Add backups with S3, daily cost push, automation templates and a browser tool

- Daily backups (database + config) into <data_dir>/backups, keep N,
  optional upload to any S3-compatible bucket (SigV4, bucket pruning);
  settings panel with run-now, list and download
- Daily cost summary push at 20:00 (opt-in per user, preview button)
- Automations from templates (dependency check, security review, test
  health, daily summary, TODO report, docs freshness) via POST /jobs/create
- browser tool: headless Chromium over CDP – click, type, keys, waits,
  JavaScript, navigation, screenshots, console errors; requests to private
  network addresses are blocked (sub-resources and redirects included)
- Secrets masked in the config view: S3 secret key, metrics token
- Replace the remaining text arrows/refresh glyphs with SVG icons

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/whatsnew.ts

@@ -9,6 +9,7 @@ export const WHATS_NEW: Record<string, { en: string[]; de: string[] }> = {
       "15 colour themes with light/dark/auto, push notifications on your phone",
       "Ctrl+K command palette, prompt templates with placeholders, pin/archive sessions and sort them into folders",
       "Share text and links from other apps to CodeCraft (installed app on Android)",
+      "Automations from templates, a browser tool for agents (click, type, check pages), daily backups with optional S3 copy",
     ],
     de: [
       "Terminal-Client `codecraft`: lokal arbeiten wie mit Claude Code – Einstellungen → Konto → Terminal-Client",
@@ -18,6 +19,7 @@ export const WHATS_NEW: Record<string, { en: string[]; de: string[] }> = {
       "15 Farbthemes mit Hell/Dunkel/Auto, Push-Benachrichtigungen aufs Handy",
       "Ctrl+K-Befehlspalette, Prompt-Vorlagen mit Platzhaltern, Sessions anpinnen/archivieren und in Ordner sortieren",
       "Texte und Links aus anderen Apps an CodeCraft teilen (installierte App unter Android)",
+      "Automationen aus Vorlagen, Browser-Werkzeug für Agenten (klicken, tippen, Seiten prüfen), tägliche Backups mit optionaler S3-Kopie",
     ],
   },
 };