feat(3.15): AI Tools extindere si integrare

Prompt Generator:
- Search bar cu cautare in name/description/tags/category
- Filtru target type (text/image) cu toggle rapid 'Imagine'
- 4 template-uri noi imagine: Midjourney Exterior, SD Interior,
  Midjourney Infographic, SD Material Texture (18 total)
- Config v0.2.0

AI Chat  Real API Integration:
- /api/ai-chat route: multi-provider (OpenAI, Anthropic, Ollama, demo)
- System prompt default in romana pt context arhitectura
- GET: config status, POST: message routing
- use-chat.ts: sendMessage() cu fetch real, sending state,
  providerConfig fetch, updateSession() pt project linking
- UI: provider status badge (Wifi/WifiOff), Bot icon pe mesaje,
  loading spinner la generare, disable input while sending
- Config banner cu detalii provider/model/stare

AI Chat + Tag Manager:
- Project selector dropdown in chat header (useTags project)
- Session linking: projectTagId + projectName on ChatSession
- Project name display in session sidebar
- Project context injected in system prompt

Docker:
- AI env vars: AI_PROVIDER, AI_API_KEY, AI_MODEL, AI_BASE_URL, AI_MAX_TOKENS

docker-compose.yml

@@ -33,6 +33,12 @@ services:
       - ENCRYPTION_SECRET=ArchiTools-Vault-2025!SecureKey@AES256
       # ManicTime Tags.txt sync (SMB mount path)
       - MANICTIME_TAGS_PATH=/mnt/manictime/Tags.txt
+      # AI Chat (set AI_PROVIDER to openai/anthropic/ollama; demo if no key)
+      - AI_PROVIDER=${AI_PROVIDER:-demo}
+      - AI_API_KEY=${AI_API_KEY:-}
+      - AI_MODEL=${AI_MODEL:-}
+      - AI_BASE_URL=${AI_BASE_URL:-}
+      - AI_MAX_TOKENS=${AI_MAX_TOKENS:-2048}
     volumes:
       # SMB share for ManicTime Tags.txt (mount on host: //time/tags → /mnt/manictime)
       - /mnt/manictime:/mnt/manictime