, LoaderCircle, Settings, Sparkles } from "@lucide/svelte";
+  import type { CommitAiPhase, CommitAiProvider } from "../types";
 
   interface Props {
     commitMessage: string;
@@ -9,8 +10,13 @@
     isBusy: boolean;
     operation: string;
     stagedCount: number;
+    commitAiProvider: CommitAiProvider;
+    commitAiPhase: CommitAiPhase;
+    commitAiGenerating: boolean;
     onCommit: () => void;
     onCommitMessageChange: (msg: string) => void;
+    onGenerateCommitMessage: () => void;
+    onOpenAiSettings: () => void;
   }
 
   let {
@@ -21,17 +27,38 @@
     isBusy = false,
     operation = "",
     stagedCount = 0,
+    commitAiProvider = "local",
+    commitAiPhase = "idle",
+    commitAiGenerating = false,
     onCommit = () => {},
     onCommitMessageChange = () => {},
+    onGenerateCommitMessage = () => {},
+    onOpenAiSettings = () => {},
   }: Props = $props();
 
   function handleSubmit(event: SubmitEvent) {
     event.preventDefault();
     onCommit();
   }
+
+  function aiButtonTitle(provider: CommitAiProvider, phase: CommitAiPhase, staged: number): string {
+    if (staged === 0) return "Stage changes first";
+    if (provider === "local" && phase === "loading") return "AI model is downloading/loading — this happens once";
+    if (provider === "local" && phase === "error") return "AI model failed to load — check AI settings";
+    return "Generate commit message with AI from the staged diff";
+  }
+
+  let localModelLoading = $derived(commitAiProvider === "local" && commitAiPhase === "loading");
+  let canGenerate = $derived(
+    hasRepository &&
+    !isBusy &&
+    !commitAiGenerating &&
+    stagedCount > 0 &&
+    (commitAiProvider !== "local" || commitAiPhase === "ready"),
+  );
 </script>
 
-<section class="panel flex flex-col" aria-label="Commit">
+<section class="panel commit-panel" aria-label="Commit">
   <div class="section-head">
     <div>
       <span class="eyebrow">Commit</span>
@@ -50,13 +77,39 @@
     {#if commitBlockReason}
       <p class="commit-block-reason">{commitBlockReason}</p>
     {/if}
-    <button class="btn-primary w-full flex-shrink-0" type="submit" disabled={!canCommit} title={commitBlockReason || "Commit staged changes"}>
-      {#if operation === "Committing"}
-        <LoaderCircle class="spin" size={16} aria-hidden="true" />
-      {:else}
-        <Check size={16} aria-hidden="true" />
-      {/if}
-      Commit
-    </button>
+    <div class="commit-actions-row flex-shrink-0">
+      <button class="btn-primary flex-1" type="submit" disabled={!canCommit} title={commitBlockReason || "Commit staged changes"}>
+        {#if operation === "Committing"}
+          <LoaderCircle class="spin" size={16} aria-hidden="true" />
+        {:else}
+          <Check size={16} aria-hidden="true" />
+        {/if}
+        Commit
+      </button>
+      <button
+        class="btn-secondary commit-ai-button"
+        type="button"
+        onclick={onGenerateCommitMessage}
+        disabled={!canGenerate}
+        title={aiButtonTitle(commitAiProvider, commitAiPhase, stagedCount)}
+      >
+        {#if commitAiGenerating || localModelLoading}
+          <LoaderCircle class="spin" size={16} aria-hidden="true" />
+        {:else}
+          <Sparkles size={16} aria-hidden="true" />
+        {/if}
+        AI
+      </button>
+      <button
+        class="btn-secondary commit-ai-settings-button"
+        type="button"
+        onclick={onOpenAiSettings}
+        disabled={isBusy}
+        title="AI settings"
+        aria-label="AI settings"
+      >
+        <Settings size={16} aria-hidden="true" />
+      </button>
+    </div>
   </form>
 </section>

