fix(ui): overview/mining polish + default-pool cleanup

- balance: inset the address-row favorite (star) button by the card's inner
  padding so it mirrors the left margin instead of hugging the card edge.
- mining: remove pool.dragonx.cc from the built-in default pools (pool.dragonx.is
  is now the sole default); update the pool-registry test accordingly.
- mining: middle-truncate saved pool-URL and payout-address dropdown rows (new
  shared material::TruncateToWidth helper) so a full z-address no longer runs
  under the trailing delete (X) button.
- mining: fix the thread-grid cells overflowing the card at >100% display
  scaling — the reserved Mine-button width used a raw clamp that didn't scale;
  scale it by dp so cols is estimated correctly (no-op at 100%).

Full-node build + test suite green.

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

src/ui/material/draw_helpers.h

@@ -57,6 +57,21 @@ inline ImU32 ReadableError() {
     return IM_COL32(r, g, b, (e >> IM_COL32_A_SHIFT) & 0xFF);
 }
 
+// Middle-ellipsis truncation ("front...back", roughly equal halves) so `text` fits within
+// maxWidth pixels when drawn with `font` at `fontSize`. Returns `text` unchanged if it already
+// fits (or maxWidth is non-positive). Display-only — never mutate the underlying value with this.
+inline std::string TruncateToWidth(const std::string& text, ImFont* font, float fontSize, float maxWidth) {
+    if (text.empty() || !font || maxWidth <= 0.0f) return text;
+    if (font->CalcTextSizeA(fontSize, FLT_MAX, 0.0f, text.c_str()).x <= maxWidth) return text;
+    const int n = static_cast<int>(text.size());
+    for (int f = n / 2; f >= 3; --f) {
+        const int b = (f - 2 > 3) ? (f - 2) : 3;             // keep the two halves roughly equal
+        std::string t = text.substr(0, f) + "..." + text.substr(n - b);
+        if (font->CalcTextSizeA(fontSize, FLT_MAX, 0.0f, t.c_str()).x <= maxWidth) return t;
+    }
+    return n > 6 ? (text.substr(0, 3) + "..." + text.substr(n - 3)) : text;
+}
+
 // Animated "loading" ellipsis: "", ".", "..", "..." cycling on a ~3Hz phase.
 inline const char* LoadingDots() {
     int n = ((int)(ImGui::GetTime() * 3.0f)) % 4;

src/ui/windows/balance_address_list.cpp

@@ -70,6 +70,7 @@ AddressRowLayout ComputeAddressRowLayout(float rowX,
                                          float spacingSm,
                                          float spacingXs)
 {
+    (void)spacingXs;  // trailing button now insets by rowPadLeft (mirrors the left margin)
     AddressRowLayout layout;
     layout.contentStartX = rowX + rowPadLeft;
     layout.contentStartY = rowY + spacingMd;
@@ -77,7 +78,9 @@ AddressRowLayout ComputeAddressRowLayout(float rowX,
 
     const float buttonY = rowY + (rowHeight - layout.buttonSize) * 0.5f;
     const float rightEdge = rowX + rowWidth;
-    const float favoriteX = rightEdge - layout.buttonSize - spacingXs;
+    // Inset the trailing (favorite/star) button by the card's inner padding — the same margin the
+    // left content uses (rowPadLeft) — so it mirrors the left edge instead of hugging the card edge.
+    const float favoriteX = rightEdge - layout.buttonSize - rowPadLeft;
     const float visibilityX = favoriteX - spacingSm - layout.buttonSize;
 
     layout.favoriteButton = {favoriteX, buttonY, layout.buttonSize, layout.buttonSize};

src/ui/windows/mining_controls.cpp

@@ -57,7 +57,10 @@ void RenderMiningControls(App* app, const WalletState& state, const MiningInfo&
 
