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db",[1131,1304,1305],{"class":1141},".",[1131,1307,1308],{"class":1219},"openVault",[1131,1310,1222],{"class":1145},[1131,1312,1259],{"class":1141},[1131,1314,1315],{"class":1169},"notes",[1131,1317,1259],{"class":1141},[1131,1319,1287],{"class":1145},[941,1321,1322,1325,1326,1329,1330,1334],{},[956,1323,1324],{},"writePod"," and ",[956,1327,1328],{},"readPod"," are also available from the ",[953,1331,1332],{"href":630},[956,1333,962],{},"\nsubpath if you prefer to keep the root barrel small.",[1025,1336,1338],{"id":1337},"tier-1-the-download-which-works-everywhere","Tier 1 — the download, which works everywhere",[1122,1340,1342],{"className":1124,"code":1341,"language":1126,"meta":1127,"style":1127},"const bytes = await writePod(vault)\nconst url = URL.createObjectURL(new Blob([bytes], { type: 'application\u002Foctet-stream' }))\nconst a = document.createElement('a')\na.href = url\na.download = podFilename('notes')\na.click()\nURL.revokeObjectURL(url)\n",[956,1343,1344,1360,1409,1436,1450,1474,1486],{"__ignoreMap":1127},[1131,1345,1346,1348,1351,1353,1355,1357],{"class":1133,"line":1134},[1131,1347,1207],{"class":1206},[1131,1349,1350],{"class":1145}," bytes ",[1131,1352,1213],{"class":1141},[1131,1354,1216],{"class":1137},[1131,1356,1152],{"class":1219},[1131,1358,1359],{"class":1145},"(vault)\n",[1131,1361,1362,1364,1367,1369,1372,1374,1377,1379,1382,1385,1388,1390,1392,1395,1397,1399,1402,1404,1406],{"class":1133,"line":1176},[1131,1363,1207],{"class":1206},[1131,1365,1366],{"class":1145}," url ",[1131,1368,1213],{"class":1141},[1131,1370,1371],{"class":1145}," URL",[1131,1373,1305],{"class":1141},[1131,1375,1376],{"class":1219},"createObjectURL",[1131,1378,1222],{"class":1145},[1131,1380,1381],{"class":1141},"new",[1131,1383,1384],{"class":1219}," Blob",[1131,1386,1387],{"class":1145},"([bytes]",[1131,1389,1149],{"class":1141},[1131,1391,1142],{"class":1141},[1131,1393,1394],{"class":1231}," type",[1131,1396,1235],{"class":1141},[1131,1398,1166],{"class":1141},[1131,1400,1401],{"class":1169},"application\u002Foctet-stream",[1131,1403,1259],{"class":1141},[1131,1405,1160],{"class":1141},[1131,1407,1408],{"class":1145},"))\n",[1131,1410,1411,1413,1416,1418,1421,1423,1426,1428,1430,1432,1434],{"class":1133,"line":1196},[1131,1412,1207],{"class":1206},[1131,1414,1415],{"class":1145}," a ",[1131,1417,1213],{"class":1141},[1131,1419,1420],{"class":1145}," document",[1131,1422,1305],{"class":1141},[1131,1424,1425],{"class":1219},"createElement",[1131,1427,1222],{"class":1145},[1131,1429,1259],{"class":1141},[1131,1431,953],{"class":1169},[1131,1433,1259],{"class":1141},[1131,1435,1287],{"class":1145},[1131,1437,1438,1440,1442,1445,1447],{"class":1133,"line":1203},[1131,1439,953],{"class":1145},[1131,1441,1305],{"class":1141},[1131,1443,1444],{"class":1145},"href ",[1131,1446,1213],{"class":1141},[1131,1448,1449],{"class":1145}," url\n",[1131,1451,1452,1454,1456,1459,1461,1464,1466,1468,1470,1472],{"class":1133,"line":1228},[1131,1453,953],{"class":1145},[1131,1455,1305],{"class":1141},[1131,1457,1458],{"class":1145},"download ",[1131,1460,1213],{"class":1141},[1131,1462,1463],{"class":1219}," podFilename",[1131,1465,1222],{"class":1145},[1131,1467,1259],{"class":1141},[1131,1469,1315],{"class":1169},[1131,1471,1259],{"class":1141},[1131,1473,1287],{"class":1145},[1131,1475,1476,1478,1480,1483],{"class":1133,"line":1246},[1131,1477,953],{"class":1145},[1131,1479,1305],{"class":1141},[1131,1481,1482],{"class":1219},"click",[1131,1484,1485],{"class":1145},"()\n",[1131,1487,1488,1491,1493,1496],{"class":1133,"line":1264},[1131,1489,1490],{"class":1145},"URL",[1131,1492,1305],{"class":1141},[1131,1494,1495],{"class":1219},"revokeObjectURL",[1131,1497,1498],{"class":1145},"(url)\n",[941,1500,1501,1503,1504,1507,1508,1511,1512,1514,1515,1518,1519,1522,1523,1526],{},[956,1502,1324],{}," is ",[944,1505,1506],{},"async"," — it returns a ",[956,1509,1510],{},"Promise\u003CUint8Array>",", not bytes. The file is a\n",[956,1513,1013],{}," container: magic ",[956,1516,1517],{},"NDB1",", a minimum-disclosure unencrypted header, and a\ncompressed body. There is no ",[956,1520,1521],{},".pod"," and no ",[956,1524,1525],{},".bundle"," extension.",[941,1528,1529,1530,1533,1534,1537,1538,1541],{},"::: warning A timer cannot click this link\nA ",[956,1531,1532],{},"\u003Ca download>"," that fires from a user gesture downloads. The same line on a\n",[956,1535,1536],{},"setInterval"," does not — browsers block downloads with no user activation behind it.\n",[944,1539,1540],{},"A pure SPA therefore cannot back itself up on a schedule",", and no amount of code\nchanges that. It is the reason tier 2 exists.\n:::",[1025,1543,1545],{"id":1544},"tier-2-one-grant-then-unattended","Tier 2 — one grant, then unattended",[941,1547,1548,1552,1553,1556,1557,1560],{},[953,1549,1550],{"href":355},[956,1551,968],{}," is usually read as a ",[991,1554,1555],{},"store",". Here it\nis a ",[944,1558,1559],{},"backup target",", which is a much easier thing for it to be: a pod write is one\nwhole file, so none of the per-record concerns that make a filesystem an awkward primary\nstore apply.",[1122,1562,1564],{"className":1124,"code":1563,"language":1126,"meta":1127,"style":1127},"import { rememberDirectory, recallDirectory } from '@noy-db\u002Fto-browser-fs'\n\n\u002F\u002F Once, from a click: the user picks a folder and the handle is persisted in IDB.\nasync function grantBackupFolder() {\n  const handle = await (window as any).showDirectoryPicker({ mode: 'readwrite' })\n  await rememberDirectory('backups', handle)\n}\n\n\u002F\u002F Afterwards, with no interaction — including on a timer.\nasync function backupTo(handle: any, name: string, bytes: Uint8Array) {\n  const file = await handle.getFileHandle(name, { create: true })\n  const w = await file.createWritable()\n  await w.write(bytes)\n  await w.close()\n}\n\nconst handle = await recallDirectory('backups')\nif (handle) {\n  await backupTo(handle, podFilename('notes'), await writePod(vault))\n} else {\n  \u002F\u002F No grant yet, or a browser without the API — fall back to tier 1.\n}\n",[956,1565,1566,1590,1594,1600,1615,1670,1692,1697,1701,1706,1750,1790,1811,1830,1844,1849,1854,1878,1889,1927,1937,1943],{"__ignoreMap":1127},[1131,1567,1568,1570,1572,1575,1577,1580,1582,1584,1586,1588],{"class":1133,"line":1134},[1131,1569,1138],{"class":1137},[1131,1571,1142],{"class":1141},[1131,1573,1574],{"class":1145}," rememberDirectory",[1131,1576,1149],{"class":1141},[1131,1578,1579],{"class":1145}," recallDirectory",[1131,1581,1160],{"class":1141},[1131,1583,1163],{"class":1137},[1131,1585,1166],{"class":1141},[1131,1587,968],{"class":1169},[1131,1589,1173],{"class":1141},[1131,1591,1592],{"class":1133,"line":1176},[1131,1593,1200],{"emptyLinePlaceholder":1199},[1131,1595,1596],{"class":1133,"line":1196},[1131,1597,1599],{"class":1598},"sHwdD","\u002F\u002F Once, from a click: the user picks a folder and the handle is persisted in IDB.