feat: import VPC plant by pasting URL directly in search

slug_from_query() detects VPC URLs and bare slugs (must contain a hyphen
to avoid treating single search words as slugs). When matched, the search
bypasses the keyword search and shows the plant directly as a VPC result.
Updated search hint text to make this discoverable.

Fixes: VPC search by English name (e.g. "crowfoot") is a VPC limitation —
their search only indexes Latin titles, not custom fields like Engelse naam.
The URL paste workflow is the reliable workaround.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

plants/services/vpc.py

@@ -76,6 +76,20 @@ def _slug_from_url(url):
     return m.group(1) if m else ''
 
 
+def slug_from_query(query):
+    """Return a VPC slug if query is a VPC URL or bare slug, else empty string."""
+    query = query.strip()
+    # Full URL containing /soorten/
+    slug = _slug_from_url(query)
+    if slug:
+        return slug
+    # Bare slug: lowercase, hyphens, no spaces, must contain at least one hyphen
+    # (single words are normal search terms, not slugs)
+    if re.fullmatch(r'[a-z0-9][a-z0-9\-]+', query) and '-' in query:
+        return query
+    return ''
+
+
 def search_species(query):
     """
     Search VPC and return up to 8 result dicts:

plants/templates/plants/species_search.html

@@ -2,7 +2,7 @@
 {% block title %}Add Plant — PlantDB{% endblock %}
 {% block content %}
 <h5 class="mb-3">Add a plant</h5>
-<p class="text-muted small">Search for the species to auto-fill care info, or skip to enter details manually.</p>
+<p class="text-muted small">Search by name, or paste a VPC URL to import a specific plant directly.</p>
 
 <div class="input-group mb-2">
     <input

plants/views/species.py

@@ -21,6 +21,13 @@ def species_search(request):
     error = None
 
     if len(q) >= 2:
+        # If the query looks like a VPC URL or slug, skip the search and show
+        # it directly as a single importable result.
+        vpc_slug = vpc_service.slug_from_query(q)
+        if vpc_slug:
+            vpc_results = [{'slug': vpc_slug, 'common_name': vpc_slug.replace('-', ' ').title(),
+                            'scientific_name': '', 'thumbnail_url': '', 'source': 'vpc'}]
+        else:
             def _run_perenual():
                 try:
                     return perenual_search(q), None