Tiered agent skill stack with extended S-tier packs and Context7 MCP

[praxstack]

Summary

Extends the merged gstack runtime work (PR #5) with a tiered skill install system and selective S-tier additions from the 2026 super-pro stack research.

Changes

• BERD_SKILLS_TIER env var: core (default), extended, or all
• EXTENDED tier adds project-local: Hallmark, deep-research, last30days
• Pin npx skills CLI to 1.5.23 in skills-lock.json
• Context7 MCP in .cursor/mcp.json
• Docs: tier table, conflict warnings (one methodology per task), optional tools (OpenSpec, Graphify, Impeccable, NVIDIA, Remotion)

Verify

BERD_SKILLS_TIER=extended ./scripts/install-agent-skills.sh
ls .agents/skills/ | wc -l   # ~744 with extended
just check

Optional tools (documented, not auto-installed)

Tool	Notes
OpenSpec	openspec init when ready
Graphify	needs uv tool install graphifyy
Impeccable	npx impeccable skills install + /impeccable init

  

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[cursor]

Superseded by the PraxStack integration PR, which includes this tiered-install commit plus install-praxstack-skills.sh, personas, workflows, and goals docs. Close this PR once #7 merges.