shellX v0.2.1

Added

• Multi-provider agent sessions for Codex CLI, Claude Code, and
  Antigravity CLI, with streaming output routed into the active ShellX
  session, provider-reported token usage, native resume metadata, and tab-close
  cleanup for active provider child processes.
• Composer Agent picker for choosing Grok, Claude Code, Codex CLI, or
  Antigravity per session tab.
• Agent CLI discovery and health checks for Local, WSL, and SSH
  environments, including Grok Build CLI availability.
• Model instruction cards for named provider/media handoffs, including
  direct GPT Image, Grok Imagine image, and Grok Imagine video recipes,
  explicit-only routing, and no-silent-fallback policy.
• ShellX host MCP tooling for provider runs, so Codex and Claude sessions can
  inspect ShellX capabilities when their native CLIs expose MCP support, while
  distinguishing provider-native file tools from ShellX host fs_* tools.
• Explicit provider-to-Grok handoff support for user-approved prompts into an
  already-connected Grok tab, including Grok Imagine workflows, current-tab
  routing, and Local/WSL/SSH context preservation.
• Explicit provider-to-provider handoff support, including Claude-to-Codex
  media workflows when the selected environment exposes those tools.
• Generated media and attachment assets are tracked across sessions for reuse
  in provider workflows, including generated Codex GPT Image PNGs.
• Provider chat output preserves generated media paths and ShellX tab/run
  identifiers for preview and audit use.
• File and folder pickers are environment-aware across Local, WSL, and SSH
  provider tabs.
• Debug API Files pane listings are exposed as JSON for local, WSL, and SSH
  checks.
• Voice-chat playback supports provider sessions, so Claude/Codex text replies
  can use the existing ShellX spoken-response loop.

Fixed

• New session and project tabs stay idle until the user sends a prompt or
  explicitly connects the agent.
• Work Preview starts WSL/SSH web app previews without shell quoting failures
  in generated dev-server commands.
• Grok command inventory, MCP schema discovery, and ShellX status probes stay
  out of the main chat stream; out-of-order tool updates no longer render as
  blank tool cards.
• Long /build runs keep in-flight Agent work tracked after wait-budget
  snapshots and clean up running Agent subagents when stopped.
• SSH folder browsing works against macOS targets that use BSD find.
• Generated asset lists no longer show regex/search patterns as phantom images.
• Legacy connection presets are imported into the ShellX data store when both
  old and new local data folders exist.
• SSH Grok sessions now find user-level uvx/npx launchers for marketplace
  MCP servers, so remote Fetch/Git tools do not appear missing when they live
  under ~/.local/bin or an NVM/Homebrew path.
• macOS contributor source builds compile cleanly again (#1).