feat: v0.6.5 — edit page polish, universal delete, widget modal, refr…

[crzykidd]

Summary

Third and final release in the "UI overhaul, part 2" arc. Five pieces of
work, all landing together:

• Universal delete popover. New inline popover replaces the old
  confirm()/prompt() dialogs and the typed-name Danger Zone form. All
  delete entry points (drawer button, tile trash icon, row trash icon, edit
  page button) use the same component. Backed by a new JSON endpoint
  POST /api/v1/entries/<id>/delete so tile/row deletes don't require a
  full page reload.

• Trash + lock icons on Tiled tiles and Dashboard rows. Dynamic entries
  get a trash icon in the action row (muted by default, red on hover). Static
  (Locked) entries get a lock icon in the same slot — passive, non-clickable,
  signals "delete from edit page only." Replaces the 🔒 emoji on Dashboard
  rows. Drawer Delete button hidden for static entries.

• Edit page form polish. Four section headings (Identity / URLs & Health /
  Grouping & Display / Widget), tighter input padding and border-radius, URL
  fields now group their health-check checkbox directly below the input,
  helper text muted and italicized, group selector replaced with a tab-style
  toggle (pure CSS, underlying radios unchanged so toggleGroupMode JS is
  untouched). Danger Zone section removed; single Delete button at the bottom
  uses the new popover.

• Widget data modal. Chart icon on Tiled tiles is now a <button>. Click
  opens a modal populated from the already-server-rendered widget cards inside
  the tile's (hidden) drawer — no new API endpoint, no new template rendering.
  Responsive card grid: 3-col desktop → 2-col ≤480px → 1-col ≤360px.

• Auto-refresh pauses while interacting. New isInteracting() checks for
  any open tile drawer, widget modal, delete popover, or changelog modal. While
  true, the refresh tick skips the reload and shows "Refresh paused (drawer
  open)." Timer resets to 0 on close so the next cycle starts fresh.