feat(company-edit): add year_established field to profile edit form

Allows company managers to set or correct the founding year. Field is
read-only when the year comes from KRS/CEIDG registry data.

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

blueprints/public/routes_company_edit.py

@@ -212,6 +212,19 @@ def _save_description(db, company):
         request.form.get('core_values', '')
     ) or None
 
+    # Year established — only save if not from registry
+    if not company.krs_registration_date and not company.business_start_date:
+        year_raw = request.form.get('year_established', '').strip()
+        if year_raw:
+            try:
+                year = int(year_raw)
+                if 1800 <= year <= 2030:
+                    company.year_established = year
+            except ValueError:
+                pass
+        else:
+            company.year_established = None
+
     category_id_raw = request.form.get('category_id', '')
     if category_id_raw:
         try:

templates/company_edit.html

@@ -780,6 +780,19 @@
                         <p class="form-help">Główna kategoria widoczna przy nazwie firmy w katalogu</p>
                     </div>
 
+                    <div class="form-group">
+                        <label for="year_established" class="form-label">Rok założenia firmy</label>
+                        <input type="number" id="year_established" name="year_established" class="form-input" style="max-width: 200px;"
+                               min="1800" max="2030" placeholder="np. 2015"
+                               value="{{ company.year_established or '' }}"
+                               {% if company.krs_registration_date or company.business_start_date %}readonly{% endif %}>
+                        {% if company.krs_registration_date or company.business_start_date %}
+                        <p class="form-help">Rok pochodzi z rejestru {% if company.krs_registration_date %}KRS{% else %}CEIDG{% endif %} — aby zmienić, skontaktuj się z administratorem</p>
+                        {% else %}
+                        <p class="form-help">Rok rozpoczęcia działalności firmy</p>
+                        {% endif %}
+                    </div>
+
                     <div class="form-group">
                         <label for="description_short" class="form-label">Krótki opis firmy</label>
                         <textarea id="description_short" name="description_short" class="form-input" rows="3" maxlength="500" placeholder="Np. Specjalizujemy się w usługach IT dla firm z Pomorza...">{{ company.description_short or '' }}</textarea>