feat(aircoding): AirCoding V2 baseline — deterministic multi-agent architecture

Forked from OpenCode v1.17.4 with multi-agent system:
- 5 agents: aircoding, scheduler, worker, architect, reviewer
- Deterministic DAG scheduling engine (coordinator_tick)
- Tool whitelists as hard enforcement
- AirCoding validation plugin
- V1 requirements: C4 docs, ADR, AGENTS.md, debug-log.md
- Design documents in docs/

packages/tui/src/plugin/slots.tsx

@@ -0,0 +1,65 @@
+import type { TuiPluginApi, TuiSlotContext, TuiSlotMap, TuiSlotProps } from "@opencode-ai/plugin/tui"
+import { createSlot, createSolidSlotRegistry, type JSX, type SolidPlugin } from "@opentui/solid"
+import { createSignal } from "solid-js"
+import { isRecord } from "../util/record"
+
+type RuntimeSlotMap = TuiSlotMap<Record<string, object>>
+type SlotView = <Name extends string>(props: TuiSlotProps<Name>) => JSX.Element | null
+
+export type HostSlotPlugin<Slots extends Record<string, object> = {}> = SolidPlugin<TuiSlotMap<Slots>, TuiSlotContext>
+export type HostPluginApi = TuiPluginApi
+export type HostSlots = {
+  register: {
+    (plugin: HostSlotPlugin): () => void
+    <Slots extends Record<string, object>>(plugin: HostSlotPlugin<Slots>): () => void
+  }
+  dispose: () => void
+}
+
+function isHostSlotPlugin(value: unknown): value is HostSlotPlugin<Record<string, object>> {
+  if (!isRecord(value)) return false
+  if (typeof value.id !== "string") return false
+  return isRecord(value.slots)
+}
+
+export function createSlots() {
+  const empty: SlotView = () => null
+  const [view, setView] = createSignal<SlotView>(empty)
+  const Slot: SlotView = (props) => view()(props)
+
+  return {
+    Slot,
+    setup(api: HostPluginApi): HostSlots {
+      const registry = createSolidSlotRegistry<RuntimeSlotMap, TuiSlotContext>(
+        api.renderer,
+        { theme: api.theme },
+        {
+          onPluginError(event) {
+            console.error("[tui.slot] plugin error", {
+              plugin: event.pluginId,
+              slot: event.slot,
+              phase: event.phase,
+              source: event.source,
+              message: event.error.message,
+            })
+          },
+        },
+      )
+      const slot = createSlot<RuntimeSlotMap, TuiSlotContext>(registry)
+      setView(() => (props: TuiSlotProps<string>) => slot(props))
+
+      return {
+        register(plugin: HostSlotPlugin) {
+          if (!isHostSlotPlugin(plugin)) return () => {}
+          return registry.register(plugin)
+        },
+        dispose() {
+          setView(() => empty)
+        },
+      }
+    },
+    clear() {
+      setView(() => empty)
+    },
+  }
+}