feat(banner): editorial dispatch banner — title + 2-paragraph excerpt + author block

LatestDispatchBanner rebuilt from the three-column horizontal row into
an editorial card that reads as something to engage with, not a
database row.

New layout:
  - Meta row (1fr / auto): tracked 'LATEST DISPATCH · {relative}' +
    kind pill on the left; 'All dispatches →' tracked link on the right.
  - 30px serif headline beneath, max-width 720px so a real title can
    breathe across two lines if needed.
  - Body grid (1fr / auto): the prose on the left, an author block on
    the right. Prose splits into two paragraphs — p1 in primary text,
    p2 in muted (--on-surface-variant) ending in an ellipsis if the
    source extends beyond what was rendered. Author block has a small
    'Jonathan / team' stack alongside a 36px serif italic initial in
    an ink-coloured circle, plus a terracotta 'Read full dispatch →'
    CTA with a 1px terracotta bottom border.

Kind pills get per-kind tinted backgrounds (decision → indigo, update
→ copper, behind_the_scenes → walnut, note → terracotta) matching the
established kind-pigment mapping.

splitExcerpt helper added to src/lib/format.ts:
  - Prefers a markdown \\n\\n paragraph break (admin-controllable);
  - Falls back to the first sentence boundary past character 120;
  - Returns [first, null] when no good split exists — banner renders
    just p1 in that case and skips p2 entirely.

Admin: the excerpt field on /admin?tab=dispatches grows from a
single-line input to a 4-row textarea with the spec'd helper text
nudging admins to write 2-4 sentences with a blank-line break.

Seed: the decision dispatch's excerpt rewritten as the spec's
two-paragraph block so the new layout has real content to render.
Body stays unchanged.

Mobile: the body collapses to single-column; the author block jumps
above the prose with order: -1, so the byline reads first on small
screens and the text flows freely below it.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/seed-demo.js

@@ -247,7 +247,9 @@ for (const c of contribs) {
 const dispatchSeed = [
   { kind: 'decision',          ageDays: 2,
     title: 'We are deprioritising public-cloud parity for Q3',
-    excerpt: 'After three weeks of pilot feedback, the team is locking the platform to on-prem and Hetzner sovereign cloud for the next quarter.',
+    excerpt: `After three weeks of pilot feedback — the kind of feedback that only happens when people are actually trying to deploy this thing — we are deprioritising public-cloud parity for Q3.
+
+The signal was unambiguous. Every council member we spoke to in May has the same constraint: the data cannot leave their network. AWS, Azure, GCP are non-starters not because of price but because of jurisdiction. So for Q3 the platform supports two deployment targets only — on-prem inside the customer's own VPC, and our Hetzner sovereign cloud in Helsinki.`,
     body: `After three weeks of pilot feedback — the kind of feedback that only happens when people are actually trying to deploy this thing — we are deprioritising public-cloud parity for Q3.
 
 The signal was unambiguous. Every council member we spoke to in May has the same constraint: the data cannot leave their network. AWS, Azure, GCP are non-starters not because of price but because of jurisdiction.

src/components/LatestDispatchBanner.astro

@@ -1,147 +1,208 @@
 ---
-import Avatar from './Avatar.astro';
 import { getLatestPublishedDispatches } from '../lib/db';
 import {
-  dispatchSlug, dispatchExcerptParas, relativeTime,
-  dispatchKindLabel, dispatchKindPigment,
+  dispatchSlug, dispatchKindLabel, splitExcerpt, relativeTime,
 } from '../lib/format';
 
 const [latest] = getLatestPublishedDispatches(1);
-const excerpt = latest ? dispatchExcerptParas(latest).lead : '';
+
+const [p1, p2] = latest
+  ? splitExcerpt(latest.excerpt || latest.body)
+  : ['', null];
+
+// Mark p2 with an ellipsis when the source extends beyond what we used —
+// i.e. the body is longer than excerpt + paragraph break.
+const sourceLen = latest ? (latest.excerpt || latest.body).trim().length : 0;
+const usedLen   = p1.length + (p2 ? p2.length + 2 : 0);
+const truncated = sourceLen > usedLen + 4;
+
+const authorFirstName = latest ? latest.author_name.split(' ')[0] : '';
+const authorInitial   = authorFirstName ? authorFirstName[0].toUpperCase() : '';
+const authorRole      = latest?.author_title ?? 'team';
 ---
 {latest && (
-  <a href={`/dispatches/${dispatchSlug(latest)}`} class="banner">
-    <div class="b-left">
-      <Avatar id={latest.author_id} name={latest.author_name} size={30} />
-      <div class="b-byline">
-        <span class="b-eyebrow">Latest dispatch · {relativeTime(latest.published_at ?? latest.created_at)}</span>
-        <span class="b-author">
-          {latest.author_name.split(' ')[0]} · {latest.author_title ?? 'team'}
-        </span>
-      </div>
-    </div>
+  <div class="rr-dispatch">
 
