diff --git a/README.md b/README.md
index f426677..00611cb 100644
--- a/README.md
+++ b/README.md
@@ -186,7 +186,7 @@ a ready-to-copy Caddy config snippet to `~/docker/caddy-snippets/`.
 |-------|---------|
 | `base` | `net-tools`, `ncdu`, `git`, `curl`, `wget`, `htop`, `tree`, `zip`/`unzip`, `ca-certificates`, `gnupg`, `jq`, `rsync`; `glow` (terminal markdown reader, Charm apt repo); Docker CE + Compose plugin; `openssh-server` with GitHub/Launchpad SSH key import, optional password-auth lockdown, and SSH Host aliases; optional NetBird overlay network |
 | `homelab` | `caddy`, `crowdsec`, `authelia`, `homeassistant`, `asterisk` (own dedicated coturn for TURN/STUN — see `mattermost` below for the other coturn-owning service), `pstn-trunk`, `sms-inbound`, `security-dashboard`, `sunshine`, `vpn-data-mount` (mount existing SMB shares from a NetBird-connected home box — SSH trust bootstrap, then read-only discovery of shares already configured there; never writes to the home box's Samba config; repeatable, pick from any number of a home box's shares in one pass; optional per-share [gocryptfs decrypt layer](#client-side-encryption-for-vpn-data-mount) so the VPS only ever handles ciphertext) |
-| `utilities` | `actualbudget`, `ai-gpu`, `ai-stack`, `archivebox`, `beszel` (lightweight server + Docker monitoring — CPU/RAM/disk/network, auto-discovers running containers via the Docker socket; complements Gatus rather than replacing it — Gatus is a black-box HTTP check, Beszel is white-box host/process monitoring), `beszel-agent` (agent-only Beszel install for a remote/homelab box reporting to a hub elsewhere — connects outbound over HTTPS, no VPN/port-forwarding/FQDN needed on that box), `changedetection`, `ddclient`, `filebrowser`, `fmd`, `gatus`, `homebox`, `iopaint`, `joplin`, `koha`, `magicmirror`, `mail-archiver`, `mattermost`, `mealie`, `meshcentral`, `n8n`, `nextcloud`, `ntfy`, `onlyoffice`, `paintplus`, `portainer`, `rustdesk`, `stirling-pdf`, `syncthing`, `traccar`, `unifi`, `uptimekuma`, `vaultwarden`, `watchyourlan`, `watchtower`, `wg-easy`, `wordpress` (multi-site, dedicated MariaDB per site — blogs, business sites, e-commerce via WooCommerce) |
+| `utilities` | `actualbudget`, `ai-gpu`, `ai-stack`, `archivebox`, `beszel` (lightweight server + Docker monitoring — CPU/RAM/disk/network, auto-discovers running containers via the Docker socket; complements Gatus rather than replacing it — Gatus is a black-box HTTP check, Beszel is white-box host/process monitoring), `beszel-agent` (agent-only Beszel install for a remote/homelab box reporting to a hub elsewhere — connects outbound over HTTPS, no VPN/port-forwarding/FQDN needed on that box), `changedetection`, `ddclient`, `filebrowser`, `fmd`, `gatus`, `homebox`, `iopaint`, `joplin`, `koha`, `magicmirror`, `mail-archiver`, `mattermost`, `mealie`, `meshcentral`, `n8n`, `nextcloud`, `ntfy`, `onlyoffice`, `paintplus`, `pihole` (standalone DNS ad/tracker blocking — not wired into any VPN's DNS push), `portainer`, `rustdesk`, `stirling-pdf`, `syncthing`, `traccar`, `unifi`, `uptimekuma`, `vaultwarden`, `watchyourlan`, `watchtower`, `wg-easy`, `wordpress` (multi-site, dedicated MariaDB per site — blogs, business sites, e-commerce via WooCommerce) |
 | `media` | `arm`, `audiobookshelf`, `calibre-web`, `emby`, `immich`, `jellyfin`, `lyrion` |
 | `cameras` | `frigate`, `frigate-audio`, `frigate-notify`, `sky-cam` |
 | `gaming` | `drum-rhythm-game`, `js99er`, `kyber-launcher`, `kyber-server`, `minecraft`, `wolf`, `wolf-pair` |
diff --git a/extras/fix_pikapods_dump.py b/extras/fix_pikapods_dump.py
new file mode 100755
index 0000000..6c90409
--- /dev/null
+++ b/extras/fix_pikapods_dump.py
@@ -0,0 +1,302 @@
+#!/usr/bin/env python3
+"""
+fix_pikapods_dump.py — Patches two confirmed Adminer PostgreSQL-export bugs
+in a Mattermost SQL dump, before importing it via migrate-from-pikapods.sh.
+
+Bug 1: Adminer omits quotes around enum-label DEFAULT values, e.g.
+       DEFAULT link            instead of   DEFAULT 'link'
+       DEFAULT client_credentials instead of DEFAULT 'client_credentials'
+       This makes Postgres treat the label as a column reference, which is
+       illegal in a DEFAULT expression, so the whole CREATE TABLE fails.
+
+Bug 2: Adminer serializes PostgreSQL boolean columns as bare integer
+       literals (0 / 1) in INSERT statements instead of true/false.
+       Postgres does not implicitly cast integer literals to boolean, so
+       every row touching one of those columns is rejected.
+
+Bug 2's fix parses each CREATE TABLE in the dump to find every column
+declared as `boolean` (not a hand-curated list from partial error
+messages — Postgres only reports the FIRST bad column per row, so a
+list built from error output alone would likely be incomplete). It then
+rewrites only the VALUES-tuple positions that correspond to those
+specific boolean columns, leaving every other value in the row
+(including other literal 0/1 integers) untouched.
+
+Usage:
+    python3 fix_pikapods_dump.py input.sql output.sql
+
+Always writes to a NEW file — never modifies the input in place — so the
+original export is preserved if something looks wrong afterward.
+"""
+import re
+import sys
+
+
+def split_top_level(s, sep=","):
+    """Split s on sep, but only outside single-quoted strings and outside
+    nested parens. '' inside a quoted string is the SQL escape for a
+    literal quote and does not end the string."""
+    parts = []
+    buf = []
+    depth = 0
+    in_quote = False
+    i = 0
+    n = len(s)
+    while i < n:
+        c = s[i]
+        if in_quote:
+            if c == "'":
+                # doubled quote = escaped literal quote, stays in_quote
+                if i + 1 < n and s[i + 1] == "'":
+                    buf.append("''")
+                    i += 2
+                    continue
+                in_quote = False
+                buf.append(c)
+                i += 1
+                continue
+            buf.append(c)
+            i += 1
+            continue
+        if c == "'":
+            in_quote = True
+            buf.append(c)
+            i += 1
+            continue
+        if c == "(":
+            depth += 1
+            buf.append(c)
+            i += 1
+            continue
+        if c == ")":
+            depth -= 1
+            buf.append(c)
+            i += 1
+            continue
+        if c == sep and depth == 0:
+            parts.append("".join(buf))
+            buf = []
+            i += 1
+            continue
+        buf.append(c)
+        i += 1
+    parts.append("".join(buf))
+    return parts
+
+
+def split_statements(sql_text):
+    """Split a whole dump into individual statements at semicolons that
+    are not inside a quoted string. Returns list of (statement_text,
+    trailing_terminator) so the exact original text can be reassembled
+    byte-for-byte from the pieces."""
+    stmts = []
+    buf = []
+    in_quote = False
+    i = 0
+    n = len(sql_text)
+    while i < n:
+        c = sql_text[i]
+        if in_quote:
+            buf.append(c)
+            if c == "'":
