Unit test for the cli and github action

[DerekAgility]

A base set of unit tests for the current state of the CLI

Interestingly, found a few typescript errors while it was building these test cases

Bugs found and fixed during test writing

File	Bug	Fix
src/lib/getters/filesystem/get-galleries.ts	readJsonFile returns null for malformed JSON; null.mediaGroupingID in the dedup filter threw TypeError	Added if (gallery) guard before galleries.push(gallery)
src/lib/incremental/timestamp-tracker.ts	path.join(process.cwd(), rootPath, ...) produced wrong path when rootPath was absolute, leaking files into the project root	Changed to path.resolve(rootPath, ...)
src/core/state.ts	resetState() reset operationType and dryRun but not autoPublish	Added state.autoPublish = '' to resetState()
src/lib/publishers/*.ts (4 files)	if (!targetGuid) guard on a string[] — empty array is truthy, so guard never fired; targetGuid[0] silently became undefined	Changed to if (!targetGuid?.length)
src/lib/ui/console/logging-modes.ts	validateLoggingState used !state.sourceGuid and !state.locale — empty arrays are truthy so validation never caught missing GUIDs/locales	Changed to !state.sourceGuid?.length and !state.locale?.length
src/core/publish.ts	PublishService constructor used !state.targetGuid — same empty-array truthy issue	Changed to !state.targetGuid?.length
src/lib/workflows/refresh-mappings.ts	path.join(process.cwd(), state.rootPath, ...) leaked log files into <project>/var/folders/... when rootPath was absolute	Changed to path.resolve(state.rootPath, ...)
src/core/pull.ts, src/core/push.ts, src/core/state.ts (×2)	Same path.join(process.cwd(), state.rootPath, ...) pattern in handleResetFlag and two state path helpers	Changed all four to path.resolve(state.rootPath, ...)