feat: another wave of features (#61)

## Explanation

This PR bundles several user-facing improvements and feature additions for the v0.3.0 release, including quality-of-life improvements to the UI, new slash commands, better state persistence, and auto-update checking.

## Included Changes

- **Resizable chat input** with drag handle (#58 partial)
- **Arrow key navigation fix** - cursor keys now navigate text when user has typed input (#58)
- **Scroll position persistence** per conversation tab
- **/skill command** for invoking Claude Code skills (#57)
- **Stats persistence fix** - stats now persist across session changes, only reset on disconnect (#59)
- **Auto-update checker** on startup (#17)
- **Resizable character panel** with full-height sprites (#10)
- **Font size and zoom settings** with keyboard shortcuts (Ctrl++/Ctrl+-/Ctrl+0) (#19)

## Closes

Closes #10, #17, #19, #57, #58, #59

## Attestations

- [x] I have read and agree to the Code of Conduct
- [x] I have read and agree to the Community Guidelines
- [x] My contribution complies with the Contributor Covenant
- [x] I have run the linter and resolved any errors
- [x] My pull request uses an appropriate title, matching the conventional commit standards
- [x] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request
- [x] All new and existing tests pass locally with my changes
- [x] Code coverage remains at or above the configured threshold

## Documentation

N/A - Internal app features

## Versioning

Minor - My pull request introduces new non-breaking features.

---
✨ This PR was created with help from Hikari~ 🌸

Co-authored-by: Hikari <hikari@nhcarrigan.com>
Reviewed-on: #61
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src-tauri/src/achievements.rs

@@ -1,6 +1,6 @@
+use chrono::{DateTime, Datelike, Timelike, Utc};
 use serde::{Deserialize, Serialize};
 use std::collections::HashSet;
-use chrono::{DateTime, Utc, Timelike, Datelike};
 use tauri_plugin_store::StoreExt;
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
@@ -12,9 +12,9 @@ pub enum AchievementId {
     TokenMaster,     // 1,000,000 tokens
 
     // Code Generation
-    HelloWorld,      // First code block
-    CodeWizard,      // 100 code blocks
-    ThousandBlocks,  // 1,000 code blocks
+    HelloWorld,     // First code block
+    CodeWizard,     // 100 code blocks
+    ThousandBlocks, // 1,000 code blocks
 
     // File Operations
     FileManipulator, // 10 files edited
@@ -22,23 +22,23 @@ pub enum AchievementId {
 
     // Conversation milestones
     ConversationStarter, // 10 messages
-    ChattyKathy,     // 100 messages
-    Conversationalist, // 1,000 messages
+    ChattyKathy,         // 100 messages
+    Conversationalist,   // 1,000 messages
 
     // Tool usage
-    Toolsmith,       // 5 different tools
-    ToolMaster,      // 10 different tools
+    Toolsmith,  // 5 different tools
+    ToolMaster, // 10 different tools
 
     // Time-based achievements
-    EarlyBird,       // Started session 5-7 AM
-    NightOwl,        // Coding after midnight
-    AllNighter,      // Worked 2-5 AM
-    WeekendWarrior,  // Coding on weekend
+    EarlyBird,          // Started session 5-7 AM
+    NightOwl,           // Coding after midnight
+    AllNighter,         // Worked 2-5 AM
+    WeekendWarrior,     // Coding on weekend
     DedicatedDeveloper, // 30 days in a row
 
     // Search and exploration
-    Explorer,        // 50 searches
-    MasterSearcher,  // 500 searches
+    Explorer,       // 50 searches
+    MasterSearcher, // 500 searches
 
     // Session achievements
     QuickSession,    // Productive session < 5 min
@@ -47,36 +47,36 @@ pub enum AchievementId {
     MarathonSession, // 5+ hour session
 
     // Special achievements
-    FirstMessage,    // First message sent
-    FirstTool,       // First tool used
-    FirstCodeBlock,  // First code generated
-    FirstFileEdit,   // First file edit
-    Polyglot,        // 5+ languages in one session
-    SpeedCoder,      // 10 code blocks in 10 minutes
+    FirstMessage,      // First message sent
+    FirstTool,         // First tool used
+    FirstCodeBlock,    // First code generated
+    FirstFileEdit,     // First file edit
+    Polyglot,          // 5+ languages in one session
+    SpeedCoder,        // 10 code blocks in 10 minutes
     ClaudeConnoisseur, // Used all Claude models
-    MarathonCoder,   // 10k tokens in one session
+    MarathonCoder,     // 10k tokens in one session
 