+                if i + 1 < n and sql_text[i + 1] == "'":
+                    buf.append(sql_text[i + 1])
+                    i += 2
+                    continue
+                in_quote = False
+            i += 1
+            continue
+        if c == "'":
+            in_quote = True
+            buf.append(c)
+            i += 1
+            continue
+        if c == ";":
+            buf.append(c)
+            stmts.append("".join(buf))
+            buf = []
+            i += 1
+            continue
+        buf.append(c)
+        i += 1
+    if buf:
+        stmts.append("".join(buf))
+    return stmts
+
+
+CREATE_TABLE_NAME_RE = re.compile(
+    r'CREATE TABLE\s+(?:"public"\.)?"([^"]+)"\s*\(',
+    re.IGNORECASE,
+)
+INSERT_RE = re.compile(
+    r'^(INSERT INTO\s+(?:"public"\.)?"([^"]+)"\s*\()([^)]*)\)\s*VALUES\s*(.*);\s*$',
+    re.IGNORECASE | re.DOTALL,
+)
+
+
+def find_matching_paren(s, open_idx):
+    """Return the index of the ')' matching the '(' at open_idx, skipping
+    over quoted strings so a paren inside a quoted default value (e.g. a
+    function call in a DEFAULT expression) doesn't miscount depth."""
+    depth = 0
+    in_quote = False
+    i = open_idx
+    n = len(s)
+    while i < n:
+        c = s[i]
+        if in_quote:
+            if c == "'":
+                if i + 1 < n and s[i + 1] == "'":
+                    i += 2
+                    continue
+                in_quote = False
+            i += 1
+            continue
+        if c == "'":
+            in_quote = True
+            i += 1
+            continue
+        if c == "(":
+            depth += 1
+        elif c == ")":
+            depth -= 1
+            if depth == 0:
+                return i
+        i += 1
+    return -1
+
+
+def parse_boolean_columns(create_table_stmt):
+    """Given a full CREATE TABLE statement (trailing syntax after the
+    closing paren — WITHOUT OIDS, TABLESPACE, etc — is fine, not assumed
+    absent), return the set of column names declared as boolean."""
+    name_m = CREATE_TABLE_NAME_RE.search(create_table_stmt)
+    if not name_m:
+        return set()
+    open_idx = name_m.end() - 1  # the '(' the regex matched
+    close_idx = find_matching_paren(create_table_stmt, open_idx)
+    if close_idx == -1:
+        return set()
+    body = create_table_stmt[open_idx + 1 : close_idx]
+    cols = set()
+    for coldef in split_top_level(body):
+        coldef = coldef.strip()
+        cm = re.match(r'^"([^"]+)"\s+([A-Za-z_][A-Za-z0-9_]*)', coldef)
+        if cm and cm.group(2).lower() == "boolean":
+            cols.add(cm.group(1))
+    return cols
+
+
+def fix_default_quoting(stmt):
+    """Bug 1: unquoted enum-label DEFAULTs. Only touches DEFAULT clauses
+    that name one of the two enum types confirmed broken in this export
+    (channel_bookmark_type, outgoingoauthconnections_granttype) — narrow
+    and conservative rather than a blanket 'quote anything after DEFAULT'
+    rule that could misfire on legitimate unquoted defaults elsewhere
+    (numbers, now(), etc)."""
+    stmt, n1 = re.subn(
+        r"(channel_bookmark_type\s+DEFAULT\s+)([A-Za-z_][A-Za-z0-9_]*)(?=[,\)])",
+        r"\1'\2'",
+        stmt,
+    )
+    stmt, n2 = re.subn(
+        r"(outgoingoauthconnections_granttype\s+DEFAULT\s+)([A-Za-z_][A-Za-z0-9_]*)(?=[,\)])",
+        r"\1'\2'",
+        stmt,
+    )
+    return stmt, n1 + n2
+
+
+def patch_insert_booleans(stmt, table, col_list_raw, values_raw, bool_cols):
+    """Rewrite bare 0/1 literals to false/true at the positions in
+    col_list_raw that correspond to bool_cols. Returns (new_values_text,
+    count_of_values_changed)."""
+    col_names = [c.strip().strip('"') for c in split_top_level(col_list_raw)]
+    bool_positions = {i for i, c in enumerate(col_names) if c in bool_cols}
+    if not bool_positions:
+        return values_raw, 0
+
+    tuples = split_top_level(values_raw)
+    changed = 0
+    new_tuples = []
+    for tup in tuples:
+        tup_stripped = tup.strip()
+        if not (tup_stripped.startswith("(") and tup_stripped.endswith(")")):
+            new_tuples.append(tup)
+            continue
+        inner = tup_stripped[1:-1]
+        vals = split_top_level(inner)
+        for pos in bool_positions:
+            if pos >= len(vals):
+                continue
+            v = vals[pos].strip()
+            if v == "0":
+                vals[pos] = "false"
+                changed += 1
+            elif v == "1":
+                vals[pos] = "true"
+                changed += 1
+        prefix = tup[: len(tup) - len(tup.lstrip())]
+        suffix = tup[len(tup.rstrip()):]
+        new_tuples.append(prefix + "(" + ",".join(vals) + ")" + suffix)
+    return ",".join(new_tuples), changed
+
+
+def process(input_path, output_path):
+    with open(input_path, "r", encoding="utf-8", errors="surrogateescape") as f:
+        text = f.read()
+
+    statements = split_statements(text)
+    bool_cols_by_table = {}
+    out = []
+    default_fixes = 0
+    total_value_fixes = 0
+    tables_patched = set()
+
+    for stmt in statements:
+        stripped = stmt.strip()
+        upper = stripped.upper()
+
+        if upper.startswith("CREATE TABLE"):
+            fixed_stmt, n = fix_default_quoting(stmt)
+            default_fixes += n
+            name_m = CREATE_TABLE_NAME_RE.search(fixed_stmt)
+            if name_m:
+                bool_cols_by_table[name_m.group(1)] = parse_boolean_columns(fixed_stmt)
+            out.append(fixed_stmt)
+            continue
+
+        if upper.startswith("INSERT INTO"):
+            m = INSERT_RE.match(stripped)
+            if m:
+                prefix, table, col_list_raw, values_raw = m.groups()
+                bool_cols = bool_cols_by_table.get(table, set())
+                if bool_cols:
+                    new_values, n = patch_insert_booleans(
+                        stripped, table, col_list_raw, values_raw, bool_cols
+                    )
+                    if n:
+                        total_value_fixes += n
+                        tables_patched.add(table)
+                        rebuilt = f'{prefix}{col_list_raw}) VALUES {new_values};'
+                        out.append(rebuilt)
+                        continue
+            out.append(stmt)
+            continue
+
+        out.append(stmt)
+
+    with open(output_path, "w", encoding="utf-8", errors="surrogateescape") as f:
+        f.write("".join(out))
+
+    print(f"DEFAULT-clause quoting fixes: {default_fixes}")
+    print(f"Boolean literal fixes: {total_value_fixes} across {len(tables_patched)} table(s)")
+    if tables_patched:
+        print("Tables patched: " + ", ".join(sorted(tables_patched)))
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 3:
+        print(f"Usage: {sys.argv[0]} input.sql output.sql", file=sys.stderr)
+        sys.exit(1)
+    process(sys.argv[1], sys.argv[2])
diff --git a/services/backup.sh b/services/backup.sh
index b3a18b7..47a0669 100644
--- a/services/backup.sh
+++ b/services/backup.sh
@@ -421,6 +421,11 @@ install_backup() {
     echo ""
 
