fix(trips): remaining publish-toggle review findings

- resolveTripChild now asserts the resolved page uses the trip template, so a
  non-trip direct child of /trips could never be toggled through this endpoint
  (P3 adversarial).
- apiSend gains an optional timeoutMs (AbortController); trip-publish passes 10s
  so a hung toggle can't leave the switch stuck aria-busy. post-form omits it,
  keeping media uploads unbounded (P2 reliability).
- trips.html.twig reuses trip.html.twig's one-line active-trip slug match
  instead of a bespoke 3-branch OR (P2 maintainability).
- Draft-badge amber is now a --color-draft-accent token shared by the trip and
  journal badges instead of a twice-hardcoded #E0A458 literal (P3).

Rebuilt js/trip-publish.js and js/post/post-form.js (shared api-utils change).
PHP lint clean; trip-publish suite 10/10; post suite unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Mpdu3Dt1iVoozHwAMyjrbn

themes/intotheeast/js/src/trip-publish.js

@@ -19,6 +19,7 @@
 import { apiSend, apiErrorMsg } from './api-utils.js';
 
 var TOAST_TIMEOUT_MS = 5000;
+var PUBLISH_TIMEOUT_MS = 10000; // abort a hung toggle so the switch never sticks (R13)
 var toastTimer = null;
 
 // One visible, page-level polite toast (R15). Modelled on the feed-actions.js
@@ -103,7 +104,7 @@ function onToggle(btn) {
         method: 'POST',
         headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
         body: JSON.stringify({ published: next })
-    }).then(function () {
+    }, null, PUBLISH_TIMEOUT_MS).then(function () {
         // Success: flip the switch + Draft badge in place, no reload (R14).
         setPublishedUI(btn, next);
         setPending(btn, false);