feat(cli): support paseo . to open desktop app with project (#189)

* fix(app): reorder settings sections for better grouping

* feat(app): add setup hint and paseo.sh link on mobile welcome screen

New app store users land on the welcome screen with no context. Show a
brief explanation that the desktop app or server is needed, plus a link
to paseo.sh — only on mobile (iOS/Android), hidden on web/desktop.

* docs(release): add pre-release sanity check and clarify changelog scope

Add a Codex 5.4 review step before cutting releases to catch breaking
changes and backward-compatibility issues (mobile apps lag behind
desktop/daemon updates). Clarify that the changelog always covers the
delta from the previous stable release, not from the last RC.

* feat(cli): support `paseo .` to open desktop app with project directory

Similar to VS Code's `code .`, users can now type `paseo .` or
`paseo <path>` to open the Paseo desktop app with that directory as
the active project.

- Desktop shims detect path-like first args and launch Electron in GUI
  mode with --open-project instead of CLI passthrough mode
- Electron main process parses --open-project, sends IPC event to
  renderer, and forwards via second-instance for the already-running case
- Renderer OpenProjectListener reuses existing openProject() RPC flow
- Standalone CLI discovers the desktop app per platform and spawns it

packages/desktop/bin/paseo

@@ -31,4 +31,30 @@ else
   exit 1
 fi
 
+case "${1:-}" in
+  ./*|../*|.|..|/*|~|~/*)
+    case "$1" in
+      ~) ARG_PATH="$HOME" ;;
+      ~/*) ARG_PATH="$HOME/${1#\~/}" ;;
+      *) ARG_PATH="$1" ;;
+    esac
+    if RESOLVED_PATH=$(CDPATH= cd -- "$ARG_PATH" 2>/dev/null && pwd); then
+      :
+    elif command -v realpath >/dev/null 2>&1; then
+      RESOLVED_PATH=$(realpath "$ARG_PATH" 2>/dev/null || printf "%s" "$ARG_PATH")
+    else
+      RESOLVED_PATH=$ARG_PATH
+    fi
+    if [ ! -e "${RESOLVED_PATH}" ]; then
+      echo "Path does not exist: ${RESOLVED_PATH}" >&2
+      exit 1
+    fi
+    if [ ! -d "${RESOLVED_PATH}" ]; then
+      echo "Not a directory: ${RESOLVED_PATH}" >&2
+      exit 1
+    fi
+    exec "${APP_EXECUTABLE}" --open-project "${RESOLVED_PATH}"
+    ;;
+esac
+
 exec env PASEO_DESKTOP_CLI=1 "${APP_EXECUTABLE}" "$@"