feat(post-form): U4 — Draft badge + owner Edit/Delete controls on cards

Render on each journal card, gated by owner_can_edit (R1/R3/R5/R6, KTD8):
- Draft badge (amber) when the entry is unpublished.
- Edit link -> /post?edit=<route>&return=<feed-url> (D5: a save from the home
  feed returns to home, not always the trip page); feed_return_url threaded from
  trip.html.twig/home.html.twig (page.url).
- Delete control with inline Cancel/Confirm button-swap (no browser dialog),
  data-entry-route carried for U6's delete JS, plus an aria-live status slot.
- 44x44px min tap targets (D8); titlerow wraps on narrow phones.

Verified on the container: anon sees no controls/badge; owner sees Edit+Delete on
all 13 cards with a Draft badge on the unpublished one; a non-owner authenticated
session (testrunner vs owner mischa) sees none and no drafts (V5). Browser
screenshot verification unavailable (no local Playwright); did a code-level
layout review instead.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H1FrCYNq6RXdGYbn5PFrhM

themes/intotheeast/templates/trip.html.twig

@@ -93,7 +93,8 @@
         gpx_urls: gpx_urls,
         gps_points: gps_points,
         show_sort: true,
-        owner_can_edit: owner_can_edit
+        owner_can_edit: owner_can_edit,
+        feed_return_url: page.url
     } only %}
 </div>