Add GSP links field and link inspection

examples/lottery/README.md

@@ -25,6 +25,7 @@ page.lottery.main
 .\bin\gsp.exe validate --root examples\lottery
 .\bin\gsp.exe flatten page.lottery.main --root examples\lottery --depth -1
 .\bin\gsp.exe pack page.lottery.main --root examples\lottery --for implement --format md
+.\bin\gsp.exe links page.lottery.main --root examples\lottery --format md
 .\bin\gsp.exe impact feedback.positive --root examples\lottery --format md
 .\bin\gsp.exe message validate messages\implement-page.gspmsg --root examples\lottery
 .\bin\gsp.exe graph page.lottery.main --root examples\lottery --format mermaid

examples/lottery/assets/ui/button_primary.txt

@@ -0,0 +1 @@
+Primary button visual reference placeholder.

examples/lottery/design/page.lottery.main.gsp

@@ -3,6 +3,10 @@ title: 抽奖页面
 type: page
 resolution: L3
 context: 抽奖页面，需要表达奖励期待、抽取行为和结果反馈。玩家应快速理解奖池价值、抽奖入口和结果反馈。
+links:
+  - path: assets/ui
+    role: reference
+  - https://example.com/lottery-reference
 with:
   - ui.button.reward_primary
   - feedback.positive

examples/lottery/design/ui.button.primary.gsp

@@ -3,3 +3,4 @@ title: 通用主按钮
 type: ui
 resolution: L3
 context: 通用主按钮，用于明确、正向、优先级最高的玩家操作。
+links: assets/ui/button_primary.txt