What problem does it solve? Creating effective YouTube titles and thumbnails requires balancing channel identity, hook differentiation, brand accuracy, and mobile legibility, and most creators lack a repeatable, evidence-backed workflow for doing it. ## Core Features & Use Cases - Differentiated Package Generation: Creates materially different verdict, proof, and utility title-thumbnail packages scored against a weighted rubric with simplicity and semantic-clarity gates. - Deterministic QA Guards: Validates channel profiles, enforces numeric safe margins and timestamp-safe zones on 1280x720 renders, and detects drift outside allowed edit regions during surgical revisions. - Performance Learning Loop: Stores sanitized YouTube Studio readbacks in a local JSONL ledger, generates pre-package briefs, runs postmortem diagnoses, and promotes lessons only after three comparable 72-hour evidence videos. - Use Case: A creator supplies a transcript and channel profile, receives three scored packages with rendered variants shown inline, gives feedback, and gets a tested production handoff ZIP with finals, previews, and edit notes. ## Quick Start Use $packaging-youtube-thumbnails with my channel profile and this transcript to create three materially different title-thumbnail packages, score them, render the passing variants, and show the comparison set inline.