     local DEFAULT_DEST="$ACTUAL_HOME/backups/kopia-backup"
+    if [ -f "$CONF_FILE" ]; then
+        local _existing_default_repo
+        _existing_default_repo="$(grep '^DEST_default_REPO=' "$CONF_FILE" 2>/dev/null | sed -E 's/^DEST_default_REPO="(.*)"$/\1/')"
+        [ -n "$_existing_default_repo" ] && DEFAULT_DEST="$_existing_default_repo"
+    fi
     local _repo=""
     prompt_text "  Default repository path [${DEFAULT_DEST}]:" "$DEFAULT_DEST" _repo
     _repo="${_repo/#\~/$ACTUAL_HOME}"; _repo="${_repo%/}"
@@ -430,6 +435,28 @@ install_backup() {
     DEST_REPOS["default"]="$_repo"
     DEST_CONFIGS["default"]="/etc/kopia-backup/default.config"
 
+    # Preserve any extra (non-"default") destinations already configured.
+    # This script has no update/fresh distinction, so without this,
+    # skipping the "Add more destinations?" prompt below on a rerun would
+    # silently drop every extra destination — and anything mapped to it —
+    # from the rewritten backup.conf, rather than just leaving it as-is.
+    if [ -f "$CONF_FILE" ]; then
+        local _existing_dest_names _en _existing_repo _existing_cfg
+        _existing_dest_names="$(grep '^DEST_NAMES=' "$CONF_FILE" 2>/dev/null | sed -E 's/^DEST_NAMES="(.*)"$/\1/')"
+        for _en in $_existing_dest_names; do
+            [ "$_en" = "default" ] && continue
+            _existing_repo="$(grep "^DEST_${_en}_REPO=" "$CONF_FILE" 2>/dev/null | sed -E "s/^DEST_${_en}_REPO=\"(.*)\"\$/\1/")"
+            [ -z "$_existing_repo" ] && continue
+            _existing_cfg="$(grep "^DEST_${_en}_CONFIG=" "$CONF_FILE" 2>/dev/null | sed -E "s/^DEST_${_en}_CONFIG=\"(.*)\"\$/\1/")"
+            DEST_REPOS["$_en"]="$_existing_repo"
+            DEST_CONFIGS["$_en"]="${_existing_cfg:-/etc/kopia-backup/${_en}.config}"
+            DEST_NAMES_ARR+=("$_en")
+        done
+        if [ "${#DEST_NAMES_ARR[@]}" -gt 1 ]; then
+            log_info "  Keeping already-configured destination(s): ${DEST_NAMES_ARR[*]:1}"
+        fi
+    fi
+
     local _extra=""
     prompt_yn "  Add more destinations (for services on different drives)? (y/N):" "n" _extra
     if [[ "$_extra" =~ ^[Yy]$ ]]; then
@@ -440,12 +467,16 @@ install_backup() {
             [ -z "$_dn" ] && break
             _dn="${_dn//[^a-zA-Z0-9_]/_}"
             [ "$_dn" = "default" ] && { log_warning "  'default' is reserved — use another name."; continue; }
-            prompt_text "    Path for '$_dn' repository:" "" _dr
+            # Typing an already-known name reconfigures its path rather than
+            # duplicating it in DEST_NAMES_ARR.
+            prompt_text "    Path for '$_dn' repository:" "${DEST_REPOS[$_dn]:-}" _dr
             [ -z "$_dr" ] && continue
             _dr="${_dr/#\~/$ACTUAL_HOME}"; _dr="${_dr%/}"
             DEST_REPOS["$_dn"]="$_dr"
             DEST_CONFIGS["$_dn"]="/etc/kopia-backup/${_dn}.config"
-            DEST_NAMES_ARR+=("$_dn")
+            if [[ " ${DEST_NAMES_ARR[*]} " != *" $_dn "* ]]; then
+                DEST_NAMES_ARR+=("$_dn")
+            fi
             log_success "    Destination '$_dn' → $_dr"
         done
     fi
@@ -464,11 +495,17 @@ install_backup() {
             printf "    %-16s %s\n" "$dn" "${DEST_REPOS[$dn]}"
         done
         echo ""
-        echo "  Press Enter to accept the default for each service."
+        echo "  Press Enter to accept the shown default for each service."
         echo ""
-        local _d
+        local _d _svc_var _existing_svc_dest
         for svc in "${ALL_SVCS[@]}"; do
-            prompt_text "    $svc [default]:" "default" _d
+            _svc_var="${svc//-/_}"
+            _existing_svc_dest="default"
+            if [ -f "$CONF_FILE" ]; then
+                _existing_svc_dest="$(grep -E "^#?SVC_${_svc_var}=" "$CONF_FILE" 2>/dev/null | tail -1 | sed -E 's/^#?SVC_[A-Za-z0-9_]+="(.*)"$/\1/')"
+                [ -z "$_existing_svc_dest" ] && _existing_svc_dest="default"
+            fi
+            prompt_text "    $svc [$_existing_svc_dest]:" "$_existing_svc_dest" _d
             if [ -n "$_d" ] && [ "$_d" != "default" ] && [ -n "${DEST_REPOS[$_d]:-}" ]; then
                 SVC_DEST_MAP["$svc"]="$_d"
             fi
@@ -518,13 +555,27 @@ install_backup() {
     echo "    3) Weekly (Sunday 02:00)"
     echo "    4) Custom (systemd OnCalendar)"
     echo ""
-    local _sch=""
-    prompt_text "  How often? [1]:" "1" _sch
+    # Preselect whatever's already scheduled, read back from the live timer
+    # unit rather than backup.conf (the schedule isn't stored there — it's
+    # baked directly into the .timer file). Without this, re-running the
+    # installer and just hitting Enter through this prompt would silently
+    # revert a customized schedule back to "1) Daily at 02:00" every time.
+    local _sch="1" _existing_oncal=""
+    if [ -f "/etc/systemd/system/${SVC_NAME}.timer" ]; then
+        _existing_oncal="$(grep '^OnCalendar=' "/etc/systemd/system/${SVC_NAME}.timer" 2>/dev/null | cut -d= -f2-)"
+        case "$_existing_oncal" in
+            "*-*-* 02,14:00:00") _sch="2" ;;
+            "Sun *-*-* 02:00:00") _sch="3" ;;
+            "*-*-* 02:00:00"|"")  _sch="1" ;;
+            *)                    _sch="4" ;;
+        esac
+    fi
+    prompt_text "  How often? [$_sch]:" "$_sch" _sch
     local ONCALENDAR SCHED_LABEL
     case "${_sch:-1}" in
         2) ONCALENDAR="*-*-* 02,14:00:00"; SCHED_LABEL="every 12 hours"       ;;
         3) ONCALENDAR="Sun *-*-* 02:00:00"; SCHED_LABEL="weekly Sunday 02:00" ;;
-        4) prompt_text "  OnCalendar expression:" "*-*-* 02:00:00" ONCALENDAR; SCHED_LABEL="$ONCALENDAR" ;;
+        4) prompt_text "  OnCalendar expression:" "${_existing_oncal:-*-*-* 02:00:00}" ONCALENDAR; SCHED_LABEL="$ONCALENDAR" ;;
         *) ONCALENDAR="*-*-* 02:00:00";     SCHED_LABEL="daily at 02:00"      ;;
     esac
     local KEEP_LATEST=""
@@ -542,9 +593,13 @@ install_backup() {
     echo "  Example URL: https://ntfy.sh/my-backup-alerts"
     echo ""
     local NTFY_URL="" NTFY_TOKEN=""
-    prompt_text "  ntfy topic URL (blank to skip):" "" NTFY_URL
+    if [ -f "$CONF_FILE" ]; then
+        NTFY_URL="$(grep "^NTFY_URL=" "$CONF_FILE" 2>/dev/null | sed -E "s/^NTFY_URL='(.*)'\$/\1/")"
+        NTFY_TOKEN="$(grep "^NTFY_TOKEN=" "$CONF_FILE" 2>/dev/null | sed -E "s/^NTFY_TOKEN='(.*)'\$/\1/")"
+    fi
+    prompt_text "  ntfy topic URL (blank to skip)${NTFY_URL:+ — already set to $NTFY_URL}:" "$NTFY_URL" NTFY_URL
     if [ -n "$NTFY_URL" ]; then
-        prompt_text "  ntfy access token (blank if public/no auth):" "" NTFY_TOKEN
+        prompt_text "  ntfy access token (blank if public/no auth${NTFY_TOKEN:+ — one is already set, Enter keeps it}):" "$NTFY_TOKEN" NTFY_TOKEN
     fi
 
