refactor(meta): label categories with one hieroglyph

A deploy job name repeats the category path on every row of the matrix. One Egyptian hieroglyph costs four UTF-8 bytes where the two Chinese characters it replaces cost six. Unicode names each sign by its Gardiner code, so the opaque value stays identifiable without a comment per entry.

A label has to stay one codepoint: a sign written with a variation selector costs seven bytes and is worse than what it replaced. tests/integration/meta/categories/test_glyph.py enforces that.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

tests/unit/python/utils/i18n/test_extract.py

@@ -35,7 +35,7 @@ class TestCoreMessages(unittest.TestCase):
                 roles:
                   web:
                     title: Web
-                    hanzi: 网络
+                    glyph: 𓏴
                     app:
                       title: Applications
                       description: Apps for users

tests/unit/python/utils/roles/test_display.py

@@ -28,9 +28,7 @@ class TestRoleDisplayName(unittest.TestCase):
             ),
             self.codec.encode(long_heading),
         )
-        self.assertEqual(
-            "系统控制告警·compose", self.codec.encode("sys-ctl-alm-compose")
-        )
+        self.assertEqual("𓉐𓌀𓌉·compose", self.codec.encode("sys-ctl-alm-compose"))
 
     def test_the_id_section_drops_what_the_categories_already_say(self):
         self.assertEqual("nextcloud", self.codec.id_fragment(APP))