feat(registratura): auto-detect {proiect} placeholder in subject and switch to template mode

Typing {proiect}, {nr}, {an}, {detalii} or {text} in the subject field
now auto-transforms to template mode with the appropriate input widgets
(project dropdown, number fields, etc.).

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

src/modules/registratura/components/registry-entry-form.tsx

@@ -27,6 +27,7 @@ import {
   filterSubjects,
   getRecommendedTemplates,
   getSubjectPlaceholder,
+  createDynamicTemplate,
 } from "../services/subject-template-service";
 import type { SubjectTemplate } from "../services/subject-template-service";
 import { SubjectTemplateInput } from "./subject-template-input";
@@ -912,6 +913,7 @@ export function RegistryEntryForm({
                       <li>Contract nr. 15/2026 — Proiect X</li>
                     </ul>
                     <p className="text-muted-foreground">Selecteaza un sablon sau tasteaza liber.</p>
+                    <p className="text-muted-foreground mt-1">Tip: scrie <span className="font-mono text-foreground">{"{proiect}"}</span> pentru dropdown de proiecte.</p>
                   </div>
                 ) : (
                   <div className="text-xs space-y-1">
@@ -923,6 +925,7 @@ export function RegistryEntryForm({
                       <li>Notificare incepere lucrari — Proiect X</li>
                     </ul>
                     <p className="text-muted-foreground">Selecteaza un sablon sau tasteaza liber.</p>
+                    <p className="text-muted-foreground mt-1">Tip: scrie <span className="font-mono text-foreground">{"{proiect}"}</span> pentru dropdown de proiecte.</p>
                   </div>
                 )}
               </TooltipContent>
@@ -949,8 +952,29 @@ export function RegistryEntryForm({
           <Input
             value={subjectQuery}
             onChange={(e) => {
-              setSubjectQuery(e.target.value);
-              setSubject(e.target.value);
+              const val = e.target.value;
+              setSubjectQuery(val);
+              setSubject(val);
+
+              // Auto-detect {proiect}, {nr}, {an}, {detalii}, {text} placeholders
+              // and switch to template mode when a closing } is typed
+              if (val.includes("{") && val.includes("}")) {
+                const dynTemplate = createDynamicTemplate(val);
+                if (dynTemplate) {
+                  // Pre-fill default values (e.g. current year for {an})
+                  const prefill: Record<string, string> = {};
+                  for (const field of dynTemplate.fields) {
+                    if (field.defaultValue) {
+                      prefill[field.id] = field.defaultValue;
+                    }
+                  }
+                  setActiveTemplate(dynTemplate);
+                  setTemplateFieldValues(prefill);
+                  setSubject(assembleSubject(dynTemplate, prefill));
+                  setSubjectFocused(false);
+                  return;
+                }
+              }
             }}
             onFocus={() => setSubjectFocused(true)}
             onBlur={() => setTimeout(() => setSubjectFocused(false), 200)}