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Request = Extract<\n\tHostRequest,\n\t{ op: \"project-repo\" | \"github-list\" | \"github-detail\" | \"github-files\" }\n>;\ntype Snapshot = { value?: unknown; error?: string; loading: boolean };\ntype Saved = { key: string; request: Request; value: unknown };\ntype Entry = {\n\tkey: string;\n\trequest: Request;\n\tsnapshot: Snapshot;\n\tchecked: number;\n\trunning?: Promise;\n\tlisteners: Set<() => void>;\n\tsubscribe: (listener: () => void) => () => void;\n\tread: () => Snapshot;\n};\n\nexport type Query = { value?: T; error?: string; loading: boolean; refresh: () => void };\n\nconst INTERVAL = 3 * 60 * 60 * 1000;\nconst EMPTY: Snapshot = { loading: true };\nconst cache = new Map();\nconst database = new Promise((resolve, reject) => {\n\tconst request = indexedDB.open(`ace:github:${host.url}`, 1);\n\trequest.addEventListener(\n\t\t\"upgradeneeded\",\n\t\t() => request.result.createObjectStore(\"queries\", { keyPath: \"key\" }),\n\t);\n\trequest.addEventListener(\"success\", () => 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{\n\tif (\"repo\" in request) request = { ...request, repo: request.repo.toLowerCase() };\n\tconst key = JSON.stringify(request, Object.keys(request).sort());\n\tconst existing = cache.get(key);\n\tif (existing) return existing;\n\tconst value: Entry = {\n\t\tkey,\n\t\trequest,\n\t\tsnapshot: EMPTY,\n\t\tchecked: 0,\n\t\tlisteners: new Set(),\n\t\tsubscribe(listener) {\n\t\t\tvalue.listeners.add(listener);\n\t\t\treturn () => void value.listeners.delete(listener);\n\t\t},\n\t\tread: () => value.snapshot,\n\t};\n\tcache.set(key, value);\n\treturn value;\n}\n\nfunction publish(value: Entry, snapshot: Snapshot) {\n\tvalue.snapshot = snapshot;\n\tfor (const listener of value.listeners) listener();\n}\n\nconst ready = stored(\"readonly\", (store) => store.getAll()).then((saved) => {\n\tfor (const value of saved || []) {\n\t\tpublish(entry(value.request), { value: value.value, loading: false });\n\t}\n});\n\nasync function load(value: Entry, force = false): Promise {\n\tawait ready;\n\tif (value.running) return value.running;\n\tif (host.status !== \"open\") return;\n\tif (!force && Date.now() - value.checked < INTERVAL) return;\n\tvalue.checked = Date.now();\n\tvalue.running = host.request(value.request).then(\n\t\t(result) => {\n\t\t\tpublish(value, { value: result, loading: false });\n\t\t\tvoid stored(\n\t\t\t\t\"readwrite\",\n\t\t\t\t(store) =>\n\t\t\t\t\tstore.put({ key: value.key, request: value.request, value: result } satisfies Saved),\n\t\t\t);\n\t\t},\n\t\t(error: Error) => {\n\t\t\tpublish(value, { ...value.snapshot, error: error.message, loading: false });\n\t\t},\n\t).finally(() => {\n\t\tvalue.running = undefined;\n\t});\n\tpublish(value, { ...value.snapshot, error: undefined, loading: true });\n\treturn value.running;\n}\n\nlet refreshing: Promise | undefined;\n\n/** Warm both pages without mounting them, and serialize background GitHub requests. */\nfunction refresh(force = false): Promise {\n\tif (refreshing) return refreshing;\n\trefreshing = (async () => {\n\t\tawait ready;\n\t\tfor (const value of cache.values()) {\n\t\t\tif (host.status !== \"open\") break;\n\t\t\tawait load(value, force);\n\t\t\tif (value.request.op !== \"project-repo\") continue;\n\t\t\tconst repo = value.snapshot.value as string | null | undefined;\n\t\t\tif (!repo) continue;\n\t\t\tfor (const kind of [\"issues\", \"prs\"] as const) {\n\t\t\t\tfor (const state of [\"open\", \"closed\", \"all\"] as const) {\n\t\t\t\t\tentry({ op: \"github-list\", repo, kind, state, search: \"\", limit: 50 });\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t})().finally(() => {\n\t\trefreshing = undefined;\n\t});\n\treturn refreshing;\n}\n\nexport function useGithubRefresh(projects: AppProject[]) {\n\tconst source = JSON.stringify(projects.map(({ host, path }) => ({\n\t\top: \"project-repo\",\n\t\thost,\n\t\tproject: path,\n\t})));\n\tuseEffect(() => {\n\t\tfor (const request of JSON.parse(source) as Request[]) entry(request);\n\t\tvoid refresh();\n\t}, [source]);\n\tuseEffect(() => {\n\t\tconst connected = () => {\n\t\t\tfor (const value of cache.values()) {\n\t\t\t\tif (value.snapshot.error) value.checked = 0;\n\t\t\t}\n\t\t\tvoid refresh();\n\t\t};\n\t\tconst wake = () => {\n\t\t\tif (document.visibilityState === \"visible\") void refresh();\n\t\t};\n\t\tconst stop = onOpen(connected);\n\t\tconst timer = setInterval(() => void refresh(true), INTERVAL);\n\t\twindow.addEventListener(\"focus\", wake);\n\t\tdocument.addEventListener(\"visibilitychange\", wake);\n\t\tif (host.status === \"open\") connected();\n\t\treturn () => {\n\t\t\tstop();\n\t\t\tclearInterval(timer);\n\t\t\twindow.removeEventListener(\"focus\", wake);\n\t\t\tdocument.removeEventListener(\"visibilitychange\", wake);\n\t\t};\n\t}, []);\n}\n\nconst inactive = { subscribe: () => () => {}, read: () => EMPTY };\n\nexport function useGithub(request?: Request): Query {\n\tconst value = request ? entry(request) : undefined;\n\tconst store = value || inactive;\n\tconst snapshot = 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