Add Verisoo attest/verify web MVP — full attestation lifecycle

Attest page (/attest):
- Image upload with optional caption and location
- EXIF auto-extraction toggle
- Creates Ed25519-signed attestation record
- Stores in verisoo append-only binary log + LMDB index
- Displays: record ID, attestor fingerprint, timestamp, image hashes

Verify page (/verify):
- Image upload for verification against local attestation log
- SHA-256 exact matching + perceptual hash matching (pHash, dHash)
- Shows match type (exact/perceptual), hash distances, attestor info
- Color-coded distance badges (green=0, info<5, warning<10, danger>=10)

Attestation log (/attest/log):
- Lists recent attestations with short ID, attestor, timestamp, SHA-256
- Shows total record count

Verified: full lifecycle works — attest image → verify same image → exact match found

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontends/web/templates/attest/verify.html

@@ -1,12 +1,33 @@
 {% extends "base.html" %}
-{% block title %}Verify — SooSeF{% endblock %}
+{% block title %}Verify Image — SooSeF{% endblock %}
+
 {% block content %}
-<h2><i class="bi bi-search me-2"></i>Verify Image</h2>
-<p class="text-muted">Check an image against attestation records using multi-algorithm hash matching.</p>
-<div class="alert alert-info">
-    <i class="bi bi-info-circle me-2"></i>
-    Verisoo verification UI. Upload an image to check against the attestation log.
-    Uses SHA-256 (exact) and perceptual hashes (pHash, dHash, aHash) for robustness
-    against compression and resizing.
+<div class="row justify-content-center">
+    <div class="col-lg-8">
+        <div class="card bg-dark border-secondary">
+            <div class="card-header">
+                <h5 class="mb-0"><i class="bi bi-search me-2 text-info"></i>Verify Image</h5>
+            </div>
+            <div class="card-body">
+                <p class="text-muted">
+                    Check an image against the local attestation log. Uses SHA-256 for exact matching
+                    and perceptual hashes (pHash, dHash) for robustness against compression and resizing.
+                </p>
+
+                <form method="POST" enctype="multipart/form-data">
+                    <div class="mb-4">
+                        <label for="image" class="form-label"><i class="bi bi-image me-1"></i>Image to Verify</label>
+                        <input type="file" class="form-control" name="image" id="image"
+                               accept="image/png,image/jpeg,image/webp,image/tiff,image/bmp" required>
+                        <div class="form-text">Upload the image you want to verify against known attestations.</div>
+                    </div>
+
+                    <button type="submit" class="btn btn-info btn-lg w-100">
+                        <i class="bi bi-search me-2"></i>Verify Image
+                    </button>
+                </form>
+            </div>
+        </div>
+    </div>
 </div>
 {% endblock %}