Preserve CLI file creation times across in-place edits

package-lock.json

@@ -23,7 +23,7 @@
                 "@smithy/types": "^4.14.3",
                 "@smithy/util-retry": "^4.4.5",
                 "@vrtmrz/browser-ui-kit": "0.1.0",
-                "@vrtmrz/livesync-commonlib": "0.1.39",
+                "@vrtmrz/livesync-commonlib": "0.1.40",
                 "@vrtmrz/obsidian-plugin-kit": "0.1.4",
                 "@vrtmrz/ui-interactions": "0.1.2",
                 "diff-match-patch": "^1.0.5",
@@ -4389,9 +4389,9 @@
             }
         },
         "node_modules/@vrtmrz/livesync-commonlib": {
-            "version": "0.1.39",
-            "resolved": "https://registry.npmjs.org/@vrtmrz/livesync-commonlib/-/livesync-commonlib-0.1.39.tgz",
-            "integrity": "sha512-AUjQI1fgR+4KOYpuwZfFjVJeSt9JDNSLMAlLoLuh/553CzMnqTfwqopVItKP3b3SrdVQbyGbJLQeGEhuDMoJ9Q==",
+            "version": "0.1.40",
+            "resolved": "https://registry.npmjs.org/@vrtmrz/livesync-commonlib/-/livesync-commonlib-0.1.40.tgz",
+            "integrity": "sha512-GVskcVFoQIpb45rR+QT9Wjtdqc6oAxYz5IB2WeJwusWZ8lTmqVrba+6YD9FTtsbzqbPOyJ/LdQxnET7SUexVtw==",
             "license": "MIT",
             "dependencies": {
                 "@aws-sdk/client-s3": "^3.808.0",

package.json

@@ -191,7 +191,7 @@
         "@smithy/types": "^4.14.3",
         "@smithy/util-retry": "^4.4.5",
         "@vrtmrz/browser-ui-kit": "0.1.0",
-        "@vrtmrz/livesync-commonlib": "0.1.39",
+        "@vrtmrz/livesync-commonlib": "0.1.40",
         "@vrtmrz/obsidian-plugin-kit": "0.1.4",
         "@vrtmrz/ui-interactions": "0.1.2",
         "diff-match-patch": "^1.0.5",

src/apps/cli/commands/runCommand.ts

@@ -16,7 +16,7 @@ import type { CLICommandContext, CLIOptions } from "./types";
 import { toArrayBuffer, toDatabaseRelativePath } from "./utils";
 import { collectPeers, openP2PHost, parseTimeoutSeconds, syncWithPeer } from "./p2p";
 import { compatGlobal } from "@vrtmrz/livesync-commonlib/compat/common/coreEnvFunctions";
-import { fsPromises as fs, path } from "@vrtmrz/livesync-commonlib/node";
+import { fsPromises as fs, getNodeFileCreationTime, path } from "@vrtmrz/livesync-commonlib/node";
 import { writeStderrLine, writeStdoutLine } from "@/apps/cli/cliOutput";
 import {
     CENTRAL_COMPATIBILITY_REJECTION_REASONS,
@@ -232,7 +232,7 @@ export async function runCommand(options: CLIOptions, context: CLICommandContext
 
         await core.serviceModules.storageAccess.writeFileAuto(destinationDatabasePath, toArrayBuffer(sourceData), {
             mtime: Math.floor(sourceStat.mtimeMs),
-            ctime: Math.floor(sourceStat.ctimeMs),
+            ctime: getNodeFileCreationTime(sourceStat),
         });
         const destinationPathWithPrefix = destinationDatabasePath as FilePathWithPrefix;
         const stored = await core.serviceModules.fileHandler.storeFileToDB(destinationPathWithPrefix, true);

src/apps/cli/commands/runCommand.unit.spec.ts

@@ -23,6 +23,8 @@ import {
     replicationFailed,
 } from "@vrtmrz/livesync-commonlib/replication";
 
+vi.mock("node:fs/promises", { spy: true });
+
 function createStandardIoMock() {
     return {
         readStdin: vi.fn(async () => ""),
@@ -363,6 +365,38 @@ describe("runCommand abnormal cases", () => {
         expect(core.serviceModules.databaseFileAccess.fetch).toHaveBeenCalledWith("file.md", "9-invalid", true);
     });
 
