feat: add governance, content standards, and creative approval tools to test agent

[bokelley]

Summary

• Adds 13 new MCP tools to the training agent (test-mcp) so three storyboard suites can execute end-to-end
• Property governance (6 tools): create/list/get/update/delete property lists + validate delivery compliance
• Content standards (6 tools): create/list/get/update standards + calibrate content + validate delivery
• Creative approval (1 tool): deterministic sandbox approval for brand rights storyboard
• Seeds acme_outdoor fictional advertiser brand so get_brand_identity resolves the storyboard's sample brand
• Adds per-session size limits on new state maps (consistent with existing media buy/creative limits)

Storyboard impact

Storyboard	Before	After
brand_rights	3 pass, 1 fail, 4 skip	All steps executable
property_governance	0 pass, 0 fail, 8 skip	All steps executable
content_standards	0 pass, 0 fail, 9 skip	All steps executable

Test plan

• TypeScript compiles without errors
• All 597 unit tests pass (including updated tool count assertion)
• Pre-commit hooks pass (unit tests + typecheck)
• CI passes
• Run storyboards against deployed test agent to verify end-to-end

Closes adcontextprotocol/adcp-client#508

🤖 Generated with Claude Code