Trim comments in always property tests and update s_always liveness golden

test_regress/t/t_prop_always.v

@@ -38,9 +38,6 @@ module t (
   // Bounded weak always over constant-true input.
   assert property (@(posedge clk) always [0:3] a_high) high_bounded_pass_q.push_back(cyc);
 
-  // Strong s_always[m:n] (including its end-of-simulation liveness) is covered
-  // by t_prop_s_always_liveness; this file stays a pure pass/fail suite.
-
   // Degenerate [0:0]: equivalent to immediate sample.
   assert property (@(posedge clk) always [0:0] a_high) high_degenerate_pass_q.push_back(cyc);
 

test_regress/t/t_prop_always_wide.v

@@ -22,9 +22,6 @@ module t (
   assert property (@(posedge clk) always[1: 33] (a_high && b_high && c_high))
     wide_pass_q.push_back(cyc);
 
-  // Strong wide s_always (and its end-of-simulation liveness) is covered by
-  // t_prop_s_always_liveness.
-
   always @(posedge clk) begin
     cyc <= cyc + 1;
     if (cyc == 49) begin

test_regress/t/t_prop_s_always_liveness.out

@@ -1,4 +1,4 @@
 *-* All Finished *-*
-[115] %Error: t_prop_s_always_liveness.v:28: Assertion failed in top.t
-%Error: t/t_prop_s_always_liveness.v:28: Verilog $stop
+[115] %Error: t_prop_s_always_liveness.v:25: Assertion failed in top.t
+%Error: t/t_prop_s_always_liveness.v:25: Verilog $stop
 Aborting...

test_regress/t/t_prop_s_always_liveness.v

@@ -20,19 +20,11 @@ module t (
   int low_s_fail_q[$];
   int low_w_fail_q[$];
 
-  // A new attempt starts every tick, so the last hi attempts still have an open
-  // [2:5] window when the trace ends. Even though a_high is constantly true,
-  // those unfinished attempts report a liveness failure; Verilator OR-reduces
-  // them into one end-of-simulation error. (Questa 2022.3: 6 earlier attempts
-  // complete, the 5 youngest fire the strong else at $finish.)
+  // The youngest [2:5] windows are still open at $finish, so strong s_always
+  // reports a liveness failure even with a_high always 1; weak always does not.
   assert property (@(posedge clk) s_always [2:5] a_high);
-  // Weak always makes no end-of-trace obligation: silent.
   assert property (@(posedge clk) always [2:5] a_high);
 
-  // Constant-false fails at the first window tick: a safety violation reported
-  // identically by weak and strong (the strong-only liveness affects just the
-  // still-open tail). Verilator counts 9 each at cyc 10. (Questa reads 8 -- a
-  // same-timestep else-vs-read ordering difference, not a semantic one.)
   assert property (@(posedge clk) s_always [2:5] a_low)
     else low_s_fail_q.push_back(cyc);
   assert property (@(posedge clk) always [2:5] a_low)