{"slug":"levnikolaevich-ln-76-architecture-migration-planner","name":"ln-76-architecture-migration-planner","description":"Plans a reversible architecture migration with compatibility, data movement, rollout, and rollback. Use for current-to-target transitions; not execution, generic planning, or delivery review.","long_description":"---\nname: ln-76-architecture-migration-planner\ndescription: \"Plans a reversible architecture migration with compatibility, data movement, rollout, and rollback. Use for current-to-target transitions; not execution, generic planning, or delivery review.\"\n---\n\n# Architecture Migration Planner\n\n**Goal:** Create a safe, reversible transition from an evidenced current architecture to an explicit target architecture. Change only the approved migration document; do not execute migrations, edit product code, build a generic task plan, approve delivery, or hide irreversible steps.\n\n**Execution contract:** Treat the ordered checkbox workflow below as this skill's Definition of Done. Track every checkbox as `PENDING`, then resolve it to `PROVEN` with concrete evidence, `CLEARED` with evidence that its conditional trigger is absent, or `UNPROVEN`; reading, mentioning, delegating, skipping, or tool failure is not proof.\nBefore returning, resolve every `PENDING`, count only `PROVEN` and `CLEARED` items as complete, apply this skill's verdict, decision, and approval rules to every `UNPROVEN`, and prepend **Checklist: X/Y complete**<br>**Incomplete: None | section/item — reason; outcome impact; exact next action**; list every `UNPROVEN` item.\n\n## Tool Routing\n\n| Need | Preferred capability | Fallback |\n|---|---|---|\n| Current and target states | Repository evidence plus approved architecture artifacts | Explicit user-provided states with limitations |\n| Consumers and compatibility | Language intelligence, schema tools, config search, telemetry, and direct inspection | Conservative inventory marked `UNVERIFIED` |\n| Data scale and runtime risk | Production metrics, checked-in reports, migrations, and workload evidence | Ranges with validation gates before execution |\n| External migration constraints | Official vendor migration and compatibility guidance | Mark dependent phases `BLOCKED` or `UNVERIFIED` |\n| Document mutation | Minimal patch to the approved migration-plan artifact | Return `BLOCKED` when authority or path is unclear |\n\nA migration phase must leave the system in a supported state. Additive and reversible steps precede cutover; destructive cleanup follows verified zero use.\n\n## Artifact Rules\n\n- Reuse a clear architecture migration document; otherwise use `docs/architecture/migration-plan.md`.\n- Treat current-state, target-design, baseline, decisions, diagrams, interfaces, and telemetry as optional shared evidence.\n- Keep the plan architectural: phases, compatibility, data, topology, gates, rollback, ownership, and removal.\n- Leave file-level implementation tasks to downstream planning.\n- Separate preparation, coexistence, migration, cutover, stabilization, and removal.\n- Never describe rollback as \"revert\" when data or external effects are not reversible.\n- Give every destructive step explicit approval, backup, restoration, and zero-consumer evidence requirements.\n\n## Checklist\n\n### 1. Establish the Transition Contract\n\n- [ ] Resolve migration scope, business outcome, current state, target state, non-goals, deadline or horizon, owners, and approved destination.\n- [ ] Read repository instructions, Git state, relevant architecture artifacts, migrations, deployment configuration, and compatibility policies.\n- [ ] Verify that current and target states are specific enough to compute a gap; return `BLOCKED` rather than invent either state.\n- [ ] Identify protected user journeys, invariants, SLOs, recovery objectives, compliance duties, and change windows.\n- [ ] Keep the run read-only except for the approved migration document.\n\n### 2. Build the Gap and Dependency Map\n\n- [ ] Inventory affected modules, deployables, data stores, schemas, APIs, events, configuration, infrastructure, and operational procedures.\n- [ ] Inventory internal and external consumers, owners, versions, traffic, data volume, and evidence quality.\n- [ ] Map current-to-target changes in boundaries, ownership, contracts, data, runtime topology, observability, and failure behavior.\n- [ ] Identify shared mutable resources, sequencing dependencies, long-running work, mixed-version windows, and irreversible effects.\n- [ ] Record unknown consumers or usage as migration risks; absence of search results is not zero usage.\n\n### 3. Design Compatibility and Data Safety\n\n- [ ] Define old/new contract compatibility, version negotiation, adapters, dual-read or dual-write behavior, and deprecation policy where relevant.