\n",[1131,1601,1602,1604,1607,1610,1612],{"class":1133,"line":1203},[1131,1603,1506],{"class":1206},[1131,1605,1606],{"class":1206}," function",[1131,1608,1609],{"class":1219}," grantBackupFolder",[1131,1611,1240],{"class":1141},[1131,1613,1614],{"class":1141}," {\n",[1131,1616,1617,1620,1623,1626,1628,1631,1634,1637,1641,1644,1646,1649,1651,1654,1657,1659,1661,1664,1666,1668],{"class":1133,"line":1228},[1131,1618,1619],{"class":1206},"  const",[1131,1621,1622],{"class":1145}," handle",[1131,1624,1625],{"class":1141}," =",[1131,1627,1216],{"class":1137},[1131,1629,1630],{"class":1231}," (",[1131,1632,1633],{"class":1145},"window",[1131,1635,1636],{"class":1137}," as",[1131,1638,1640],{"class":1639},"sBMFI"," any",[1131,1642,1643],{"class":1231},")",[1131,1645,1305],{"class":1141},[1131,1647,1648],{"class":1219},"showDirectoryPicker",[1131,1650,1222],{"class":1231},[1131,1652,1653],{"class":1141},"{",[1131,1655,1656],{"class":1231}," mode",[1131,1658,1235],{"class":1141},[1131,1660,1166],{"class":1141},[1131,1662,1663],{"class":1169},"readwrite",[1131,1665,1259],{"class":1141},[1131,1667,1160],{"class":1141},[1131,1669,1287],{"class":1231},[1131,1671,1672,1675,1677,1679,1681,1684,1686,1688,1690],{"class":1133,"line":1246},[1131,1673,1674],{"class":1137},"  await",[1131,1676,1574],{"class":1219},[1131,1678,1222],{"class":1231},[1131,1680,1259],{"class":1141},[1131,1682,1683],{"class":1169},"backups",[1131,1685,1259],{"class":1141},[1131,1687,1149],{"class":1141},[1131,1689,1622],{"class":1145},[1131,1691,1287],{"class":1231},[1131,1693,1694],{"class":1133,"line":1264},[1131,1695,1696],{"class":1141},"}\n",[1131,1698,1699],{"class":1133,"line":1281},[1131,1700,1200],{"emptyLinePlaceholder":1199},[1131,1702,1703],{"class":1133,"line":1290},[1131,1704,1705],{"class":1598},"\u002F\u002F Afterwards, with no interaction — including on a timer.\n",[1131,1707,1709,1711,1713,1716,1718,1722,1724,1726,1728,1731,1733,1736,1738,1741,1743,1746,1748],{"class":1133,"line":1708},10,[1131,1710,1506],{"class":1206},[1131,1712,1606],{"class":1206},[1131,1714,1715],{"class":1219}," backupTo",[1131,1717,1222],{"class":1141},[1131,1719,1721],{"class":1720},"sHdIc","handle",[1131,1723,1235],{"class":1141},[1131,1725,1640],{"class":1639},[1131,1727,1149],{"class":1141},[1131,1729,1730],{"class":1720}," name",[1131,1732,1235],{"class":1141},[1131,1734,1735],{"class":1639}," string",[1131,1737,1149],{"class":1141},[1131,1739,1740],{"class":1720}," bytes",[1131,1742,1235],{"class":1141},[1131,1744,1745],{"class":1639}," Uint8Array",[1131,1747,1643],{"class":1141},[1131,1749,1614],{"class":1141},[1131,1751,1753,1755,1757,1759,1761,1763,1765,1768,1770,1773,1775,1777,1780,1782,1786,1788],{"class":1133,"line":1752},11,[1131,1754,1619],{"class":1206},[1131,1756,1082],{"class":1145},[1131,1758,1625],{"class":1141},[1131,1760,1216],{"class":1137},[1131,1762,1622],{"class":1145},[1131,1764,1305],{"class":1141},[1131,1766,1767],{"class":1219},"getFileHandle",[1131,1769,1222],{"class":1231},[1131,1771,1772],{"class":1145},"name",[1131,1774,1149],{"class":1141},[1131,1776,1142],{"class":1141},[1131,1778,1779],{"class":1231}," create",[1131,1781,1235],{"class":1141},[1131,1783,1785],{"class":1784},"sfNiH"," true",[1131,1787,1160],{"class":1141},[1131,1789,1287],{"class":1231},[1131,1791,1793,1795,1798,1800,1802,1804,1806,1809],{"class":1133,"line":1792},12,[1131,1794,1619],{"class":1206},[1131,1796,1797],{"class":1145}," w",[1131,1799,1625],{"class":1141},[1131,1801,1216],{"class":1137},[1131,1803,1082],{"class":1145},[1131,1805,1305],{"class":1141},[1131,1807,1808],{"class":1219},"createWritable",[1131,1810,1485],{"class":1231},[1131,1812,1814,1816,1818,1820,1823,1825,1828],{"class":1133,"line":1813},13,[1131,1815,1674],{"class":1137},[1131,1817,1797],{"class":1145},[1131,1819,1305],{"class":1141},[1131,1821,1822],{"class":1219},"write",[1131,1824,1222],