feat(web): tane.comunes.org landing + localized app screenshots

- Hugo site (site/): EN/ES intro + legal (generated from docs/legal), an
  ES/EN About page from docs/{que-es-tane,what-is-tane}.md, seed-green theme,
  responsive header, store-badge placeholders, multi-stage Hugo->nginx image.
- Golden screenshot harness (test/screenshots/): en,es,fr,de,pt,ja + RTL demo,
  real fonts via DejaVu Sans + FontManifest; skip-by-default tag so CI stays
  green. collect_screenshots.sh feeds site/ and fastlane phoneScreenshots.
- Drop editorial notes from the public explainer.

site/config.toml

@@ -0,0 +1,36 @@
+baseURL = "https://tane.comunes.org/"
+title = "Tane"
+defaultContentLanguage = "en"
+defaultContentLanguageInSubdir = false
+enableRobotsTXT = true
+enableGitInfo = false
+
+# Static, no-JS marketing site. Kept intentionally light: one page + a small
+# legal section, English/Spanish. Screenshots come from the app's golden
+# harness (apps/app_seeds/test/screenshots), copied in by collect_screenshots.sh.
+
+[params]
+  email = "info@comunes.org"
+  publisher = "Asociación Comunes"
+  publisherURL = "https://comunes.org"
+  license = "AGPL-3.0"
+  # Store links are empty until the app is published; the badges partial renders
+  # a link only when its URL is set here, so nothing broken shows before launch.
+  playStoreURL = ""
+  fdroidURL = ""
+
+[languages]
+  [languages.en]
+    languageName = "English"
+    languageCode = "en"
+    weight = 1
+  [languages.es]
+    languageName = "Español"
+    languageCode = "es"
+    weight = 2
+
+[markup.goldmark.renderer]
+  unsafe = false
+
+[minify]
+  disableJSON = true