docs(5.9): PRD corectie modal mobil + scaffold Ralph (prd.json cu R1-R12)

- docs/prd/prd-5.9-ux-corectie-modal-mobil.md: PRD aprobat (8 stories, raport AUTOPLAN)
- scripts/ralph/: ralph.sh + prompt.md (smart-gates) + progress.txt
- scripts/ralph/prd.json: 8 user stories cu reviziile obligatorii R1-R12 incorporate
  in acceptance criteria; priority encodeaza valurile de dependente
- .gitignore: runtime Ralph (logs/screenshots/archive/.last-branch/usage.jsonl)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -81,3 +81,11 @@ venv/
 
 # --- Playwright MCP: artefacte sesiune browser (snapshot-uri, stare locala) ---
 .playwright-mcp/
+
+# --- Ralph: runtime loop autonom (stare locala, nu artefact de proiect) ---
+scripts/ralph/logs/
+scripts/ralph/screenshots/
+scripts/ralph/archive/
+scripts/ralph/.last-branch
+scripts/ralph/.ralph.pid
+scripts/ralph/usage.jsonl