report: one uniform dropdown for every agent comment

Comments looked different depending on the run: tool-using agents got a
collapsed <details> report while text-only replies got a bare one-line <sub>
footer. Every comment now gets the SAME dropdown — summary '🔧 N tool calls ·
in X · out Y · <cost>', body = the tool list (or '(no tool calls)') plus the
full token/cost breakdown.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitea/workflows/scripts/build-activity-log.sh

@@ -45,13 +45,12 @@ case "${MODEL:-}" in
 esac
 echo "usage: in=$IN_TOTAL out=$OUT cost=$COSTF (fresh=$INP cache_r=$CR cache_w=$CW reasoning=$RE); tools=$n"
 
+# ONE uniform format for every agent comment (with or without tool calls): a collapsed dropdown
+# whose summary carries the headline numbers, and whose body lists the tool calls (or notes none)
+# plus the full token/cost breakdown.
 {
-  if [ "$n" -gt 0 ]; then
-    printf '\n\n<details>\n<summary>🔧 %s tool calls · in %s · out %s · %s</summary>\n\n' "$n" "$IN_TOTAL" "$OUT" "$COSTF"
-    cat /tmp/tools.md
-    printf '\n\n<sub>tokens — input %s (fresh %s · cache %sw / %sr) · output %s · reasoning %s · **%s**</sub>\n</details>' \
-      "$IN_TOTAL" "$INP" "$CW" "$CR" "$OUT" "$RE" "$COSTF"
-  else
-    printf '\n\n<sub>💰 **%s** · in %s · out %s tokens (cache %sw / %sr)</sub>' "$COSTF" "$IN_TOTAL" "$OUT" "$CW" "$CR"
-  fi
+  printf '\n\n<details>\n<summary>🔧 %s tool calls · in %s · out %s · %s</summary>\n\n' "$n" "$IN_TOTAL" "$OUT" "$COSTF"
+  if [ "$n" -gt 0 ]; then cat /tmp/tools.md; else printf '_(no tool calls — text-only reply)_\n'; fi
+  printf '\n\n<sub>tokens — input %s (fresh %s · cache %sw / %sr) · output %s · reasoning %s · **%s**</sub>\n</details>' \
+    "$IN_TOTAL" "$INP" "$CW" "$CR" "$OUT" "$RE" "$COSTF"
 } > /tmp/activity_log.md