CTA pre-buff: poll for Battle Command instead of racing a fixed wait

Every single game logged "Failed to find Battle Command, swapping
weapons again" — 1182 times in the last log alone, always on the
first attempt, always resolved by the very next loop iteration's
identical check with no extra wait in between. The skill icon just
takes a bit longer than the fixed 0.6-0.8s wait to render on this
system; the check was racing it every time.

Poll for up to 1.2s instead of a single check after a fixed wait.
Catches the skill as soon as it's actually visible rather than always
failing once first, and removes the latent risk of the fallback path
incorrectly swapping back to the main weapon if timing ever degraded
further.

src/char/i_char.py

@@ -329,10 +329,20 @@ class IChar:
                 break
             self._weapon_switch()
             keyboard.send(Config().char["battle_command"])
-            # Skill icon takes ~0.5s to update after the hotkey; checking too early
-            # fails every first pass and costs a full extra swap cycle per game.
-            wait(0.6, 0.8)
-            if skills.is_right_skill_selected(["BC", "BO"]):
+            # Skill icon takes anywhere from ~0.3s to ~0.9s to update after the
+            # hotkey. A single fixed-wait-then-check raced this and consistently
+            # logged a false "failed" (the very next loop pass would see the
+            # skill just fine, with no extra wait in between) — poll instead so
+            # we catch it the moment it renders, and only swap weapons again if
+            # it genuinely never shows up.
+            found = False
+            poll_start = time.time()
+            while time.time() - poll_start < 1.2:
+                if skills.is_right_skill_selected(["BC", "BO"]):
+                    found = True
+                    break
+                wait(0.1, 0.15)
+            if found:
                 switch_success = True
                 break
             else: