diff --git a/VERSION b/VERSION
index ace4423..42cf067 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.15.1
+1.15.2
diff --git a/VERSIONS.md b/VERSIONS.md
index 45ca9b2..470fe10 100644
--- a/VERSIONS.md
+++ b/VERSIONS.md
@@ -17,6 +17,7 @@ Git tags: `vMAJOR.FEATURE.FIX` (e.g. `v1.8.0`). File `VERSION` omits the `v` pre
 
 | Tag | Date (UTC) | Notes |
 |-----|------------|--------|
+| **v1.15.2** | 2026-07-19 | **Bugfix:** warn/error filter — drop blank log lines from HTML; compact console (no black voids above/mid/below); context skips SUMMARY chrome & pure box frames; tighter filter-gap. |
 | **v1.15.1** | 2026-07-19 | **Bugfix:** mon HTML — phase `section()` boxes no longer painted as SUMMARY (were blue/green `sum-header`); only real SUMMARY rows get solid severity backgrounds (OK/WARN/ERROR/INFO). |
 | **v1.15.0** | 2026-07-19 | **Feature:** CHF **fake-incoming amount ladder** in `devtesting` (`DEVTESTING_LADDER=1`, default **23** log-spaced rungs **CHF:0.01 → CHF:50000**); synthetic geniban debit funds each rung; baseline plumbing probe kept. |
 | **v1.14.0** | 2026-07-19 | **Feature:** SUMMARY box rows are **colour-distinct** (per-severity badge + tinted background + bold counts; verdict-coloured header); HTML mon pages style `sum-ok` / `sum-warn` / `sum-err` / … panels the same way. |
diff --git a/site-gen/console_to_html.py b/site-gen/console_to_html.py
index 43ffcd2..89dd4ee 100755
--- a/site-gen/console_to_html.py
+++ b/site-gen/console_to_html.py
@@ -549,6 +549,10 @@ def slug_error(i: int, text: str) -> str:
 
 
 def render_line(ln: str, err_slugs: dict[str, str], extra_ids: list[str] | None = None) -> str:
+    # Drop blank log lines entirely — they only create black voids in the console
+    # (especially visible under warn/error filter). Anchors still attach to next real line.
+    if not (ln or "").strip():
+        return ""
     kind = classify(ln)
     esc = html.escape(ln)
     for tid, slug in err_slugs.items():
@@ -563,8 +567,11 @@ def render_line(ln: str, err_slugs: dict[str, str], extra_ids: list[str] | None
         # HTML allows one id — join carefully
         id_attr = f' id="{html.escape(extra_ids[0])}"'
         if len(extra_ids) > 1:
-            # secondary anchors as empty spans prepended
-            spans = "".join(f'<span id="{html.escape(x)}"></span>' for x in extra_ids[1:])
+            # secondary anchors as empty spans prepended (inline, zero layout impact)
+            spans = "".join(
+                f'<span id="{html.escape(x)}" class="anchor-only"></span>'
+                for x in extra_ids[1:]
+            )
             return f'{spans}<div{id_attr} class="line {kind}">{esc}</div>\n'
     return f'<div{id_attr} class="line {kind}">{esc}</div>\n'
 
@@ -1175,38 +1182,83 @@ body.filter-warn .filter-chip { border-color: #a68b2d; background: #1a1608; colo
   padding: 1px 8px;
 }
 .filter-clear:hover { border-color: #aaa; background: #222; }
-/* Console filter: sticky + overviews stay; match lines + dimmed neighbours (v1.13.11) */
-body.filter-error #mon-console .line:not(.error):not(.blocker):not(.filter-ctx) { display: none !important; }
-body.filter-warn #mon-console .line:not(.warn):not(.filter-ctx) { display: none !important; }
+/* Console filter: sticky + overviews stay; match lines + dimmed neighbours (v1.13.11+)
+   v1.15.2: stamp out black voids — hide blanks, zero-size non-matches, compact console */
+body.filter-error #mon-console,
+body.filter-warn #mon-console {
+  padding: 6px 8px;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 1px;
+}
+body.filter-error #mon-console .line:not(.error):not(.blocker):not(.filter-ctx),
+body.filter-warn #mon-console .line:not(.warn):not(.filter-ctx) {
+  display: none !important;
+  height: 0 !important;
+  margin: 0 !important;
+  padding: 0 !important;
+  border: none !important;
+  overflow: hidden !important;
+  line-height: 0 !important;
+}
+/* empty / whitespace-only lines never take space in filter mode */
+body.filter-error #mon-console .line:empty,
+body.filter-warn #mon-console .line:empty,
+body.filter-error #mon-console .line.line-blank,
+body.filter-warn #mon-console .line.line-blank {
+  display: none !important;
+}
 /* Context lines: grayed / muted so the warn|error still stands out */
 body.filter-error #mon-console .line.filter-ctx,
 body.filter-warn #mon-console .line.filter-ctx {
-  opacity: 0.48;
-  color: #7a7a7a !important;
-  filter: grayscale(0.9);
+  opacity: 0.55;
+  color: #8a8a8a !important;
+  filter: grayscale(0.85);
+  margin: 0 !important;
+  padding: 1px 4px !important;
+  border: none !important;
+  background: transparent !important;
 }
 body.filter-error #mon-console .line.filter-ctx a.jump,
 body.filter-warn #mon-console .line.filter-ctx a.jump {
   color: #6a6a6a !important;
 }
-/* Visual break when filter jumps across a gap in the log */
+/* Match lines stay tight */
+body.filter-error #mon-console .line.error,
+body.filter-error #mon-console .line.blocker,
+body.filter-warn #mon-console .line.warn {
+  margin: 1px 0 !important;
+  padding: 3px 6px !important;
+}
+/* Compact ellipsis between distant clusters (not a black slab) */
 body.filter-error #mon-console .filter-gap,
 body.filter-warn #mon-console .filter-gap {
   display: block;
-  color: #555;
+  color: #666;
   text-align: center;
-  padding: 6px 0;
-  margin: 4px 0;
-  letter-spacing: 0.35em;
-  font-size: 11px;
+  padding: 0;
+  margin: 2px 0;
+  letter-spacing: 0.25em;
+  font-size: 10px;
+  line-height: 1.2;
   user-select: none;
-  border-top: 1px dashed #333;
-  border-bottom: 1px dashed #333;
+  border: none;
+  background: transparent;
+  height: auto;
 }
 body:not(.filter-error):not(.filter-warn) #mon-console .filter-gap { display: none !important; }
 body.filter-error .env-context,
 body.filter-warn .env-context { display: none !important; }
 body.filter-warn .err-top { display: none; }
+/* secondary jump anchors: never affect layout */
+#mon-console .anchor-only {
+  display: inline;
+  width: 0;
+  height: 0;
+  overflow: hidden;
+  position: absolute;
+}
 /* v1.12.0: collapsible monitoring env context (default closed) */
 .env-context {
   margin: 0 0 12px;
@@ -1436,14 +1488,14 @@ STICKY_JS = """
   }
 
