v0.13.0 — hierarchical skill structure (progressive disclosure)

The tool set is now a Claude-Skill-shaped hierarchy: ultra-compact tool descriptions up front (frontmatter, ≤320 chars test-enforced), the GENERATE | EDIT | INSPECT family map behind doc_guide() (body), and deep per-task guides behind doc_guide(topic) (resources): build, generate, edit, edit.text, edit.chart, edit.xml, render, recipes.slides, recipes.colors. Topics form a dotted tree; parents join children; unknown topics fall back to the map.

Every backend: ANTHROPIC_TOOLS, new OPENAI_TOOLS, tool_specs(fmt), MCP server (descriptions from one source of truth), and doc_guide(names={...}) renders the guides with a host's renamed tools (e.g. geny-executor's DocAnalyze).