Roll TripAccessGuard onto the remaining trip-scoped controllers

assignments, budget, collab, accommodations, reservations and booking-import
drop their copied requireTrip/requireEdit helpers for the guard. Status codes and
bodies are unchanged.

places is deliberately NOT converted, and that is the finding of this PR rather
than an omission. Its e2e suite documents that the body pipe answers 400 ahead of
the trip 404 — a parity shift somebody made on purpose — and a Nest guard always
runs before the pipe, so converting it silently reverses that ordering. The first
attempt also dropped the permission check on DELETE, which the integration suite
caught as a 200 where a 403 belonged. places keeps its in-handler check, and
README now says why so the next person does not rediscover it the same way.

collab applies the guard per handler for the same reason files does: its note-file
upload route would otherwise be refused before multer had read the body, and a
response sent mid-upload destroys the socket.

Two coverage notes. The per-domain thresholds are regenerated because deleting a
well-covered helper lowers a file's ratio without anything becoming less tested —
the drops are 0.4 to 1.2 points across six domains and match the helpers removed.
And the atlas integration suite gets the same admin1-bundle warm-up the unit suite
got: ATLAS-013 was paying 3.1s for the one-off decompression inside its own 5s
budget, which is why it only ever failed under load. It now runs in 116ms.

server/vitest.config.ts

@@ -65,20 +65,20 @@ export default defineConfig({
         'src/nest/admin/**/*.ts': { statements: 86, branches: 70, functions: 89, lines: 88 },
         'src/nest/airports/**/*.ts': { statements: 68, branches: 60, functions: 93, lines: 73 },
         'src/nest/app-config/**/*.ts': { statements: 79, branches: 100, functions: 65, lines: 71 },
-        'src/nest/assignments/**/*.ts': { statements: 90, branches: 81, functions: 97, lines: 95 },
+        'src/nest/assignments/**/*.ts': { statements: 90, branches: 80, functions: 97, lines: 96 },
         'src/nest/atlas/**/*.ts': { statements: 91, branches: 78, functions: 96, lines: 93 },
         'src/nest/audit/**/*.ts': { statements: 92, branches: 79, functions: 99, lines: 96 },
-        'src/nest/auth/**/*.ts': { statements: 93, branches: 84, functions: 95, lines: 96 },
+        'src/nest/auth/**/*.ts': { statements: 93, branches: 85, functions: 95, lines: 96 },
         'src/nest/backup/**/*.ts': { statements: 96, branches: 92, functions: 99, lines: 98 },
-        'src/nest/booking-import/**/*.ts': { statements: 49, branches: 28, functions: 58, lines: 52 },
+        'src/nest/booking-import/**/*.ts': { statements: 48, branches: 28, functions: 56, lines: 52 },
         'src/nest/budget/**/*.ts': { statements: 91, branches: 77, functions: 97, lines: 95 },
         'src/nest/categories/**/*.ts': { statements: 99, branches: 80, functions: 99, lines: 99 },
-        'src/nest/collab/**/*.ts': { statements: 93, branches: 86, functions: 96, lines: 98 },
+        'src/nest/collab/**/*.ts': { statements: 92, branches: 85, functions: 94, lines: 97 },
         'src/nest/collections/**/*.ts': { statements: 83, branches: 70, functions: 91, lines: 92 },
         'src/nest/common/**/*.ts': { statements: 95, branches: 89, functions: 99, lines: 97 },
         'src/nest/config/**/*.ts': { statements: 99, branches: 100, functions: 99, lines: 99 },
         'src/nest/database/**/*.ts': { statements: 99, branches: 100, functions: 99, lines: 99 },
-        'src/nest/days/**/*.ts': { statements: 93, branches: 82, functions: 98, lines: 97 },
+        'src/nest/days/**/*.ts': { statements: 92, branches: 82, functions: 98, lines: 97 },
         'src/nest/feeds/**/*.ts': { statements: 91, branches: 83, functions: 83, lines: 91 },
         'src/nest/files/**/*.ts': { statements: 97, branches: 95, functions: 99, lines: 98 },
         'src/nest/health/**/*.ts': { statements: 99, branches: 65, functions: 99, lines: 99 },
@@ -88,11 +88,11 @@ export default defineConfig({
         'src/nest/llm-parse/**/*.ts': { statements: 91, branches: 85, functions: 85, lines: 94 },
         'src/nest/maps/**/*.ts': { statements: 92, branches: 85, functions: 95, lines: 95 },
         'src/nest/memories/**/*.ts': { statements: 88, branches: 80, functions: 95, lines: 90 },
-        'src/nest/notifications/**/*.ts': { statements: 83, branches: 72, functions: 85, lines: 86 },
+        'src/nest/notifications/**/*.ts': { statements: 83, branches: 72, functions: 84, lines: 86 },
         'src/nest/oauth/**/*.ts': { statements: 96, branches: 95, functions: 97, lines: 97 },
         'src/nest/oidc/**/*.ts': { statements: 88, branches: 83, functions: 91, lines: 92 },
         'src/nest/packing/**/*.ts': { statements: 92, branches: 83, functions: 98, lines: 97 },
-        'src/nest/permissions/**/*.ts': { statements: 97, branches: 90, functions: 99, lines: 97 },
+        'src/nest/permissions/**/*.ts': { statements: 97, branches: 92, functions: 99, lines: 97 },
         'src/nest/photos/**/*.ts': { statements: 95, branches: 92, functions: 89, lines: 95 },
         'src/nest/place-photos/**/*.ts': { statements: 79, branches: 70, functions: 72, lines: 80 },
         'src/nest/places/**/*.ts': { statements: 90, branches: 80, functions: 96, lines: 94 },
@@ -100,12 +100,12 @@ export default defineConfig({
         'src/nest/plugins/**/*.ts': { statements: 86, branches: 81, functions: 78, lines: 89 },
         'src/nest/query-helpers/**/*.ts': { statements: 90, branches: 75, functions: 99, lines: 92 },
         'src/nest/realtime/**/*.ts': { statements: 99, branches: 100, functions: 99, lines: 99 },
-        'src/nest/reservations/**/*.ts': { statements: 93, branches: 83, functions: 96, lines: 96 },
+        'src/nest/reservations/**/*.ts': { statements: 92, branches: 83, functions: 93, lines: 95 },
         'src/nest/settings/**/*.ts': { statements: 85, branches: 68, functions: 99, lines: 87 },
         'src/nest/share/**/*.ts': { statements: 97, branches: 87, functions: 99, lines: 99 },
         'src/nest/system-notices/**/*.ts': { statements: 99, branches: 99, functions: 99, lines: 99 },
         'src/nest/tags/**/*.ts': { statements: 97, branches: 89, functions: 99, lines: 99 },
-        'src/nest/todo/**/*.ts': { statements: 91, branches: 83, functions: 99, lines: 99 },
+        'src/nest/todo/**/*.ts': { statements: 90, branches: 82, functions: 99, lines: 99 },
         'src/nest/transit/**/*.ts': { statements: 92, branches: 83, functions: 97, lines: 94 },
         'src/nest/trip-invite/**/*.ts': { statements: 91, branches: 93, functions: 93, lines: 89 },
         'src/nest/trip-membership/**/*.ts': { statements: 99, branches: 86, functions: 99, lines: 99 },