{"class":1231},[1131,1826,1827],{"class":1145},"bytes",[1131,1829,1287],{"class":1231},[1131,1831,1833,1835,1837,1839,1842],{"class":1133,"line":1832},14,[1131,1834,1674],{"class":1137},[1131,1836,1797],{"class":1145},[1131,1838,1305],{"class":1141},[1131,1840,1841],{"class":1219},"close",[1131,1843,1485],{"class":1231},[1131,1845,1847],{"class":1133,"line":1846},15,[1131,1848,1696],{"class":1141},[1131,1850,1852],{"class":1133,"line":1851},16,[1131,1853,1200],{"emptyLinePlaceholder":1199},[1131,1855,1857,1859,1862,1864,1866,1868,1870,1872,1874,1876],{"class":1133,"line":1856},17,[1131,1858,1207],{"class":1206},[1131,1860,1861],{"class":1145}," handle ",[1131,1863,1213],{"class":1141},[1131,1865,1216],{"class":1137},[1131,1867,1579],{"class":1219},[1131,1869,1222],{"class":1145},[1131,1871,1259],{"class":1141},[1131,1873,1683],{"class":1169},[1131,1875,1259],{"class":1141},[1131,1877,1287],{"class":1145},[1131,1879,1881,1884,1887],{"class":1133,"line":1880},18,[1131,1882,1883],{"class":1137},"if",[1131,1885,1886],{"class":1145}," (handle) ",[1131,1888,1225],{"class":1141},[1131,1890,1892,1894,1896,1898,1900,1902,1904,1906,1908,1910,1912,1914,1916,1918,1920,1922,1925],{"class":1133,"line":1891},19,[1131,1893,1674],{"class":1137},[1131,1895,1715],{"class":1219},[1131,1897,1222],{"class":1231},[1131,1899,1721],{"class":1145},[1131,1901,1149],{"class":1141},[1131,1903,1463],{"class":1219},[1131,1905,1222],{"class":1231},[1131,1907,1259],{"class":1141},[1131,1909,1315],{"class":1169},[1131,1911,1259],{"class":1141},[1131,1913,1643],{"class":1231},[1131,1915,1149],{"class":1141},[1131,1917,1216],{"class":1137},[1131,1919,1152],{"class":1219},[1131,1921,1222],{"class":1231},[1131,1923,1924],{"class":1145},"vault",[1131,1926,1408],{"class":1231},[1131,1928,1930,1932,1935],{"class":1133,"line":1929},20,[1131,1931,1284],{"class":1141},[1131,1933,1934],{"class":1137}," else",[1131,1936,1614],{"class":1141},[1131,1938,1940],{"class":1133,"line":1939},21,[1131,1941,1942],{"class":1598},"  \u002F\u002F No grant yet, or a browser without the API — fall back to tier 1.\n",[1131,1944,1946],{"class":1133,"line":1945},22,[1131,1947,1696],{"class":1141},[941,1949,1950,1951,1954,1955,1958,1959,1962,1963,1969,1970,1973],{},"The handle survives reload because ",[956,1952,1953],{},"rememberDirectory"," puts it in IndexedDB;\n",[956,1956,1957],{},"recallDirectory"," returns ",[956,1960,1961],{},"null"," when there is nothing stored, which is also what you get\nin a browser that never had the API. ",[944,1964,1965,1966,1968],{},"That ",[956,1967,1961],{}," is the whole degradation story"," — a\nmissing capability reads as \"no folder granted\", the app falls back to the download, and\nnothing throws. ",[956,1971,1972],{},"forgetDirectory"," drops the grant.",[941,1975,1976,1977,1980,1981,1984,1985,1988,1989,1992,1993,1995,1996,1999,2000,2005],{},"⚠️ ",[944,1978,1979],{},"A recalled handle is usable but not necessarily permitted."," Remembering it saves the\nuser re-picking the folder; it does not carry the permission across reloads. Check\n",[956,1982,1983],{},"store.access()"," and be ready to call ",[956,1986,1987],{},"requestAccess()"," from a fresh click — ",[956,1990,1991],{},"'prompt'"," is\na normal state on a new page load, not an error. And ",[956,1994,1987],{}," is the only call\nthat prompts, so ",[944,1997,1998],{},"spend the gesture before any slow work",": a vault unlock's PBKDF2\noutlasts Chrome's ~5-second activation window, and asking afterwards means the prompt\nnever appears. The ",[953,2001,2002,2004],{"href":355},[956,2003,1101],{}," page"," has the four access\nstates and