+    it.each([
+        { birthtimeMs: 1000.9, expectedCtime: 1000 },
+        { birthtimeMs: 0, expectedCtime: 2000 },
+    ])(
+        "push selects the source creation time with a change-time fallback (%j)",
+        async ({ birthtimeMs, expectedCtime }) => {
+            const core = createCoreMock();
+            const directory = await fs.mkdtemp(path.join(os.tmpdir(), "livesync-push-time-"));
+            const source = path.join(directory, "source.md");
+            await fs.writeFile(source, "content");
+            const sourceStat = await fs.stat(source);
+            const stat = vi
+                .spyOn(fs, "stat")
+                .mockResolvedValue({ ...sourceStat, birthtimeMs, ctimeMs: 2000.8, mtimeMs: 3000.7 });
+            try {
+                const context = { core, vaultPath: "/tmp/vault", databasePath: "/tmp/vault" } as any;
+                expect(await runCommand(makeOptions("push", [source, "note.md"]), context)).toBe(true);
+                expect(core.serviceModules.storageAccess.writeFileAuto).toHaveBeenCalledWith(
+                    "note.md",
+                    expect.any(ArrayBuffer),
+                    {
+                        ctime: expectedCtime,
+                        mtime: 3000,
+                    }
+                );
+            } finally {
+                stat.mockRestore();
+                await fs.rm(directory, { recursive: true, force: true });
+            }
+        }
+    );
+
     it("push rejects when source file does not exist", async () => {
         const core = createCoreMock();
 

src/apps/cli/main.bootstrap.unit.spec.ts

@@ -1,5 +1,5 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
-import { mkdtemp, mkdir, readFile, rm, writeFile } from "node:fs/promises";
+import { appendFile, mkdtemp, mkdir, readFile, rm, stat, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import * as chokidar from "chokidar";
@@ -204,6 +204,45 @@ describe("CLI database preparation", () => {
         }
     );
 
+    it("retains filesystem creation time in database Metadata after an in-place edit", async (context) => {
+        const note = join(vaultPath, "notes/local.md");
+        const initial = await stat(note);
+        await new Promise((resolve) => setTimeout(resolve, 20));
+        await appendFile(note, "\nedit");
+        const edited = await stat(note);
+        if (
+            initial.birthtimeMs <= 0 ||
+            edited.birthtimeMs !== initial.birthtimeMs ||
+            Math.floor(edited.ctimeMs) <= Math.floor(initial.birthtimeMs)
+        ) {
+            context.skip();
+        }
+
+        const observed: { before?: number; after?: number; content?: string; stored?: boolean } = {};
+        const runner = vi.fn<CliCommandRunner>(async (_options, { core }) => {
+            const filePath = "notes/local.md" as FilePathWithPrefix;
+            const before = await core.serviceModules.databaseFileAccess.fetch(filePath);
+            if (before) observed.before = before.stat.ctime;
+            await appendFile(note, "\nsecond edit");
+            observed.stored = await core.serviceModules.fileHandler.storeFileToDB(filePath, true);
+            const after = await core.serviceModules.databaseFileAccess.fetch(filePath);
+            if (after) {
+                observed.after = after.stat.ctime;
+                observed.content = await after.body.text();
+            }
+            return false;
+        });
+
+        await start("daemon", runner);
+        expect(runner).toHaveBeenCalledOnce();
+        expect(observed).toEqual({
+            before: Math.floor(initial.birthtimeMs),
+            after: Math.floor(initial.birthtimeMs),
+            content: "local content\nedit\nsecond edit",
+            stored: true,
+        });
+    });
+
     it("runs the mirror scan once and exits without starting file watching", async () => {
         const enumerate = vi.spyOn(ServiceFileAccessCLI.prototype, "getFiles");
         const watch = vi.mocked(chokidar.watch);

src/apps/cli/managers/CLIStorageEventManagerAdapter.ts

@@ -13,7 +13,7 @@ import type { FileEventItemSentinel } from "@vrtmrz/livesync-commonlib/compat/ma
 import type { NodeFile, NodeFolder } from "@/apps/cli/adapters/NodeTypes";
 import { watch as chokidarWatch, type FSWatcher } from "chokidar";
 import type { IgnoreRules } from "@/apps/cli/serviceModules/IgnoreRules";
-import { fsPromises as fs, path, type Stats } from "@vrtmrz/livesync-commonlib/node";
+import { fsPromises as fs, getNodeFileCreationTime, path, type Stats } from "@vrtmrz/livesync-commonlib/node";
 import type { CliDiagnosticReporter } from "@/apps/cli/cliOutput";
 
