docs(meta): PR #197 review captures — stroke-floor width-inertness + unreachable-pole-branch notes; bench reflow

Tyre's two governance sentences on the D-226 course note: (a) the
Godot rasterizer floor makes per-class course WIDTH differentiation
inert at every shipping fit zoom — classes distinguish by opacity
alone until T-1175's per-vertex tapering; the 'trunk widest' promise
is design intent, not current pixels. (b) The pole-row edge-drain
branch is structurally unreachable; the real mechanism is interior
k<0 (revert-verification discovery). Plus the dangling cargo-fmt
reflow in the course-cost bench from the gate-bounce round.

Tickets: T-1170

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

server/tests/zoom_ladder_bench.rs

@@ -420,10 +420,28 @@ fn bench_course_cost_on_vs_off() {
 
     // Warm-up (allocator/cache warm, not counted).
     let _ = build_district_window_layer(
-        seed, "GJ1c", &params, &ta, &rn_off, center, n, &climate, WindowGranularity::District, 0,
+        seed,
+        "GJ1c",
+        &params,
+        &ta,
+        &rn_off,
+        center,
+        n,
+        &climate,
+        WindowGranularity::District,
+        0,
     );
     let _ = build_district_window_layer(
-        seed, "GJ1c", &params, &ta, rn_on, center, n, &climate, WindowGranularity::District, 0,
+        seed,
+        "GJ1c",
+        &params,
+        &ta,
+        rn_on,
+        center,
+        n,
+        &climate,
+        WindowGranularity::District,
+        0,
     );
 
     let iterations = 1000; // higher count than the other benches — window cost here is ~1 ms, noisy at low n
@@ -431,7 +449,16 @@ fn bench_course_cost_on_vs_off() {
     let t_off = Instant::now();
     for _ in 0..iterations {
         let layer = build_district_window_layer(
-            seed, "GJ1c", &params, &ta, &rn_off, center, n, &climate, WindowGranularity::District, 0,
+            seed,
+            "GJ1c",
+            &params,
+            &ta,
+            &rn_off,
+            center,
+            n,
+            &climate,
+            WindowGranularity::District,
+            0,
         );
         std::hint::black_box(layer.morphology.len());
     }
@@ -442,7 +469,16 @@ fn bench_course_cost_on_vs_off() {
     let mut courses_seen = 0usize;
     for _ in 0..iterations {
         let layer = build_district_window_layer(
-            seed, "GJ1c", &params, &ta, rn_on, center, n, &climate, WindowGranularity::District, 0,
+            seed,
+            "GJ1c",
+            &params,
+            &ta,
+            rn_on,
+            center,
+            n,
+            &climate,
+            WindowGranularity::District,
+            0,
         );
         courses_seen = layer.courses.len();
         std::hint::black_box(layer.morphology.len());