     # ── Disaster-recovery spare box (optional) ────────────────────────────────
@@ -774,14 +829,29 @@ install_backup() {
         # live: a paste into the hidden Application Key field can silently
         # capture nothing depending on the terminal/SSH client, with no
         # other symptom until this point.
-        local B2_BUCKET="" B2_ENDPOINT="" B2_KEY_ID="" B2_APP_KEY=""
-        prompt_text "  Bucket name:" "" B2_BUCKET
+        # Pre-fill from whatever's already configured (only meaningful if the
+        # existing REMOTE_TYPE really is s3/B2 — a REMOTE_ARGS left over from
+        # a different provider, e.g. sftp, wouldn't parse into anything
+        # useful here and is harmlessly skipped). Otherwise reconfiguring
+        # just to rotate one field means blindly retyping all four, and a
+        # mispaste on any one of them loses the other three that were
+        # already typed correctly this run.
+        local _existing_b2_bucket="" _existing_b2_endpoint="" _existing_b2_keyid="" _existing_b2_appkey=""
+        if [ "$REMOTE_TYPE" = "s3" ]; then
+            _existing_b2_bucket="$(echo "$REMOTE_ARGS" | grep -oE -- '--bucket=[^ ]*' | cut -d= -f2-)"
+            _existing_b2_endpoint="$(echo "$REMOTE_ARGS" | grep -oE -- '--endpoint=[^ ]*' | cut -d= -f2-)"
+            _existing_b2_keyid="$(echo "$REMOTE_ARGS" | grep -oE -- '--access-key=[^ ]*' | cut -d= -f2-)"
+            _existing_b2_appkey="$(echo "$REMOTE_ARGS" | grep -oE -- '--secret-access-key=[^ ]*' | cut -d= -f2-)"
+        fi
+        local B2_BUCKET="$_existing_b2_bucket" B2_ENDPOINT="$_existing_b2_endpoint" B2_KEY_ID="$_existing_b2_keyid" B2_APP_KEY=""
+        prompt_text "  Bucket name:" "$B2_BUCKET" B2_BUCKET
         echo "    (${#B2_BUCKET} characters entered)"
-        prompt_text "  Endpoint (e.g. s3.us-west-004.backblazeb2.com):" "" B2_ENDPOINT
+        prompt_text "  Endpoint (e.g. s3.us-west-004.backblazeb2.com):" "$B2_ENDPOINT" B2_ENDPOINT
         echo "    (${#B2_ENDPOINT} characters entered)"
-        prompt_text "  Application Key ID:" "" B2_KEY_ID
+        prompt_text "  Application Key ID:" "$B2_KEY_ID" B2_KEY_ID
         echo "    (${#B2_KEY_ID} characters entered)"
-        read -rsp "  Application Key (input hidden): " B2_APP_KEY; echo
+        read -rsp "  Application Key (input hidden${_existing_b2_appkey:+ — leave blank to keep the existing one}): " B2_APP_KEY; echo
+        [ -z "$B2_APP_KEY" ] && B2_APP_KEY="$_existing_b2_appkey"
         echo "    (${#B2_APP_KEY} characters entered)"
 
         local _B2_MISSING=""
diff --git a/services/mattermost.sh b/services/mattermost.sh
index 958559b..6ab3a85 100644
--- a/services/mattermost.sh
+++ b/services/mattermost.sh
@@ -518,6 +518,28 @@ ${_CADDY_NET_BLOCK}    healthcheck:
       timeout: 5s
       retries: 5
 