\n- [ ] Use expand/migrate/contract for schema and data-shape changes; keep additive and destructive operations in separate releases.\n- [ ] Define backfill selection, batching, throttling, idempotency, checkpoints, retries, reconciliation, and correctness oracle.\n- [ ] Define source of truth during coexistence and conflict handling for concurrent writes.\n- [ ] Define backup, restore, RPO/RTO impact, privacy, retention, and audit evidence for data movement.\n\n### 4. Build Reversible Phases\n\n- [ ] Define preparation, shadow or coexistence, progressive migration, cutover, stabilization, and old-path removal as independently verifiable phases.\n- [ ] For every phase, state prerequisites, changed architecture state, owner, entry gate, observable success, abort condition, rollback or roll-forward action, and exit evidence.\n- [ ] Define feature flags, routing controls, canary cohorts, rate limits, maintenance windows, and blast-radius controls where justified.\n- [ ] Define metrics, logs, traces, reconciliation reports, dashboards, alerts, and SLO gates needed before traffic or data movement.\n- [ ] Keep old and new versions interoperable through realistic deployment ordering and rollback windows.\n\n### 5. Plan Cutover and Removal\n\n- [ ] Define go/no-go authority, communication, freeze conditions, exact cutover control, and immediate verification.\n- [ ] Define rollback boundaries separately for code, configuration, traffic, schema, and already-migrated data.\n- [ ] Require measured zero use, migrated consumers, retention expiry, and explicit approval before destructive removal.\n- [ ] List old code paths, contracts, flags, adapters, jobs, data, infrastructure, dashboards, and documentation to remove.\n- [ ] Define post-cutover observation period, ownership handoff, incident response, and closure evidence.\n\n### 6. Write and Report\n\n- [ ] Write transition summary, state gap, dependencies, compatibility, data plan, phased sequence, gates, observability, rollback, removal, owners, assumptions, and open decisions.\n- [ ] Link shared artifacts by stable repository path or title without requiring a particular workflow.\n- [ ] Re-read every phase for unsupported zero-downtime, zero-loss, consumer, capacity, or reversibility claims.\n- [ ] Confirm no migration, code, test, deployment, task tracker, or external change was executed.\n- [ ] Use `READY` only when phases are safely executable inputs to implementation planning; use `REVISE` for material compatibility, data, gate, or rollback gaps; use `BLOCKED` when current state, target state, authority, or safety evidence is unavailable.\n\n## Output Contract\n\n```markdown\n# Architecture Migration Plan\n\n**Verdict:** READY | REVISE | BLOCKED\n**Artifact:** path\n\n## State transition\n- Current state, target state, gap, consumers, and invariants\n\n## Phases\n| Phase | Entry gate | Change | Success evidence | Abort condition | Rollback or roll-forward |\n|---|---|---|---|---|---|\n\n## Data, compatibility, and removal\n- Coexistence, migration, reconciliation, cutover, and zero-use proof\n\n## Open decisions and residual risks\nOnly items that can change safety, ordering, or reversibility.\n```\n","tagline":"Plans a reversible architecture migration with compatibility, data movement, rollout, and rollback. 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After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"levnikolaevich-ln-76-architecture-migration-planner\",\"task\":\"Install ln-76-architecture-migration-planner\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"ln-76-architecture-migration-planner\" from https://github.com/levnikolaevich/claude-code-skills/tree/master/plugins/architecture-suite/skills/ln-76-architecture-migration-planner into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Plans a reversible architecture migration with compatibility, data movement, rollout, and rollback. Use for current-to-target transitions; not execution, generic planning, or delivery review. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"levnikolaevich-ln-76-architecture-migration-planner\",\"task\":\"Install ln-76-architecture-migration-planner\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/levnikolaevich-ln-76-architecture-migration-planner/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/levnikolaevich-ln-76-architecture-migration-planner"},"trust":{"score":78,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"554 GitHub stars","repoActivity":"554 stars, 83 forks","lastPushed":"7d since push","license":"MIT","repository":"https://github.com/levnikolaevich/claude-code-skills/tree/master/plugins/architecture-suite/skills/ln-76-architecture-migration-planner","install":"npx skills add levnikolaevich/claude-code-skills --skill