Fix password gate - remove if main block for HuggingFace

Add password gate using ACCESS_PASSWORD env var

Move Why This Matters to first tab, add prototype notice with data source clarification

Add deeper vision, client bridging features, and provider opt-in integration

Remove specific company references

Add Make Your Own Tool tab + fix dependencies

Add explainer tab: Human-in-the-Loop comparison

Initial commit: Prompt Prism prototype with dynamic system prompt generation