Add OpenDots agent workspace template with Spaces, Threads, and per-Dot computers

[jerelvelarde]

What changes

Adds OpenDots, a self-hosted template for persistent agent conversations and working documents. Dots and Spaces are separate in navigation: Dots open specialist conversations, Spaces expand into pages, and recent chats identify their Dot. Each Dot has explicit access to one or more Spaces and a default destination for saved pages. Existing installations retain their original grants and conversation IDs.

• CopilotKit Threads persist text and page conversations; each page/Dot pair reuses its canonical thread. Server page tools enforce current Space access, and permission changes stop active work.
• Spaces include a searchable grid/list library, nested pages, a visual editor with slash commands, Markdown source mode, autosave, conflict checks, and contextual page chat.
• Per-Dot computers follow OpenBot's supervisor pattern, with persistent browser/files, separate browser/file/shell permissions, owner takeover, and an activity log. The template also includes Channels SDK Slack wiring based on OpenTag, voice with delegated compute, recurring work, and explicit memories.
• Updated plush avatars and README GIF/MP4 demos show the current layout, a live specialist follow-up, and a live page-context question continued in Dot chat. MIT attribution remains Atai Barkai.

Validation

• Formatting, lint, explicit typecheck, 119 tests across 28 files, production client/server build, and isolated lockfile installation passed locally.
• App, browser, hardened supervisor, and pinned OpenBot computer images built successfully on arm64; workflow lint passed. Live provisioned computer behavior remains a separate setup check.
• Tests cover legacy Space-access migration, multi-Space grants, revocation, canonical thread reuse, page revision conflicts, and computer policy boundaries.
• Recorded with a dedicated Intelligence project and live model credentials. Verified specialist replies, saved-page context, persisted history, and current browser navigation.
• Updated clips: specialist chat (16 seconds) and Spaces/page chat (24 seconds).

Scope and remaining setup

This is a single-owner template, not a hosted product. Slack, realtime calls, and per-Dot computers require separate service configuration and have not been verified against live provisioned services in this run. Multi-user sharing, uploads, and automatic specialist coordination are outside this PR. Production builds currently warn about large client chunks.