fix(desktop): tighter bar icon pad + case-insensitive rofi match

- Double-space pad on volume (esp. high), battery, keyboard layout glyphs
- rofi: matching=normal,fuzzy; case-smart off (ste finds Steam)
- Queue: unfree+calendar PASS; retest spacing + rofi search

V0: nix flake check --no-build green. V3: bar/rofi on session.

modules/home/rofi.nix

@@ -1159,19 +1159,18 @@ in
         # reserving `lines` (8) — so a 6-entry menu doesn't leave empty space,
         # while the app launcher still fills + scrolls past `lines`.
         fixed-num-lines = false;
-        # Search: case-insensitive fuzzy across every menu + the launcher, so
-        # "system" finds "System" and "fzr" finds "Firefox". `normal` sorting
-        # ranks by match distance so the closest match lands on top (the
-        # per-keystroke modules — calc/emoji — opt out per-invocation with
-        # -no-sort).
+        # Search: case-insensitive, substring first + fuzzy forgiveness.
+        # "ste" must find "Steam", "system" finds "System", "fzr" still
+        # reaches "Firefox". Comma list = match if ANY method hits (rofi 1.7+).
         #
-        # NOT `fzf`: rofi 2.0.0's fzf sorter mis-ranks with fuzzy matching —
-        # typing "steam" left ghostty selected on top instead of Steam
-        # (confirmed on hardware: `-sorting-method normal` and `-matching
-        # normal` both fixed it, `-no-sort` did not). Keep fuzzy matching for
-        # forgiveness; use the normal sorter to rank it (item 31).
-        matching = "fuzzy";
+        # History: fuzzy-only + fzf sorter mis-ranked (ghostty over Steam);
+        # fuzzy-only still failed short lowercase queries on hardware
+        # 2026-07-10 despite case-sensitive=false. normal covers the
+        # prefix/substring case; fuzzy stays for typo-tolerant hits.
+        # case-smart off so all-lowercase never flips to case-sensitive.
+        matching = "normal,fuzzy";
         case-sensitive = false;
+        case-smart = false;
         sort = true;
         sorting-method = "normal";
       };