Add Finance channel (web-only) with markets/macro feeds

New web-only category mirroring the EU channel: shows in the web UI but
does not post to Matrix. Adds the channel entry, emerald (money green)
theme utilities, and two macro/finance feeds (Naked Capitalism, Wolf
Street) to the example config.

internal/web/static/css/input.css

@@ -77,6 +77,7 @@ html[data-phase="night"] {
   .bg-theme-anime     { background-color: #ec5e8a; }
   .bg-theme-foss      { background-color: #d97706; }
   .bg-theme-kids      { background-color: #14b8a6; }
+  .bg-theme-finance   { background-color: #10b981; }
 
   .text-theme-gaming    { color: #2d8a5a; }
   .text-theme-tech      { color: #2f7fb8; }
@@ -86,6 +87,7 @@ html[data-phase="night"] {
   .text-theme-anime     { color: #c33a6a; }
   .text-theme-foss      { color: #b8530a; }
   .text-theme-kids      { color: #0f766e; }
+  .text-theme-finance   { color: #059669; }
 
   .decoration-theme-gaming    { text-decoration-color: #4caf7d; }
   .decoration-theme-tech      { text-decoration-color: #5aa9e6; }
@@ -95,6 +97,7 @@ html[data-phase="night"] {
   .decoration-theme-anime     { text-decoration-color: #ec5e8a; }
   .decoration-theme-foss      { text-decoration-color: #d97706; }
   .decoration-theme-kids      { text-decoration-color: #14b8a6; }
+  .decoration-theme-finance   { text-decoration-color: #10b981; }
 
   .border-theme-gaming    { border-color: #4caf7d; }
   .border-theme-tech      { border-color: #5aa9e6; }
@@ -104,6 +107,7 @@ html[data-phase="night"] {
   .border-theme-anime     { border-color: #ec5e8a; }
   .border-theme-foss      { border-color: #d97706; }
   .border-theme-kids      { border-color: #14b8a6; }
+  .border-theme-finance   { border-color: #10b981; }
 
   /* "Posted to Matrix" glow — soft pulsing aura in the channel's theme color. */
   .glow-theme-gaming   { box-shadow: 0 0 0 2px rgba(76,175,125,0.35), 0 0 24px 4px rgba(76,175,125,0.45); animation: pete-glow-pulse 2.4s ease-in-out infinite; }
@@ -114,6 +118,7 @@ html[data-phase="night"] {
   .glow-theme-anime    { box-shadow: 0 0 0 2px rgba(236,94,138,0.35), 0 0 24px 4px rgba(236,94,138,0.45); animation: pete-glow-pulse 2.4s ease-in-out infinite; }
   .glow-theme-foss     { box-shadow: 0 0 0 2px rgba(217,119,6,0.35), 0 0 24px 4px rgba(217,119,6,0.45); animation: pete-glow-pulse 2.4s ease-in-out infinite; }
   .glow-theme-kids     { box-shadow: 0 0 0 2px rgba(20,184,166,0.35), 0 0 24px 4px rgba(20,184,166,0.45); animation: pete-glow-pulse 2.4s ease-in-out infinite; }
+  .glow-theme-finance  { box-shadow: 0 0 0 2px rgba(16,185,129,0.35), 0 0 24px 4px rgba(16,185,129,0.45); animation: pete-glow-pulse 2.4s ease-in-out infinite; }
 
   @keyframes pete-glow-pulse {
     0%, 100% { filter: brightness(1); }