configs: rename dirs to match live koopa containers

Reflect host naming in git paths:
- configs/taler-hacktivism/ (was taler-merchant) → container taler-hacktivism
- configs/taler-hacktivism-bank/ (was taler-bank) → container …-bank,
  image taler-hacktivism-banking:live
- configs/taler-exchange-ansible/ already matches …-exchange-ansible
- configs/taler-exchange/ = conf inside that exchange container

Update LIVE.md, README, ports/refs. No secret values.

configs/taler-merchant/nginx-taler-merchant.conf

@@ -1,50 +0,0 @@
-# Container: /etc/nginx/sites-available/taler-merchant
-# Enabled: sites-enabled/taler-merchant → this file
-# Host publish: 9010/tcp (podman pasta). Caddy terminates public HTTPS and
-# reverse_proxies to https://127.0.0.1:9010 (see configs/caddy/Caddyfile).
-
-server {
-    listen 9010 ssl;
-    listen [::]:9010 ssl;
-
-    server_name taler.hacktivism.ch;
-
-    ssl_certificate /etc/letsencrypt/live/taler.hacktivism.ch/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/taler.hacktivism.ch/privkey.pem;
-
-    access_log /var/log/nginx/merchant.log;
-    error_log /var/log/nginx/merchant.err;
-
-    # Public landing first (Caddy should also redir / → /intro/; this covers :9010)
-    location = / {
-        return 302 /intro/;
-    }
-
-    # Merchant-httpd only serves /terms and /privacy without trailing slash
-    location = /terms/ {
-        return 302 /terms;
-    }
-    location = /privacy/ {
-        return 302 /privacy;
-    }
-
-    location / {
-        proxy_pass http://unix:/var/run/taler-merchant/httpd/merchant-http.sock;
-        proxy_redirect off;
-        proxy_set_header Host $host;
-        proxy_set_header X-Forwarded-Host "taler.hacktivism.ch";
-        proxy_set_header X-Forwarded-Proto "https";
-    }
-}
-
-server {
-    # ACME HTTP-01 is handled by Caddy :9000; this block kept for reference.
-    # listen 9010;
-    # listen [::]:9010;
-
-    server_name taler.hacktivism.ch;
-
-    location /.well-known/acme-challenge/ {
-        alias /var/www/letsencrypt/.well-known/acme-challenge/;
-    }
-}