+  # Fixes ownership on the bind-mounted volumes below to the fixed UID/GID
+  # (2000) mattermost/mattermost-team-edition runs as, before the mattermost
+  # service starts — every time, not just at install time. Confirmed live:
+  # importing data from another host (e.g. a PikaPods migration) can leave
+  # these owned by whatever UID did the copy instead of 2000, and the
+  # container doesn't fix this itself on start the way postgres's official
+  # image does — it just fails every file write with "permission denied"
+  # until someone notices and runs chown by hand. This removes the "by
+  # hand" part permanently: runs on every `docker compose up`, including a
+  # plain host reboot, so ownership drift from any future cause self-heals
+  # without needing this installer re-run again.
+  mattermost-fix-perms:
+    image: busybox:latest
+    container_name: ${MM_CONTAINER}-fix-perms
+    command: sh -c "chown -R 2000:2000 /data /logs /config /plugins"
+    volumes:
+      - ./data:/data
+      - ./logs:/logs
+      - ./config:/config
+      - ./plugins:/plugins
+    restart: "no"
+
   mattermost:
     image: mattermost/mattermost-team-edition:latest
     container_name: ${MM_CONTAINER}
@@ -527,6 +549,8 @@ ${_CADDY_NET_BLOCK}    healthcheck:
     depends_on:
       db:
         condition: service_healthy
+      mattermost-fix-perms:
+        condition: service_completed_successfully
     volumes:
       - ./data:/mattermost/data
       - ./logs:/mattermost/logs
@@ -732,6 +756,15 @@ MD
 # default). If you have a custom-format pg_dump instead, use `pg_restore`
 # in place of the `psql < dump` step below.
 #
+# Adminer's plain-text export has two confirmed bugs of its own — unquoted
+# enum-label DEFAULTs, and boolean columns serialized as bare 0/1 instead
+# of true/false — either of which makes the import below fail outright.
+# extras/fix_pikapods_dump.py patches both; run it on the dump BEFORE this
+# script if psql reports errors on CREATE TYPE/CREATE TABLE or boolean
+# columns:
+#   python3 fix_pikapods_dump.py input.sql output.sql
+#
+
 # IMPORTANT: point the files argument at the SUBDIRECTORY that holds
 # Mattermost's own file storage inside whatever you downloaded via SFTP
 # (commonly named `data`), not the whole SFTP root — PikaPods' exact
@@ -739,7 +772,7 @@ MD
 # before running.
 #
 # Usage:
-#   ./migrate-from-pikapods.sh <path-to-sql-dump> <path-to-files-dir>
+#   sudo ./migrate-from-pikapods.sh <path-to-sql-dump> <path-to-files-dir>
 ################################################################################
 
 MIGRATE_HEAD
@@ -754,13 +787,18 @@ MIGRATE_VARS
 
             cat >> "$DIR/migrate-from-pikapods.sh" << 'MIGRATE_BODY'
 set -uo pipefail
+
+# Needed for the chown to UID 2000 near the end (an ordinary user generally
+# can't chown files to an arbitrary UID that isn't their own).
+[ "${EUID:-$(id -u)}" -eq 0 ] || { echo "Run as root: sudo $0 ..."; exit 1; }
+
 cd "$PROJECT_DIR" || exit 1
 
 SQL_DUMP="${1:-}"
 FILES_DIR="${2:-}"
 
 if [ -z "$SQL_DUMP" ] || [ -z "$FILES_DIR" ]; then
-    echo "Usage: $0 <path-to-sql-dump> <path-to-files-dir>"
+    echo "Usage: sudo $0 <path-to-sql-dump> <path-to-files-dir>"
     exit 1
 fi
 [ -f "$SQL_DUMP" ]  || { echo "SQL dump not found: $SQL_DUMP"; exit 1; }
@@ -807,6 +845,14 @@ echo "Copying files into ./data..."
 mkdir -p ./data
 rsync -a "$FILES_DIR"/ ./data/ 2>/dev/null || cp -a "$FILES_DIR"/. ./data/
 
+# mattermost/mattermost-team-edition runs as fixed UID/GID 2000 — an SFTP'd
+# copy from elsewhere lands owned by whoever ran this script instead, and
+# every file write then fails with "permission denied" until this is
+# fixed. Confirmed live: this is what broke image/file uploads with a
+# client-side "stream closed" error after a migration.
+echo "Fixing ownership on imported files (mattermost image expects UID/GID 2000)..."
+chown -R 2000:2000 ./data
+
 echo "Starting Mattermost..."
 docker compose up -d
 