         // --- Compute thread grid layout based on controls card width ---
         // Estimate controlsW first to compute cols correctly
-        float estControlsW = availWidth - std::min(schema::UI().drawElement("tabs.mining", "button-max-width-clamp").size, miningBtnMaxW) - miningBtnGap;
+        // The Mine button is square (= card height, which scales with DPI), so the width we
+        // reserve for it here must scale too — a RAW clamp under-reserves at >100% scaling, which
+        // over-estimates the grid width and lets the thread cells overflow the card (e.g. at 150%).
+        float estControlsW = availWidth - std::min(schema::UI().drawElement("tabs.mining", "button-max-width-clamp").size * dp, miningBtnMaxW) - miningBtnGap;
         float innerW  = estControlsW - pad * 2;
         float cellSz  = std::clamp(schema::UI().drawElement("tabs.mining", "cell-size").size * vs, schema::UI().drawElement("tabs.mining", "cell-min-size").size, schema::UI().drawElement("tabs.mining", "cell-max-size").sizeOr(42.0f));
         float cellGap = std::max(schema::UI().drawElement("tabs.mining", "cell-gap-min").size, cellSz * schema::UI().drawElement("tabs.mining", "cell-gap-ratio").size);

src/ui/windows/mining_mode_toggle.cpp

@@ -308,11 +308,14 @@ void RenderMiningModeToggle(App* app, const WalletState& state, const MiningInfo
                             pdl->AddRectFilled(rowMin, rowMax, IM_COL32(255, 255, 255, 10));
                         if (rowHov && !inXZone)
                             pdl->AddRectFilled(rowMin, rowMax, StateHover());
-                        // Item text with internal padding
+                        // Item text with internal padding, middle-truncated so a long saved URL
+                        // can't run under the trailing X (delete) button.
                         float textY = rowMin.y + (rowH - rowFontSz) * 0.5f;
+                        float maxTextW = popupInnerW - xZoneW - textPadX * 2.0f;
+                        std::string urlDisp = material::TruncateToWidth(url, rowFont, rowFontSz, maxTextW);
                         pdl->AddText(rowFont, rowFontSz,
                             ImVec2(rowMin.x + textPadX, textY),
-                            isCurrent ? Primary() : OnSurface(), url.c_str());
+                            isCurrent ? Primary() : OnSurface(), urlDisp.c_str());
                         // X button — flush with right edge, icon centered
                         {
                             ImVec2 xMin(rowMax.x - xZoneW, rowMin.y);
@@ -467,11 +470,14 @@ void RenderMiningModeToggle(App* app, const WalletState& state, const MiningInfo
                             pdl->AddRectFilled(rowMin, rowMax, IM_COL32(255, 255, 255, 10));
                         if (rowHov && !inXZone)
                             pdl->AddRectFilled(rowMin, rowMax, StateHover());
-                        // Full address text with internal padding
+                        // Address text with internal padding, middle-truncated so a full z-address
+                        // (~78 chars) can't run under the trailing X (delete) button.
                         float textY = rowMin.y + (wRowH - wRowFontSz) * 0.5f;
+                        float wMaxTextW = wPopupInnerW - wXZoneW - wTextPadX * 2.0f;
+                        std::string addrDisp = material::TruncateToWidth(addr, wRowFont, wRowFontSz, wMaxTextW);
                         pdl->AddText(wRowFont, wRowFontSz,
                             ImVec2(rowMin.x + wTextPadX, textY),
-                            isCurrent ? Primary() : OnSurface(), addr.c_str());
+                            isCurrent ? Primary() : OnSurface(), addrDisp.c_str());
                         // Tooltip for long addresses
                         if (rowHov && !inXZone)
                             material::Tooltip("%s", addr.c_str());

src/util/pool_registry_core.cpp

@@ -30,14 +30,6 @@ const std::vector<KnownPool>& knownPools()
             "https://pool.dragonx.is/api/stats", PoolStatsSchema::DragonXIs,
             /*miningcorePoolId=*/"", /*feePercent=*/0.0, /*official=*/true,
         },
-        KnownPool{
-            // The mining (stratum) host is us.dragonx.cc — pool.dragonx.cc is the
-            // Cloudflare-proxied web/API host and does NOT accept stratum on :3333.
-            // Stats still come from pool.dragonx.cc/api/pools (proxied HTTP is fine).
-            "dragonx-cc-pplns", "pool.dragonx.cc", "us.dragonx.cc:3333", "rx/dragonx",
-            "https://pool.dragonx.cc/api/pools", PoolStatsSchema::Miningcore,
-            /*miningcorePoolId=*/"dragonx-pplns", /*feePercent=*/3.0, /*official=*/true,
-        },
     };
     return pools;
 }

