feat: Claude Agent integration + cookbook reconnect + UI polish

- Claude Agent integration: AGENT_CONFIGS.claude, INTG_TYPES.claude,
  setup_claude_routes + integrations/claude/ skill bundle. Wired in
  app.py alongside the existing Codex integration; same scope-gated
  /api/codex/* backend; agent form has new description so users know
  it's setup for an external CLI, not an agent streamed inside Odysseus.
- Remove mark_email_boundaries action: not good enough yet. Stripped
  from task UI, scheduler defaults, registry, tool schema, clear-cache
  route. Added to RETIRED_HOUSEKEEPING_ACTIONS so existing rows + their
  task_runs auto-purge on startup.
- Cookbook download reliability: "Reconnect" fix button in the crash
  diagnosis runs _reconnectTask after probing has-session. 30s confirm
  window before marking a download "done" — kills the Finished/Downloading
  flicker when tmux briefly drops between captures.
- Mobile UX: tap anywhere on a note card body opens the editor;
  Update button morphs to Archive when no text was edited; bell icon
  accent-colored; chip-trashing notif pills fade so only the icon
  rotates into the trash zone.
- Settings integrations: SVG-per-provider in email + API preset
  dropdowns, custom drop-up-aware menus, accent sub-header icons
  (IMAP/SMTP), consistent card styling between list + edit, contacts
  Edit/Delete icons, agent form description copy.

static/js/modalManager.js

@@ -938,6 +938,7 @@ function _wireChipDrag(chip, dock) {
           if (tz) {
             const dx = (tz.left + tz.width / 2) - (l.x + l.width / 2);
             const dy = (tz.top + tz.height / 2) - (l.y + l.height / 2);
+            l.chip.classList.add('chip-trashing');
             l.chip.style.transition = 'transform 0.32s cubic-bezier(0.45, 0, 0.25, 1), opacity 0.3s ease-in, left 0.32s cubic-bezier(0.45, 0, 0.25, 1), top 0.32s cubic-bezier(0.45, 0, 0.25, 1)';
             // Whirlpool: spin + shrink so the chip swirls into the X.
             l.chip.style.transform = 'scale(0.15) rotate(720deg)';
@@ -1001,6 +1002,7 @@ function _wireChipDrag(chip, dock) {
         // `!important`, so the close animation needs setProperty(...important)
         // too or the styles don't apply and the chip just snaps.
         const cur = chip.style.transform || 'translate(0,0)';
+        chip.classList.add('chip-trashing');
         chip.style.setProperty('transition', 'transform 0.32s cubic-bezier(0.45, 0, 0.25, 1), opacity 0.3s ease-in', 'important');
         // Whirlpool: spin + shrink as the chip swirls into the X.
         chip.style.setProperty('transform', `${cur} scale(0.15) rotate(720deg)`, 'important');