feat: introduce UX Extension and Base Folder Strategy

docs/cli/custom-commands.md

@@ -30,9 +30,7 @@ separator (`/` or `\`) being converted to a colon (`:`).
 - A file at `<project>/.gemini/commands/git/commit.toml` becomes the namespaced
   command `/git:commit`.
 
-<!-- prettier-ignore -->
-> [!TIP]
-> After creating or modifying `.toml` command files, run
+> [!TIP] After creating or modifying `.toml` command files, run
 > `/commands reload` to pick up your changes without restarting the CLI.
 
 ## TOML file format (v1)
@@ -179,10 +177,10 @@ ensure that only intended commands can be run.
     automatically shell-escaped (see
     [Context-Aware Injection](#1-context-aware-injection-with-args) above).
 3.  **Robust parsing:** The parser correctly handles complex shell commands that
-    include nested braces, such as JSON payloads. The content inside `!{...}`
-    must have balanced braces (`{` and `}`). If you need to execute a command
-    containing unbalanced braces, consider wrapping it in an external script
-    file and calling the script within the `!{...}` block.
+    include nested braces, such as JSON payloads. **Note:** The content inside
+    `!{...}` must have balanced braces (`{` and `}`). If you need to execute a
+    command containing unbalanced braces, consider wrapping it in an external
+    script file and calling the script within the `!{...}` block.
 4.  **Security check and confirmation:** The CLI performs a security check on
     the final, resolved command (after arguments are escaped and substituted). A
     dialog will appear showing the exact command(s) to be executed.