feat(Git Sync): Persist insomnia git file hashes in workspace metadata

[gatzjames]

Overview

Currently we only store synced times in the metadata which leads to some files being re-imported while their contents are still the same.

This PR persists the hash to the workspace metadata alongside the sync time so that app restarts won't trigger re-imports if the file hashes are the same.

[Copilot]

Pull request overview

This PR aims to prevent unnecessary workspace re-imports after app restarts by persisting git-sync tracking state (file hash + last sync time) into workspace metadata.

Changes:

• Persist gitFileLastSyncHash and gitFileLastSyncTime to WorkspaceMeta during DB→FS flushes and FS→DB imports.
• Restore persisted mtime/hash into the watcher’s in-memory tracking maps during startup to allow skipping unchanged files.
• Extend WorkspaceMeta model defaults/types to include the new persisted hash field.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/insomnia/src/sync/git/repo-file-watcher.ts	Persists and restores per-workspace git file hash/mtime to reduce redundant imports across restarts.
packages/insomnia/src/insomnia-data/src/models/workspace-meta.ts	Adds gitFileLastSyncHash to the workspace meta model and initialization defaults.

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[Copilot]

gitFileLastSyncHash/gitFileLastSyncTime are persisted here, but gitFilePath is not. If meta.gitFilePath is null/undefined (which can happen for DB-created workspaces before any FS→DB import), loadKnownGitFilePaths() will ignore this meta record and the persisted hash/time won’t be restored on restart. Consider persisting gitFilePath (e.g. the computed default/rel path) when it’s missing, or adjusting the restore logic to fall back to the default filename when gitFilePath is null.

Suggested change

	// Persist tracking state so the maps can be restored after a restart
	const workspaceMeta = meta ?? (await services.workspaceMeta.getOrCreateByParentId(workspace._id));
	await services.workspaceMeta.update(workspaceMeta, {
	// Persist tracking state so the maps can be restored after a restart.
	// Store the resolved gitFilePath as well so workspaces that previously
	// had no explicit meta.gitFilePath can restore their last sync state.
	const workspaceMeta = meta ?? (await services.workspaceMeta.getOrCreateByParentId(workspace._id));
	await services.workspaceMeta.update(workspaceMeta, {
	gitFilePath,