     // Relationship & Greetings
-    GoodMorning,     // Say "good morning"
-    GoodNight,       // Say "good night" or "goodnight"
-    ThankYou,        // Say "thank you" or "thanks"
-    LoveYou,         // Say "love you" or "ily"
+    GoodMorning, // Say "good morning"
+    GoodNight,   // Say "good night" or "goodnight"
+    ThankYou,    // Say "thank you" or "thanks"
+    LoveYou,     // Say "love you" or "ily"
 
     // Personality & Fun
-    EmojiUser,       // Use an emoji in a message
-    QuestionMaster,  // Use "?" in 20 messages
-    CapsLock,        // Send a message in ALL CAPS
+    EmojiUser,         // Use an emoji in a message
+    QuestionMaster,    // Use "?" in 20 messages
+    CapsLock,          // Send a message in ALL CAPS
     PleaseAndThankYou, // Use "please" in messages
 
     // Git & Development
-    GitGuru,         // Use git commands 10 times
-    TestWriter,      // Create test files
-    Debugger,        // Fix bugs (messages with "fix", "bug", "error")
+    GitGuru,    // Use git commands 10 times
+    TestWriter, // Create test files
+    Debugger,   // Fix bugs (messages with "fix", "bug", "error")
 
     // Tool Mastery
-    BashMaster,      // Use Bash tool 50 times
-    FileExplorer,    // Use Read tool 100 times
-    SearchExpert,    // Use Grep tool 50 times
+    BashMaster,   // Use Bash tool 50 times
+    FileExplorer, // Use Read tool 100 times
+    SearchExpert, // Use Grep tool 50 times
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -509,15 +509,20 @@ pub fn check_message_achievements(
         newly_unlocked.push(AchievementId::GoodMorning);
     }
     if (message_lower.contains("good night") || message_lower.contains("goodnight"))
-        && progress.unlock(AchievementId::GoodNight) {
+        && progress.unlock(AchievementId::GoodNight)
+    {
         newly_unlocked.push(AchievementId::GoodNight);
     }
-    if (message_lower.contains("thank you") || message_lower.contains("thanks") || message_lower.contains("thx"))
-        && progress.unlock(AchievementId::ThankYou) {
+    if (message_lower.contains("thank you")
+        || message_lower.contains("thanks")
+        || message_lower.contains("thx"))
+        && progress.unlock(AchievementId::ThankYou)
+    {
         newly_unlocked.push(AchievementId::ThankYou);
     }
     if (message_lower.contains("love you") || message_lower.contains("ily"))
-        && progress.unlock(AchievementId::LoveYou) {
+        && progress.unlock(AchievementId::LoveYou)
+    {
         newly_unlocked.push(AchievementId::LoveYou);
     }
 
@@ -525,9 +530,11 @@ pub fn check_message_achievements(
     if message.chars().any(|c| c as u32 >= 0x1F300) && progress.unlock(AchievementId::EmojiUser) {
         newly_unlocked.push(AchievementId::EmojiUser);
     }
-    if message == message.to_uppercase() && message.len() > 5
+    if message == message.to_uppercase()
+        && message.len() > 5
         && message.chars().any(|c| c.is_alphabetic())
-        && progress.unlock(AchievementId::CapsLock) {
+        && progress.unlock(AchievementId::CapsLock)
+    {
         newly_unlocked.push(AchievementId::CapsLock);
     }
     if message_lower.contains("please") && progress.unlock(AchievementId::PleaseAndThankYou) {
@@ -535,8 +542,11 @@ pub fn check_message_achievements(
     }
 
     // Git & Development patterns in messages
-    if (message_lower.contains("fix") || message_lower.contains("bug") || message_lower.contains("error"))
-        && progress.unlock(AchievementId::Debugger) {
+    if (message_lower.contains("fix")
+        || message_lower.contains("bug")
+        || message_lower.contains("error"))
+        && progress.unlock(AchievementId::Debugger)
+    {
         newly_unlocked.push(AchievementId::Debugger);
     }
 
