mirror: use FS.createPath (mkdirp) and verify parents; surface ENOENT cleanly

[LennartvdM]

Summary

• ensure mirror writes create parent directories via FS.createPath and verify them before writing
• add parent diagnostics to mirror failures so missing folders surface as ParentDirMissing with errno/code details
• initialize common /repo subdirectories on startup using the same recursive path helper

Testing

• not run (not requested)

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Codex Task

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[chatgpt-codex-connector]

💡 Codex Review

Wyrd-Engine/web/workers/pyRunner.js

Lines 491 to 496 in 8ca251c

	const exists = analysis?.exists === true;
	const isFolder = analysis?.object?.isFolder === true;
	const normalizedAnalysis =
	analysis && typeof analysis === 'object' ? { ...analysis, exists: !!analysis.exists, isFolder } : null;
	if (!exists || !isFolder) {
	const parentError = {

Fix parent directory validation

The new ensureParentDirectory gate checks analysis?.object?.isFolder === true to verify that the parent node is a directory. FS.analyzePath returns an FS node whose type is indicated by mode; it does not populate an isFolder boolean. As written, isFolder will always be false even when the path exists as a directory, so every call throws ParentDirMissing and mirror writes will fail immediately. Use instance.FS.isDir(analysis.object.mode) (or similar) to detect directories instead.

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