the ordering in full.",[941,2007,2008],{},"Availability is narrow — the File System Access API is a Chromium-desktop feature, and\nnot a gap waiting to be filled: Safari's OPFS is origin-private and cannot see a mounted\nvolume at all. Treat tier 2 as progressive enhancement and never as the only path, or\nSafari and Firefox users have no backup.",[1025,2010,2012],{"id":2011},"backing-up-when-data-changes-not-when-a-clock-fires","Backing up when data changes, not when a clock fires",[941,2014,2015],{},"A wall-clock timer backs up an idle vault and misses a burst. Bind the change event\ninstead:",[1122,2017,2019],{"className":1124,"code":2018,"language":1126,"meta":1127,"style":1127},"let dirty = false\n\ndb.on('change', (event) => {\n  \u002F\u002F Another tab already wrote this. Let the tab that made the change own the backup.\n  if (event.remote) return\n  dirty = true\n})\n\nsetInterval(async () => {\n  if (!dirty) return\n  dirty = false\n  const handle = await recallDirectory('backups')\n  if (handle) await backupTo(handle, podFilename('notes'), await writePod(vault))\n}, 60_000)\n",[956,2020,2021,2034,2038,2071,2076,2095,2105,2111,2115,2130,2146,2154,2176,2221],{"__ignoreMap":1127},[1131,2022,2023,2026,2029,2031],{"class":1133,"line":1134},[1131,2024,2025],{"class":1206},"let",[1131,2027,2028],{"class":1145}," dirty ",[1131,2030,1213],{"class":1141},[1131,2032,2033],{"class":1784}," false\n",[1131,2035,2036],{"class":1133,"line":1176},[1131,2037,1200],{"emptyLinePlaceholder":1199},[1131,2039,2040,2043,2045,2048,2050,2052,2055,2057,2059,2061,2064,2066,2069],{"class":1133,"line":1196},[1131,2041,2042],{"class":1145},"db",[1131,2044,1305],{"class":1141},[1131,2046,2047],{"class":1219},"on",[1131,2049,1222],{"class":1145},[1131,2051,1259],{"class":1141},[1131,2053,2054],{"class":1169},"change",[1131,2056,1259],{"class":1141},[1131,2058,1149],{"class":1141},[1131,2060,1630],{"class":1141},[1131,2062,2063],{"class":1720},"event",[1131,2065,1643],{"class":1141},[1131,2067,2068],{"class":1206}," =>",[1131,2070,1614],{"class":1141},[1131,2072,2073],{"class":1133,"line":1203},[1131,2074,2075],{"class":1598},"  \u002F\u002F Another tab already wrote this. Let the tab that made the change own the backup.\n",[1131,2077,2078,2081,2083,2085,2087,2089,2092],{"class":1133,"line":1228},[1131,2079,2080],{"class":1137},"  if",[1131,2082,1630],{"class":1231},[1131,2084,2063],{"class":1145},[1131,2086,1305],{"class":1141},[1131,2088,997],{"class":1145},[1131,2090,2091],{"class":1231},") ",[1131,2093,2094],{"class":1137},"return\n",[1131,2096,2097,2100,2102],{"class":1133,"line":1246},[1131,2098,2099],{"class":1145},"  dirty",[1131,2101,1625],{"class":1141},[1131,2103,2104],{"class":1784}," true\n",[1131,2106,2107,2109],{"class":1133,"line":1264},[1131,2108,1284],{"class":1141},[1131,2110,1287],{"class":1145},[1131,2112,2113],{"class":1133,"line":1281},[1131,2114,1200],{"emptyLinePlaceholder":1199},[1131,2116,2117,2119,2121,2123,2126,2128],{"class":1133,"line":1290},[1131,2118,1536],{"class":1219},[1131,2120,1222],{"class":1145},[1131,2122,1506],{"class":1206},[1131,2124,2125],{"class":1141}," ()",[1131,2127,2068],{"class":1206},[1131,2129,1614],{"class":1141},[1131,2131,2132,2134,2136,2139,2142,2144],{"class":1133,"line":1708},[1131,2133,2080],{"class":1137},[1131,2135,1630],{"class":1231},[1131,2137,2138],{"class":1141},"!",[1131,2140,2141],{"class":1145},"dirty",[1131,2143,2091],{"class":1231},[1131,2145,2094],{"class":1137},[1131,2147,2148,2150,2152],{"class":1133,"line":1752},[1131,2149,2099],{"class":1145},[1131,2151,1625],{"class":1141},[1131,2153,2033],{"class":1784},[1131,2155