Add Watchlists section — hub, 5 collection pages, build pipeline

- watchlists-hub.html: comic book panel grid, neon-teal/green/toucan palette,
  Rambla-only type hierarchy, CSS stagger entrance, wired to star map
- 5 collection pages built from *-watchlist.md sources via build.py:
  contentaddictionarchive, analogfrontier, culturaldecay,
  soundscapeanomalies, lastcinema
- build.py: parses MD files, generates self-contained HTML pages,
  updates hub subtitle with live counts
- index.html: Watchlists star node wired to Watchlists/watchlists-hub.html

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

Watchlists/CulturalDecay-watchlist.md

@@ -0,0 +1,30 @@
+# Cultural Decay Observations
+
+---
+
+>>on-first-load - lightbox - "The internet ate the 20th century and we watched it happen in real time. The video essay form — someone with a camera and a thesis, talking into the void — became the literature of my generation. These are the playlists I return to when I want to understand the shape of the thing we're all living inside. Criticism as a survival skill."
+
+---
+
+- **Internet Analysis, by tiffanyferg \- YouTube**
+  - URL: https://www.youtube.com/playlist?list=PLeYBqpyQVyaYqtBAfbNy6d_xtxcrjCVy6
+
+- **Internet Girl Mythology: Pop Culture & Digital Dissected \- YouTube**
+  - URL: https://www.youtube.com/playlist?list=PLkTkIkgJg3GsmoEsh4a9-YRUuZtHNr0w9
+
+- **Essays: Media & Pop Culture \- YouTube**
+  - URL: https://www.youtube.com/playlist?list=PLa8L4_jjaB62-j89zcyfQ_ZV7bVceMSDB
+
+- **Media & Pop Culture Analysis \- YouTube**
+  - URL: https://www.youtube.com/playlist?list=PLJQUAVYdQ53t3hqA1t1hNcWrrZT5sGMfj
+
+- **Video Essays \(Solar Sands\) \- YouTube**
+  - URL: https://www.youtube.com/playlist?list=PLgp6-KTN0LyAkDMmtGROSmer8IpL7kUSd
+
+- **Media Video Essays \- YouTube**
+  - URL: https://www.youtube.com/playlist?list=PLK5fE38XOCnpWSvoxMNL8igQxPZlAi4_F
+
+- **Actually Interesting Video Essays \- YouTube**
+  - URL: https://www.youtube.com/playlist?list=PLbOF9TQmQrNgWHaLCPaE81l4hEL-2Rrjf
+
+---