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migration-safety

Generate safe, reversible database schema migrations and review proposed ones for production hazards (table-rewrite locks, NOT-NULL-without-backfill, missing CONCURRENTLY, irreversible DROPs). Default focus PostgreSQL with Liquibase or Flyway; safety rules generalize to MySQL and SQLite. Use when the user mentions migration, schema change, alter table, add/drop column, add index, backfill, Liquibase, Flyway, or zero-downtime DDL.

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Install command

npx skills add https://github.com/toderian/project_template --skill migration-safety

Copy and paste this command into Claude Code to install the skill

Source

toderian/project_template

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UpdatedJune 3, 2026 at 21:38

SKILL.md

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name

migration-safety

description

Read and follow:

playbooks/skills/engineering/migration-safety.md

This Antigravity wrapper is generated from .claude-plugin/plugin.json. Keep Antigravity support experimental and isolated; update the shared playbook first.

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cross-repo-feature

toderian/project_template

Capture a concrete feature contract under docs/resources/<area>/contracts/<feature-slug>.md, including repo responsibilities, API/schema/event/env/CLI/Docker boundaries, compatibility, rollout order, and verification. Use when the user says "cross-repo feature", "feature contract", or asks to coordinate a change across repos.

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define-area

toderian/project_template

Define or refresh a durable docs/resources/<area>/ context for a domain or product capability, including participant repos, dependency graph, install modes, runtime dependencies, and known docs. Use when the user says "define area", "index area", "map area", or asks to establish cross-repo area knowledge.

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describe-component

toderian/project_template

Generate or refresh a docs-primary component CONTEXT.md describing responsibility, public interface, dependencies, data owned, invariants, and tests. Use when the user wants to "describe a component", "document this module/service", map a subsystem's boundaries, or onboard to/hand off a part of the codebase. Distinct from docs/resources/CONTEXT.md domain glossary work (that's grill-with-docs).

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diagnose

toderian/project_template

Disciplined diagnosis loop for hard bugs and performance regressions. Reproduce → minimise → hypothesise → instrument → fix → regression-test. Use when user says "diagnose this" / "debug this", reports a bug, says something is broken/throwing/failing, or describes a performance regression.

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distill-knowledge

toderian/project_template

Distill raw documents, notes, exports, or pasted context into Markdown digests and durable docs/resources knowledge-base updates. Use when the user says "distill knowledge", "process raw docs", "summarize these docs", "ingest docs", or points to docs/resources/_inbox/ material.

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execute-plan

toderian/project_template

Execute an approved task or implementation plan phase-by-phase, committing each completed phase and running repeated independent reviews. Use when the user says "execute plan", "execute-plan", or "/execute-plan", or points to docs/tasks_manager/_todos/<TASK>.md or docs/_plans/<slug>.md and wants it implemented.

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Source

toderian

toderian/project_template

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Useful forSOC

Database ArchitectsComputer and Mathematical Occupations15-1243L4