,2156,2158,2160,2162,2164,2166,2168,2170,2172,2174],{"class":1133,"line":1792},[1131,2157,1619],{"class":1206},[1131,2159,1622],{"class":1145},[1131,2161,1625],{"class":1141},[1131,2163,1216],{"class":1137},[1131,2165,1579],{"class":1219},[1131,2167,1222],{"class":1231},[1131,2169,1259],{"class":1141},[1131,2171,1683],{"class":1169},[1131,2173,1259],{"class":1141},[1131,2175,1287],{"class":1231},[1131,2177,2178,2180,2182,2184,2186,2189,2191,2193,2195,2197,2199,2201,2203,2205,2207,2209,2211,2213,2215,2217,2219],{"class":1133,"line":1813},[1131,2179,2080],{"class":1137},[1131,2181,1630],{"class":1231},[1131,2183,1721],{"class":1145},[1131,2185,2091],{"class":1231},[1131,2187,2188],{"class":1137},"await",[1131,2190,1715],{"class":1219},[1131,2192,1222],{"class":1231},[1131,2194,1721],{"class":1145},[1131,2196,1149],{"class":1141},[1131,2198,1463],{"class":1219},[1131,2200,1222],{"class":1231},[1131,2202,1259],{"class":1141},[1131,2204,1315],{"class":1169},[1131,2206,1259],{"class":1141},[1131,2208,1643],{"class":1231},[1131,2210,1149],{"class":1141},[1131,2212,1216],{"class":1137},[1131,2214,1152],{"class":1219},[1131,2216,1222],{"class":1231},[1131,2218,1924],{"class":1145},[1131,2220,1408],{"class":1231},[1131,2222,2223,2226,2230],{"class":1133,"line":1832},[1131,2224,2225],{"class":1141},"},",[1131,2227,2229],{"class":2228},"sbssI"," 60_000",[1131,2231,1287],{"class":1145},[941,2233,2234],{},"Two details decide whether this works, and both are easy to get wrong:",[941,2236,2237,2238,2247,2248,2251,2252,2255,2256,2259,2260,2262,2263,2262,2266,1325,2269,2272],{},"⛔ ",[944,2239,2240,2241,2243,2244,1305],{},"Bind ",[956,2242,1116],{},", not ",[956,2245,2246],{},"collection.subscribe(…)"," ",[956,2249,2250],{},"subscribe"," is a\nper-collection wrapper that ",[944,2253,2254],{},"hydrates the record on every event"," — on a lazy collection\nthat is a decrypt per change, paid to learn a fact you could have had for nothing. It also\nonly covers collections you had already subscribed to, so a collection created later is\nsilently unbacked. ",[956,2257,2258],{},"ChangeEvent"," carries ",[956,2261,1924],{},", ",[956,2264,2265],{},"collection",[956,2267,2268],{},"id",[956,2270,2271],{},"action"," —\neverything a \"something changed, back up\" trigger needs, with no record read.",[941,2274,2237,2275,2281,2282,2285,2286,2289,2290,2293],{},[944,2276,2277,2278,1305],{},"Honour ",[956,2279,2280],{},"event.remote"," It is ",[956,2283,2284],{},"true"," when the change arrived by applying another\ntab's signal rather than from a write here. Ignore it and every open tab writes its own\npod for the same logical change: ",[944,2287,2288],{},"N tabs, N identical backups",", each a full vault write.\nThe debounce above does not save you — each tab debounces its own copy. Hub itself reads\nthis flag for echo suppression in ",[956,2291,2292],{},"ChangeBroadcast",", so you are following an established\nrule, not inventing one.",[1025,2295,2297],{"id":2296},"filenames-and-retention","Filenames and retention",[1122,2299,2301],{"className":1124,"code":2300,"language":1126,"meta":1127,"style":1127},"const podFilename = (vault: string) =>\n  `${vault}-${new Date().toISOString().replace(\u002F[-:]\u002Fg, '').replace(\u002F\\.