Rename Asterisk container from easy-asterisk to asterisk

New installs now name the container "asterisk", matching every other
service's container_name == service name convention, instead of
reusing the vendored easy-asterisk CLI tool's own name (which stays
/usr/local/bin/easy-asterisk inside the container, unrelated and
unchanged).

An existing "easy-asterisk" install is never silently renamed: every
place that resolves the container name (_asterisk_resolve_layout in
asterisk.sh, plus the duplicated copies in security-dashboard.sh,
sms-inbound.sh, pstn-trunk.sh, and tools/pstn-test-check.sh's docker ps
detection) now reads it from the box's own docker-compose.yml instead
of assuming it, falling back to "asterisk" only when there's no
existing install to read. Migrating a live box to the new name is a
one-time manual action (edit docker-compose.yml's container_name for
Asterisk and its coturn sidecar, docker compose down + up -d); every
sibling service then picks it up automatically on its next run.

The DigitalOcean-droplet layout (asterisk-digital-ocean directory,
easy-asterisk-do container) is untouched by this - that naming stays
exactly as documented for pre-merge droplet installs.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SpKTLpwAgZNooTacWeQLuc

services/pstn-trunk.sh

@@ -1436,7 +1436,7 @@ _pstn_check_killswitch_clear() {
 # _pstn_install_periodic_timer above) ───────────────────────────────────────
 _pstn_write_usage_alert_script() {
     local FILE="$1" EA_DIR="$2" ASTERISK_DIR="$3" RATE="$4" MONTH_THRESHOLD="$5" \
-          BURST_THRESHOLD="$6" MAX_MONTHLY_SPEND="$7" NTFY_URL="$8" CONTAINER_NAME="${9:-easy-asterisk}"
+          BURST_THRESHOLD="$6" MAX_MONTHLY_SPEND="$7" NTFY_URL="$8" CONTAINER_NAME="${9:-asterisk}"
     cat > "$FILE" << 'EOF'
 #!/bin/bash
 # Auto-generated by services/pstn-trunk.sh — do not edit directly, re-run
@@ -1719,7 +1719,7 @@ _pstn_apply_settings() {
     local EA_DIR="$1" ASTERISK_DIR="$2"
     local SERVER="$3" SERVER_IPS="$4" DID="$5"
     local RING_EXTS="$6" NTFY_URL="$7" RATE="$8" MONTH_THRESHOLD="$9" BURST_THRESHOLD="${10}"
-    local PROVIDER_NAME="${11}" MAX_MONTHLY_SPEND="${12:-0}" CONTAINER_NAME="${13:-easy-asterisk}"
+    local PROVIDER_NAME="${11}" MAX_MONTHLY_SPEND="${12:-0}" CONTAINER_NAME="${13:-asterisk}"
 
     _pstn_patch_vendor_files "$EA_DIR" || return 1
 
@@ -1879,8 +1879,18 @@ install_pstn-trunk() {
     local KILLSWITCH_FILE="$ASTERISK_DIR/pstn-trunk-killswitch.conf"
     local PERSONAL_DIDS_FILE="$ASTERISK_DIR/pstn-personal-dids.conf"
     local SETTINGS_FILE="$EA_DIR/.pstn-trunk.env"
-    local CONTAINER_NAME="easy-asterisk"
-    [[ "$ASTERISK_KIND" == "asterisk-digital-ocean" ]] && CONTAINER_NAME="easy-asterisk-do"
+    # Read the box's own container_name instead of assuming — new installs
+    # use plain "asterisk" now, but an existing "easy-asterisk" install
+    # (this repo's container name before that rename) keeps working
+    # unchanged until someone deliberately migrates it. See
+    # services/asterisk.sh's _asterisk_resolve_layout for the reasoning.
+    local CONTAINER_NAME="asterisk"
+    if [[ "$ASTERISK_KIND" == "asterisk-digital-ocean" ]]; then
+        CONTAINER_NAME="easy-asterisk-do"
+    elif [[ -f "$EA_DIR/docker-compose.yml" ]]; then
+        CONTAINER_NAME="$(grep -m1 '^[[:space:]]*container_name:' "$EA_DIR/docker-compose.yml" | awk '{print $2}')"
+        [[ -z "$CONTAINER_NAME" ]] && CONTAINER_NAME="asterisk"
+    fi
 
     if [ "$DRY_RUN" = true ]; then
         echo "[DRY-RUN] Would require an existing asterisk install (droplet or home/LAN)"
@@ -1988,8 +1998,13 @@ install_pstn-trunk() {
                     # never picking up dialplan changes at all. Re-assert the fresh
                     # detection here, discarding the sourced value, so it can't drift
                     # from reality and self-heals the persisted file too.
-                    CONTAINER_NAME="easy-asterisk"
-                    [[ "$ASTERISK_KIND" == "asterisk-digital-ocean" ]] && CONTAINER_NAME="easy-asterisk-do"
+                    CONTAINER_NAME="asterisk"
+                    if [[ "$ASTERISK_KIND" == "asterisk-digital-ocean" ]]; then
+                        CONTAINER_NAME="easy-asterisk-do"
+                    elif [[ -f "$EA_DIR/docker-compose.yml" ]]; then
+                        CONTAINER_NAME="$(grep -m1 '^[[:space:]]*container_name:' "$EA_DIR/docker-compose.yml" | awk '{print $2}')"
+                        [[ -z "$CONTAINER_NAME" ]] && CONTAINER_NAME="asterisk"
+                    fi
                     _pstn_check_killswitch_clear "$ASTERISK_DIR"
                     _pstn_apply_settings "$EA_DIR" "$ASTERISK_DIR" \
                         "$TRUNK_SERVER" "${TRUNK_SERVER_IPS:-}" "$TRUNK_DID" \