 /**
@@ -123,7 +123,7 @@ class CLIWatchAdapter implements IStorageEventWatchAdapter {
             stat: {
                 // Floor to integer milliseconds; Linux fs.Stats.*Ms carry sub-millisecond
                 // precision, and timestamps are stored as integer ms everywhere else.
-                ctime: Math.floor(stats?.ctimeMs ?? Date.now()),
+                ctime: stats ? getNodeFileCreationTime(stats) : Date.now(),
                 mtime: Math.floor(stats?.mtimeMs ?? Date.now()),
                 size: stats?.size ?? 0,
                 type: "file",

src/apps/cli/managers/CLIStorageEventManagerAdapter.unit.spec.ts

@@ -105,6 +105,59 @@ describe("CLIStorageEventManagerAdapter", () => {
         expect(created.stat?.mtime).toBe(1778511180999);
     });
 
+    it("keeps creation time across add and change events when inode change time advances", async () => {
+        const adapter = new CLIStorageEventManagerAdapter("/vault", undefined, true);
+        const handlers = makeHandlers();
+        await adapter.watch.beginWatch(handlers);
+        const add = mockWatcher.on.mock.calls.find(([event]) => event === "add")![1];
+        const change = mockWatcher.on.mock.calls.find(([event]) => event === "change")![1];
+
+        add("/vault/note.md", { birthtimeMs: 1000.9, ctimeMs: 2000.8, mtimeMs: 2000.7, size: 7 });
+        change("/vault/note.md", { birthtimeMs: 1000.9, ctimeMs: 3000.8, mtimeMs: 3000.7, size: 8 });
+
+        expect(handlers.onCreate).toHaveBeenCalledWith(
+            expect.objectContaining({
+                stat: { ctime: 1000, mtime: 2000, size: 7, type: "file" },
+            })
+        );
+        expect(handlers.onChange).toHaveBeenCalledWith(
+            expect.objectContaining({
+                stat: { ctime: 1000, mtime: 3000, size: 8, type: "file" },
+            })
+        );
+    });
+
+    it("falls back to change time when the filesystem supplies zero birth time", async () => {
+        const adapter = new CLIStorageEventManagerAdapter("/vault", undefined, true);
+        const handlers = makeHandlers();
+        await adapter.watch.beginWatch(handlers);
+        const change = mockWatcher.on.mock.calls.find(([event]) => event === "change")![1];
+        change("/vault/note.md", { birthtimeMs: 0, ctimeMs: 2000.8, mtimeMs: 3000.7, size: 8 });
+        expect(handlers.onChange).toHaveBeenCalledWith(
+            expect.objectContaining({
+                stat: { ctime: 2000, mtime: 3000, size: 8, type: "file" },
+            })
+        );
+    });
+
+    it("uses the current time for a deletion without stats", async () => {
+        const now = vi.spyOn(Date, "now").mockReturnValue(4000);
+        try {
+            const adapter = new CLIStorageEventManagerAdapter("/vault", undefined, true);
+            const handlers = makeHandlers();
+            await adapter.watch.beginWatch(handlers);
+            const unlink = mockWatcher.on.mock.calls.find(([event]) => event === "unlink")![1];
+            unlink("/vault/note.md");
+            expect(handlers.onDelete).toHaveBeenCalledWith(
+                expect.objectContaining({
+                    stat: { ctime: 4000, mtime: 4000, size: 0, type: "file" },
+                })
+            );
+        } finally {
+            now.mockRestore();
+        }
+    });
+
     it("close() calls watcher.close()", async () => {
         const adapter = new CLIStorageEventManagerAdapter("/base", undefined, true);
         const handlers = makeHandlers();

test/e2e-obsidian/scripts/cli-to-obsidian-sync.ts

@@ -1,5 +1,5 @@
 import { spawn } from "node:child_process";
-import { access, mkdir, mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
+import { access, appendFile, mkdir, mkdtemp, readFile, rm, stat, utimes, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { dirname, join, resolve } from "node:path";
 import {
@@ -21,6 +21,7 @@ import {
 } from "../runner/liveSyncWorkflow.ts";
 import { startObsidianLiveSyncSession, type ObsidianLiveSyncSession } from "../runner/session.ts";
 import { createTemporaryVault } from "../runner/vault.ts";
+import { evalObsidianJson } from "../runner/cli.ts";
 
 process.env.E2E_OBSIDIAN_CLI_TIMEOUT_MS ??= "30000";
 process.env.E2E_OBSIDIAN_COUCHDB_TIMEOUT_MS ??= "30000";
@@ -37,6 +38,7 @@ const noteContent = [
     "",
 ].join("\n");
 const e2eePassphrase = "real-obsidian-cli-compatibility-e2e";
+const editedNoteContent = `${noteContent}\nCLI in-place edit.\n`;
 