-    <div class="b-mid">
-      <div class="b-title-row">
-        <span class="b-title">{latest.title}</span>
-        <span class="b-kind-pill" style={`--pill: ${dispatchKindPigment(latest.kind)}`}>
+    <div class="rr-dispatch-meta">
+      <div class="rr-dispatch-meta-left">
+        <span class="rr-dispatch-eyebrow">
+          Latest dispatch · {relativeTime(latest.published_at ?? latest.created_at)}
+        </span>
+        <span class:list={['rr-dispatch-kind', `rr-dispatch-kind-${latest.kind}`]}>
           {dispatchKindLabel(latest.kind)}
         </span>
       </div>
-      <span class="b-excerpt">{excerpt}</span>
+      <a class="rr-dispatch-all" href="/dispatches">All dispatches →</a>
     </div>
 
-    <div class="b-right">
-      <span class="b-read">Read dispatch</span>
-      <span class="b-all">All dispatches →</span>
+    <h2 class="rr-dispatch-title">{latest.title}</h2>
+
+    <div class="rr-dispatch-body">
+      <div class="rr-dispatch-text">
+        <p class="rr-dispatch-p1">{p1}</p>
+        {p2 && (
+          <p class="rr-dispatch-p2">{p2}{truncated ? '…' : ''}</p>
+        )}
+      </div>
+
+      <div class="rr-dispatch-author">
+        <div class="rr-dispatch-author-row">
+          <div class="rr-dispatch-author-text">
+            <p class="rr-dispatch-author-name">{authorFirstName}</p>
+            <p class="rr-dispatch-author-role">{authorRole}</p>
+          </div>
+          <div class="rr-dispatch-author-avatar">{authorInitial}</div>
+        </div>
+        <a class="rr-dispatch-cta" href={`/dispatches/${dispatchSlug(latest)}`}>
+          Read full dispatch →
+        </a>
+      </div>
     </div>
-  </a>
+
+  </div>
 )}
 
 <style>
-  .banner {
-    display: grid;
-    grid-template-columns: auto 1fr auto;
-    gap: 20px;
-    align-items: center;
-    padding: 28px 26px 26px;
+  .rr-dispatch {
     background: var(--surface-card);
     border: 0.5px solid var(--surface-card-border);
-    border-radius: 12px;
-    color: inherit;
-    text-decoration: none;
-    border-bottom: none;
-    transition: background var(--duration-fast) var(--ease-standard),
-                transform var(--duration-fast) var(--ease-standard);
-  }
-  .banner:hover {
-    border-bottom: none;
-    transform: translateY(-1px);
-    background: color-mix(in oklab, var(--surface-card) 92%, var(--background));
+    border-radius: 14px;
+    padding: 36px 40px;
   }
 
-  .b-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
-  .b-byline { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
-  .b-eyebrow {
-    font-family: var(--font-sans);
-    font-size: 9px;
-    letter-spacing: var(--tracking-wider);
-    text-transform: uppercase;
-    color: var(--on-surface-muted);
-    white-space: nowrap;
-  }
-  .b-author {
-    font-size: 11px;
-    color: var(--on-surface);
-    white-space: nowrap;
-  }
-
-  .b-mid { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
-  .b-title-row {
-    display: flex;
+  .rr-dispatch-meta {
+    display: grid;
+    grid-template-columns: 1fr auto;
+    gap: 24px;
     align-items: baseline;
+    margin-bottom: 22px;
+  }
+  .rr-dispatch-meta-left {
+    display: flex;
+    align-items: center;
+    gap: 14px;
     flex-wrap: wrap;
-    gap: 8px;
   }
-  .b-title {
-    font-family: var(--font-serif);
-    font-size: 19px;
-    line-height: 1.3;
-    color: var(--on-surface);
-  }
-  .b-kind-pill {
-    background: color-mix(in oklab, var(--pill) 10%, transparent);
-    color: var(--pill);
-    padding: 2px 8px;
-    border-radius: 3px;
+  .rr-dispatch-eyebrow {
     font-family: var(--font-sans);
-    font-size: 9px;
-    letter-spacing: var(--tracking-wider);
-    font-weight: 600;
+    font-size: 10px;
+    letter-spacing: 1.6px;
     text-transform: uppercase;
-    white-space: nowrap;
-  }
-  .b-excerpt {
-    display: -webkit-box;
-    -webkit-line-clamp: 2;
-    -webkit-box-orient: vertical;
-    overflow: hidden;
-    font-size: 13px;
-    line-height: 1.55;
     color: var(--on-surface-variant);
   }
+  .rr-dispatch-kind {
+    font-family: var(--font-sans);
+    font-size: 9px;
+    letter-spacing: 0.8px;
+    padding: 2px 8px;
+    border-radius: 3px;
+    text-transform: uppercase;
+    font-weight: 500;
+  }
+  .rr-dispatch-kind-decision          { background: rgba(44,58,82,0.10);   color: #2c3a52; }
+  .rr-dispatch-kind-update            { background: rgba(109,140,124,0.12);color: #6d8c7c; }
+  .rr-dispatch-kind-behind_the_scenes { background: rgba(120,95,83,0.12);  color: #785f53; }
+  .rr-dispatch-kind-note              { background: rgba(185,107,88,0.10); color: #b96b58; }
 
