feat: add git integration panel

- Add Rust backend for git operations (status, diff, branches, commit, push, pull, fetch, stage, unstage, discard, create branch)
- Add GitPanel.svelte component with three tabs: Changes, Branches, History
- Integrate git button into StatusBar with link icon
- Use consistent accent color theming for buttons

src-tauri/src/git.rs

@@ -0,0 +1,288 @@
+use serde::{Deserialize, Serialize};
+use std::process::Command;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GitStatus {
+    pub is_repo: bool,
+    pub branch: Option<String>,
+    pub upstream: Option<String>,
+    pub ahead: u32,
+    pub behind: u32,
+    pub staged: Vec<GitFileChange>,
+    pub unstaged: Vec<GitFileChange>,
+    pub untracked: Vec<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GitFileChange {
+    pub path: String,
+    pub status: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GitBranch {
+    pub name: String,
+    pub is_current: bool,
+    pub is_remote: bool,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GitLogEntry {
+    pub hash: String,
+    pub short_hash: String,
+    pub author: String,
+    pub date: String,
+    pub message: String,
+}
+
+fn run_git_command(working_dir: &str, args: &[&str]) -> Result<String, String> {
+    let output = Command::new("git")
+        .args(args)
+        .current_dir(working_dir)
+        .output()
+        .map_err(|e| format!("Failed to execute git: {}", e))?;
+
+    if output.status.success() {
+        Ok(String::from_utf8_lossy(&output.stdout).to_string())
+    } else {
+        Err(String::from_utf8_lossy(&output.stderr).to_string())
+    }
+}
+
+#[tauri::command]
+pub fn git_status(working_dir: String) -> Result<GitStatus, String> {
+    // Check if it's a git repo
+    let is_repo = run_git_command(&working_dir, &["rev-parse", "--git-dir"]).is_ok();
+
+    if !is_repo {
+        return Ok(GitStatus {
+            is_repo: false,
+            branch: None,
+            upstream: None,
+            ahead: 0,
+            behind: 0,
+            staged: vec![],
+            unstaged: vec![],
+            untracked: vec![],
+        });
+    }
+
+    // Get current branch
+    let branch = run_git_command(&working_dir, &["rev-parse", "--abbrev-ref", "HEAD"])
+        .ok()
+        .map(|s| s.trim().to_string());
+
+    // Get upstream branch
+    let upstream = run_git_command(
+        &working_dir,
+        &["rev-parse", "--abbrev-ref", "--symbolic-full-name", "@{u}"],
+    )
+    .ok()
+    .map(|s| s.trim().to_string());
+
+    // Get ahead/behind counts
+    let (ahead, behind) = if upstream.is_some() {
+        let rev_list =
+            run_git_command(&working_dir, &["rev-list", "--left-right", "--count", "@{u}...HEAD"])
+                .unwrap_or_default();
+        let parts: Vec<&str> = rev_list.trim().split('\t').collect();
+        if parts.len() == 2 {
+            (
+                parts[1].parse().unwrap_or(0),
+                parts[0].parse().unwrap_or(0),
+            )
+        } else {
+            (0, 0)
+        }
+    } else {
+        (0, 0)
+    };
+
+    // Get status with porcelain format
+    let status_output =
+        run_git_command(&working_dir, &["status", "--porcelain=v1"]).unwrap_or_default();
+
+    let mut staged = vec![];
+    let mut unstaged = vec![];
+    let mut untracked = vec![];
+
+    for line in status_output.lines() {
+        if line.len() < 3 {
+            continue;
+        }
+
+        let index_status = line.chars().next().unwrap_or(' ');
+        let worktree_status = line.chars().nth(1).unwrap_or(' ');
+        let path = line[3..].to_string();
+
+        // Untracked files
+        if index_status == '?' && worktree_status == '?' {
+            untracked.push(path);
+            continue;
+        }
+
+        // Staged changes (index status)
+        if index_status != ' ' && index_status != '?' {
+            staged.push(GitFileChange {
+                path: path.clone(),
+                status: match index_status {
+                    'M' => "modified".to_string(),
+                    'A' => "added".to_string(),
+                    'D' => "deleted".to_string(),
+                    'R' => "renamed".to_string(),
+                    'C' => "copied".to_string(),
+                    _ => "unknown".to_string(),
+                },
+            });
+        }
+
+        // Unstaged changes (worktree status)
+        if worktree_status != ' ' && worktree_status != '?' {
+            unstaged.push(GitFileChange {
+                path,
+                status: match worktree_status {
+                    'M' => "modified".to_string(),
+                    'D' => "deleted".to_string(),
+                    _ => "unknown".to_string(),
+                },
+            });
+        }
+    }
+
+    Ok(GitStatus {
+        is_repo: true,
+        branch,
+        upstream,
+        ahead,
+        behind,
+        staged,
+        unstaged,
+        untracked,
+    })
+}
+
+#[tauri::command]
+pub fn git_diff(working_dir: String, file_path: Option<String>, staged: bool) -> Result<String, String> {
+    let mut args = vec!["diff"];
+
+    if staged {
+        args.push("--cached");
+    }
+
+    if let Some(ref path) = file_path {
+        args.push("--");
+        args.push(path);
+    }
+
+    run_git_command(&working_dir, &args)
+}
+
+#[tauri::command]
+pub fn git_branches(working_dir: String) -> Result<Vec<GitBranch>, String> {
+    let output = run_git_command(&working_dir, &["branch", "-a", "--format=%(refname:short)\t%(HEAD)"])?;
+
+    let branches: Vec<GitBranch> = output
+        .lines()
+        .filter_map(|line| {
+            let parts: Vec<&str> = line.split('\t').collect();
+            if parts.is_empty() {
+                return None;
+            }
+
+            let name = parts[0].to_string();
+            let is_current = parts.get(1).map(|s| *s == "*").unwrap_or(false);
+            let is_remote = name.starts_with("remotes/") || name.starts_with("origin/");
+
+            Some(GitBranch {
+                name,
+                is_current,
+                is_remote,
+            })
+        })
+        .collect();
+
+    Ok(branches)
+}
+
+#[tauri::command]
+pub fn git_checkout(working_dir: String, branch: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["checkout", &branch])
+}
+
+#[tauri::command]
+pub fn git_stage(working_dir: String, file_path: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["add", &file_path])
+}
+
+#[tauri::command]
+pub fn git_unstage(working_dir: String, file_path: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["restore", "--staged", &file_path])
+}
+
+#[tauri::command]
+pub fn git_stage_all(working_dir: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["add", "-A"])
+}
+
+#[tauri::command]
+pub fn git_commit(working_dir: String, message: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["commit", "-m", &message])
+}
+
+#[tauri::command]
+pub fn git_push(working_dir: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["push"])
+}
+
+#[tauri::command]
+pub fn git_pull(working_dir: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["pull"])
+}
+
+#[tauri::command]
+pub fn git_fetch(working_dir: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["fetch", "--all"])
+}
+
+#[tauri::command]
+pub fn git_log(working_dir: String, limit: Option<u32>) -> Result<Vec<GitLogEntry>, String> {
+    let limit_str = limit.unwrap_or(10).to_string();
+    let output = run_git_command(
+        &working_dir,
+        &[
+            "log",
+            &format!("-{}", limit_str),
+            "--pretty=format:%H\t%h\t%an\t%ar\t%s",
+        ],
+    )?;
+
+    let entries: Vec<GitLogEntry> = output
+        .lines()
+        .filter_map(|line| {
+            let parts: Vec<&str> = line.split('\t').collect();
+            if parts.len() < 5 {
+                return None;
+            }
+
+            Some(GitLogEntry {
+                hash: parts[0].to_string(),
+                short_hash: parts[1].to_string(),
+                author: parts[2].to_string(),
+                date: parts[3].to_string(),
+                message: parts[4..].join("\t"),
+            })
+        })
+        .collect();
+
+    Ok(entries)
+}
+
+#[tauri::command]
+pub fn git_discard(working_dir: String, file_path: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["checkout", "--", &file_path])
+}
+
+#[tauri::command]
+pub fn git_create_branch(working_dir: String, branch_name: String) -> Result<String, String> {
+    run_git_command(&working_dir, &["checkout", "-b", &branch_name])
+}

