…ith rename

- Follow the system color mode and react to changes at runtime: the UI
  chrome (CSS variables) and every xterm instance switch between dark and
  a GitHub-light palette without reload, driven by prefers-color-scheme.
- Tab labels show the live foreground process of the controlling TTY
  (e.g. bash → vim → bash), polled from node-pty for PTY sessions.
- Custom renaming: double-click a tab to edit inline; backed by a new
  `devframes-plugin-terminals:rename` RPC. Display precedence is
  customTitle > processName > base title.

Adds processName/customTitle to the session descriptor, a getProcessName
hook on the PTY backend, an unref'd poll timer (cleared on exit/restart/
remove/dispose), and tests for process-name tracking and renaming.

…etadata, per-package typecheck)

Merge upstream/main and reconcile the plugin with its newer baseline:
- resolve to nostics ^1.1.4 via the catalog and regenerate the lockfile
  (fixes the broken merged lockfile that failed frozen CI installs).
- supply the now-required DevframeDefinition metadata (version,
  packageName, homepage, description) from package.json.
- add a `typecheck` script and switch tsconfig to explicit include/exclude
  (drop composite) so `turbo run typecheck` passes for the package.
- refresh tsnapi snapshots for the nostics v1 diagnostics handle shape.

- Gate the PTY-semantics tests (stdin echo, SIGWINCH resize, foreground
  process name) to POSIX; Windows keeps the isTTY interactive coverage.
  These rely on behaviours conpty doesn't provide (no SIGWINCH; `.process`
  returns the TERM name).
- Ignore the Windows `xterm-256color` TERM-name fallback so it never
  surfaces as a session label.
- Dispose the terminal manager on test server close so spawned PTY/piped
  child processes don't leak across runs.

…, + tab

- Mirror the active terminal into the URL hash (`#id=<sessionId>`) and react
  to external hash changes (links, back/forward, manual edits).
- Spawn and select a fresh interactive session on every page load.
- Move the "new terminal" affordance to a compact "+" pinned at the end of
  the tab strip.

Avoids refocusing the active terminal on background shared-state updates by
only fitting/focusing when the selection actually changes.

The prebuilt PTY binary isn't published for every Node ABI on every OS
(e.g. Node 26 on Windows 404s and the source-build fallback crashes),
which failed `pnpm install`. node-pty is already lazily imported with a
piped-child fallback, so move it to optionalDependencies — a missing
prebuild is now non-fatal.

Gate the PTY tests on actual backend availability: the real-TTY check runs
wherever a PTY exists (incl. Windows conpty), while the POSIX-only
semantics (SIGWINCH, foreground process name, stdin echo) stay POSIX-gated.

…d of spawning

A reload was always starting a new shell: the sessions shared state
resolves with its empty initial value and backfills the server's sessions
asynchronously, so the autostart check always saw an empty list.

Decide autostart from the authoritative `list` RPC and seed the initial
render from it, so a refresh restores the persisted sessions (reselecting
the URL-hashed one) and only spawns a shell when none exist.

Restyle the terminal panel after the antfu / vitejs-devtools (rolldown)
aesthetic:

- Adopt presetWind4 with semantic tokens (bg-base, bg-secondary,
  border-base, color-active, op-fade, op-mute) and a green primary accent;
  light and dark are designed together and driven by the `.dark` class.
- Replace ad-hoc inline color classes with the token system and reusable
  shortcuts (btn-action, btn-icon, tab-item, status dots, mode badges).
- Cleaner shell: brand + session tabs with status dots and hover-close, a
  "+" icon button, a presets dropdown, and a details toolbar with restart /
  kill icon actions. Phosphor duotone icons throughout.
- Add a global stylesheet (base shell, themed scrollbars, xterm host) and
  tie the xterm themes to the app surface (off-black #111, primary cursor).