src/lib/components/CredentialDialog.svelte

@@ -44,10 +44,10 @@
     (mode === "token" || username.trim().length > 0),
   );
   let actionLabel = $derived(action === "push" ? "Push" : "Pull");
-  let actionTitle = $derived(action === "push" ? "Push authentifizieren" : "Pull authentifizieren");
+  let actionTitle = $derived(action === "push" ? "Authenticate push" : "Authenticate pull");
   let actionHint = $derived(action === "push"
-    ? "Der Remote braucht Schreibrechte. Nutze ein Passwort oder einen Token mit passenden Repository-Rechten."
-    : "Der Remote braucht Zugriff auf das Repository. Nutze deine Git-Zugangsdaten oder einen Personal Access Token.");
+    ? "The remote needs write access. Use a password or a token with the appropriate repository permissions."
+    : "The remote needs access to the repository. Use your Git credentials or a personal access token.");
 
   function handleSubmit(e: SubmitEvent) {
     e.preventDefault();
@@ -66,7 +66,7 @@
   role="presentation"
   onclick={(e) => { if (e.target === e.currentTarget) onCancel(); }}
 >
-  <div class="cred-card" role="dialog" aria-modal="true" aria-label="Git-Zugangsdaten" tabindex="-1">
+  <div class="cred-card" role="dialog" aria-modal="true" aria-label="Git credentials" tabindex="-1">
     <div class="cred-hero">
       <div class="cred-hero-top">
         <div class="cred-hero-icon">
@@ -80,7 +80,7 @@
           <p class="cred-hero-label">{actionLabel} Remote</p>
           <h2 class="cred-hero-title">{actionTitle}</h2>
         </div>
-        <button class="cred-close" type="button" onclick={onCancel} title="Abbrechen" aria-label="Abbrechen">
+        <button class="cred-close" type="button" onclick={onCancel} title="Cancel" aria-label="Cancel">
           <X size={16} aria-hidden="true" />
         </button>
       </div>
@@ -89,12 +89,12 @@
 
       <div class="cred-security-note">
         <ShieldCheck size={14} aria-hidden="true" />
-        <span>Beim Speichern landet der Token verschluesselt im Schluesselbund des Betriebssystems – nie im Klartext.</span>
+        <span>When saved, the token is stored encrypted in the operating system's keychain — never in plain text.</span>
       </div>
     </div>
 
     <form class="cred-body" onsubmit={handleSubmit}>
-      <div class="cred-segment" role="group" aria-label="Authentifizierungsart">
+      <div class="cred-segment" role="group" aria-label="Authentication method">
         <button
           type="button"
           class="cred-seg-btn"
@@ -103,7 +103,7 @@
           aria-pressed={mode === "credentials"}
         >
           <User size={13} aria-hidden="true" />
-          Username + Passwort
+          Username + password
         </button>
         <button
           type="button"
@@ -127,7 +127,7 @@
                 id="cred-username"
                 type="text"
                 bind:value={username}
-                placeholder="z. B. mein-github-username"
+                placeholder="e.g. my-github-username"
                 autocomplete="username"
                 disabled={isBusy}
               />
@@ -137,7 +137,7 @@
 
         <div class="cred-field">
           <label class="cred-field-label" for="cred-password">
-            {mode === "token" ? "Token" : "Passwort"}
+            {mode === "token" ? "Token" : "Password"}
           </label>
           <div class="cred-input">
             <Lock size={15} class="cred-field-icon" aria-hidden="true" />
@@ -146,8 +146,8 @@
               type={showPassword ? "text" : "password"}
               bind:value={password}
               placeholder={mode === "token"
-                ? "ghp_... oder anderer Zugangstoken"
-                : "Passwort oder Personal Access Token"}
+                ? "ghp_... or another access token"
+                : "Password or personal access token"}
               autocomplete="current-password"
               disabled={isBusy}
             />
@@ -156,7 +156,7 @@
               class="cred-reveal"
               onclick={() => { showPassword = !showPassword; }}
               tabindex="-1"
-              aria-label={showPassword ? "Verbergen" : "Anzeigen"}
+              aria-label={showPassword ? "Hide" : "Show"}
             >
               {#if showPassword}
                 <EyeOff size={14} aria-hidden="true" />
@@ -171,7 +171,7 @@
       {#if mode === "token"}
         <div class="cred-token-hint">
           <Key size={13} aria-hidden="true" />
-          <span>Username wird automatisch auf <code>oauth2</code> gesetzt. Das funktioniert mit GitHub, GitLab und Bitbucket.</span>
+          <span>Username is automatically set to <code>oauth2</code>. This works with GitHub, GitLab, and Bitbucket.</span>
         </div>
       {/if}
 