src-tauri/src/lib.rs

@@ -2,6 +2,7 @@ mod achievements;
 mod bridge_manager;
 mod commands;
 mod config;
+mod git;
 mod notifications;
 mod sessions;
 mod snippets;
@@ -17,6 +18,7 @@ mod wsl_notifications;
 use bridge_manager::create_shared_bridge_manager;
 use commands::load_saved_achievements;
 use commands::*;
+use git::*;
 use notifications::*;
 use sessions::*;
 use snippets::*;
@@ -118,6 +120,20 @@ pub fn run() {
             delete_snippet,
             get_snippet_categories,
             reset_default_snippets,
+            git_status,
+            git_diff,
+            git_branches,
+            git_checkout,
+            git_stage,
+            git_unstage,
+            git_stage_all,
+            git_commit,
+            git_push,
+            git_pull,
+            git_fetch,
+            git_log,
+            git_discard,
+            git_create_branch,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");

src/lib/components/StatusBar.svelte

@@ -20,6 +20,7 @@
   import KeyboardShortcutsModal from "./KeyboardShortcutsModal.svelte";
   import { achievementProgress } from "$lib/stores/achievements";
   import SessionHistoryPanel from "./SessionHistoryPanel.svelte";
+  import GitPanel from "./GitPanel.svelte";
 
   const DISCORD_URL = "https://chat.nhcarrigan.com";
   const DONATE_URL = "https://donate.nhcarrigan.com";
@@ -35,6 +36,7 @@
   let showHelp = $state(false);
   let showKeyboardShortcuts = $state(false);
   let showSessionHistory = $state(false);
+  let showGitPanel = $state(false);
   const progress = $derived($achievementProgress);
   let currentConfig: HikariConfig = $state({
     model: null,
@@ -233,6 +235,20 @@
         />
       </svg>
     </button>
+    <button
+      onclick={() => (showGitPanel = true)}
+      class="p-1 text-gray-500 hover:text-[var(--accent-primary)] transition-colors"
+      title="Git Panel"
+    >
+      <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+        <path
+          stroke-linecap="round"
+          stroke-linejoin="round"
+          stroke-width="2"
+          d="M13.828 10.172a4 4 0 00-5.656 0l-4 4a4 4 0 105.656 5.656l1.102-1.101m-.758-4.899a4 4 0 005.656 0l4-4a4 4 0 00-5.656-5.656l-1.1 1.1"
+        />
+      </svg>
+    </button>
     <button
       onclick={() => (showStats = !showStats)}
       class="p-1 text-gray-500 hover:text-[var(--accent-primary)] transition-colors {showStats
@@ -391,3 +407,7 @@
 {#if showSessionHistory}
   <SessionHistoryPanel onClose={() => (showSessionHistory = false)} />
 {/if}
+
+{#if showGitPanel}
+  <GitPanel isOpen={showGitPanel} onClose={() => (showGitPanel = false)} />
+{/if}