TTS fixes, Inworld improvements, footer redesign, episodes 15-25, invoice script fix

- Fix TTS text pipeline: new caps handling (spell out unknown acronyms, lowercase
  emphasis words), action-word lookahead for parenthetical stripping, abbreviation
  expansions (US→United States, NM→New Mexico), pronunciation fixes
- Inworld TTS: camelCase API fields, speakingRate per-voice overrides, retry logic
  with exponential backoff (3 attempts)
- Footer redesign: SVG icons for social/podcast links across all pages
- Stats page: show "Rate us on Spotify" instead of "not public" placeholder
- New voices, expanded caller prompts and problem scenarios
- Social posting via Postiz, YouTube upload in publish pipeline
- Episode transcripts 15-25, terms page, sitemap updates
- Fix invoice script: match Timing totals using merged Task+App intervals

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

website/css/style.css

@@ -173,9 +173,10 @@ a:hover {
 /* Subscribe — compact inline text links */
 .subscribe-row {
   display: flex;
+  flex-direction: column;
   align-items: center;
   justify-content: center;
-  gap: 0.5rem;
+  gap: 0.25rem;
   margin-top: 1rem;
 }
 
@@ -573,21 +574,68 @@ a:hover {
   border-top: 1px solid #2a2015;
 }
 
-.footer-links {
+.footer-nav {
   display: flex;
+  flex-wrap: wrap;
   justify-content: center;
-  gap: 1.5rem;
-  margin-bottom: 0.75rem;
+  gap: 0.5rem 1.5rem;
+  margin-bottom: 1rem;
 }
 
-.footer-links a {
+.footer-nav a {
   color: var(--text-muted);
 }
 
-.footer-links a:hover {
+.footer-nav a:hover {
   color: var(--text);
 }
 
+.footer-icons {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 0.5rem;
+  margin-bottom: 1rem;
+}
+
+.footer-icons-label {
+  display: block;
+  font-size: 0.7rem;
+  text-transform: uppercase;
+  letter-spacing: 0.15em;
+  color: var(--text-muted);
+}
+
+.footer-icons-row {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+  gap: 0.5rem;
+}
+
+.footer-icon-link {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 36px;
+  height: 36px;
+  border-radius: var(--radius-sm);
+  background: rgba(255, 255, 255, 0.05);
+  color: var(--accent);
+  transition: color 0.2s, background 0.2s, transform 0.2s;
+}
+
+.footer-icon-link:hover {
+  color: var(--accent-hover);
+  background: rgba(255, 255, 255, 0.1);
+  transform: translateY(-2px);
+}
+
+.footer-icon-link svg {
+  width: 18px;
+  height: 18px;
+}
+
 .footer-projects {
   margin: 1.25rem 0;
   padding: 1rem 0;
@@ -1252,7 +1300,10 @@ a:hover {
   }
 
   .subscribe-row {
+    flex-direction: row;
+    align-items: center;
     justify-content: flex-start;
+    gap: 0.5rem;
   }
 
   .secondary-links {