Ship Supergoal v1 run kernel and Pages site

[muhammadyusuf7008]

Summary

Ships Supergoal v1 as a small agent run kernel plus a rebuilt GitHub Pages product site.

This changes Supergoal from mostly markdown protocol into inspectable run infrastructure:

• adds skills/supergoal/scripts/sg.py with init-run, record-event, gate-phase, audit, resume, report, and validate-run
• adds canonical run.json, events.jsonl, evidence directories, mechanical phase gates, scope drift detection, trust debt reporting, audit/resume/report support, and legacy markdown fallback
• updates the skill protocol, templates, references, README, AGENTS, CLAUDE, changelog, plugin metadata, and line-ending config
• adds run-kernel tests and fixture runs for clean success, blocked, audit-fixed, and scope-drift cases
• rebuilds the GitHub Pages site into a polished presentation/product surface with Run Kernel, workflow, report gallery, protocol, install, transcript markers, and deployment workflow

Verification

• python -m py_compile skills\supergoal\scripts\sg.py
• bash skills/supergoal/scripts/validate-phase.sh skills/supergoal/templates/phase-goal.txt
• bash tests/sg-run-kernel.test.sh -> 22 passed, 0 failed
• bash tests/repo-state.test.sh -> 47 passed, 0 failed
• bash tests/claim-run.test.sh -> 23 passed, 0 failed
• node --check site\script.js
• claude plugin validate .claude-plugin/plugin.json
• claude plugin validate .claude-plugin/marketplace.json
• git diff --check
• Headless Chrome desktop and mobile render checks for site/index.html

Pages

The fork deployment is live at:

https://muhammadyusuf7008.github.io/supergoal/

Direct push to robzilla1738/supergoal was rejected because the authenticated account only has read permission, so this PR is opened from the fork.