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Structured workflow (assess → map → extract-rules → reimagine → transform → harden) and specialist agents (legacy-analyst, business-rules-extractor, architecture-critic, security-auditor, test-engineer) for modernizing legacy codebases into current stacks.
61 lines
2.0 KiB
Markdown
61 lines
2.0 KiB
Markdown
---
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description: Generate a phased Modernization Brief — the approved plan that transformation agents will execute against
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argument-hint: <system-dir> [target-stack]
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---
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Synthesize everything in `analysis/$1/` into a **Modernization Brief** — the
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single document a steering committee approves and engineering executes.
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Target stack: `$2` (if blank, recommend one based on the assessment findings).
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Read `analysis/$1/ASSESSMENT.md`, `TOPOLOGY.md`, and `BUSINESS_RULES.md` first.
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If any are missing, say so and stop.
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## The Brief
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Write `analysis/$1/MODERNIZATION_BRIEF.md`:
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### 1. Objective
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One paragraph: from what, to what, why now.
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### 2. Target Architecture
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Mermaid C4 Container diagram of the *end state*. Name every service, data
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store, and integration. Below it, a table mapping legacy component → target
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component(s).
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### 3. Phased Sequence
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Break the work into 3-6 phases using **strangler-fig ordering** — lowest-risk,
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fewest-dependencies first. For each phase:
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- Scope (which legacy modules, which target services)
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- Entry criteria (what must be true to start)
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- Exit criteria (what tests/metrics prove it's done)
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- Estimated effort (person-weeks, derived from COCOMO + complexity data)
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- Risk level + top 2 risks + mitigation
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Render the phases as a Mermaid `gantt` chart.
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### 4. Behavior Contract
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List the **P0 behaviors** from BUSINESS_RULES.md that MUST be proven
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equivalent before any phase ships. These become the regression suite.
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### 5. Validation Strategy
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State which combination applies: characterization tests, contract tests,
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parallel-run / dual-execution diff, property-based tests, manual UAT.
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Justify per phase.
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### 6. Open Questions
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Anything requiring human/SME decision before Phase 1 starts. Each as a
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checkbox the approver must tick.
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### 7. Approval Block
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```
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Approved by: ________________ Date: __________
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Approval covers: Phase 1 only | Full plan
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```
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## Present
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Enter **plan mode** and present a summary of the brief. Do NOT proceed to any
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transformation until the user explicitly approves. This gate is the
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human-in-the-loop control point.
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