@@ -184,26 +184,26 @@
 
       {#if saveSession}
         <div class="cred-expiry">
-          <label class="cred-field-label" for="cred-expiry">Ablaufdatum (optional)</label>
+          <label class="cred-field-label" for="cred-expiry">Expiration date (optional)</label>
           <input
             id="cred-expiry"
             type="date"
             bind:value={expiresAt}
             disabled={isBusy}
           />
-          <span class="cred-expiry-hint">Nach diesem Datum wird automatisch erneut nach dem Login gefragt.</span>
+          <span class="cred-expiry-hint">After this date you'll automatically be asked to log in again.</span>
         </div>
       {/if}
 
       <div class="cred-footer">
         <label class="cred-save">
           <input type="checkbox" bind:checked={saveSession} disabled={isBusy} />
-          <span>Im Schluesselbund speichern</span>
+          <span>Save in keychain</span>
         </label>
 
         <div class="cred-btns">
           <button type="button" class="cred-cancel" onclick={onCancel} disabled={isBusy}>
-            Abbrechen
+            Cancel
           </button>
           <button class="cred-submit" type="submit" disabled={!canSubmit}>
             {#if isBusy}

src/lib/components/DiscardConfirmDialog.svelte

@@ -0,0 +1,74 @@
+<script lang="ts">
+  import { AlertTriangle, LoaderCircle, RotateCcw, X } from "@lucide/svelte";
+  import type { GitFileStatus } from "../types";
+
+  interface Props {
+    file: GitFileStatus;
+    staged: boolean;
+    scope: "file" | "hunk";
+    isBusy: boolean;
+    onConfirm: () => void | Promise<void>;
+    onClose: () => void;
+  }
+
+  let {
+    file,
+    staged = false,
+    scope = "file",
+    isBusy = false,
+    onConfirm = () => {},
+    onClose = () => {},
+  }: Props = $props();
+
+  let targetPath = $derived(file.old_path ? `${file.old_path} -> ${file.path}` : file.path);
+  let title = $derived(scope === "hunk" ? "Discard hunk?" : "Discard file changes?");
+  let scopeLabel = $derived(scope === "hunk" ? "Selected hunk" : "File changes");
+  let sourceLabel = $derived(staged ? "staged changes" : "unstaged changes");
+
+  function closeFromBackdrop(event: MouseEvent) {
+    if (isBusy || event.target !== event.currentTarget) return;
+    onClose();
+  }
+</script>
+
+<div class="dialog-backdrop" role="presentation" onclick={closeFromBackdrop}>
+  <div class="dialog discard-confirm-dialog" role="dialog" aria-modal="true" aria-label={title}>
+    <header class="dialog-header">
+      <div>
+        <span class="eyebrow">Confirm discard</span>
+        <p class="dialog-title">{title}</p>
+      </div>
+      <button class="btn-sm dialog-close" type="button" onclick={onClose} disabled={isBusy} aria-label="Close">
+        <X size={16} aria-hidden="true" />
+      </button>
+    </header>
+
+    <div class="discard-confirm-body">
+      <div class="discard-warning-icon" aria-hidden="true">
+        <AlertTriangle size={22} />
+      </div>
+
+      <div class="discard-confirm-copy">
+        <p>
+          This will reset the {sourceLabel} for the {scopeLabel.toLowerCase()} below.
+        </p>
+        <code class="discard-target" title={targetPath}>{targetPath}</code>
+        <p class="discard-warning-text">
+          This cannot be undone. If the file only exists in your working tree, it can be deleted entirely.
+        </p>
+      </div>
+    </div>
+
+    <footer class="discard-confirm-actions">
+      <button class="btn-secondary" type="button" onclick={onClose} disabled={isBusy}>Cancel</button>
+      <button class="btn-danger" type="button" onclick={onConfirm} disabled={isBusy}>
+        {#if isBusy}
+          <LoaderCircle class="spin" size={15} aria-hidden="true" />
+        {:else}
+          <RotateCcw size={15} aria-hidden="true" />
+        {/if}
+        Discard
+      </button>
+    </footer>
+  </div>
+</div>

src/lib/components/ExplorerPanel.svelte

@@ -17,6 +17,7 @@
     FileVideo,
     Folder,
     FolderOpen,
+    ExternalLink,
     Terminal,
   } from "@lucide/svelte";
   import { languageIconForPath } from "../languageIcons";
@@ -34,6 +35,7 @@
     onExpandAllFolders: () => void;
     onCollapseAllFolders: () => void;
     onSelectNode: (node: ExplorerNode) => void;
+    onOpenFile: (node: ExplorerNode) => void;
   }
 
   let {
@@ -47,8 +49,13 @@
     onExpandAllFolders = () => {},
     onCollapseAllFolders = () => {},
     onSelectNode = () => {},
+    onOpenFile = () => {},
   }: Props = $props();
 
