v0.19.0

RoomKit 0.19.0 adds a Discord bot channel, supervised multi-agent orchestration with structured-result handoff, per-conversation tool memory, and Telegram Rich Messages — plus realtime and supervisor reliability fixes.

Added

• Discord bot channel. A first-class Discord integration over the gateway (discord.py), wired as a source + REST provider sharing one discord.Client. Inbound messages (text, attachments, replies) and reactions arrive through the gateway; outbound supports text, embeds (RichContent), media uploads, and replies. pip install roomkit[discord].
• Supervised orchestration (hub-and-spoke). In synchronous sequential mode the supervisor acts as a reviewer between every worker: it frames each task, reviews the worker's output with a strict APPROVE/REJECT verdict, sends rework with feedback up to max_revisions, and carries the validated result into the next worker's brief. On exhaustion the chain stops and reports an honest failure rather than presenting unreviewed work. New Supervisor parameters task_timeout (per-worker budget, default 120s) and max_revisions (default 3).
• Structured-result handoff. kit.delegate(require_structured_result=True) forces a delegated worker to return its work by calling a submit_result tool — a structured, parseable handoff and a guaranteed result (the worker can't punt with a question). A completion guard re-prompts the worker and, on exhaustion, submits an orchestration-level failure carrying its last output. Capture is delivery-agnostic (a function-calling tool call, or a claude_code worker's persisted trace).
• Per-conversation tool memory. AIChannel keeps a per-room record of tool usage and uses it two ways: a compact "what you did" digest injected into the system prompt, and sticky re-exposure of recently-used tool names so a tool used once stays callable while Tool Search hides the rest of the catalogue.
• Parent → child delegation context. A delegated child room inherits the parent room's context envelope, cascading verbatim through nested delegations. The worker's full trace (tool calls + messages) is persisted in its child room.
• Worker capabilities for the supervisor. The supervisor is given each worker's role and concise purpose, so it frames tasks knowing what each worker does rather than from a bare label.
• Telegram Rich Messages. Opt-in TelegramConfig(rich_messages=True) for Bot API 10.1 native tables and headings, with automatic fallback to entity formatting. Outbound Markdown is rendered into Telegram entities via telegramify-markdown (bundled in roomkit[telegram]).
• Ollama sampling options. OllamaConfig gains temperature, num_ctx, top_p, top_k, min_p, and keep_alive — with numeric-string coercion so a unit-less "-1" / "0" isn't rejected as a malformed Go duration.
• Agent display name. Optional Agent(name=...) — a human-readable label, distinct from channel_id and role, for attributing a step in orchestration timelines.

Fixed

• Realtime tool schema. Strip non-API tool keys (e.g. Tool Search tags) from the OpenAI / xAI realtime session.tools payload, which the API rejects as unknown parameters.
• Supervisor recursion. delegate_workers no longer re-fires from inside a delegated sub-task room (delegate-within-delegate), in both strategy-tool and supervised-review paths.
• Supervisor stuck / hang. The supervisor runs dispatch/review without its own delegate_workers tool; a worker infra failure aborts the chain instead of waiting forever; and the completion hook fires when a delegation is cancelled or times out, so a consumer's step doesn't stay stuck on "running".
• submit_result trace scan caps its cursor to the int32 range (the Postgres store binds before_index as int4).

Full Changelog: v0.18.0...v0.19.0