Add Rust/C# AI rules and update quickstarts

crates/cli/build.rs

@@ -58,6 +58,8 @@ fn get_manifest_dir() -> PathBuf {
 //                            templates list at templates/templates-list.json
 //   * `get_ai_rules_base` - returns base AI rules for all languages
 //   * `get_ai_rules_typescript` - returns TypeScript-specific AI rules
+//   * `get_ai_rules_rust` - returns Rust-specific AI rules
+//   * `get_ai_rules_csharp` - returns C#-specific AI rules
 fn generate_template_files() {
     let manifest_dir = get_manifest_dir();
     let repo_root = get_repo_root();
@@ -140,6 +142,34 @@ fn generate_template_files() {
         panic!("Could not find \"docs/static/ai-rules/spacetimedb-typescript.mdc\" file.");
     }
 
+    // Rust-specific rules
+    let rust_rules_path = ai_rules_dir.join("spacetimedb-rust.mdc");
+    if rust_rules_path.exists() {
+        generated_code.push_str("pub fn get_ai_rules_rust() -> &'static str {\n");
+        generated_code.push_str(&format!(
+            "    include_str!(\"{}\")\n",
+            rust_rules_path.to_str().unwrap().replace('\\', "\\\\")
+        ));
+        generated_code.push_str("}\n\n");
+        println!("cargo:rerun-if-changed={}", rust_rules_path.display());
+    } else {
+        panic!("Could not find \"docs/static/ai-rules/spacetimedb-rust.mdc\" file.");
+    }
+
+    // C#-specific rules
+    let csharp_rules_path = ai_rules_dir.join("spacetimedb-csharp.mdc");
+    if csharp_rules_path.exists() {
+        generated_code.push_str("pub fn get_ai_rules_csharp() -> &'static str {\n");
+        generated_code.push_str(&format!(
+            "    include_str!(\"{}\")\n",
+            csharp_rules_path.to_str().unwrap().replace('\\', "\\\\")
+        ));
+        generated_code.push_str("}\n\n");
+        println!("cargo:rerun-if-changed={}", csharp_rules_path.display());
+    } else {
+        panic!("Could not find \"docs/static/ai-rules/spacetimedb-csharp.mdc\" file.");
+    }
+
     // Expose workspace metadata so `spacetime init` can rewrite template manifests without hardcoding versions.
     generated_code.push_str("pub fn get_workspace_edition() -> &'static str {\n");
     generated_code.push_str(&format!("    \"{}\"\n", workspace_edition.escape_default()));

crates/cli/src/subcommands/init.rs

@@ -1667,15 +1667,22 @@ fn set_dependency_version(item: &mut Item, version: &str, remove_path: bool) {
 /// Writes rules to:
 /// - .cursor/rules/ (Cursor)
 /// - CLAUDE.md (Claude Code)
+/// - AGENTS.md (Opencode)
 /// - .windsurfrules (Windsurf)
 /// - .github/copilot-instructions.md (VS Code Copilot)
 fn install_ai_rules(config: &TemplateConfig, project_path: &Path) -> anyhow::Result<()> {
     let base_rules = embedded::get_ai_rules_base();
     let ts_rules = embedded::get_ai_rules_typescript();
+    let rust_rules = embedded::get_ai_rules_rust();
+    let csharp_rules = embedded::get_ai_rules_csharp();
 
-    // Check if TypeScript is used in either server or client
+    // Check which languages are used in server or client
     let uses_typescript = config.server_lang == Some(ServerLanguage::TypeScript)
         || config.client_lang == Some(ClientLanguage::TypeScript);
+    let uses_rust =
+        config.server_lang == Some(ServerLanguage::Rust) || config.client_lang == Some(ClientLanguage::Rust);
+    let uses_csharp =
+        config.server_lang == Some(ServerLanguage::Csharp) || config.client_lang == Some(ClientLanguage::Csharp);
 
     // 1. Cursor: .cursor/rules/ directory with separate files
     let cursor_dir = project_path.join(".cursor/rules");
@@ -1684,24 +1691,44 @@ fn install_ai_rules(config: &TemplateConfig, project_path: &Path) -> anyhow::Res
     if uses_typescript {
         fs::write(cursor_dir.join("spacetimedb-typescript.mdc"), ts_rules)?;
     }
+    if uses_rust {
+        fs::write(cursor_dir.join("spacetimedb-rust.mdc"), rust_rules)?;
+    }
+    if uses_csharp {
+        fs::write(cursor_dir.join("spacetimedb-csharp.mdc"), csharp_rules)?;
+    }
 
     // Build combined content for single-file AI assistants
     // Strip the YAML frontmatter from the .mdc files for non-Cursor tools
     let base_content = strip_mdc_frontmatter(base_rules);
-    let combined_content = if uses_typescript {
+    let mut combined_content = base_content.to_string();
+
+    if uses_typescript {
         let ts_content = strip_mdc_frontmatter(ts_rules);
-        format!("{}\n\n{}", base_content, ts_content)
-    } else {
-        base_content.to_string()
-    };
+        combined_content.push_str("\n\n");
+        combined_content.push_str(ts_content);
+    }
+    if uses_rust {
+        let rust_content = strip_mdc_frontmatter(rust_rules);
+        combined_content.push_str("\n\n");
+        combined_content.push_str(rust_content);
+    }
+    if uses_csharp {
+        let csharp_content = strip_mdc_frontmatter(csharp_rules);
+        combined_content.push_str("\n\n");
+        combined_content.push_str(csharp_content);
+    }
 