+  let contextNode = $state<ExplorerNode | null>(null);
+  let contextMenuX = $state(0);
+  let contextMenuY = $state(0);
+
   function mergeExplorerStatus(current: FileStatusKind | null, next: FileStatusKind | null): FileStatusKind | null {
     if (!next) return current;
     if (!current) return next;
@@ -154,12 +161,39 @@
     return "text";
   }
 
+  function openFileContextMenu(event: MouseEvent, node: ExplorerNode) {
+    if (node.kind !== "file") return;
+    event.preventDefault();
+    event.stopPropagation();
+
+    contextNode = node;
+    contextMenuX = Math.max(8, Math.min(event.clientX + 2, window.innerWidth - 192));
+    contextMenuY = Math.max(8, Math.min(event.clientY + 2, window.innerHeight - 56));
+  }
+
+  function closeFileContextMenu() {
+    contextNode = null;
+  }
+
+  function openContextFile() {
+    const node = contextNode;
+    if (!node || node.kind !== "file") return;
+    closeFileContextMenu();
+    onOpenFile(node);
+  }
+
+  function handleWindowKeydown(event: KeyboardEvent) {
+    if (event.key === "Escape") closeFileContextMenu();
+  }
+
   let explorerTree = $derived(buildExplorerTree(repoFiles));
   let visibleNodes = $derived(flattenExplorerTree(explorerTree, expandedExplorerPaths));
   let hasFolders = $derived(explorerTree.some((node) => node.kind === "folder"));
 </script>
 
-<section class="panel grid grid-rows-[auto_1fr] overflow-hidden" aria-label="File explorer">
+<svelte:window on:click={closeFileContextMenu} on:keydown={handleWindowKeydown} on:contextmenu|capture={closeFileContextMenu} />
+
+<section class="panel explorer-panel grid grid-rows-[auto_1fr] overflow-hidden" aria-label="File explorer">
   <div class="section-head">
     <div>
       <span class="eyebrow">Explorer</span>
@@ -264,6 +298,7 @@
             class="explorer-select"
             type="button"
             onclick={() => onSelectNode(node)}
+            oncontextmenu={(event) => openFileContextMenu(event, node)}
             disabled={isBusy}
             title={`Show history for ${node.path}`}
           >
@@ -279,4 +314,26 @@
       {/each}
     </div>
   {/if}
+
 </section>
+
+{#if contextNode}
+  <div
+    class="explorer-context-menu"
+    style={`left: ${contextMenuX}px; top: ${contextMenuY}px;`}
+    role="menu"
+    tabindex="-1"
+    aria-label={`Actions for ${contextNode.path}`}
+  >
+    <button
+      type="button"
+      role="menuitem"
+      onclick={openContextFile}
+      disabled={contextNode.status === "deleted"}
+      title={contextNode.status === "deleted" ? "Deleted files cannot be revealed in Explorer" : "Reveal this file in Explorer"}
+    >
+      <ExternalLink size={14} aria-hidden="true" />
+      Open in Explorer
+    </button>
+  </div>
+{/if}

