feat: v0.12.0 Settings window, per-session Remote Control, delete conversations

- Settings (⋯ → Settings…, palette): theme, terminal text size, interface
  size, notifications, Remote Control & privacy. The ⋯ menu shrinks.
- Remote Control per session: registry choice > Settings default >
  DEVDESK_REMOTE_CONTROL. Switching an idle session restarts its Claude
  on the same conversation; busy sessions change at the next start.
  rc_active comes from the running process; RC tag on sessions.
- --delete-convo: remove a conversation's local transcript and subagent
  files; refused while in use. Delete… in Search past conversations.
Closes #61

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WHRLCCdXYm41Qx5kNhehaP

tests/attach.bats

@@ -25,7 +25,9 @@ setup() {
 #!/bin/bash
 printf '%s\n' "$*" >>"$FAKE_LOG/$DEVDESK_SESSION"
 [ -z "${FAKE_EXIT:-}" ] || exit "$FAKE_EXIT"
-exec sleep 300
+# Keeps its arguments in /proc/PID/cmdline (Remote Control is read from there)
+# and ends on SIGTERM, like Claude.
+exec bash -c 'sleep 300 & wait' fake-claude "$@"
 EOF
     chmod +x "$CLAUDE_BIN"
 }
@@ -1338,3 +1340,71 @@ last_json() { tail -n1 <<<"$output"; }
     run devdesk attach --fs-grep alpha - ''
     [ "$status" -ne 0 ]
 }
+
+@test "Remote Control is per session: Settings default, live state, restart when idle (#61)" {
+    start_server
+    devdesk new alpha
+    run claude_args alpha
+    [[ $output != *remote-control* ]]
+    run devdesk attach --list
+    [ "$(jq -c '[.remote_control_default, (.sessions[] | select(.name=="alpha") | .remote_control, .rc_active)]' <<<"$output")" = '[false,false,false]' ]
+
+    # Default on for new sessions
+    run devdesk attach --settings remote-control-default on
+    [ "$(jq -r .remote_control_default <<<"$output")" = true ]
+    devdesk new beta
+    run claude_args beta
+    [[ $output == *"--remote-control devdesk-beta"* ]]
+    for _ in $(seq 1 30); do
+        [ "$(devdesk attach --list | jq -r '.sessions[] | select(.name=="beta") | .rc_active')" = true ] && break
+        sleep 0.1
+    done
+    [ "$(devdesk attach --list | jq -r '.sessions[] | select(.name=="beta") | .rc_active')" = true ]
+
+    # alpha (idle): switching restarts Claude with the flag, no exit menu
+    run devdesk attach --remote-control alpha on
+    [ "$(jq -r .applied <<<"$output")" = now ]
+    for _ in $(seq 1 50); do [ "$(wc -l <"$FAKE_LOG/alpha")" -ge 2 ] && break; sleep 0.1; done
+    [[ "$(tail -n1 "$FAKE_LOG/alpha")" == *"--remote-control devdesk-alpha"* ]]
+    [ ! -e "$DEVDESK_STATE_DIR/restart/alpha" ]
+
+    # working: saved for the next start, Claude untouched
+    mkdir -p "$DEVDESK_STATE_DIR/state"
+    printf '{"state":"working","since":1}' >"$DEVDESK_STATE_DIR/state/alpha.json"
+    run devdesk attach --remote-control alpha off
+    [ "$(jq -r .applied <<<"$output")" = next-start ]
+    sleep 0.5
+    [ "$(wc -l <"$FAKE_LOG/alpha")" -eq 2 ]
+    [ "$(jq -r .sessions.alpha.remote_control "$DEVDESK_STATE_DIR/registry.json")" = false ]
+    # an explicit off beats the default on
+    [ "$(devdesk attach --list | jq -r '.sessions[] | select(.name=="alpha") | .remote_control')" = false ]
+
+    run devdesk attach --remote-control nope on
+    [ "$status" -ne 0 ]
+    run devdesk attach --remote-control alpha maybe
+    [ "$status" -ne 0 ]
+}
+
+@test "delete-convo removes a conversation's local files, never one in use (#61)" {
+    start_server
+    export CLAUDE_CONFIG_DIR="$TMP/claude"
+    id=11111111-2222-3333-4444-555555555555
+    other=99999999-2222-3333-4444-555555555555
+    d="$CLAUDE_CONFIG_DIR/projects/-x"
+    mkdir -p "$d/$id/subagents" "$d/$other"
+    echo '{}' >"$d/$id.jsonl" && echo '{}' >"$d/$id/subagents/a.jsonl" && echo '{}' >"$d/$other.jsonl"
+    devdesk new alpha
+    jq --arg id "$id" '.sessions.alpha.claude_session_id = $id | .sessions.dormant = {dir: "/tmp", claude_session_id: $id}' \
+        "$DEVDESK_STATE_DIR/registry.json" >"$TMP/r" && mv "$TMP/r" "$DEVDESK_STATE_DIR/registry.json"
+    run devdesk attach --delete-convo "$id"
+    [ "$status" -ne 0 ] && [[ $output == *"session alpha is using"* ]] && [ -f "$d/$id.jsonl" ]
+    devdesk end alpha
+    run devdesk attach --delete-convo "$id"
+    [ "$status" -eq 0 ]
+    [ ! -e "$d/$id.jsonl" ] && [ ! -e "$d/$id" ] && [ -f "$d/$other.jsonl" ]
+    [ "$(jq -r '.sessions.dormant.claude_session_id // "none"' "$DEVDESK_STATE_DIR/registry.json")" = none ]
+    run devdesk attach --delete-convo "$id"
+    [ "$status" -ne 0 ]
+    run devdesk attach --delete-convo "../../etc/passwd"
+    [ "$status" -ne 0 ]
+}