feat: improve memo editing workflow

frontend/src/memo.css

@@ -1,3 +1,3 @@
-.memo-panel{position:relative;min-height:calc(100vh - 130px)}.memo-panel__main{display:grid;gap:14px}.memo-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.memo-scope{display:flex;gap:4px;padding:3px;border:1px solid var(--border-cream);border-radius:12px;background:var(--surface-raised)}.memo-scope button{min-height:44px;display:inline-flex;align-items:center;gap:6px;border:0;border-radius:9px;background:transparent;padding:0 13px}.memo-scope button[aria-selected="true"]{background:var(--accent-soft);color:#b7421e;font-weight:700}.memo-search{height:44px;min-width:min(320px,45%);display:flex;align-items:center;gap:8px;border:1px solid var(--border-cream);border-radius:11px;background:var(--surface-raised);padding:0 12px}.memo-search input{min-width:0;width:100%;border:0;outline:0;background:transparent;box-shadow:none}.memo-list{display:grid;gap:0;border:1px solid var(--border-cream);border-radius:var(--radius-list);background:var(--surface-raised);overflow:hidden}.memo-list.refreshing{opacity:.62}.memo-row{width:100%;min-height:76px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;border:0;background:var(--surface-raised);padding:12px 15px;text-align:left}.memo-row+.memo-row{border-top:1px solid var(--border-cream)}.memo-row:hover,.memo-row.active{background:#fff7eb}.memo-row strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.memo-row__excerpt{grid-column:1;display:-webkit-box;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical;color:var(--text-secondary);font-size:12px;line-height:1.45;white-space:normal}.memo-row time{grid-column:2;grid-row:1/3;align-self:center;color:var(--muted);font-size:11px}.memo-state{min-height:240px;display:grid;place-items:center;align-content:center;gap:9px;color:var(--muted);text-align:center}.memo-state svg{width:30px;height:30px;color:var(--accent)}.memo-load-more{justify-self:center;min-width:132px;min-height:44px}.memo-error,.memo-editor__error{color:var(--danger);background:#fff0ec;border-radius:10px;padding:10px 12px}.memo-editor{width:350px;position:fixed;z-index:42;right:0;top:0;bottom:0;display:flex;flex-direction:column;border-left:1px solid var(--border-cream);background:var(--surface-raised);box-shadow:var(--shadow-raised)}.memo-editor>header,.memo-editor>footer{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 16px;border-bottom:1px solid var(--border-cream)}.memo-editor>header span{font-size:12px;font-weight:750;letter-spacing:.06em;color:var(--muted)}.memo-editor>header button{width:44px;height:44px;display:grid;place-items:center;border:0;border-radius:10px;background:transparent}.memo-editor__fields{flex:1;min-height:0;overflow:auto;display:grid;align-content:start;gap:14px;padding:18px}.memo-editor__fields label{display:grid;gap:7px;color:var(--text-secondary);font-size:12px;font-weight:700}.memo-editor__fields input,.memo-editor__fields textarea{width:100%;border:1px solid var(--border-cream);border-radius:11px;background:#fff;padding:12px;outline:0}.memo-editor__fields textarea{resize:vertical;line-height:1.65}.memo-editor__fields input:focus,.memo-editor__fields textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--focus-ring)}.memo-editor>footer{border-top:1px solid var(--border-cream);border-bottom:0}.memo-editor>footer button{min-height:44px}.memo-editor-scrim{display:none}
-@media(max-width:930px){.memo-panel{min-height:calc(100dvh - 150px)}.memo-toolbar{align-items:stretch;flex-direction:column}.memo-search{width:100%;min-width:0}.memo-row{min-height:76px}.memo-editor-scrim{display:block;position:fixed;z-index:41;inset:0;background:var(--scrim)}.memo-editor{position:fixed;z-index:42;left:0;right:0;top:auto;bottom:0;width:100%;height:min(92dvh,820px);border:1px solid var(--border-cream);border-bottom:0;border-radius:22px 22px 0 0;transition:transform .22s ease}.memo-editor__fields{padding:16px}.memo-editor>footer{padding-bottom:max(10px,env(safe-area-inset-bottom))}}