diff --git a/services/pihole.sh b/services/pihole.sh
new file mode 100644
index 0000000..3673363
--- /dev/null
+++ b/services/pihole.sh
@@ -0,0 +1,449 @@
+#!/bin/bash
+# services/pihole.sh — Pi-hole network-wide DNS ad/tracker blocking.
+# Part of the modular post-install system (sourced by setup.sh).
+#
+# Can also be run standalone on any machine:
+#   sudo bash pihole.sh
+# (Docker must already be installed when run standalone)
+#
+# Deliberately standalone — not wired into wg-easy or any other VPN/DNS
+# push here. Point a device's DNS settings at this box's IP manually to use
+# it. If you want it pushed automatically to VPN clients, that's a
+# wg-easy-side change (WG_CONFIG's DNS setting), not something this
+# installer does on its own.
+
+# ── Standalone bootstrap ──────────────────────────────────────────────────────
+# Detected when the script is executed directly rather than sourced by setup.sh.
+# Sets up helpers and globals, then defers execution until after the function
+# definition at the bottom of this file.
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+    [[ "$(id -u)" == "0" ]] || { echo "Run with sudo: sudo bash $0"; exit 1; }
+
+    _SELF_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    _COMMON="$_SELF_DIR/../lib/common.sh"
+
+    if [[ -f "$_COMMON" ]]; then
+        # Full repo present — use the real helpers (picks up ~/docker/.config too)
+        # shellcheck source=../lib/common.sh
+        source "$_COMMON"
+    else
+        # One-off copy — inline minimal stubs so the script works without the repo
+        log_info()    { echo -e "\033[0;34m[INFO]\033[0m $*"; }
+        log_success() { echo -e "\033[0;32m[OK]\033[0m $*"; }
+        log_warning() { echo -e "\033[1;33m[WARN]\033[0m $*"; }
+        log_error()   { echo -e "\033[0;31m[ERROR]\033[0m $*" >&2; }
+
+        require_docker() {
+            command -v docker &>/dev/null || {
+                log_error "Docker not found. Install it first:"
+                log_error "  curl -fsSL https://get.docker.com | sudo sh"
+                return 1
+            }
+            docker compose version &>/dev/null || {
+                log_error "Docker Compose plugin missing:"
+                log_error "  sudo apt-get install -y docker-compose-plugin"
+                return 1
+            }
+        }
+
+        ensure_docker_dir_ownership() {
+            chown -R "$ACTUAL_USER:$ACTUAL_USER" "$@" 2>/dev/null || true
+        }
+
+        generate_password() {
+            local _len="${1:-32}"
+            tr -dc 'a-zA-Z0-9' < /dev/urandom | head -c "$_len"
+        }
+
+        port_in_use() {
+            local _port="$1" _proto="${2:-tcp}"
+            local _flag="-tlnH"
+            [ "$_proto" = "udp" ] && _flag="-ulnH"
+            ss "$_flag" "sport = :${_port}" 2>/dev/null | grep -q .
+        }
+
+        find_free_port() {
+            local _varname="$1" _port="$2" _proto="${3:-tcp}"
+            while port_in_use "$_port" "$_proto"; do
+                _port=$((_port + 1))
+            done
+            eval "$_varname='$_port'"
+        }
+
+        # Match common.sh's eval-based pattern so local vars in install_* are set correctly
+        prompt_text() {
+            local _q="$1" _def="$2" _var="$3" _r
+            [[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
+            read -r -p "  $_q " _r
+            eval "$_var='${_r:-$_def}'"
+        }
+
+        prompt_yn() {
+            local _q="$1" _def="$2" _var="$3" _r
+            [[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
+            read -r -p "  $_q " _r
+            eval "$_var='${_r:-$_def}'"
+        }
+
+        prompt_reinstall_mode() {
+            local _var="$1" _r
+            [[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='cancel'"; return; }
+            echo ""
+            echo "  1) Update   — refresh the image only, leave config/data as-is"
+            echo "  2) Full reinstall — wipe and reconfigure from scratch"
+            echo "  3) Cancel   — leave the existing install untouched"
+            read -r -p "  Choice [3]: " _r
+            case "$_r" in
+                1) eval "$_var='update'" ;;
+                2) eval "$_var='fresh'" ;;
+                *) eval "$_var='cancel'" ;;
+            esac
+        }
+
+        configure_caddy_for_service() {
+            local _name="$1" _upstream="$2" _subdomain="$3" _extra="${4:-}"
+            local _caddy_dir="$DOCKER_DIR/caddy"
+            local _caddyfile="$_caddy_dir/Caddyfile"
+            local _display_port="${_upstream##*:}"
+
+            # Determine mode: local Caddy, remote Caddy, or none
+            local _mode="none"
+            [[ -d "$_caddy_dir" ]] && _mode="local"
+            [[ -n "${CADDY_REMOTE_HOST:-}" ]] && [[ "$_mode" != "local" ]] && _mode="remote"
+            [[ "$_mode" == "none" ]] && {
+                log_info "Access $_name directly on port $_display_port."
+                return 0
+            }
+
+            echo ""
+            local _do_caddy=""
+            if [[ "$_mode" == "remote" ]]; then
+                log_info "Remote Caddy configured (${CADDY_REMOTE_HOST})."
+                log_info "A snippet file will be saved to ~/docker/caddy-snippets/."
+            fi
+            read -r -p "  Configure Caddy reverse proxy for $_name? [y/N]: " _do_caddy
+            [[ "${_do_caddy,,}" == "y" ]] || {
+                log_info "Skipping — access at: http://localhost:$_display_port"
+                return 0
+            }
+
+            # Domain prompt — pre-fill from SITE_DOMAIN when available
+            local _default_domain=""
+            if [[ -n "${SITE_DOMAIN:-}" ]] && [[ "$SITE_DOMAIN" != "example.com" ]]; then
+                _default_domain="${_subdomain}.${SITE_DOMAIN}"
+                log_info "Default: $_default_domain"
+            fi
+            local _domain=""
+            read -r -p "  Domain [${_default_domain:-required}]: " _domain
+            _domain="${_domain:-$_default_domain}"
+            [[ -n "$_domain" ]] || { log_warning "No domain entered — skipping Caddy."; return 0; }
+
+            # Build upstream — remote Caddy uses host IP:port, not container name
+            local _block_upstream="$_upstream"
+            if [[ "$_mode" == "remote" ]]; then
+                _block_upstream="${CADDY_REMOTE_HOST}:${_display_port}"
+            fi
+
+            local _site_block
+            _site_block="$(cat << CBLOCK
+
+# $_name
+${_domain} {
+    reverse_proxy ${_block_upstream}
+
+    header {
+        Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
+        X-Content-Type-Options "nosniff"
+        X-Frame-Options "SAMEORIGIN"
+        Referrer-Policy "strict-origin-when-cross-origin"
+    }
+
+    log {
+        output file /var/log/caddy/${_domain}.log
+        format json
+    }
+${_extra}
+}
+CBLOCK
+)"
+
+            if [[ "$_mode" == "local" ]]; then
+                if [[ -f "$_caddyfile" ]]; then
+                    local _bk="$_caddy_dir/Caddyfile.backup.$(date +%Y%m%d-%H%M%S)"
+                    cp "$_caddyfile" "$_bk"
+                    log_info "Backed up Caddyfile to $(basename "$_bk")"
+                else
+                    touch "$_caddyfile"
+                fi
+
+                if grep -q "^${_domain}" "$_caddyfile" 2>/dev/null; then
+                    log_warning "$_domain already in Caddyfile"
+                    local _ow=""
+                    read -r -p "  Overwrite? [y/N]: " _ow
+                    [[ "${_ow,,}" == "y" ]] || { log_info "Keeping existing entry."; return 0; }
+                    sed -i "/^${_domain}/,/^}/d" "$_caddyfile"
+                fi
+
+                printf '%s\n' "$_site_block" >> "$_caddyfile"
+                log_success "Added $_domain to Caddyfile"
+                docker exec caddy caddy fmt --overwrite /etc/caddy/Caddyfile 2>/dev/null || true
+                if docker exec caddy caddy reload --config /etc/caddy/Caddyfile 2>/dev/null; then
+                    log_success "$_name accessible at: https://$_domain"
+                else
+                    log_warning "Reload failed — check: docker logs caddy"
+                    log_info "Manual reload: docker exec caddy caddy reload --config /etc/caddy/Caddyfile"
+                fi
+            else
+                local _snippet_dir="$DOCKER_DIR/caddy-snippets"
+                local _snippet_file="$_snippet_dir/${_subdomain}.caddy"
+                mkdir -p "$_snippet_dir"
+                printf '%s\n' "$_site_block" > "$_snippet_file"
+                chown "$ACTUAL_USER:$ACTUAL_USER" "$_snippet_file" 2>/dev/null || true
+                log_success "Snippet saved: $_snippet_file"
+                log_info "Copy to Caddy machine:"
+                log_info "  scp $_snippet_file caddy-host:~/caddy-snippets/"
+                log_info "  rsync -av $_snippet_dir/ caddy-host:~/caddy-snippets/  (all at once)"
+            fi
+        }
+        write_readme() {
+            local _dir="$1"; shift
+            mkdir -p "$_dir"
+            cat > "$_dir/README.md"
+        }
+    fi
+
+    # Globals — ACTUAL_USER/ACTUAL_HOME must come before DOCKER_DIR
+    # ($HOME under sudo is /root, not the real user's home)
+    ACTUAL_USER="${ACTUAL_USER:-${SUDO_USER:-$USER}}"
+    ACTUAL_HOME="$(getent passwd "$ACTUAL_USER" 2>/dev/null | cut -d: -f6 || echo "${HOME:-/root}")"
+    DOCKER_DIR="${DOCKER_DIR:-$ACTUAL_HOME/docker}"
+    DRY_RUN="${DRY_RUN:-false}"
+    UNATTENDED="${UNATTENDED:-false}"
+    SITE_TZ="${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}"
+    SITE_DOMAIN="${SITE_DOMAIN:-example.com}"
+    SITE_CADDY_NET="${SITE_CADDY_NET:-caddy_net}"
+
+    register_service() { :; }   # no-op — no wizard to register into
+    _RUN_STANDALONE=1
+fi
+# ─────────────────────────────────────────────────────────────────────────────
+
+register_service pihole utilities "Network-wide DNS ad/tracker blocking (Pi-hole) — standalone, not wired into any VPN" 80
+
+install_pihole() {
+    require_docker || return 1
+
+    local DIR="$DOCKER_DIR/pihole"
