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
- System prompt injection for routing
- V1 requirements: C4 docs, ADR, AGENTS.md, debug-log.md
- Design documents in docs/

packages/tui/src/prompt/history.tsx

@@ -0,0 +1,111 @@
+import path from "path"
+import { onMount } from "solid-js"
+import { createStore, produce, unwrap } from "solid-js/store"
+import type { AgentPart, FilePart, TextPart } from "@opencode-ai/sdk/v2"
+import { createSimpleContext } from "../context/helper"
+import { useTuiPaths } from "../context/runtime"
+import { appendText, readText, writeText } from "../util/persistence"
+
+export type PromptInfo = {
+  input: string
+  mode?: "normal" | "shell"
+  parts: (
+    | Omit<FilePart, "id" | "messageID" | "sessionID">
+    | Omit<AgentPart, "id" | "messageID" | "sessionID">
+    | (Omit<TextPart, "id" | "messageID" | "sessionID"> & {
+        source?: {
+          text: {
+            start: number
+            end: number
+            value: string
+          }
+        }
+      })
+  )[]
+}
+
+export const MAX_HISTORY_ENTRIES = 50
+
+export function parsePromptHistory(text: string) {
+  return text
+    .split("\n")
+    .filter(Boolean)
+    .map((line) => {
+      try {
+        return JSON.parse(line) as PromptInfo
+      } catch {
+        return undefined
+      }
+    })
+    .filter((line): line is PromptInfo => line !== undefined)
+    .slice(-MAX_HISTORY_ENTRIES)
+}
+
+export function isDuplicateEntry(previous: PromptInfo | undefined, next: PromptInfo): boolean {
+  if (!previous) return false
+  return JSON.stringify(previous) === JSON.stringify(next)
+}
+
+export const { use: usePromptHistory, provider: PromptHistoryProvider } = createSimpleContext({
+  name: "PromptHistory",
+  init: () => {
+    const paths = useTuiPaths()
+    const historyPath = path.join(paths.state, "prompt-history.jsonl")
+    onMount(async () => {
+      const lines = parsePromptHistory(await readText(historyPath).catch(() => ""))
+      setStore("history", lines)
+
+      // Rewrite valid retained entries to self-heal corruption and enforce the limit.
+      if (lines.length > 0)
+        writeText(historyPath, lines.map((line) => JSON.stringify(line)).join("\n") + "\n").catch(() => {})
+    })
+
+    const [store, setStore] = createStore({
+      index: 0,
+      history: [] as PromptInfo[],
+    })
+
+    return {
+      move(direction: 1 | -1, input: string) {
+        if (!store.history.length) return undefined
+        const current = store.history.at(store.index)
+        if (!current) return undefined
+        if (current.input !== input && input.length) return
+        setStore(
+          produce((draft) => {
+            const next = store.index + direction
+            if (Math.abs(next) > store.history.length) return
+            if (next > 0) return
+            draft.index = next
+          }),
+        )
+        if (store.index === 0) return { input: "", parts: [] }
+        return store.history.at(store.index)
+      },
+      append(item: PromptInfo) {
+        const entry = structuredClone(unwrap(item))
+        if (isDuplicateEntry(store.history.at(-1), entry)) {
+          setStore("index", 0)
+          return
+        }
+        let trimmed = false
+        setStore(
+          produce((draft) => {
+            draft.history.push(entry)
+            if (draft.history.length > MAX_HISTORY_ENTRIES) {
+              draft.history = draft.history.slice(-MAX_HISTORY_ENTRIES)
+              trimmed = true
+            }
+            draft.index = 0
+          }),
+        )
+
+        if (trimmed) {
+          writeText(historyPath, store.history.map((line) => JSON.stringify(line)).join("\n") + "\n").catch(() => {})
+          return
+        }
+        appendText(historyPath, JSON.stringify(entry) + "\n").catch(() => {})
+      },
+    }
+  },
+})