 type LiveSyncCliCommand = {
     executable: string;
@@ -51,6 +53,7 @@ type CliResult = {
 type CliFileInfo = {
     id: string;
     children: string[];
+    expectedCtime?: number;
 };
 
 function parseCommandLine(value: string): string[] {
@@ -231,6 +234,24 @@ async function writeCliNote(
     if (!fileInfo.id || !Array.isArray(fileInfo.children) || fileInfo.children.length === 0) {
         throw new Error(`LiveSync CLI did not create complete metadata for ${notePath}: ${info.stdout}`);
     }
+    const storagePath = join(databasePath, notePath);
+    const originalStat = await stat(storagePath);
+    await new Promise((resolvePromise) => setTimeout(resolvePromise, 20));
+    await appendFile(storagePath, "\nCLI in-place edit.\n");
+    // The mirror scanner compares modification times at a two-second resolution.
+    await utimes(storagePath, new Date(), new Date(originalStat.mtimeMs + 5000));
+    const editedStat = await stat(storagePath);
+    if (
+        originalStat.birthtimeMs > 0 &&
+        originalStat.birthtimeMs === editedStat.birthtimeMs &&
+        Math.floor(editedStat.ctimeMs) > Math.floor(originalStat.birthtimeMs)
+    ) {
+        fileInfo.expectedCtime = Math.floor(originalStat.birthtimeMs);
+    }
+    await runLiveSyncCli(command, [databasePath, "--settings", settingsPath, "mirror"]);
+    const editedInfo = await runLiveSyncCli(command, [databasePath, "--settings", settingsPath, "info", notePath]);
+    const editedFileInfo = JSON.parse(editedInfo.stdout) as CliFileInfo;
+    fileInfo.children = editedFileInfo.children;
     await runLiveSyncCli(command, [databasePath, "--settings", settingsPath, "sync"]);
     return fileInfo;
 }
@@ -246,7 +267,7 @@ async function waitForVaultContent(
     while (Date.now() < deadline) {
         try {
             lastContent = await readFile(fullPath, "utf-8");
-            if (lastContent === noteContent) {
+            if (lastContent === editedNoteContent) {
                 return lastContent;
             }
         } catch (error) {
@@ -335,8 +356,31 @@ async function main(): Promise<void> {
         await pushLocalChanges(obsidianCli.binary, session.cliEnv);
 
         const received = await waitForVaultContent(vault.path, notePath);
-        assertEqual(received, noteContent, "The real Obsidian plug-in did not materialise the CLI-created note.");
-        console.log("CLI-created encrypted note was retrieved by the real Obsidian plug-in with identical content.");
+        assertEqual(received, editedNoteContent, "The real Obsidian plug-in did not materialise the CLI-edited note.");
+        if (cliFileInfo.expectedCtime !== undefined) {
+            const receivedCtime = await evalObsidianJson<number>(
+                obsidianCli.binary,
+                [
+                    "(async()=>{",
+                    "const core=app.plugins.plugins['obsidian-livesync'].core;",
+                    `const entry=await core.localDatabase.getDBEntry(${JSON.stringify(notePath)},undefined,false,true);`,
+                    "return JSON.stringify(entry.ctime);",
+                    "})()",
+                ].join(""),
+                session.cliEnv
+            );
+            assertEqual(
+                receivedCtime,
+                cliFileInfo.expectedCtime,
+                "The CLI edit changed creation time in synchronised Metadata."
+            );
+            console.log("The CLI edit retained the filesystem creation time in the real Obsidian client's Metadata.");
+        } else {
+            console.log("Creation-time verification skipped: native stats did not expose distinct creation and change times.");
+        }
+        console.log(
+            "CLI-edited encrypted note was retrieved by the real Obsidian plug-in with identical content."
+        );
     } finally {
         if (session) {
             await session.app.stop();

updates.md

@@ -16,6 +16,8 @@ Earlier releases remain available in the 1.0 release history, the 1.0 preview hi
 
 #### Fixed
 
+- We can edit files through the CLI without resetting their creation time where the filesystem supplies it. (#1243)
+    - Filesystems without birth-time support retain the existing change-time fallback. File replacement and restoration of a synchronised creation time remain subject to filesystem limitations.
 - `p2p-host` restores configured P2P automatic synchronisation, following, and change announcements after initialisation. (#1247)
     - Headless peer acceptance follows the configured policy. Single-operation commands retain their automatic synchronisation suspension.
 - We can select CLI-only Docker patches by their full release tag, such as `1.0.36-patch1-cli`, while keeping the Obsidian plug-in version.