\\d+Z$\u002F, 'Z')}.noydb`\n\u002F\u002F → notes-20260917T081500Z.noydb\n",[956,2302,2303,2325,2423],{"__ignoreMap":1127},[1131,2304,2305,2307,2310,2312,2314,2316,2318,2320,2322],{"class":1133,"line":1134},[1131,2306,1207],{"class":1206},[1131,2308,2309],{"class":1145}," podFilename ",[1131,2311,1213],{"class":1141},[1131,2313,1630],{"class":1141},[1131,2315,1924],{"class":1720},[1131,2317,1235],{"class":1141},[1131,2319,1735],{"class":1639},[1131,2321,1643],{"class":1141},[1131,2323,2324],{"class":1206}," =>\n",[1131,2326,2327,2330,2332,2334,2337,2340,2342,2345,2347,2349,2352,2354,2356,2359,2361,2364,2367,2370,2373,2375,2378,2380,2382,2384,2386,2389,2392,2395,2398,2401,2404,2406,2408,2410,2412,2414,2416,2418,2420],{"class":1133,"line":1176},[1131,2328,2329],{"class":1141},"  `${",[1131,2331,1924],{"class":1145},[1131,2333,1284],{"class":1141},[1131,2335,2336],{"class":1169},"-",[1131,2338,2339],{"class":1141},"${",[1131,2341,1381],{"class":1141},[1131,2343,2344],{"class":1219}," Date",[1131,2346,1240],{"class":1145},[1131,2348,1305],{"class":1141},[1131,2350,2351],{"class":1219},"toISOString",[1131,2353,1240],{"class":1145},[1131,2355,1305],{"class":1141},[1131,2357,2358],{"class":1219},"replace",[1131,2360,1222],{"class":1145},[1131,2362,2363],{"class":1141},"\u002F[",[1131,2365,2366],{"class":1169},"-:",[1131,2368,2369],{"class":1141},"]\u002F",[1131,2371,2372],{"class":2228},"g",[1131,2374,1149],{"class":1141},[1131,2376,2377],{"class":1141}," ''",[1131,2379,1643],{"class":1145},[1131,2381,1305],{"class":1141},[1131,2383,2358],{"class":1219},[1131,2385,1222],{"class":1145},[1131,2387,2388],{"class":1141},"\u002F",[1131,2390,2391],{"class":1145},"\\.",[1131,2393,2394],{"class":1169},"\\d",[1131,2396,2397],{"class":1141},"+",[1131,2399,2400],{"class":1169},"Z",[1131,2402,2403],{"class":1137},"$",[1131,2405,2388],{"class":1141},[1131,2407,1149],{"class":1141},[1131,2409,1166],{"class":1141},[1131,2411,2400],{"class":1169},[1131,2413,1259],{"class":1141},[1131,2415,1643],{"class":1145},[1131,2417,1284],{"class":1141},[1131,2419,1013],{"class":1169},[1131,2421,2422],{"class":1141},"`\n",[1131,2424,2425],{"class":1133,"line":1196},[1131,2426,2427],{"class":1598},"\u002F\u002F → notes-20260917T081500Z.noydb\n",[941,2429,2430,2431,2434],{},"Compact UTC ISO-8601 makes ",[944,2432,2433],{},"lexical sort equal chronological sort",", so retention is a\nsort and a slice rather than date parsing:",[1122,2436,2438],{"className":1124,"code":2437,"language":1126,"meta":1127,"style":1127},"const keepLastN = (names: string[], n: number) => names.sort().slice(-n)\n",[956,2439,2440],{"__ignoreMap":1127},[1131,2441,2442,2444,2447,2449,2451,2454,2456,2458,2461,2463,2466,2468,2471,2473,2475,2478,2480,2483,2485,2487,2490,2492,2494],{"class":1133,"line":1134},[1131,2443,1207],{"class":1206},[1131,2445,2446],{"class":1145}," keepLastN ",[1131,2448,1213],{"class":1141},[1131,2450,1630],{"class":1141},[1131,2452,2453],{"class":1720},"names",[1131,2455,1235],{"class":1141},[1131,2457,1735],{"class":1639},[1131,2459,2460],{"class":1145},"[]",[1131,2462,1149],{"class":1141},[1131,2464,2465],{"class":1720}," n",[1131,2467,1235],{"class":1141},[1131,2469,2470],{"class":1639}," number",[1131,2472,1643],{"class":1141},[1131,2474,2068],{"class":1206},[1131,2476,2477],{"class":1145}," names",[1131,2479,1305],{"class":1141},[1131,2481,2482],{"class":1219},"sort",[1131,2484,1240],{"class":1145},[1131,2486,1305],{"class":1141},[1131,2488,2489],{"class":1219},"slice",[1131,2491,1222],{"class":1145},[1131,2493,2336],{"class":1141},[1131,2495,2496],{"class":1145},"n)\n",[941,2498,2499],{},"Keep-last-N, not grandfather-father-son. A browser backup competes with the user's disk\nand their patience, and a rotation scheme nobody can explain gets turned off.",[1025,2501,2503],{"id":2502},"why-full-pods-not-incremental","Why full pods, not incremental",[941,2505,2506,2509,2510,2513,2514,2517],{},[956,2507,2508],{},"WritePodOptions"," has a ",[956,2511,2512],{},"since"," option, and a nightly