fix(banner): equalize and trim padding 15% on both ends

.console/log.md

@@ -3,6 +3,8 @@
 _Chronological continuity log. Decisions, stop points, what changed and why._
 _Not a task tracker — that's backlog.md. Keep entries concise and dated._
 
+- Banner padding equalized and trimmed (2026-05-08, on fix/banner-equal-padding): Equalized lp and g to the same value, then trimmed 15% — both now `max(4, (w-1)*17//80)` (= (w-1)//4 × 0.85). At 120 cols: 25 spaces each side.
+
 - Banner padding unified at half original (2026-05-08, on fix/banner-half-padding): Both single and multi-banner now use lp=(w-1)//4 and g=max(6,(w-1)//6) — half the original multi-banner values. Removes the single/multi branch entirely.
 
 - Banner single-loop padding at half size (2026-05-08, on fix/banner-single-padding): Single-banner re-stream gets lp=(w-1)//4 and g=max(6,(w-1)//6) — half the original values — so there's a visible breath between loops. Multi-banner keeps lp="" and g="    " (4 spaces); the crossfade coloring is the boundary signal there.

src/operator_console/watcher_status_pane.py

@@ -1208,9 +1208,8 @@ def _banner_unit_len(message: str, banner_count: int, banner_index: int, w: int)
     """
     counter = f"  [{banner_index + 1}/{banner_count}]" if banner_count > 1 else ""
     payload = f" {message}{counter} "
-    lp = " " * ((w - 1) // 4)
-    g  = " " * max(6, (w - 1) // 6)
-    return len(lp) + len(payload) + len(g)
+    pad = max(4, (w - 1) * 17 // 80)
+    return pad + len(payload) + pad
 
 
 def _wrap_hints(chunks: tuple[str, ...], width: int) -> list[str]:
@@ -1280,9 +1279,8 @@ def _build_unit(b_severity: str, b_message: str, b_idx: int) -> tuple[str, str]:
         """Return (full_unit_text, severity) for one banner condition."""
         ctr = f"  [{b_idx + 1}/{banner_count}]" if banner_count > 1 else ""
         payload = f" {b_message}{ctr} "
-        lp = " " * ((w - 1) // 4)
-        g  = " " * max(6, (w - 1) // 6)
-        return lp + payload + g, b_severity
+        pad = " " * max(4, (w - 1) * 17 // 80)
+        return pad + payload + pad, b_severity
 
     severity, message = current_banner
     cur_unit, cur_sev = _build_unit(severity, message, banner_index)