src/lib/components/FileHistoryPanel.svelte

@@ -8,6 +8,7 @@
     selectedExplorerLabel: string;
     hasRepository: boolean;
     isBusy: boolean;
+    isLoading?: boolean;
     onDiff: (commit: GitCommit) => void;
     onRestore: (commit: GitCommit) => void;
   }
@@ -18,6 +19,7 @@
     selectedExplorerLabel = "File history",
     hasRepository = false,
     isBusy = false,
+    isLoading = false,
     onDiff = () => {},
     onRestore = () => {},
   }: Props = $props();
@@ -89,6 +91,25 @@
     <div class="blank-state">No repository loaded.</div>
   {:else if !selectedExplorerPath}
     <div class="blank-state">Select a file in Explorer.</div>
+  {:else if isLoading}
+    <div class="file-history-loading" role="status" aria-live="polite">
+      <svg class="file-history-loading-graph" viewBox="0 0 120 120" aria-hidden="true">
+        <defs>
+          <linearGradient id="fhl-line" x1="0" y1="0" x2="1" y2="1">
+            <stop offset="0%" stop-color="#646cff" />
+            <stop offset="100%" stop-color="#41d1ff" />
+          </linearGradient>
+        </defs>
+        <circle class="fhl-ring" cx="60" cy="60" r="52" />
+        <path class="fhl-trunk" d="M42 22 L42 98" />
+        <path class="fhl-branch" d="M42 44 C42 62, 82 58, 82 76 L82 88" />
+        <circle class="fhl-node fhl-n1" cx="42" cy="30" r="6" />
+        <circle class="fhl-node fhl-n2" cx="42" cy="60" r="6" />
+        <circle class="fhl-node fhl-n3" cx="82" cy="88" r="6" />
+        <circle class="fhl-node fhl-n4" cx="42" cy="90" r="6" />
+      </svg>
+      <span class="file-history-loading-label">Loading history…</span>
+    </div>
   {:else if fileHistory.length === 0}
     <div class="blank-state">No history returned for this selection.</div>
   {:else}

src/lib/components/HistoryPanel.svelte

@@ -113,6 +113,16 @@
     return file.old_path ? `${file.old_path} -> ${file.path}` : file.path;
   }
 
+  function baseName(path: string): string {
+    return path.split(/[\\/]/).filter(Boolean).pop() ?? path;
+  }
+
+  function commitFileName(file: GitCommitFile): string {
+    return file.old_path
+      ? `${baseName(file.old_path)} -> ${baseName(file.path)}`
+      : baseName(file.path);
+  }
+
   function formatCommitDate(value: string): string {
     const date = new Date(value);
     if (Number.isNaN(date.getTime())) return value;
@@ -208,10 +218,10 @@
                         type="button"
                         onclick={() => onPreviewCommitFile(item, file)}
                         disabled={isBusy}
-                        title="Show differences before restoring"
+                        title={`Show differences before restoring - ${displayCommitFile(file)}`}
                       >
                         <span class={`status-badge ${file.status}`}>{statusLabel(file.status)}</span>
-                        <strong>{displayCommitFile(file)}</strong>
+                        <strong>{commitFileName(file)}</strong>
                       </button>
                     {/each}
                   </div>
@@ -226,7 +236,7 @@
                   <GitBranch size={15} aria-hidden="true" />
                   Branch
                 </button>
-                <button class="btn-sm" type="button" onclick={() => onRestoreCommit(item)} disabled={isBusy} title="Reset current branch to this commit">
+                <button class="btn-sm" type="button" onclick={() => onRestoreCommit(item)} disabled={isBusy} title="Bring this commit's files into your working tree as unstaged changes (no history is changed)">
                   <RotateCcw size={15} aria-hidden="true" />
                   Restore
                 </button>

src/lib/components/RenameBranchDialog.svelte

@@ -0,0 +1,77 @@
+<script lang="ts">
+  import { GitBranch, LoaderCircle, X } from "@lucide/svelte";
+  import type { GitBranch as GitBranchInfo } from "../types";
+
+  interface Props {
+    branch: GitBranchInfo;
+    isBusy: boolean;
+    onRename: (name: string) => void;
+    onClose: () => void;
+  }
+
+  let {
+    branch,
+    isBusy = false,
+    onRename = () => {},
+    onClose = () => {},
+  }: Props = $props();
+
+  let name = $state("");
+
+  $effect(() => {
+    name = branch.name;
+  });
+
+  function submit(event: SubmitEvent) {
+    event.preventDefault();
+    const value = name.trim();
+    if (!value || value === branch.name) return;
+    onRename(value);
+  }
+</script>
+
+<div
+  class="dialog-backdrop"
+  role="presentation"
+  onclick={(e) => { if (e.target === e.currentTarget) onClose(); }}
+>
+  <div class="dialog rename-branch-dialog" role="dialog" aria-modal="true" aria-label="Rename branch" tabindex="-1">
+    <header class="dialog-header">
+      <div>
+        <span class="eyebrow">Rename branch</span>
+        <h2 class="mt-0.5 text-ink text-base font-bold leading-tight">{branch.name}</h2>
+      </div>
+      <button class="dialog-close" type="button" onclick={onClose} title="Close">
+        <X size={18} aria-hidden="true" />
+      </button>
+    </header>
+
+    <form class="rename-branch-form" onsubmit={submit}>
+      <label class="new-branch-field">
+        <span>Branch name</span>
+        <!-- svelte-ignore a11y_autofocus -->
+        <input
+          bind:value={name}
+          autocomplete="off"
+          spellcheck="false"
+          disabled={isBusy}
+          autofocus
+        />
+      </label>
+
+      <div class="new-branch-actions">
+        <button class="btn-secondary" type="button" onclick={onClose} disabled={isBusy}>
+          Cancel
+        </button>
+        <button class="btn-primary" type="submit" disabled={isBusy || name.trim().length === 0 || name.trim() === branch.name}>
+          {#if isBusy}
+            <LoaderCircle class="spin" size={16} aria-hidden="true" />
+          {:else}
+            <GitBranch size={16} aria-hidden="true" />
+          {/if}
+          Rename
+        </button>
+      </div>
+    </form>
+  </div>
+</div>

src/lib/components/RepoLoadingOverlay.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  export let label = "Repository wird geöffnet";
+  export let label = "Opening repository";
   export let repoName = "";
 </script>
 

src/lib/components/StatusPanel.svelte

@@ -9,6 +9,8 @@
     hasRepository: boolean;
     isBusy: boolean;
     status: GitStatus | null;
+    selectedFilePath: string;
+    onSelectFile: (file: GitFileStatus) => void;
     onStage: (file: GitFileStatus) => void;
     onUnstage: (file: GitFileStatus) => void;
     onDiscard: (file: GitFileStatus, staged: boolean) => void;
@@ -24,6 +26,8 @@
     hasRepository = false,
     isBusy = false,
     status = null,
+    selectedFilePath = "",
+    onSelectFile = () => {},
     onStage = () => {},
     onUnstage = () => {},
     onDiscard = () => {},
@@ -102,9 +106,19 @@
   {:else}
     <div class="overflow-auto p-2">
       {#each changedFiles as file (`${file.old_path ?? ""}:${file.path}`)}
-        <article class="file-row">
+        <article
+          class="file-row"
+          class:selected={selectedFilePath === file.path}
+        >
           <div class="file-title">
-            <strong title={displayPath(file)}>{fileName(file)}</strong>
+            <button
+              class="file-title-button"
+              type="button"
+              onclick={() => onSelectFile(file)}
+              title={`Select ${displayPath(file)} in Explorer`}
+            >
+              <strong>{fileName(file)}</strong>
+            </button>
           </div>
 
           <div class="change-lanes">
@@ -121,7 +135,7 @@
                   </button>
                   <button class="btn-sm" type="button" onclick={() => onPatch(file, true)} disabled={isBusy || !canPatch(file.staged)} title="Stage, unstage, or discard selected lines">
                     <FileDiff size={14} aria-hidden="true" />
-                    Lines
+                    Details
                   </button>
                   <button class="btn-sm" type="button" onclick={() => onDiscard(file, true)} disabled={isBusy} title="Discard staged changes">
                     <RotateCcw size={14} aria-hidden="true" />
@@ -146,7 +160,7 @@
                   </button>
                   <button class="btn-sm" type="button" onclick={() => onPatch(file, false)} disabled={isBusy || !canPatch(file.unstaged)} title="Stage or discard selected lines">
                     <FileDiff size={14} aria-hidden="true" />
-                    Lines
+                    Details
                   </button>
                   <button class="btn-sm" type="button" onclick={() => onDiscard(file, false)} disabled={isBusy} title="Discard unstaged changes">
                     <RotateCcw size={14} aria-hidden="true" />

src/lib/git.ts

@@ -1,6 +1,9 @@
 import { invoke } from "@tauri-apps/api/core";
 
 import type {
+  CommitAiLocalProfile,
+  CommitAiProvider,
+  CommitAiStatus,
   ConflictFile,
   GitBranch,
   GitCommit,
@@ -8,6 +11,7 @@ import type {
   GitRepositoryFile,
   GitSearchHit,
   GitStatus,
+  LocalModelOption,
   PatchApplyAction,
   RepositoryBundle,
   StoredCredential,
@@ -17,6 +21,14 @@ export function openRepository(path: string): Promise<GitStatus> {
   return invoke<GitStatus>("open_repository", { path });
 }
 
