feat: add e2e tests for likes and fix like_count propagation in DTO mapping

- Write 3 e2e tests (TC-E2E-106-108): like/unlike flow, multi-user like, guest redirect
- Add get_like_count() and click_like() to PostDetailPage object
- Fix _map_to_dto in 5 use cases (create, get, list, publish, update) to include like_count
- Fix pre-existing mypy issues in page object (evaluate returns Any)
- Update FEATURE_LIKES.md with verified E2E status

tests/e2e/pages/__init__.py

@@ -107,7 +107,7 @@ class HomePage(BasePage):
         tag = self.page.locator('[data-testid="pagination-next"]').evaluate(
             "el => el.tagName.toLowerCase()"
         )
-        return tag == "a"
+        return bool(tag == "a")
 
     def can_go_prev(self) -> bool:
         """Check if the previous page link is enabled.
@@ -118,7 +118,7 @@ class HomePage(BasePage):
         tag = self.page.locator('[data-testid="pagination-prev"]').evaluate(
             "el => el.tagName.toLowerCase()"
         )
-        return tag == "a"
+        return bool(tag == "a")
 
     def go_to_next_page(self) -> None:
         """Click the next page pagination link."""
@@ -208,6 +208,7 @@ class PostDetailPage(BasePage):
         self._content = SmartLocator.by_testid("post-detail-content")
         self._edit_btn = SmartLocator.by_testid("btn-edit-post")
         self._delete_btn = SmartLocator.by_testid("btn-delete-post")
+        self._like_button = SmartLocator.by_testid("like-button")
 
     @property
     def url(self) -> str:
@@ -275,3 +276,16 @@ class PostDetailPage(BasePage):
         """Click the delete button and accept the confirmation dialog."""
         self.page.on("dialog", lambda dialog: dialog.accept())
         self._delete_btn.click(self.page)
+
+    def get_like_count(self) -> int:
+        """Get the current like count from the detail page.
+
+        Returns:
+            Current like count as integer.
+        """
+        text = self.page.locator("#like-count").text_content()
+        return int(text.strip()) if text else 0
+
+    def click_like(self) -> None:
+        """Click the like/unlike button to toggle the like state."""
+        self._like_button.click(self.page)