+    local WEB_PORT="8081"
+
+    if [ "$DRY_RUN" = true ]; then
+        echo "[DRY-RUN] Would create $DIR with docker-compose.yml + .env"
+        echo "[DRY-RUN] Would warn (not block) if port 53/tcp or 53/udp is already in use"
+        echo "[DRY-RUN] Would auto-scan for a free host port for the web admin UI"
+        echo "[DRY-RUN] Would generate a random admin password"
+        echo "[DRY-RUN] Would offer a Caddy reverse proxy for the admin UI only (never DNS)"
+        return 0
+    fi
+
+    if [[ -f "$DIR/docker-compose.yml" && -f "$DIR/.env" ]]; then
+        local MODE=""
+        prompt_reinstall_mode MODE
+        case "$MODE" in
+            update)
+                log_info "Refreshing the Pi-hole image only — existing blocklists, config, and"
+                log_info "port are left as-is."
+                ( cd "$DIR" && docker compose pull && docker compose up -d ) \
+                    && log_success "Pi-hole image refreshed" \
+                    || log_warning "Refresh failed — check: docker compose -f $DIR/docker-compose.yml logs"
+                return 0
+                ;;
+            cancel)
+                log_info "Leaving the existing install as-is."
+                return 0
+                ;;
+            fresh) ;;  # fall through to the full install flow below
+        esac
+    fi
+
+    # DNS itself is never scanned/moved — shifting Pi-hole off port 53 would
+    # defeat the point, since every device on the network expects to find DNS
+    # there by convention (unlike a web UI port, nothing lets a client be told
+    # "try a different port instead"). Warn instead: the common case on Ubuntu
+    # is systemd-resolved bound only to 127.0.0.53:53 (loopback), which does
+    # NOT collide with Pi-hole's container publishing 53 on the host's real
+    # interfaces — but if something else really is bound to 0.0.0.0:53, this
+    # says so up front instead of failing silently at `docker compose up`.
+    if port_in_use 53 tcp || port_in_use 53 udp; then
+        log_warning "Something is already listening on port 53 (DNS) — check with:"
+        log_warning "  ss -tulnp | grep ':53 '"
+        log_warning "If that's systemd-resolved bound to 127.0.0.53 only, this is fine —"
+        log_warning "Pi-hole binds the host's real interfaces, not the loopback stub. If"
+        log_warning "it's something else bound to 0.0.0.0:53, Pi-hole's container won't"
+        log_warning "be able to start until that's freed or reconfigured."
+    fi
+
+    find_free_port WEB_PORT "$WEB_PORT"
+
+    mkdir -p "$DIR"
+    ensure_docker_dir_ownership "$DIR"
+    cd "$DIR" || return 1
+
+    # Mirrors configure_caddy_for_service's own mode resolution (lib/common.sh):
+    # explicit CADDY_MODE from the site config wins, then a local ~/docker/caddy,
+    # then the legacy CADDY_REMOTE_HOST var. Only "local" joins caddy_net — a
+    # remote Caddy box can't resolve container names on this host's bridge
+    # network anyway; it reaches this service via the host's published port.
+    # This only ever applies to the WEB admin UI — DNS itself is never behind
+    # Caddy (Caddy only speaks HTTP).
+    local _CADDY_MODE="${CADDY_MODE:-none}"
+    [ "$_CADDY_MODE" = "none" ] && [ -d "$DOCKER_DIR/caddy" ] && _CADDY_MODE="local"
+    [ "$_CADDY_MODE" = "none" ] && [ -n "${CADDY_REMOTE_HOST:-}" ] && _CADDY_MODE="remote"
+
+    local _CADDY_NET_BLOCK=""
+    local _CADDY_NET_SECTION=""
+    if [ "$_CADDY_MODE" = "local" ]; then
+        _CADDY_NET_BLOCK="    networks:
+      - caddy_net
+"
+        _CADDY_NET_SECTION="
+networks:
+  caddy_net:
+    external: true
+    name: ${SITE_CADDY_NET:-caddy_net}
+"
+    fi
+
+    local WEBPASSWORD
+    WEBPASSWORD="$(generate_password 24)"
+
+    # v6 image: config lives entirely under /etc/pihole (TOML-based
+    # pihole.toml) — the old v5 split with a separate /etc/dnsmasq.d volume
+    # and WEBPASSWORD env var are both gone. FTLCONF_webserver_api_password
+    # replaces WEBPASSWORD; FTLCONF_dns_listeningMode=ALL is required under
+    # Docker's default bridge networking or Pi-hole ignores queries from
+    # anything but localhost. cap_add matches Pi-hole's own official compose
+    # example — NET_ADMIN specifically is only needed if this instance is
+    # ever used as a DHCP server too, which it isn't here, but the other two
+    # (SYS_TIME, SYS_NICE) are part of that same documented baseline.
+    cat > docker-compose.yml << PIHOLE_COMPOSE
+name: pihole
+
+services:
+  pihole:
+    image: pihole/pihole:latest
+    container_name: pihole
+    hostname: pihole
+    restart: unless-stopped
+    environment:
+      TZ: \${TZ}
+      FTLCONF_webserver_api_password: \${WEBPASSWORD}
+      FTLCONF_dns_listeningMode: ALL
+    volumes:
+      - ./etc-pihole:/etc/pihole
+    ports:
+      - "53:53/tcp"
+      - "53:53/udp"
+      - "${WEB_PORT}:80/tcp"
+    cap_add:
+      - NET_ADMIN
+      - SYS_TIME
+      - SYS_NICE
+${_CADDY_NET_BLOCK}${_CADDY_NET_SECTION}
+PIHOLE_COMPOSE
+
+    cat > .env << PIHOLE_ENV
+TZ=${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}
+# Admin web UI password (System Console / login screen).
+WEBPASSWORD='${WEBPASSWORD}'
+CADDY_NET=$SITE_CADDY_NET
+PIHOLE_ENV
+    chmod 600 .env
+
+    mkdir -p etc-pihole
+    chown -R "$ACTUAL_USER:$ACTUAL_USER" "$DIR"
+
+    echo ""
+    log_success "Pi-hole configured at $DIR (DNS on 53, admin UI on port $WEB_PORT)"
+
+    configure_caddy_for_service "Pi-hole" "pihole:80" "pihole"
+    local _caddy_configured=false _caddy_mode=""
+    if declare -p CADDY_SERVICE_CONFIGURED >/dev/null 2>&1; then
+        _caddy_configured="$CADDY_SERVICE_CONFIGURED"
+        _caddy_mode="$CADDY_SERVICE_MODE"
+    fi
+
+    # ── Firewall ─────────────────────────────────────────────────────────────
+    # DNS (53) is opened unconditionally — this is meant to be queried
+    # directly by devices on the network, never fronted by Caddy. The web UI
+    # port only needs opening if Caddy ISN'T fronting it locally (matches the
+    # pattern documented in CLAUDE.md for every other service in this repo).
+    if command -v ufw &>/dev/null; then
+        ufw allow 53/tcp comment "Pi-hole DNS"
+        ufw allow 53/udp comment "Pi-hole DNS"
+        if [ "$_caddy_configured" != "true" ] || [ "$_caddy_mode" = "remote" ]; then
+            ufw allow "${WEB_PORT}/tcp" comment "Pi-hole admin UI"
+        fi
+    fi
+
+    write_readme "$DIR" << MD
+# Pi-hole
+
+Network-wide DNS-based ad/tracker blocking. Standalone install — **not**
+wired into wg-easy, Netbird, or any other VPN here. To actually use it,
+point a device's DNS settings at this box's IP on port 53, either by hand
+per-device or via your router's DHCP DNS setting.
+
+## Access
+- Admin UI: http://localhost:${WEB_PORT} (or via Caddy if configured above)
+- Admin password: see \`.env\` → \`WEBPASSWORD\`
+- DNS: this box's IP, port 53 (standard DNS port — not configurable per-instance)
+
+## Using it
+Nothing points at this automatically. Options, in order of how much you
+want blocked by default:
+- **Per-device**: change that device's DNS server setting to this box's IP.
+- **Whole LAN**: change your router's DHCP-assigned DNS server to this box's IP
+  (every device on that network picks it up automatically going forward).
+- **Over the VPN too**: this needs a manual edit on the wg-easy side — set
+  wg-easy's DNS setting to this box's IP so it's pushed to VPN peers. Not
+  done automatically by this installer, on purpose (you said standalone).
+
+## Port 53 already in use?
+The installer warns but doesn't block if something's already listening on
+53 at install time. The common, harmless case on Ubuntu is systemd-resolved
+bound only to \`127.0.0.53:53\` (loopback stub) — Pi-hole's container
+publishes on the host's real interfaces, not that loopback address, so the
+two normally coexist fine. If something else genuinely holds \`0.0.0.0:53\`,
+free it first or Pi-hole's container won't start:
+\`\`\`
+ss -tulnp | grep ':53 '
+\`\`\`
+
+## Manage
+\`\`\`bash
+cd $DIR
+docker compose up -d      # start
+docker compose down       # stop
+docker compose logs -f    # logs
+docker exec -it pihole pihole -g   # force a blocklist update (gravity)
+\`\`\`
+MD
+
+    local START=""
+    prompt_yn "Start Pi-hole now? (y/n):" "y" START
+    if [ "$START" = "y" ] || [ "$START" = "Y" ]; then
+        docker compose up -d \
+            && log_success "Pi-hole started" \
+            || log_warning "Start failed — check: docker compose logs"
+    fi
+
+    echo ""
+    echo "  Admin UI:  http://localhost:${WEB_PORT}"
+    echo "  Password:  see $DIR/.env"
+    echo "  Nothing points at this DNS server yet — see the README for how to"
+    echo "  actually route devices to it."
+    echo ""
+}
+
+# Run immediately when executed directly (deferred until after function definition)
+[[ "${_RUN_STANDALONE:-0}" == 1 ]] && install_pihole
diff --git a/services/wg-easy.sh b/services/wg-easy.sh
index edf0fc6..846ff7a 100644
--- a/services/wg-easy.sh
+++ b/services/wg-easy.sh
@@ -9,7 +9,17 @@
 # Ported from ubuntu-post-install-24.04-crowdsec.sh (# ---- WG-EASY ----).
 # Own ~/docker/wg-easy/ with a standalone docker-compose.yml + .env.
 # Requires cap_add: NET_ADMIN + SYS_MODULE and ip_forward sysctl.
-# Forward UDP 51820 on your router to this server for external VPN access.
+# Forward UDP 51830 on your router to this server for external VPN access
+# (default — scanned/moved at install time if already taken; see below).
+#
+# Default port deliberately isn't WireGuard's conventional 51820: Netbird's
+# own WireGuard listener also defaults to exactly 51820, and this is the
+# one service in this repo where two completely independent tools (this
+# repo's own wg-easy and a separately-installed Netbird) are both likely to
+# reach for the same hardcoded upstream default with no scanning of their
+# own on Netbird's side. Starting one port family away avoids that
+# collision in the common case; the scan below still moves both further if
+# even the new default is somehow already taken.
 