+export function openRepoInExplorer(path: string): Promise<void> {
+  return invoke<void>("open_repo_in_explorer", { path });
+}
+
+export function openRepositoryFile(path: string, file: string): Promise<void> {
+  return invoke<void>("open_repository_file", { path, file });
+}
+
 export function openRepositoryBundle(path: string, commitLimit = 100): Promise<RepositoryBundle> {
   return invoke<RepositoryBundle>("open_repository_bundle", { path, commitLimit });
 }
@@ -41,6 +53,18 @@ export function createBranch(
   return invoke<GitStatus>("create_branch", { path, branch, startPoint: startPoint ?? null });
 }
 
+export function renameBranch(
+  path: string,
+  oldBranch: string,
+  newBranch: string,
+): Promise<GitStatus> {
+  return invoke<GitStatus>("rename_branch", { path, oldBranch, newBranch });
+}
+
+export function deleteBranch(path: string, branch: string): Promise<GitStatus> {
+  return invoke<GitStatus>("delete_branch", { path, branch });
+}
+
 export function stageFiles(path: string, files: string[]): Promise<GitStatus> {
   return invoke<GitStatus>("stage_files", { path, files });
 }
@@ -74,6 +98,39 @@ export function commit(path: string, message: string): Promise<GitStatus> {
   return invoke<GitStatus>("commit", { path, message });
 }
 
+export function commitAiStatus(): Promise<CommitAiStatus> {
+  return invoke<CommitAiStatus>("commit_ai_status");
+}
+
+export function commitAiLoad(modelId: string): Promise<void> {
+  return invoke<void>("commit_ai_load", { modelId });
+}
+
+export function commitAiLocalModels(): Promise<LocalModelOption[]> {
+  return invoke<LocalModelOption[]>("commit_ai_local_models");
+}
+
+export interface CommitAiGenerateOptions {
+  notes?: string;
+  provider: CommitAiProvider;
+  localProfile?: CommitAiLocalProfile;
+  model?: string;
+  apiKey?: string;
+  baseUrl?: string;
+}
+
+export function commitAiGenerate(path: string, options: CommitAiGenerateOptions): Promise<string> {
+  return invoke<string>("commit_ai_generate", {
+    path,
+    notes: options.notes,
+    provider: options.provider,
+    localProfile: options.localProfile,
+    model: options.model,
+    apiKey: options.apiKey,
+    baseUrl: options.baseUrl,
+  });
+}
+
 export function pull(path: string, username?: string, password?: string): Promise<GitStatus> {
   return invoke<GitStatus>("pull", { path, username: username ?? null, password: password ?? null });
 }
@@ -127,8 +184,17 @@ export function listRepositoryFiles(path: string): Promise<GitRepositoryFile[]>
   return invoke<GitRepositoryFile[]>("list_repository_files", { path });
 }
 
-export function listFileHistory(path: string, file: string, limit = 100): Promise<GitCommit[]> {
-  return invoke<GitCommit[]>("list_file_history", { path, file, limit });
+export function listFileHistory(
+  path: string,
+  file: string,
+  limit = 100,
+  requestId?: string,
+): Promise<GitCommit[]> {
+  return invoke<GitCommit[]>("list_file_history", { path, file, limit, requestId: requestId ?? null });
+}
+
+export function cancelFileHistory(requestId: string): Promise<void> {
+  return invoke<void>("cancel_file_history", { requestId });
 }
 
 export function compareCommits(

src/lib/types.ts

@@ -7,6 +7,32 @@ export type FileStatusKind =
   | "conflicted"
   | "unknown";
 
+export type CommitAiPhase = "idle" | "loading" | "ready" | "error";
+export type CommitAiProvider = "local" | "openai" | "anthropic" | "custom";
+export type CommitAiLocalProfile = "fast" | "balanced" | "detailed";
+
+export interface CommitAiStatus {
+  phase: CommitAiPhase;
+  model_id: string | null;
+  error: string | null;
+}
+
+export interface LocalModelOption {
+  id: string;
+  label: string;
+  approx_size_mb: number;
+}
+
+export interface AiSettings {
+  provider: CommitAiProvider;
+  localModelId: string;
+  localProfile: CommitAiLocalProfile;
+  openaiModel: string;
+  anthropicModel: string;
+  customBaseUrl: string;
+  customModel: string;
+}
+
 export interface GitStatus {
   repo_path: string;
   current_branch: string | null;