frostime

Pre-scan Markdown files before reading. Use `sspec tool mdtoc` to get file size + heading structure with line numbers (L<n> format) before reading long docs, SKILLs, or spec-docs. Eliminates blind reads.

Assess scale, create change, fill spec.md + design.md, align with user. Use after clarify when ready to define the solution.

Execute tasks from tasks.md. Implement code changes, update progress. Use after plan approval.

Break design into concrete tasks. Fill tasks.md with file-level execution plan. Use after design alignment.

User acceptance and feedback loop. Handle argue-improve cycles until user is satisfied.

Build shared understanding through dialogue and investigation. Produces Problem Statement + direction sketch. Reusable posture, not rigid phase.

Structured, efficient agent-user synchronization at decision points. Formalized exchange over prose.

Create and maintain spec-docs — knowledge that code alone cannot adequately convey.

Create reverse Rust puzzles with intentional, educational bugs.

Review reverse Rust puzzles for realism, focus, and teaching value.

Help record Rust learning progress, mistakes, debug attempts, and concept gaps.

Create high-quality Rust learning puzzles for experienced programmers.

Review Rust puzzles for quality, correctness, and learning value.

Add, use, or migrate a module to the external bundle system in sy-f-misc. Trigger when: user asks to reduce bundle size, move a module to external, use dynamic import for a large module, or asks about @external imports.

Develop plugin UI by writing single HTML pages loaded in iframes within sy-f-misc. Use this skill when the user asks to build UI using HSPA, "HTML Page", or needs an iframe-based interface for a plugin feature. Also trigger when the user mentions openIframeTab, openIframeDialog, or pluginSdk.

Manage SiYuan Note with the `siyuan` CLI. Use this whenever the user mentions SiYuan, notebooks, documents, blocks, or wants to query/update a SiYuan knowledge base.

Diagnose and preinstall the VS Code Stable Server on a Linux or Windows Remote-SSH host when automatic downloads fail behind a proxy.

Use this skill when the user wants an agent-created, visual, report-ready single-page document instead of plain Markdown. Produce a valid simple-mdx-canvas `.mdx` file using GFM Markdown, math, Bulma-based JSX/classes, and registered components; validate it; render it to HTML; return both paths. Do not use for ordinary Markdown-only notes or renderer implementation work.

Use this skill when the user explicitly considers an existing SKILL.md bloated, mechanical, list-heavy, workflow-driven, or over-prescriptive and wants it substantially simplified without losing real capability. Recover the skill's core contract, validate the supporting contracts required by its actual use case, and remove accidental process, redundant derivations, false closed sets, and author preference presented as necessity. This is a repair skill, not a general SKILL-writing standard or blanket terseness pass.

Use this skill when building iframe-based HTML UI pages for a SiYuan plugin with @frostime/siyuan-hspa, including Vite asset copying, openIframeTab/openIframeDialog integration, pluginSdk/customSdk contracts, hspa-mini.css, Alpine pages, examples, or troubleshooting HSPA page loading and SDK injection.

Build and maintain a single graph.yaml capturing the durable state of long-running, open-ended, multi-path work, then let the user render it with the exgraph CLI. Use for research, thesis, long-form fiction, world-building, product discovery, architecture migration, or any investigation with competing paths, hypotheses, and dead branches. Triggers when the user wants to track branches or dead ends, asks "which path am I on" or "what was I doing", or resumes work after days/weeks. Do not use for simple task lists, linear step-by-step execution, or one-shot conversations.