refactor(ui): extract shared ProgressBar / CopyableTextOverlay / DrawPill helpers

UI-standardization audit: three draw patterns were copy-pasted across tabs and
dialogs. Promote each to a material:: helper and adopt at every verbatim site.
Output is pixel-identical (same colors/geometry threaded through as params).

- material::DrawProgressBar / ProgressBar — replaces 3 byte-identical rounded
  fill bars in the daemon/xmrig/bootstrap download dialogs.
- material::CopyableTextOverlay — the click-to-copy affordance (hit button +
  hand cursor + tooltip + hover underline + clipboard) shared by the peers
  best-block hash and the 3 mining stats (difficulty/block/address). Returns
  "copied this frame" so callers keep their own toast (no ui-layer dependency).
- material::DrawPill / PillSize — rounded bg + optional border + inset text
  badge, shared by the explorer status pill, the market Z/T chip, and the
  network official/custom tag.

Divergent one-offs left in place (transactions status pills use schema rounding
around pre-positioned multi-line text; the mining filter-pill is a button bg).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/ui/material/draw_helpers.h

@@ -279,6 +279,81 @@ inline ImFont* resolveButtonFont(int perButton, int sectionDefault)
     return resolveButtonFont(perButton >= 0 ? perButton : sectionDefault);
 }
 
+// ── Progress / fill bar ─────────────────────────────────────────────────
+// A rounded track with a fraction (0..1) fill, drawn at the current cursor and advancing the layout
+// cursor past it (matches the download-dialog usage). For a placement you control, use the pMin/pMax
+// overload. Defaults: theme Primary fill, a subtle white track, 4dp corners.
+inline void DrawProgressBar(ImDrawList* dl, const ImVec2& pMin, const ImVec2& pMax, float frac01,
+                            ImU32 fill = 0, ImU32 track = IM_COL32(255, 255, 255, 30), float rounding = -1.0f)
+{
+    if (fill == 0) fill = Primary();
+    if (rounding < 0.0f) rounding = 4.0f * Layout::dpiScale();
+    frac01 = frac01 < 0.0f ? 0.0f : (frac01 > 1.0f ? 1.0f : frac01);
+    dl->AddRectFilled(pMin, pMax, track, rounding);
+    if (frac01 > 0.0f)
+        dl->AddRectFilled(pMin, ImVec2(pMin.x + (pMax.x - pMin.x) * frac01, pMax.y), fill, rounding);
+}
+
+inline void ProgressBar(float width, float height, float frac01,
+                        ImU32 fill = 0, ImU32 track = IM_COL32(255, 255, 255, 30))
+{
+    ImVec2 pMin = ImGui::GetCursorScreenPos();
+    DrawProgressBar(ImGui::GetWindowDrawList(), pMin, ImVec2(pMin.x + width, pMin.y + height), frac01, fill, track);
+    ImGui::Dummy(ImVec2(0, height));
+}
+
+// ── Click-to-copy affordance ────────────────────────────────────────────
+// Turns an already-drawn text run into a click-to-copy control. The caller draws the visible text
+// (font/color/position of its choosing); this places an invisible hit button (textSize + hitPad) at
+// `pos`, shows a hand cursor + tooltip + a hover underline, and copies `copyValue` on click. Returns
+// true the frame it was clicked (already on the clipboard) so the caller can show its own toast.
+// Caller manages any cursor save/restore around the call.
+inline bool CopyableTextOverlay(const char* id, const ImVec2& pos, const ImVec2& textSize, float fontSize,
+                                const char* copyValue, const char* tooltip, const ImVec2& hitPad)
+{
+    const float dp = Layout::dpiScale();
+    ImGui::SetCursorScreenPos(pos);
+    ImGui::InvisibleButton(id, ImVec2(textSize.x + hitPad.x, fontSize + hitPad.y));
+    if (ImGui::IsItemHovered()) {
+        ImGui::SetMouseCursor(ImGuiMouseCursor_Hand);
+        if (tooltip && tooltip[0]) Tooltip("%s", tooltip);
+        const float uy = pos.y + fontSize + 1.0f * dp;
+        ImGui::GetWindowDrawList()->AddLine(ImVec2(pos.x, uy), ImVec2(pos.x + textSize.x, uy),
+                                            WithAlpha(OnSurface(), 60), 1.0f * dp);
+    }
+    bool copied = false;
+    if (ImGui::IsItemClicked()) {
+        ImGui::SetClipboardText(copyValue);
+        copied = true;
+    }
+    return copied;
+}
+
+// ── Pill / badge ─────────────────────────────────────────────────────────
+// A rounded chip: a filled background sized to `text` + `pad`, an optional 1px border, and the text
+// inset by `pad`. Use PillSize first when you need to right/center-anchor (compute the width, place
+// the pill, then draw).
+inline ImVec2 PillSize(const char* text, ImFont* font, const ImVec2& pad)
+{
+    ImVec2 t = font->CalcTextSizeA(font->LegacySize, FLT_MAX, 0.0f, text);
+    return ImVec2(t.x + pad.x * 2.0f, font->LegacySize + pad.y * 2.0f);
+}
+
+// Draw a pill/badge anchored at top-left `pos`. `border` == 0 draws no outline. rounding < 0 => fully
+// rounded (height/2). Returns the pill's total size.
+inline ImVec2 DrawPill(ImDrawList* dl, const ImVec2& pos, const char* text, ImFont* font,
+                       ImU32 fg, ImU32 bg, ImU32 border = 0,
+                       const ImVec2& pad = ImVec2(4.0f, 2.0f), float rounding = -1.0f)
+{
+    ImVec2 sz = PillSize(text, font, pad);
+    if (rounding < 0.0f) rounding = sz.y * 0.5f;
+    ImVec2 pMax(pos.x + sz.x, pos.y + sz.y);
+    dl->AddRectFilled(pos, pMax, bg, rounding);
+    if (border != 0) dl->AddRect(pos, pMax, border, rounding, 0, 1.0f * Layout::dpiScale());
+    dl->AddText(font, font->LegacySize, ImVec2(pos.x + pad.x, pos.y + pad.y), fg, text);
+    return sz;
+}
+
 // ── Tactile wrappers ────────────────────────────────────────────────────
 // Drop-in replacements for ImGui::Button / SmallButton that automatically
 // add the tactile highlight overlay after rendering.