ln-76-architecture-migration-planner","installSafety":"standard package or runtime install path","permissionSurface":"filesystem or document access, database access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["The provided SKILL.md excerpt is truncated; the full checklist and tool routing may be incomplete in the excerpt, but the visible content is well-structured.","Quality score needs review"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":82,"risk_level":"safe_to_try","risk_label":"Safe to try","warnings":["The provided SKILL.md excerpt is truncated; the full checklist and tool routing may be incomplete in the excerpt, but the visible content is well-structured.","Quality score needs review"]},"safety_gate":{"tier":"reviewed","label":"Reviewed with permission notes","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Require human approval before installing into a real workspace."},"quality":{"score":75,"label":"Strong"},"supply":{"track":"Coding and developer agents","scenario":"GitHub automation","maintenance":"7d since push","risk":"Safe to try"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","The provided SKILL.md excerpt is truncated; the full checklist and tool routing may be incomplete in the excerpt, but the visible content is well-structured.","Quality score needs review","Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"agent_contract":{"task_input":"Use ln-76-architecture-migration-planner in an agent workflow","recommended_action":"Require human approval before installing into a real workspace.","install_policy":"review","minimum_review_before_use":["Trust: 78/100 Strong shortlist","Audit: 82/100 Safe to try","Safety: 62/100 Review before install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"levnikolaevich-ln-76-architecture-migration-planner (ln-76-architecture-migration-planner)","install_command":"npx skills add levnikolaevich/claude-code-skills --skill ln-76-architecture-migration-planner","risk_summary":"Safe to try; Reviewed with permission notes; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"levnikolaevich-ln-76-architecture-migration-planner","task":"Use ln-76-architecture-migration-planner in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/levnikolaevich-ln-76-architecture-migration-planner","api":"https://www.openagentskill.com/api/agent/skills/levnikolaevich-ln-76-architecture-migration-planner","audit":"https://www.openagentskill.com/skills/levnikolaevich-ln-76-architecture-migration-planner/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=levnikolaevich-ln-76-architecture-migration-planner&task=Use%20ln-76-architecture-migration-planner%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20ln-76-architecture-migration-planner%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20ln-76-architecture-migration-planner%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/levnikolaevich-ln-76-architecture-migration-planner/install","manifest":"https://www.openagentskill.com/api/registry/manifest/levnikolaevich-ln-76-architecture-migration-planner"}},"supply_profile":{"track":{"slug":"coding","label":"Coding and developer agents","shortLabel":"Coding","description":"Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills."},"scenario":{"label":"GitHub automation","description":"I need my agent to triage GitHub issues, review pull requests, and summarize repository changes.","useCases":[{"slug":"github-automation","title":"GitHub automation"},{"slug":"research-agents","title":"Research agents"},{"slug":"security-compliance","title":"Security and compliance"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add levnikolaevich/claude-code-skills --skill ln-76-architecture-migration-planner","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":554,"starsLabel":"554","forks":83,"license":"MIT","qualityScore":75,"trustScore":78,"auditScore":82},"maintenance":{"status":"fresh","label":"7d since push","daysSincePush":7,"lastPushedAt":"2026-08-29T14:22:11+00:00"},"risk":{"level":"safe_to_try","label":"Safe to try","requiresReview":true,"notes":["The provided SKILL.md excerpt is truncated; the full checklist and tool routing may be incomplete in the excerpt, but the visible content is well-structured.","Quality score needs review"]},"coverageTags":["Coding","GitHub automation","design-creative","agent-skill"]},"audit":{"audit_score":82,"risk_level":"safe_to_try","risk_label":"Safe to try","quality_score":75,"trust_score":78,"maintenance_score":100,"security_score":81,"install_score":92,"warnings":["The provided SKILL.md excerpt is truncated; the full checklist and tool routing may be incomplete in the excerpt, but the visible content is well-structured.","Quality score needs