Fix bucket-404 on empty resources, redesign review actions as select-then-confirm, CSS polish

get_resource's Kv path treated a not-yet-created bucket (nothing
submitted there yet) as a hard error instead of an empty list -
projects bucket never got created since the backfill found nothing to
migrate, so /review's Projects alternative 404'd outright. Now matches
store_answer's own "doesn't exist yet is normal" posture; a specific
key request still errors, only listing degrades gracefully.

AnswerRow's Invite/Decline buttons fired transition_answer immediately
on click, with no staging step and no visible confirmation once it
landed (the resource list never refetched, so a click barely looked
like it did anything). Redesigned as toggle-select (reusing the
.select-option pattern from the resource-backed select requirement)
plus one explicit Confirm button; a successful transition now refetches
the parent Resource so the row actually reflects the change.

CSS: soften the hard cut where the hero canvas meets the page
background below it (gradient fade over the last few ems, matching
--paper); center the "Asked by X" responsible note with the em-dash
starting its own line; give it and the report button real styling
(previously unstyled default text).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

style/main.css

@@ -153,6 +153,22 @@ main.loading, main.not-found {
   text-shadow: 0 2px 24px rgba(0, 0, 0, 0.8);
 }
 
+/* Softens the otherwise hard cut where the full-bleed canvas meets the
+   page background right below it - fades to the same --paper color
+   over the last few ems instead of stopping dead. Non-interactive so
+   it never steals clicks meant for the canvas underneath. */
+.hero-yes::after {
+  content: "";
+  position: absolute;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  height: 6em;
+  background: linear-gradient(to bottom, transparent, var(--paper));
+  pointer-events: none;
+  z-index: 1;
+}
+
 /* alternatives */
 
 .alternatives {
@@ -163,6 +179,29 @@ main.loading, main.not-found {
   gap: 1.25rem;
 }
 
+.question-responsible {
+  text-align: center;
+  color: var(--ink-dim);
+  font-size: 0.85rem;
+  line-height: 1.6;
+}
+
+.question-responsible a { color: var(--ink-dim); }
+.question-responsible a:hover { color: var(--accent); }
+
+.question-report {
+  font: inherit;
+  color: var(--ink-dim);
+  background: none;
+  border: none;
+  padding: 0;
+  text-decoration: underline;
+  cursor: pointer;
+}
+
+.question-report:hover { color: var(--accent); }
+.question-report:disabled { opacity: 0.5; cursor: wait; }
+
 .alt-card {
   background: var(--paper-raised);
   border: 1px solid var(--line);
@@ -364,23 +403,28 @@ input:focus, textarea:focus {
   color: var(--accent);
 }
 
-.answer-actions { display: flex; gap: 0.6rem; }
+.answer-actions {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 0.6rem;
+}
 
-.answer-action {
+.answer-confirm {
   font-family: var(--sans);
   font-weight: 600;
   font-size: 0.82rem;
-  color: var(--ink);
-  background: var(--paper);
-  border: 1px solid var(--line);
+  color: #0a0a0a;
+  background: var(--accent);
+  border: none;
   border-radius: 0.5rem;
-  padding: 0.4rem 0.8rem;
+  padding: 0.45rem 1rem;
   cursor: pointer;
-  transition: border-color 120ms, color 120ms;
+  transition: filter 120ms;
 }
 
-.answer-action:hover { border-color: var(--accent); color: var(--accent); }
-.answer-action:disabled { opacity: 0.5; cursor: wait; }
+.answer-confirm:hover { filter: brightness(1.08); }
+.answer-confirm:disabled { opacity: 0.5; cursor: not-allowed; filter: none; }
 
 .item-list { display: grid; gap: 0.8rem; }