Add AI documentation skills

.ai/skills/local-domain-template/SKILL.md

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+---
+name: local-domain-template
+description: Use this skill for project-local domain knowledge that should not be installed system-wide. Replace this description with what the domain is, when the skill should trigger, and what kinds of tasks it should guide.
+---
+
+# Local Domain Skill
+
+Replace this template with the domain knowledge you want available only in this repository.
+
+## When To Use
+
+- Use this skill when working on:
+- Use this skill when the user asks about:
+- Use this skill when decisions depend on:
+
+## Core Rules
+
+- Put the most important domain constraints here.
+- Keep these as concrete rules, not general commentary.
+- Prefer short bullets over long explanations.
+
+## Workflow
+
+1. Identify the domain-specific question or task.
+2. Load only the references needed for that task.
+3. Apply the domain rules before making edits or recommendations.
+4. Validate the result against the domain constraints.
+
+## References
+
+- Add optional files under `references/` when detailed material is needed.
+- Add scripts under `scripts/` when parts of the workflow should be deterministic.
+- Add assets under `assets/` only when the skill needs files used in output.
+
+## Notes
+
+- Keep this skill local under `.ai/skills/` so it stays repo-specific.
+- Rename the folder and the `name` field to match the real domain.
+- Tighten the `description` so the skill triggers only for the intended work.