delta is tempting. Resist it for\nthis use case: ",[944,2515,2516],{},"incremental backups turn restore into a chain replay."," A full pod\nrestores by itself, from one file, with no ordering to reconstruct and no missing link to\ndiscover at the worst possible moment. The vault that fits in a browser is the vault\nwhere a full pod is cheap — the trade only starts to favour deltas at a size IndexedDB\nwas not going to hold anyway.",[1025,2519,2521],{"id":2520},"verify","Verify",[941,2523,2524],{},"Prove the round trip, in a fresh context, before you trust any of it:",[1122,2526,2528],{"className":1124,"code":2527,"language":1126,"meta":1127,"style":1127},"const bytes = await writePod(vault)\n\u002F\u002F … clear site data, or open a different profile …\n\nconst restored = await readPod(bytes)\n",[956,2529,2530,2544,2549,2553],{"__ignoreMap":1127},[1131,2531,2532,2534,2536,2538,2540,2542],{"class":1133,"line":1134},[1131,2533,1207],{"class":1206},[1131,2535,1350],{"class":1145},[1131,2537,1213],{"class":1141},[1131,2539,1216],{"class":1137},[1131,2541,1152],{"class":1219},[1131,2543,1359],{"class":1145},[1131,2545,2546],{"class":1133,"line":1176},[1131,2547,2548],{"class":1598},"\u002F\u002F … clear site data, or open a different profile …\n",[1131,2550,2551],{"class":1133,"line":1196},[1131,2552,1200],{"emptyLinePlaceholder":1199},[1131,2554,2555,2557,2560,2562,2564,2566],{"class":1133,"line":1203},[1131,2556,1207],{"class":1206},[1131,2558,2559],{"class":1145}," restored ",[1131,2561,1213],{"class":1141},[1131,2563,1216],{"class":1137},[1131,2565,1157],{"class":1219},[1131,2567,2568],{"class":1145},"(bytes)\n",[941,2570,2571,2573,2574,2577,2578,2581,2582,2585],{},[956,2572,1328],{}," returns a ",[956,2575,2576],{},"PodReadResult",", not a vault — read its contents to confirm the\nrecords are there. ⭐ ",[944,2579,2580],{},"Do this once against a genuinely cleared profile."," A backup\nverified only by re-reading it in the tab that wrote it has tested your ",[956,2583,2584],{},"Uint8Array",", not\nyour durability story.",[1025,2587,2589],{"id":2588},"see-also","See also",[2591,2592,2593,2602,2609,2620],"ul",{},[2594,2595,2596,2601],"li",{},[953,2597,2598],{"href":359},[956,2599,2600],{},"to-browser-idb"," — the live store, and its atomicity guarantee",[2594,2603,2604,2608],{},[953,2605,2606],{"href":355},[956,2607,1101],{}," — the backup target's full API, its four access states, and the activation-window trap",[2594,2610,2611,2613,2614,2616,2617,2619],{},[953,2612,629],{"href":630}," — the ",[956,2615,1013],{}," container format, header disclosure, and ",[956,2618,1328],{}," options",[2594,2621,2622,2624,2625,2628],{},[953,2623,727],{"href":728}," — ",[956,2626,2627],{},"db.on('change')","'s neighbour, for reacting in the UI rather than backing up",[2630,2631,2632],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}",{"title":1127,"searchDepth":1196,"depth":1196,"links":2634},[2635,2636,2637,2638,2639,2640,2641,2642,2643,2644],{"id":1027,"depth":1176,"text":1028},{"id":1034,"depth":1176,"text":1035},{"id":1119,"depth":1176,"text":1120},{"id":1337,"depth":1176,"text":1338},{"id":1544,"depth":1176,"text":1545},{"id":2011,"depth":1176,"text":2012},{"id":2296,"depth":1176,"text":2297},{"id":2502,"depth":1176,"text":2503},{"id":2520,"depth":1176,"text":2521},{"id":2588,"depth":1176,"text":2589},null,"A pure SPA that survives a cleared cache: to-browser-idb for the live vault, a .noydb pod for the backup, and two tiers of getting that pod to disk.","md",{},{"title":523,"description":2646},"stable","important","OE2zfUT5qUbkrLP6ZY2G_Zte9uB-81KtDxF6ABfVZf8",1791896575439]