OpenCode compatibility and permission precedence

Fix plural directory support (commands, agents, plugins) for OpenCode compatibility,
correct permission merge order to prioritize project config, and improve stats error handling

comprehensive docs overhaul, TUI navigation improvements, and pricing…

… fixes

fix circular dependency in SDK build by lazy-loading commands

- Lazy-load RunCommand and TuiThreadCommand to avoid importing @arctic-cli/sdk/v2 at module load time
- Move createArcticClient import in Plugin to dynamic import
- Fixes build error when SDK needs to generate OpenAPI spec from arctic CLI
- Resolves GitHub issue arctic-cli#6 (Arch Linux PKGBUILD build failure)

add interactive buttons to CLI homepage for quick access to common ac…

…tions

feat: add /stats command with activity heatmap and improve TUI messag…

…e styling

fix: preserve agent selection and improve multi-connection UX, addres…

…sing usage limits and copy behavior

feat: add MiniMax Coding Plan with usage limits and colored sidebar d…

…isplay

feat: add text selection, MCP management, and Discord community integ…

…ration

  - Add double and triple-click support for word and line selection in TUI
  - Implement comprehensive MCP server management (add, remove, list with CLI and interactive modes)
  - Add /usage command hint below input for better discoverability
  - Migrate from Lucide to Hugeicons for consistent iconography
  - Integrate Discord server across documentation and landing page
  - Improve config file handling to support both arctic.json and arctic.jsonc

fix: improve TUI exit flow and refactor permission system

fix: improve TUI UX and usage limits display