fix: v0.5.0 security and robustness fixes from the 2026-10-07 review

- Ask Claude: strip control characters, send as bracketed paste (closes #2)
- end: forget before kill, so ending from inside a session leaves no ghost (closes #3)
- reconnects use `attach --existing` and never resurrect ended/renamed sessions (closes #4)
- repo: git --no-optional-locks, no safe.directory override, refresh on connect/bell/60s (closes #5)
- uploads: unique names via mktemp, cleanup trap on hangup (closes #6)
- clipboard: write-only OSC 52 provider, tmux allow-passthrough off (closes #7)
- uploads: size check up front, streamed slices, idle timeout (closes #9)
- --list: path last in TSV rows, tolerant numbers (closes #10)
- tokens via curl config on stdin; userinfo stripped from remote URLs (closes #11)
- ttyd max clients 32 and at most 2 concurrent side-channel calls (#8; BroadcastChannel polling still open)
- tmux: fixed terminal-features index (no duplicates on re-source), no status-right clock

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/attach.bats

@@ -295,6 +295,58 @@ claude_args() {
     [ "$status" -ne 0 ]
 }
 
+@test "end run from inside the session leaves no ghost registry entry (#3)" {
+    start_server
+    devdesk new alpha
+    tmux -S "$DEVDESK_SOCKET" send-keys -t =alpha:shell "$REPO/bin/devdesk end alpha" Enter
+    for _ in $(seq 1 50); do
+        tmux -S "$DEVDESK_SOCKET" has-session -t =alpha 2>/dev/null || break
+        sleep 0.1
+    done
+    run tmux -S "$DEVDESK_SOCKET" has-session -t =alpha
+    [ "$status" -ne 0 ]
+    [ "$(jq -r '.sessions | has("alpha")' "$DEVDESK_STATE_DIR/registry.json")" = false ]
+}
+
+@test "attach --existing refuses sessions that were ended or renamed (#4)" {
+    start_server
+    run devdesk attach --existing ghost
+    [ "$status" -ne 0 ]
+    [[ $output == *"no longer exists"* ]]
+    run devdesk attach --existing ../x
+    [ "$status" -ne 0 ]
+}
+
+@test "same-second uploads of the same name get distinct files (#6)" {
+    printf 'one' | base64 -w0 >"$TMP/a.b64"
+    printf 'two' | base64 -w0 >"$TMP/b.b64"
+    p1=$(devdesk attach --upload alpha image.png 3 <"$TMP/a.b64" | tail -n1 | jq -r .path)
+    p2=$(devdesk attach --upload alpha image.png 3 <"$TMP/b.b64" | tail -n1 | jq -r .path)
+    [ "$p1" != "$p2" ]
+    [ "$(cat "$p1")" = one ]
+    [ "$(cat "$p2")" = two ]
+    [[ $p1 == *-image.png ]]
+}
+
+@test "a tab in a project path does not break --list (#10)" {
+    mkdir -p "$DEVDESK_PROJECTS_ROOT/odd	name"
+    start_server
+    run devdesk attach --list
+    [ "$status" -eq 0 ]
+    jq -e '.projects | map(.dir) | any(endswith("odd\tname"))' <<<"$output" >/dev/null
+}
+
+@test "repo hides credentials embedded in the remote URL (#11)" {
+    export DEVDESK_GITEA_URL=http://127.0.0.1:9
+    repo="$DEVDESK_PROJECTS_ROOT/alpha"
+    git -C "$repo" init -q -b main
+    git -C "$repo" remote add origin https://jared:hunter2@example.com/x/y.git
+    run devdesk repo alpha
+    [ "$status" -eq 0 ]
+    [ "$(jq -r .remote <<<"$output")" = https://example.com/x/y.git ]
+    [[ $output != *hunter2* ]]
+}
+
 @test "web actions run through attach and answer with JSON" {
     start_server
     run devdesk attach --new web1 alpha