     // 2. Claude Code: CLAUDE.md
     fs::write(project_path.join("CLAUDE.md"), &combined_content)?;
 
-    // 3. Windsurf: .windsurfrules
+    // 3. Opencode: AGENTS.md
+    fs::write(project_path.join("AGENTS.md"), &combined_content)?;
+
+    // 4. Windsurf: .windsurfrules
     fs::write(project_path.join(".windsurfrules"), &combined_content)?;
 
-    // 4. VS Code Copilot: .github/copilot-instructions.md
+    // 5. VS Code Copilot: .github/copilot-instructions.md
     let github_dir = project_path.join(".github");
     fs::create_dir_all(&github_dir)?;
     fs::write(github_dir.join("copilot-instructions.md"), &combined_content)?;

docs/docs/00100-intro/00100-getting-started/00400-key-architecture.md

@@ -47,7 +47,7 @@ const players = table(
 <TabItem value="csharp" label="C#">
 
 ```csharp
-[SpacetimeDB.Table(Name = "players", Public = true)]
+[SpacetimeDB.Table(Name = "Player", Public = true)]
 public partial struct Player
 {
     [SpacetimeDB.PrimaryKey]

docs/docs/00100-intro/00200-quickstarts/00100-react.md

@@ -29,7 +29,7 @@ Get a SpacetimeDB React app running in under 5 minutes.
     </StepText>
     <StepCode>
 ```bash
-spacetime dev --template basic-react my-spacetime-app
+spacetime dev --template basic-react
 ```
     </StepCode>
   </Step>

docs/docs/00100-intro/00200-quickstarts/00600-c-sharp.md

@@ -68,7 +68,7 @@ my-spacetime-app/
 
   <Step title="Understand tables and reducers">
     <StepText>
-      Open `spacetimedb/Lib.cs` to see the module code. The template includes a `person` table and two reducers: `add` to insert a person, and `say_hello` to greet everyone.
+      Open `spacetimedb/Lib.cs` to see the module code. The template includes a `Person` table and two reducers: `Add` to insert a person, and `SayHello` to greet everyone.
 
       Tables store your data. Reducers are functions that modify data — they're the only way to write to the database.
     </StepText>
@@ -78,7 +78,7 @@ using SpacetimeDB;
 
 public static partial class Module
 {
-    [SpacetimeDB.Table(Name = "person", Public = true)]
+    [SpacetimeDB.Table(Name = "Person", Public = true)]
     public partial struct Person
     {
         public string Name;
@@ -114,7 +114,7 @@ public static partial class Module
 spacetime call my-spacetime-app Add Alice
 
 # Query the person table
-spacetime sql my-spacetime-app "SELECT * FROM person"
+spacetime sql my-spacetime-app "SELECT * FROM Person"
  name
 ---------
  "Alice"

docs/docs/00200-core-concepts/00200-functions/00300-reducers/00400-reducer-context.md

@@ -248,7 +248,7 @@ using SpacetimeDB;
 
 public static partial class Module
 {
-    [SpacetimeDB.Table(Name = "scheduled_task", Scheduled = nameof(SendReminder))]
+    [SpacetimeDB.Table(Name = "ScheduledTask", Scheduled = nameof(SendReminder))]
     public partial struct ScheduledTask
     {
         [SpacetimeDB.PrimaryKey]

docs/docs/00200-core-concepts/00200-functions/00300-reducers/00500-lifecycle.md

@@ -40,9 +40,9 @@ public static void Init(ReducerContext ctx)
     Log.Info("Database initializing...");
 
     // Set up default data
-    if (ctx.Db.settings.Count == 0)
+    if (ctx.Db.Settings.Count == 0)
     {
-        ctx.Db.settings.Insert(new Settings
+        ctx.Db.Settings.Insert(new Settings
         {
             Key = "welcome_message",
             Value = "Hello, SpacetimeDB!"
@@ -116,7 +116,7 @@ public static void OnConnect(ReducerContext ctx)
     var connId = ctx.ConnectionId!.Value;
 
     // Initialize client session
-    ctx.Db.sessions.Insert(new Session
+    ctx.Db.Session.Insert(new Session
     {
         ConnectionId = connId,
         Identity = ctx.Sender,
@@ -188,7 +188,7 @@ public static void OnDisconnect(ReducerContext ctx)
     var connId = ctx.ConnectionId!.Value;
 
     // Clean up client session
-    ctx.Db.sessions.ConnectionId.Delete(connId);
+    ctx.Db.Session.ConnectionId.Delete(connId);
 }
 ```
 

docs/docs/00200-core-concepts/00200-functions/00300-reducers/00600-error-handling.md

@@ -61,7 +61,7 @@ Throw an exception:
 [SpacetimeDB.Reducer]
 public static void TransferCredits(ReducerContext ctx, ulong toUser, uint amount)
 {
-    var fromUser = ctx.Db.users.Id.Find(ctx.Sender);
+    var fromUser = ctx.Db.User.Id.Find(ctx.Sender);
     if (fromUser == null)
     {
         throw new InvalidOperationException("User not found");