fix(cli): copy uses OSC52 only in SSH/WSL (#16554)

Signed-off-by: assagman <ahmetsercansagman@gmail.com>

docs/cli/commands.md

@@ -73,6 +73,9 @@ Slash commands provide meta-level control over the CLI itself.
 - **`/copy`**
   - **Description:** Copies the last output produced by Gemini CLI to your
     clipboard, for easy sharing or reuse.
+  - **Behavior:**
+    - Local sessions use system clipboard tools (pbcopy/xclip/clip).
+    - Remote sessions (SSH/WSL) use OSC 52 and require terminal support.
   - **Note:** This command requires platform-specific clipboard tools to be
     installed.
     - On Linux, it requires `xclip` or `xsel`. You can typically install them