docs(readme): refresh homepage to house brand structure

[bgorzelic]

What changed

Visual refresh of the README to match the house brand structure used across the other repos (spookyjuice.ai, gmail-cleanup, spookywrt, etc.). Content got shorter (346 lines removed, 207 added), not just more decorated.

• Bold value line + badge row under the H1: Python 3.11+ (from pyproject), FFmpeg, OpenCV, alpha status. No CI or license badges — no workflows and no LICENSE file exist to back them.
• Proof first: a terminal transcript of the core workflow (init → ingest run → analyze run) derived from the actual Rich console strings in commands/init.py, commands/ingest.py, and commands/analyze.py — including the real init tree output (03_PROJECT/, 04_EXPORTS/), which the old README misrepresented.
• "Why It's Different" capability table (VFR fix, HDR tonemap, scoring, timecode burn, FlightDeck fallback) and a mermaid pipeline diagram of the numbered project directories.
• The 11-step usage walkthrough was condensed into Quick Start + a "Beyond the Core Pipeline" section; all command tables, preset/device/format/scoring tables, FlightDeck config, and troubleshooting kept.
• Added an Honest Status section (alpha, v0.4.0, per pyproject classifiers).

Accuracy fixes

• init new transcript now matches what the command actually prints (old README showed a directory tree init does not create).
• Removed the pytest --cov=skyforge line from Development — the repo has no tests/ directory yet, so the command has nothing to run.

How to review

Render the README on the branch; every command and output string can be checked against src/skyforge/commands/ and pyproject.toml.