Merge PR #204: fix Telegram italic regex newline bug

Authored by 0xbyt4.

The italic regex [^*]+ matched across newlines, corrupting bullet lists
using * markers (e.g. '* Item one\n* Item two' became italic garbage).
Fixed by adding \n to the negated character class: [^*\n]+.

gateway/platforms/telegram.py

@@ -406,8 +406,10 @@ class TelegramAdapter(BasePlatformAdapter):
         )
 
         # 6) Convert italic: *text* (single asterisk) → _text_ (MarkdownV2 italic)
+        #    [^*\n]+ prevents matching across newlines (which would corrupt
+        #    bullet lists using * markers and multi-line content).
         text = re.sub(
-            r'\*([^*]+)\*',
+            r'\*([^*\n]+)\*',
             lambda m: _ph(f'_{_escape_mdv2(m.group(1))}_'),
             text,
         )