docs: update session management to use Request object

- Modified DEVELOPER_GUIDE.md and SKILL.md to demonstrate accessing the session via the Request object rather than getContext().getSession().

Author: m0ver

src/main/resources/archetype-resources/.agent/skills/tinystruct-dev/SKILL.md

@@ -201,15 +201,17 @@ String status = parsed.get("status").toString();
 ## Session Management (Web Mode)
 
 ```java
+import org.tinystruct.http.Request;
+
 @Action(value = "login", mode = Mode.HTTP_POST)
-public String login() {
-    getContext().getSession().setAttribute("userId", "42");
+public String login(Request<?, ?> request) {
+    request.getSession().setAttribute("userId", "42");
     return "Logged in";
 }
 
 @Action("profile")
-public String profile() {
-    Object userId = getContext().getSession().getAttribute("userId");
+public String profile(Request<?, ?> request) {
+    Object userId = request.getSession().getAttribute("userId");
     if (userId == null) return "Not logged in";
     return "User: " + userId;
 }

src/main/resources/archetype-resources/DEVELOPER_GUIDE.md

@@ -160,11 +160,13 @@ Tinystruct provides built-in support for various databases (H2, MySQL, SQLite, S
 2. **Usage**: Use the `generate` command to create POJOs and use the internal data layer to interact with the database.
 
 ### Session Management
-For web applications, session management is transparent. You can access session data via the `Context`:
+For web applications, session management is handled via the `Request` object. Include it as a parameter in your action method:
 
 ```java
-public String login() {
-    getContext().getSession().setAttribute("user", "James");
+import org.tinystruct.http.Request;
+
+public String login(Request<?, ?> request) {
+    request.getSession().setAttribute("user", "James");
     return "Logged in";
 }
 ```