Update/Add comprehensive tinystruct patterns reference documentation (#1895)

* feat: update tinystruct-patterns skill with comprehensive expert knowledge

* Update skills/tinystruct-patterns/SKILL.md

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* Update skills/tinystruct-patterns/SKILL.md

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* Update skills/tinystruct-patterns/references/database.md

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* Update testing.md

* Update database.md

---------

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skills/tinystruct-patterns/references/architecture.md

@@ -2,7 +2,7 @@
 
 ## When to Use
 
-Choose **tinystruct** when you need a lightweight, high-performance Java framework that treats CLI and HTTP as equal citizens. It is ideal for building microservices, command-line utilities, and data-driven applications where a small footprint and zero-dependency JSON handling are required. Use it when you want to write logic once and expose it via both a terminal and a web server without modification.
+Choose **tinystruct** when you need a lightweight, high-performance Java framework that treats CLI and HTTP as equal citizens. Ideal for microservices, CLI utilities, and data-driven applications with a small footprint and zero-dependency JSON handling.
 
 ## How It Works
 
@@ -20,7 +20,7 @@ The framework operates on a singleton `ActionRegistry` that maps URL patterns (o
 | `Action` | Wraps a `MethodHandle` + regex pattern + priority + `Mode` for dispatch. |
 | `Context` | Per-request state store. Access via `getContext()`. Holds CLI args and HTTP request/response. |
 | `Dispatcher` | CLI entry point (`bin/dispatcher`). Reads `--import` to load applications. |
-| `HttpServer` | Built-in Netty-based HTTP server. Start with `bin/dispatcher start --import org.tinystruct.system.HttpServer`. |
+| `HttpServer` | Built-in HTTP server. Start with `bin/dispatcher start --import org.tinystruct.system.HttpServer`. |
 
 ### Package Map
 
@@ -40,13 +40,23 @@ org.tinystruct/
 │   ├── HttpServer.java           ← built-in HTTP server
 │   ├── EventDispatcher.java      ← event bus
 │   └── Settings.java             ← reads application.properties
-├── data/component/Builder.java   ← JSON serialization (use instead of Gson/Jackson)
-└── http/                         ← Request, Response, Constants
+├── data/
+│   ├── component/Builder.java    ← JSON object (use instead of Gson/Jackson)
+│   ├── component/Builders.java   ← JSON array
+│   ├── component/AbstractData.java ← base POJO for DB persistence
+│   ├── component/Condition.java  ← fluent SQL query builder
+│   ├── component/FieldType.java  ← SQL-to-Java type mappings
+│   ├── Mapping.java              ← reads .map.xml metadata
+│   ├── DatabaseOperator.java     ← low-level JDBC wrapper
+│   └── FileEntity.java           ← file upload representation
+├── http/                         ← Request, Response, Constants
+│   └── SSEPushManager.java       ← Server-Sent Events management
+└── net/                          ← URLRequest, HTTPHandler (outbound HTTP)
 ```
 
 ### Template Behavior and Dispatch Flow
 
-By default, the framework assumes a view template is required. If `templateRequired` is `true`, `toString()` looks for a `.view` file in `src/main/resources/themes/<ClassName>.view`. Use `getContext()` to manage state and `setVariable("name", value)` to pass data to templates, which use `[%name%]` for interpolation.
+By default, the framework assumes a view template is required. If `templateRequired` is `true`, `toString()` looks for a `.view` file in `src/main/resources/themes/<ClassName>.view`. Use `setVariable("name", value)` to pass data to templates, which use `{%name%}` for interpolation.
 
 ## Examples
 
@@ -55,6 +65,7 @@ By default, the framework assumes a view template is required. If `templateRequi
 @Override
 public void init() {
     this.setTemplateRequired(false); // Skip .view template lookup for data-only apps
+    // Do NOT call setAction() here — use @Action annotation instead
 }
 ```
 
@@ -68,6 +79,8 @@ public String hello() {
 **Execution via Dispatcher:**
 ```bash
 bin/dispatcher hello
+bin/dispatcher greet/James
+bin/dispatcher echo --words "Hello" --import com.example.HelloApp
 ```
 
 ### Configuration Access