docs: add plugin core and Telegram/OpenClaw adapter skeleton / 補 reply-end-controls 核心與 Telegram/OpenClaw 設計骨架

telegram/reply-decorator.md

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+# Telegram Reply Decorator
+
+## Responsibility
+
+Append inline keyboard controls to every assistant reply sent to Telegram.
+
+## Required controls
+
+- `A. 繼續`
+- `B. 就這樣吧，不需要額外處理`
+
+## Output shape
+
+The Telegram outbound payload should include:
+
+- normal reply text
+- inline keyboard markup
+
+## V1 behavior
+
+- every assistant reply gets the two buttons
+- no conditional rendering in V1