tests/test_phase4.cpp

@@ -3434,9 +3434,11 @@ void testBalanceAddressListModel()
     EXPECT_NEAR(layout.contentStartX, 22.0, 0.0001);
     EXPECT_NEAR(layout.contentStartY, 26.0, 0.0001);
     EXPECT_NEAR(layout.buttonSize, 38.0, 0.0001);
-    EXPECT_NEAR(layout.favoriteButton.x, 270.0, 0.0001);
+    // Trailing (favorite) button is inset by rowPadLeft (12) so it mirrors the left margin
-    EXPECT_NEAR(layout.visibilityButton.x, 228.0, 0.0001);
+    // instead of hugging the card edge: 310 - 38 - 12 = 260.
-    EXPECT_NEAR(layout.contentRight, 224.0, 0.0001);
+    EXPECT_NEAR(layout.favoriteButton.x, 260.0, 0.0001);
+    EXPECT_NEAR(layout.visibilityButton.x, 218.0, 0.0001);
+    EXPECT_NEAR(layout.contentRight, 214.0, 0.0001);
     EXPECT_EQ(dragonx::ui::FormatAddressUsdValue(2.0, 3.5), std::string("$7.00"));
     EXPECT_EQ(dragonx::ui::FormatAddressUsdValue(0.001, 2.0), std::string("$0.002000"));
     EXPECT_EQ(dragonx::ui::FormatAddressUsdValue(0.0, 2.0), std::string(""));
@@ -5774,23 +5776,20 @@ void testXmrigLiveInstall()
 void testPoolRegistryLookup()
 {
     using namespace dragonx::util;
-    EXPECT_EQ(knownPools().size(), static_cast<std::size_t>(2));
+    // pool.dragonx.cc was removed from the built-in defaults; pool.dragonx.is is the sole entry.
+    EXPECT_EQ(knownPools().size(), static_cast<std::size_t>(1));
 
-    // The algo follows the pool. Note pool.dragonx.cc's stratum host is us.dragonx.cc
+    // The algo follows the pool: pool.dragonx.is resolves to rx/hush regardless of the caller default.
-    // (the .cc domain is only the Cloudflare-proxied web/API host).
-    EXPECT_EQ(resolvePoolAlgo("us.dragonx.cc:3333", "rx/hush"), std::string("rx/dragonx"));
     EXPECT_EQ(resolvePoolAlgo("pool.dragonx.is:3433", "rx/dragonx"), std::string("rx/hush"));
-    // Bare host (no port) still matches; scheme + path are tolerated.
+    // The former us.dragonx.cc (pool.dragonx.cc) host is now unknown -> caller's fallback algo.
-    EXPECT_EQ(resolvePoolAlgo("us.dragonx.cc", "rx/hush"), std::string("rx/dragonx"));
+    EXPECT_EQ(resolvePoolAlgo("us.dragonx.cc:3333", "rx/hush"), std::string("rx/hush"));
-    EXPECT_EQ(resolvePoolAlgo("stratum+tcp://us.dragonx.cc:3333/x", "rx/hush"),
-              std::string("rx/dragonx"));
-    // Unknown host -> fallback algo.
     EXPECT_EQ(resolvePoolAlgo("my.pool.example:1234", "rx/hush"), std::string("rx/hush"));
 
-    EXPECT_TRUE(findKnownPoolByUrl("us.dragonx.cc:3333") != nullptr);
+    EXPECT_TRUE(findKnownPoolByUrl("pool.dragonx.is:3433") != nullptr);
+    EXPECT_TRUE(findKnownPoolByUrl("us.dragonx.cc:3333") == nullptr);  // removed built-in default
     EXPECT_TRUE(findKnownPoolByUrl("unknown.host:1") == nullptr);
     // A mismatched explicit port must NOT match a known pool.
-    EXPECT_TRUE(findKnownPoolByUrl("us.dragonx.cc:9999") == nullptr);
+    EXPECT_TRUE(findKnownPoolByUrl("pool.dragonx.is:9999") == nullptr);
 }
 
 // Schema-aware pool hashrate parsing (the two pools speak different APIs).