chore(dev): wire mana-crawler into the local dev stack

Three small config changes so the Kontext "Aus URL" flow (next commit)
is runnable from a plain `pnpm dev:mana:all`:

- package.json: include mana-crawler in the dev:mana:servers
  concurrently group, and pass DATABASE_URL=…/mana_platform so the
  Go binary doesn't try to connect to a non-existent `mana` DB (its
  hardcoded default).
- .env.development: publish MANA_CRAWLER_URL=http://localhost:3023
  (the crawler's default binary port — the macmini container is
  a 3014 override, kept only in docker-compose). Also surface
  MANA_LLM_DEFAULT_MODEL for the summariser.
- docker-compose.macmini.yml: inject MANA_CRAWLER_URL + the
  default-model env into the mana-api container so production
  can reach the internal crawler and pick the summariser model
  consistently.

No runtime code touched.

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

docker-compose.macmini.yml

@@ -1527,6 +1527,8 @@ services:
       MANA_SEARCH_URL: http://mana-search:3012
       MANA_CREDITS_URL: http://mana-credits:3002
       MANA_MEDIA_URL: http://mana-media:3011
+      MANA_CRAWLER_URL: http://mana-crawler:3014
+      MANA_LLM_DEFAULT_MODEL: ${MANA_LLM_DEFAULT_MODEL:-gemma3:4b}
       MANA_SERVICE_KEY: ${MANA_SERVICE_KEY}
       APP_ID: mana-api
       # Database (used by modules that have server-side state — research,