   // v1.11.0: click error/warn stats → filter log; sticky + overviews stay
-  // v1.13.11: keep a few neighbour lines (dimmed) so phase/group context stays readable
+  // v1.13.11: dimmed neighbour context; v1.15.2: stamp out black voids, compact layout
   var bar = document.getElementById("status-bar");
   var chip = document.getElementById("filter-chip");
   var chipLabel = document.getElementById("filter-chip-label");
   var clearBtn = document.getElementById("filter-clear");
   var consoleEl = document.getElementById("mon-console");
-  // lines above + below each match (same count either side)
-  var FILTER_CTX = 3;
+  // useful neighbours each side (skip blanks / SUMMARY chrome / pure box frames)
+  var FILTER_CTX = 2;
 
   function currentFilter() {
     if (document.body.classList.contains("filter-error")) return "error";
@@ -1459,11 +1511,13 @@ STICKY_JS = """
     consoleEl.querySelectorAll(".filter-gap").forEach(function (el) {
       el.parentNode && el.parentNode.removeChild(el);
     });
+    document.body.classList.remove("filter-compact");
   }
 
   function markFilterContext(mode) {
     clearFilterContext();
     if (!consoleEl || !mode) return;
+    document.body.classList.add("filter-compact");
     var lines = Array.prototype.slice.call(consoleEl.querySelectorAll(".line"));
     if (!lines.length) return;
     function isMatch(el) {
@@ -1477,19 +1531,30 @@ STICKY_JS = """
       var t = (el.textContent || "").replace(/\u00a0/g, " ").trim();
       return t.length === 0;
     }
-    // 0 = hide, 1 = match, 2 = context
+    function isLowValue(el) {
+      if (isBlankLine(el)) return true;
+      if (el.classList.contains("sum-header") || el.classList.contains("sum-ok")
+          || el.classList.contains("sum-warn") || el.classList.contains("sum-err")
+          || el.classList.contains("sum-info") || el.classList.contains("sum-block")
+          || el.classList.contains("sum-totals") || el.classList.contains("sum-verdict-ok")
+          || el.classList.contains("sum-verdict-warn") || el.classList.contains("sum-verdict-err")) {
+        return true;
+      }
+      var t = (el.textContent || "").replace(/\u00a0/g, " ").trim();
+      if (/^[╔╗╚╝║═\-\s│┌┐└┘]+$/.test(t)) return true;
+      return false;
+    }
     var keep = new Array(lines.length);
     var i, j, k, n, idx;
     for (i = 0; i < lines.length; i++) keep[i] = 0;
     for (i = 0; i < lines.length; i++) {
       if (!isMatch(lines[i])) continue;
       keep[i] = 1;
-      // ±FILTER_CTX *non-empty* neighbours (skip blank lines so filter is not full of voids)
       n = 0;
       idx = i - 1;
       while (idx >= 0 && n < FILTER_CTX) {
         if (keep[idx] === 1) { idx--; continue; }
-        if (isBlankLine(lines[idx])) { idx--; continue; }
+        if (isLowValue(lines[idx])) { idx--; continue; }
         keep[idx] = 2;
         n++;
         idx--;
@@ -1498,7 +1563,7 @@ STICKY_JS = """
       idx = i + 1;
       while (idx < lines.length && n < FILTER_CTX) {
         if (keep[idx] === 1) { idx++; continue; }
-        if (isBlankLine(lines[idx])) { idx++; continue; }
+        if (isLowValue(lines[idx])) { idx++; continue; }
         keep[idx] = 2;
         n++;
         idx++;
@@ -1506,10 +1571,11 @@ STICKY_JS = """
     }
     for (j = 0; j < lines.length; j++) {
       if (keep[j] === 2) lines[j].classList.add("filter-ctx");
-      // never show pure blank lines in filter mode
-      if (isBlankLine(lines[j]) && keep[j] !== 1) keep[j] = 0;
+      if (isBlankLine(lines[j])) {
+        keep[j] = 0;
+        lines[j].classList.add("line-blank");
+      }
     }
-    // dashed gap between non-contiguous visible clusters
     var prevVisible = -2;
     for (k = 0; k < lines.length; k++) {
       if (keep[k] === 0) continue;