+.memo-panel{position:relative;min-height:calc(100vh - 130px)}.shell.memo-detail-open main{padding-right:372px}.memo-panel__main{display:grid;gap:14px}.memo-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.memo-scope{display:flex;gap:4px;padding:3px;border:1px solid var(--border-cream);border-radius:12px;background:var(--surface-raised)}.memo-scope button{min-height:44px;display:inline-flex;align-items:center;gap:6px;border:0;border-radius:9px;background:transparent;padding:0 13px}.memo-scope button[aria-selected="true"]{background:var(--accent-soft);color:#b7421e;font-weight:700}.memo-search{height:44px;min-width:min(320px,45%);display:flex;align-items:center;gap:8px;border:1px solid var(--border-cream);border-radius:11px;background:var(--surface-raised);padding:0 12px}.memo-search input{min-width:0;width:100%;border:0;outline:0;background:transparent;box-shadow:none}.memo-list{display:grid;gap:0;border:1px solid var(--border-cream);border-radius:var(--radius-list);background:var(--surface-raised);overflow:hidden}.memo-list.refreshing{opacity:.62}.memo-row{width:100%;min-height:76px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;border:0;background:var(--surface-raised);padding:12px 15px;text-align:left}.memo-row+.memo-row{border-top:1px solid var(--border-cream)}.memo-row:hover,.memo-row.active{background:#fff7eb}.memo-row strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.memo-row__excerpt{grid-column:1;display:-webkit-box;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical;color:var(--text-secondary);font-size:12px;line-height:1.45;white-space:normal}.memo-row time{grid-column:2;grid-row:1/3;align-self:center;color:var(--muted);font-size:11px}.memo-state{min-height:240px;display:grid;place-items:center;align-content:center;gap:9px;color:var(--muted);text-align:center}.memo-state svg{width:30px;height:30px;color:var(--accent)}.memo-load-more{justify-self:center;min-width:132px;min-height:44px}.memo-error,.memo-editor__error{color:var(--danger);background:#fff0ec;border-radius:10px;padding:10px 12px}.memo-editor{width:350px;position:fixed;z-index:42;right:0;top:0;bottom:0;display:flex;flex-direction:column;border-left:1px solid var(--border-cream);background:var(--surface-raised);box-shadow:var(--shadow-raised)}.memo-editor>header,.memo-editor>footer{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 16px;border-bottom:1px solid var(--border-cream)}.memo-editor>header span{font-size:12px;font-weight:750;letter-spacing:.06em;color:var(--muted)}.memo-editor>header button{width:44px;height:44px;display:grid;place-items:center;border:0;border-radius:10px;background:transparent}.memo-editor__fields{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;display:grid;align-content:start;gap:14px;padding:18px}.memo-editor__fields label{display:grid;gap:7px;color:var(--text-secondary);font-size:12px;font-weight:700}.memo-editor__fields input,.memo-editor__fields textarea{width:100%;border:1px solid var(--border-cream);border-radius:11px;background:#fff;padding:12px;outline:0}.memo-editor__fields textarea{resize:vertical;line-height:1.65}.memo-editor__fields input:focus,.memo-editor__fields textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--focus-ring)}.memo-editor>footer{border-top:1px solid var(--border-cream);border-bottom:0}.memo-editor>footer button{min-height:44px}.memo-editor-scrim{display:none}
+@media(max-width:930px){.shell.memo-detail-open main{padding:20px 17px 112px}.memo-panel{min-height:calc(100dvh - 150px)}.memo-toolbar{align-items:stretch;flex-direction:column}.memo-search{width:100%;min-width:0}.memo-row{min-height:76px}.memo-editor-scrim{display:block;position:fixed;z-index:41;inset:0;background:var(--scrim)}.memo-editor{position:fixed;z-index:42;left:0;right:0;top:auto;bottom:0;width:100%;max-width:100%;height:min(92dvh,820px);overflow-x:hidden;border:1px solid var(--border-cream);border-bottom:0;border-radius:22px 22px 0 0;transition:transform .22s ease}.memo-editor__fields{padding:16px}.memo-editor>footer{padding-bottom:max(10px,env(safe-area-inset-bottom))}}
 @media(prefers-reduced-motion:reduce){.memo-editor,.memo-row,.memo-list{transition:none!important}}