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Check This Mac in Settings.\");\n\tif (result.status !== 0) throw new Error(`${dir} is not inside a Git repository`);\n\treturn result.stdout.trim();\n}\n\n/** Hosted channels are always reachable; local ones run while their worker does. */\nexport function isRunning(id: string): boolean {\n\tif (catalog.read(id).hosted) return true;\n\treturn existsSync(catalog.paths(id).socket) && isWorkerAlive(id);\n}\n\n/** PID liveness also covers startup, before the worker has opened its listener. */\nexport function isWorkerAlive(id: string): boolean {\n\ttry {\n\t\tconst owner = Number(readFileSync(catalog.paths(id).pid, \"utf8\"));\n\t\tif (!Number.isSafeInteger(owner) || owner <= 0) return false;\n\t\tprocess.kill(owner, 0);\n\t\treturn true;\n\t} catch {\n\t\treturn false;\n\t}\n}\n\n/** What the hosting service stores for a channel whose workspace is this host. */\nexport function hostedConfig(record: catalog.Listing) {\n\treturn {\n\t\tversion: 2,\n\t\tid: record.id,\n\t\tname: record.name,\n\t\tprefix: record.prefix,\n\t\tnamed: record.named,\n\t\towner: record.owner,\n\t\tproject: record.project,\n\t\tlanes: catalog.paths(record.id).lanes,\n\t\tmodel: record.model,\n\t\tworkspace: `host:${hostname()}`,\n\t};\n}\n\n/** Create a channel on a hosting service, with this host as its workspace. */\nexport async function host(\n\tdir: string,\n\tmodel: ModelRef | undefined,\n\tname: string | undefined,\n\turl: string,\n) {\n\t// Saving the record starts the workspace link, so the service must have the channel first.\n\tconst record = catalog.draft(dir, model, name, url.replace(/\\/$/, \"\"));\n\tconst response = await fetch(`${record.hosted}/channels/${record.id}`, {\n\t\tmethod: \"POST\",\n\t\theaders: await hostedAuth(),\n\t\tbody: JSON.stringify(hostedConfig(record)),\n\t}).catch((error: Error) => new Response(error.message, { status: 502 }));\n\tif (!response.ok) {\n\t\tthrow new Error(`The hosting service refused the channel: ${await response.text()}`);\n\t}\n\treturn catalog.save(record);\n}\n\nexport async function kill(id: string): Promise {\n\tif (catalog.read(id).hosted) return request(id, { op: \"kill\" });\n\tconst connection = await Connection.running(id);\n\tif (!connection) return;\n\tlet timer: ReturnType | undefined;\n\ttry {\n\t\tawait Promise.race([\n\t\t\t(async () => {\n\t\t\t\tawait connection.request({ op: \"kill\" });\n\t\t\t\t// The reply only confirms the abort; the worker closes sockets after storage and tools.\n\t\t\t\tawait connection.closed;\n\t\t\t})(),\n\t\t\tnew Promise((_, reject) => {\n\t\t\t\ttimer = setTimeout(\n\t\t\t\t\t() => reject(new Error(`Channel ${id} did not close within 10 seconds`)),\n\t\t\t\t\t10_000,\n\t\t\t\t);\n\t\t\t}),\n\t\t]);\n\t} finally {\n\t\tclearTimeout(timer);\n\t\tconnection.close();\n\t}\n}\n\nexport async function archive(id: string, archived: boolean): Promise {\n\tif (archived) await kill(id);\n\tconst record = { ...catalog.read(id), archived };\n\tcatalog.write(record);\n\treturn record;\n}\n\n/** Dormant workers retire only once idle, so only a live worker can have work in progress. */\nasync function busy(id: string): Promise {\n\tconst { hosted } = catalog.read(id);\n\tconst connection = hosted ? await Connection.hosted(hosted, id) : await Connection.running(id);\n\tif (!connection) return false;\n\ttry {\n\t\tconst { chats } = await connection.request({ op: \"info\" });\n\t\treturn chats.some((chat) => chat.busy);\n\t} finally {\n\t\tconnection.close();\n\t}\n}\n\n/** Archives a project's channels on this host that have no work in progress; returns their IDs. */\nexport async function archiveInactive(root: string): Promise {\n\tconst open = catalog.list().filter((record) =>\n\t\t!record.archived && checkout(record.project).root === root\n\t);\n\tconst idle = await Promise.all(open.map(async ({ id }) => (await busy(id)) ? undefined : id));\n\tconst ids = idle.filter((id) => id !== undefined);\n\tawait Promise.all(ids.map((id) => archive(id, true)));\n\treturn ids;\n}\n\n/**\n * Kills the worker and keeps its lock, so a client still watching the channel cannot start another\n * worker over storage being removed. A worker that started before the lock is killed in turn.\n */\nasync function hold(id: string): Promise {\n\tfor (let wait = 50; wait < 5000; wait *= 2) {\n\t\tawait kill(id);\n\t\tif (catalog.lock(id)) return;\n\t\tawait Bun.sleep(wait);\n\t}\n\tthrow new Error(\"The channel's worker kept restarting; try deleting it again\");\n}\n\n/** Removes the channel and its lane worktrees; lane branches stay in the project. */\nexport async function remove(id: string): Promise {\n\tconst { project, hosted } = catalog.read(id);\n\tif (hosted) {\n\t\tawait kill(id);\n\t\tconst response = await fetch(`${hosted}/channels/${id}`, {\n\t\t\tmethod: \"DELETE\",\n\t\t\theaders: await hostedAuth(),\n\t\t});\n\t\tif (!response.ok && response.status !== 404) {\n\t\t\tthrow new Error(`The hosting service did not delete the channel: ${response.status}`);\n\t\t}\n\t} else await hold(id);\n\tconst { lanes, pid } = catalog.paths(id);\n\ttry {\n\t\tfor (const lane of existsSync(lanes) ? readdirSync(lanes) : []) 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