doc to prefer literal html injection

bliss-cli/SKILL.md

@@ -41,6 +41,13 @@ own SQLite file). Ids are integers. Build a structure by: create it → add a db
 write its library → add routes whose handlers call the library → add templates
 the handlers render.
 
+**Templates are hypermedia, not escaped-string templates.** Default to `<%~ %>`
+(raw) over `<%= %>` (escaped) in Eta content — only use `<%= %>` inside an HTML
+attribute value, where an unescaped `"` would break the tag. Reach for htmx
+attributes (`hx-trigger="every 10s"`, `hx-swap-oob`, etc.) instead of JS
+`setTimeout`/`fetch` polling loops. See CLAUDE.md's "hypermedia homestead"
+section for the full rationale.
+
 ## Reads (JSON)
 
 ```bash