Remove contributing and component docs from the public docs site

Drop the Contributing and internals section, Architecture, Frontend,
and dp-* component pages from the docs registry, prose files, nav, and
legacy redirect target. Guard with tests that fail if they return.

molodetz/docs_prose.py

@@ -10,9 +10,7 @@ from molodetz.rendering import normalize_dashes
 
 PROSE_DIR = config.TEMPLATES_DIR / "docs" / "prose"
 
-SECTIONS = ("Start here", "Building with the API", "Contributing and internals", "Admin")
-
-COMPONENTS = ("avatar", "code", "content", "title", "toast", "dialog", "context-menu", "upload", "lightbox", "chat")
+SECTIONS = ("Start here", "Building with the API", "Admin")
 
 DOCS_PAGES = [
     {"slug": "welcome", "title": "Welcome", "section": "Start here", "file": "welcome.md"},
@@ -20,18 +18,8 @@ DOCS_PAGES = [
     {"slug": "join", "title": "Joining", "section": "Start here", "file": "join.md"},
     {"slug": "legal", "title": "Terms and privacy", "section": "Start here", "file": "legal.md"},
     {"slug": "api", "title": "API and authentication", "section": "Building with the API", "file": "api.md"},
-    {"slug": "architecture", "title": "Architecture", "section": "Contributing and internals", "file": "architecture.md"},
-    {"slug": "frontend", "title": "Frontend and components", "section": "Contributing and internals", "file": "frontend.md"},
     {"slug": "admin", "title": "Admin and services", "section": "Admin", "file": "admin.md", "admin": True},
     {"slug": "backups", "title": "Backups and maintenance", "section": "Admin", "file": "backups.md", "admin": True},
-] + [
-    {
-        "slug": f"component-{name}",
-        "title": f"dp-{name}",
-        "section": "Contributing and internals",
-        "file": f"component-{name}.md",
-    }
-    for name in COMPONENTS
 ]