Why: the full-agent batch left three B10 sub-items open - the
composition root lacked MCP server injection and a Subagent factory,
builtin squad roles carried no explicit Tools/Skills/BashPermission
declarations, and the three Python deliverable recipes still lived
inline in the base.deliverables prompt instead of the skills system.
Evidence: go vet ./... clean; go test ./... 21 packages ok. New cases:
skills seeding idempotency with user-edit preservation and sorted
builtin names; the SubagentFactory bridge mapping delegation fields
into SpawnSubagent task briefs and status/errors back; builtin-role
assertions (all four explicit bash permissions, researcher
search+fetch, reviewer grep+glob, writer ask + 3 skills +
run_python/load_skill); MCP manager cache reuse/rebuild/disable
behavior including invalid JSON and config races.
Impact: internal/skills embeds docx/xlsx/pptx-author SKILL.md and
seeds <data>/skills at startup; base.deliverables references the
skills and keeps only import one-liners; squadadapter.AgentNativeOptions
now receives rc and gains SubagentFactory(rc); app.go adds
tools.mcp.servers loading with a config-keyed manager cache (old
manager closed on rebuild).
Refs: Dev task feature/full-agent-b10-r2 (verifier follow-ups).
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