review"]},"quality_signals":{"model":"v2","star_score":19.21,"usage_score":0,"review_score":5.55,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code"],"use_cases":[{"slug":"github-automation","title":"GitHub automation","url":"https://www.openagentskill.com/use-cases/github-automation"},{"slug":"research-agents","title":"Research agents","url":"https://www.openagentskill.com/use-cases/research-agents"},{"slug":"security-compliance","title":"Security and compliance","url":"https://www.openagentskill.com/use-cases/security-compliance"},{"slug":"legal-compliance","title":"Legal and compliance","url":"https://www.openagentskill.com/use-cases/legal-compliance"}],"stacks":[{"slug":"research-report-agent","title":"Research report agent","url":"https://www.openagentskill.com/collections/research-report-agent"},{"slug":"coding-review-agent","title":"Coding review agent","url":"https://www.openagentskill.com/collections/coding-review-agent"},{"slug":"frontend-product-ui","title":"Frontend and UI","url":"https://www.openagentskill.com/collections/frontend-product-ui"}],"install":"npx skills add levnikolaevich/claude-code-skills --skill ln-76-architecture-migration-planner","install_targets":[{"id":"openagentskill-cli","label":"CLI","title":"OpenAgentSkill CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add levnikolaevich-ln-76-architecture-migration-planner","description":"Resolve policy, run the source installer safely, and report a verified install receipt.","copyLabel":"Copy command"},{"id":"codex","label":"Codex","title":"Codex install prompt","kind":"agent-prompt","value":"Install the \"ln-76-architecture-migration-planner\" agent skill from https://github.com/levnikolaevich/claude-code-skills/tree/master/plugins/architecture-suite/skills/ln-76-architecture-migration-planner. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Plans a reversible architecture migration with compatibility, data movement, rollout, and rollback. Use for current-to-target transitions; not execution, generic planning, or delivery review. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"levnikolaevich-ln-76-architecture-migration-planner\",\"task\":\"Install ln-76-architecture-migration-planner\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Give Codex a repo-aware install prompt when the skill is not available through a local CLI.","copyLabel":"Copy prompt"},{"id":"claude-code","label":"Claude Code","title":"Claude Code skill prompt","kind":"agent-prompt","value":"Add \"ln-76-architecture-migration-planner\" as a Claude Code skill from https://github.com/levnikolaevich/claude-code-skills/tree/master/plugins/architecture-suite/skills/ln-76-architecture-migration-planner. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Plans a reversible architecture migration with compatibility, data movement, rollout, and rollback. Use for current-to-target transitions; not execution, generic planning, or delivery review. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"levnikolaevich-ln-76-architecture-migration-planner\",\"task\":\"Install ln-76-architecture-migration-planner\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this prompt to ask Claude Code to add the skill and explain the local activation steps.","copyLabel":"Copy prompt"},{"id":"cursor","label":"Cursor","title":"Cursor rule prompt","kind":"agent-prompt","value":"Turn \"ln-76-architecture-migration-planner\" from https://github.com/levnikolaevich/claude-code-skills/tree/master/plugins/architecture-suite/skills/ln-76-architecture-migration-planner into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Plans a reversible architecture migration with compatibility, data movement, rollout, and rollback. Use for current-to-target transitions; not execution, generic planning, or delivery review. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"levnikolaevich-ln-76-architecture-migration-planner\",\"task\":\"Install ln-76-architecture-migration-planner\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this when installing as Cursor project rules or reusable agent instructions.","copyLabel":"Copy prompt"}],"repository":"https://github.com/levnikolaevich/claude-code-skills/tree/master/plugins/architecture-suite/skills/ln-76-architecture-migration-planner","github_repo":"levnikolaevich/claude-code-skills","version":"1.0.0","license":"MIT","urls":{"web":"https://www.openagentskill.com/skills/levnikolaevich-ln-76-architecture-migration-planner","repository":"https://github.com/levnikolaevich/claude-code-skills/tree/master/plugins/architecture-suite/skills/ln-76-architecture-migration-planner","api":"/api/agent/skills/levnikolaevich-ln-76-architecture-migration-planner","install_api":"/api/skills/levnikolaevich-ln-76-architecture-migration-planner/install"},"meta":{"created_at":"2026-08-29T15:36:52.721727+00:00","updated_at":"2026-09-01T11:59:28.941454+00:00","agent_friendly":true}}