 # ── Standalone bootstrap ──────────────────────────────────────────────────────
 # Detected when the script is executed directly rather than sourced by setup.sh.
@@ -207,13 +217,13 @@ CBLOCK
 fi
 # ─────────────────────────────────────────────────────────────────────────────
 
-register_service wg-easy utilities "WireGuard VPN with web management UI (wg-easy); peers mesh through this hub automatically, with a script to sync SSH aliases" 51821
+register_service wg-easy utilities "WireGuard VPN with web management UI (wg-easy); peers mesh through this hub automatically, with a script to sync SSH aliases" 51831
 
 install_wg-easy() {
     require_docker || return 1
 
     local WGEASY_DIR="$DOCKER_DIR/wg-easy"
-    local WEB_PORT="51821" VPN_PORT="51820"
+    local WEB_PORT="51831" VPN_PORT="51830"
 
     if [ "$DRY_RUN" = true ]; then
         echo "[DRY-RUN] wg-easy would:"
@@ -221,7 +231,7 @@ install_wg-easy() {
         echo "  - Auto-detect public IP for WG_HOST"
         echo "  - Generate a random web UI password"
         echo "  - Pin WG_DEFAULT_ADDRESS=10.8.0.x (subnet 10.8.0.0/24)"
-        echo "  - Expose port 51821 (web UI) + 51820/udp (VPN), both auto-scanned if occupied"
+        echo "  - Expose port 51831 (web UI) + 51830/udp (VPN), both auto-scanned if occupied"
         echo "  - Require router port-forward: UDP <VPN port> → this server"
         echo "  - Offer a Caddy reverse proxy and to start the container"
         echo "  - Offer to also allow SSH from the VPN subnet (additive, doesn't remove public SSH)"
@@ -232,7 +242,7 @@ install_wg-easy() {
     # Scan for free host ports, moving both together — a plain install
     # shouldn't silently claim a port another already-running service holds.
     # Whatever VPN_PORT ends up as is what needs forwarding on the router
-    # (the messaging below reflects the final value, not the 51820 default).
+    # (the messaging below reflects the final value, not the 51830 default).
     # See CLAUDE.md's "Port collision avoidance" section.
     while port_in_use "$WEB_PORT" || port_in_use "$VPN_PORT" udp; do
         WEB_PORT=$((WEB_PORT + 1))