v0.4.0

Added

• Edit project (rename + accent color). The project ⋮ menu gains an Edit project action that
  opens a small dialog to rename the project and pick an accent color — shown as a tint on the
  project's stacked-servers icon in the panel header. Project color is a new optional top-level
  color field in the .devwebui file (any CSS color string; the picker writes #rrggbb, and
  clearing it falls back to the theme accent). Renaming or recoloring rewrites the file in place and
  never restarts running servers. Backed by a new PUT /api/projects/:id endpoint.
• MCP server: 11 new tools (now 29 total). The MCP server gained the config-editing and
  observability tools it was missing, so an agent can do what the GUI can — not just start/stop.
  New: update_project (rename/recolor), add_process, update_process, remove_process,
  set_process_starred, start_project / stop_project (transient, distinct from
  enable/disable), free_port, get_log_file (tail the persisted rotating log), scan_projects,
  and clone_project. Native file-picker dialogs are intentionally excluded (they can't run
  headless). AI_GUIDE.md's tool reference was updated to match.