-  .b-right {
+  .rr-dispatch-all {
+    font-family: var(--font-sans);
+    font-size: 11px;
+    letter-spacing: 1px;
+    color: var(--on-surface-variant);
+    text-transform: uppercase;
+    text-decoration: none;
+    border-bottom: none;
+  }
+  .rr-dispatch-all:hover { color: var(--on-surface); border-bottom: none; }
+
+  .rr-dispatch-title {
+    font-family: var(--font-serif);
+    font-size: 30px;
+    line-height: 1.2;
+    color: var(--on-surface);
+    margin: 0 0 22px;
+    max-width: 720px;
+  }
+
+  .rr-dispatch-body {
+    display: grid;
+    grid-template-columns: 1fr auto;
+    gap: 40px;
+    align-items: end;
+  }
+  .rr-dispatch-text { max-width: 720px; }
+  .rr-dispatch-p1 {
+    font-size: 14px;
+    line-height: 1.7;
+    color: var(--on-surface);
+    margin: 0 0 10px;
+  }
+  .rr-dispatch-p2 {
+    font-size: 14px;
+    line-height: 1.7;
+    color: var(--on-surface-variant);
+    margin: 0;
+  }
+
+  .rr-dispatch-author {
     display: flex;
     flex-direction: column;
     align-items: flex-end;
-    gap: 4px;
-    white-space: nowrap;
+    gap: 14px;
+    padding-bottom: 4px;
   }
-  .b-read {
+  .rr-dispatch-author-row {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+  }
+  .rr-dispatch-author-text { text-align: right; }
+  .rr-dispatch-author-name {
+    font-size: 13px;
+    margin: 0;
+    color: var(--on-surface);
+  }
+  .rr-dispatch-author-role {
+    font-size: 11px;
+    margin: 1px 0 0;
+    color: var(--on-surface-variant);
+  }
+  .rr-dispatch-author-avatar {
+    width: 36px;
+    height: 36px;
+    border-radius: 50%;
+    background: var(--ink);
+    color: #fffcf7;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-family: var(--font-serif);
+    font-style: italic;
+    font-size: 14px;
+    flex-shrink: 0;
+  }
+  .rr-dispatch-cta {
     font-family: var(--font-sans);
     font-size: 11px;
-    letter-spacing: var(--tracking-wider);
-    text-transform: uppercase;
+    letter-spacing: 1.2px;
     color: var(--pigment-terracotta);
-    border-bottom: 1px solid var(--pigment-terracotta);
-    padding-bottom: 1px;
-  }
-  .b-all {
-    font-family: var(--font-sans);
-    font-size: 10px;
-    letter-spacing: var(--tracking-wider);
     text-transform: uppercase;
-    color: var(--on-surface-muted);
+    text-decoration: none;
+    padding-bottom: 2px;
+    border-bottom: 1px solid var(--pigment-terracotta);
+    white-space: nowrap;
   }
+  .rr-dispatch-cta:hover { opacity: 0.78; }
 
   @media (max-width: 767px) {
-    .banner {
-      grid-template-columns: 1fr;
-      gap: 12px;
-      padding: 18px 20px;
+    .rr-dispatch { padding: 28px 24px; }
+    .rr-dispatch-title { font-size: 24px; }
+    .rr-dispatch-body { grid-template-columns: 1fr; gap: 22px; }
+    .rr-dispatch-author {
+      flex-direction: row;
+      justify-content: space-between;
+      align-items: center;
+      order: -1;
     }
-    .b-excerpt { white-space: normal; }
-    .b-right { align-items: flex-start; }
   }
 </style>

src/components/admin/DispatchesTab.astro

@@ -66,8 +66,9 @@ const defaultAuthorId = editing?.author_id ?? currentUserId;
       </div>
 
       <div class="field">
-        <label for="d-excerpt" class="label-sm field-label">Excerpt (optional — falls back to first ~200 chars of body)</label>
-        <input type="text" id="d-excerpt" name="excerpt" class="input body-md" value={editing?.excerpt ?? ''} />
+        <label for="d-excerpt" class="label-sm field-label">Excerpt (optional)</label>
+        <textarea id="d-excerpt" name="excerpt" class="input body-md" rows="4">{editing?.excerpt ?? ''}</textarea>
+        <span class="body-sm muted">Write 2–4 sentences. The first sentence becomes the lead paragraph on the /roadmap dispatch banner; the rest follows in muted text. Use a blank line to control the paragraph break. Falls back to the first ~200 chars of the body if empty.</span>
       </div>
 
       <div class="field">