@@ -550,10 +560,12 @@ pub fn check_achievements(
 ) -> Vec<AchievementId> {
     let mut newly_unlocked = Vec::new();
 
-    println!("Checking achievements with stats: messages={}, tokens={}, code_blocks={}",
+    println!(
+        "Checking achievements with stats: messages={}, tokens={}, code_blocks={}",
         stats.messages_exchanged,
         stats.total_input_tokens + stats.total_output_tokens,
-        stats.code_blocks_generated);
+        stats.code_blocks_generated
+    );
     println!("Currently unlocked: {:?}", progress.unlocked);
 
     // Token milestones
@@ -617,7 +629,8 @@ pub fn check_achievements(
 
     // Search and exploration
     let search_tools = ["Glob", "Grep", "search", "Task"];
-    let search_count: u64 = search_tools.iter()
+    let search_count: u64 = search_tools
+        .iter()
         .filter_map(|tool| stats.tools_usage.get(*tool))
         .sum();
     if search_count >= 50 && progress.unlock(AchievementId::Explorer) {
@@ -629,7 +642,10 @@ pub fn check_achievements(
 
     // Session duration achievements
     let session_secs = stats.session_duration_seconds;
-    if session_secs < 300 && stats.session_messages_exchanged >= 5 && progress.unlock(AchievementId::QuickSession) {
+    if session_secs < 300
+        && stats.session_messages_exchanged >= 5
+        && progress.unlock(AchievementId::QuickSession)
+    {
         newly_unlocked.push(AchievementId::QuickSession);
     }
     if session_secs >= 1800 && progress.unlock(AchievementId::FocusedWork) {
@@ -716,7 +732,9 @@ pub fn check_achievements(
 
         // Weekend warrior
         use chrono::Weekday;
-        if (weekday == Weekday::Sat || weekday == Weekday::Sun) && progress.unlock(AchievementId::WeekendWarrior) {
+        if (weekday == Weekday::Sat || weekday == Weekday::Sun)
+            && progress.unlock(AchievementId::WeekendWarrior)
+        {
             newly_unlocked.push(AchievementId::WeekendWarrior);
         }
     }
@@ -733,16 +751,21 @@ pub struct AchievementUnlockedEvent {
 }
 
 // Save achievements to persistent store
-pub async fn save_achievements(app: &tauri::AppHandle, progress: &AchievementProgress) -> Result<(), String> {
-    let store = app.store("achievements.json")
-        .map_err(|e| e.to_string())?;
+pub async fn save_achievements(
+    app: &tauri::AppHandle,
+    progress: &AchievementProgress,
+) -> Result<(), String> {
+    let store = app.store("achievements.json").map_err(|e| e.to_string())?;
 
     // Create a serializable version with just the unlocked achievement IDs
     let unlocked_list: Vec<AchievementId> = progress.unlocked.iter().cloned().collect();
 
     println!("Saving achievements: {:?}", unlocked_list);
 
-    store.set("unlocked", serde_json::to_value(unlocked_list).map_err(|e| e.to_string())?);
+    store.set(
+        "unlocked",
+        serde_json::to_value(unlocked_list).map_err(|e| e.to_string())?,
+    );
     store.save().map_err(|e| e.to_string())?;
 
     println!("Achievements saved successfully");
@@ -766,7 +789,9 @@ pub async fn load_achievements(app: &tauri::AppHandle) -> AchievementProgress {
     // Get unlocked achievements
     if let Some(unlocked_value) = store.get("unlocked") {
         println!("Found unlocked value in store: {:?}", unlocked_value);
-        if let Ok(unlocked_list) = serde_json::from_value::<Vec<AchievementId>>(unlocked_value.clone()) {
+        if let Ok(unlocked_list) =
+            serde_json::from_value::<Vec<AchievementId>>(unlocked_value.clone())
+        {
             println!("Loaded {} achievements", unlocked_list.len());
             for achievement_id in unlocked_list {
                 progress.unlocked.insert(achievement_id);
@@ -805,4 +830,4 @@ mod tests {
         let newly = progress.take_newly_unlocked();
         assert!(newly.is_empty());
     }
-}
+}