Morgan Lunt bec8d7c93a
code-modernization: vendor d3, viewer robustness, status command, pipeline fixes
Viewer (assets/topology-viewer.html):
- inline a minified d3 subset (hierarchy/pack, zoom, selection,
  interpolateZoom, ease; ISC license) instead of loading from a CDN —
  the page is now fully self-contained and works on air-gapped networks
- handle duplicate node ids (unique-suffix; edges bind to the first
  occurrence) and store parent references directly, fixing
  level-of-detail and selection corruption with messy generated data
- share one reveal rule between drawing, edge culling, and hit-testing
  so edges no longer draw into collapsed containers
- pre-bucket edges by kind and keep a per-node adjacency map; the
  hover/selection pass no longer scans every edge each frame
- cancel in-flight fly-to animations when a new one starts; clamp
  fly-to zoom to the zoom extent; derive max zoom from the smallest
  leaf so deep estates stay reachable
- render dead-end candidates (new deadEnds field) with a dashed
  outline and a sidebar badge
- clicking a node during a flow walkthrough exits the walkthrough;
  search results clear on selection and Escape; surrogate-safe label
  truncation; clearer stats line; explicit empty-topology message

Commands:
- new /modernize-status: read-only progress report — artifact inventory
  with timestamps, staleness flags, secrets-hygiene checks, next step
- map: deadEnds in the topology schema; datastore names must be logical
  identifiers with credentials stripped from URLs/DSNs
- brief: read topology.json + .mmd files (not the interactive HTML);
  staleness check against inputs; effort unit aligned to person-months
- transform: secret-safe characterization-test prompt; diff -y fallback
  when delta is missing; credential-safe diff selection
- reimagine: target vision is everything after the first argument (was
  silently truncated to one word); masking rules in spec/scaffold/
  handoff prompts
- brief/transform/reimagine: human-approval gates phrased as explicit
  stop-and-wait instead of 'enter plan mode'
- preflight: delta in the tool table; brief added to the verdict list
- README: preflight/status in the workflow; legacy/ deny list also
  covers Write; plugin + marketplace descriptions updated
2026-06-09 08:48:04 -07:00

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---
description: Generate a phased Modernization Brief — the approved plan that transformation agents will execute against
argument-hint: <system-dir> [target-stack]
---
Synthesize everything in `analysis/$1/` into a **Modernization Brief** — the
single document a steering committee approves and engineering executes.
Target stack: `$2` (if blank, recommend one based on the assessment findings).
Read `analysis/$1/ASSESSMENT.md`, `analysis/$1/topology.json` (plus the
`.mmd` files alongside it — do NOT read `TOPOLOGY.html`, it's an
interactive viewer with the data minified inside), and
`analysis/$1/BUSINESS_RULES.md` first. If any are missing, say so and
stop — they come from `/modernize-assess`, `/modernize-map`, and
`/modernize-extract-rules` respectively. Run those first.
**Staleness check:** compare modification times. If any input is newer
than an existing `MODERNIZATION_BRIEF.md`, the brief is being justifiably
regenerated; but if an existing brief is newer than all inputs and the
user re-ran this command anyway, ask what changed. Either way, note the
input timestamps in the brief's header so reviewers can see what it was
built from.
## The Brief
Write `analysis/$1/MODERNIZATION_BRIEF.md`:
### 1. Objective
One paragraph: from what, to what, why now.
### 2. Target Architecture
Mermaid C4 Container diagram of the *end state*. Name every service, data
store, and integration. Below it, a table mapping legacy component → target
component(s).
### 3. Phased Sequence
Break the work into 3-6 phases using **strangler-fig ordering** — lowest-risk,
fewest-dependencies first. For each phase:
- Scope (which legacy modules, which target services)
- Entry criteria (what must be true to start)
- Exit criteria (what tests/metrics prove it's done)
- Estimated effort (person-months, same unit as the assessment's COCOMO
figure — convert deliberately if you present weeks)
- Risk level + top 2 risks + mitigation
Render the phases as a Mermaid `gantt` chart.
### 4. Business Walkthroughs
For each persona flow in `analysis/$1/topology.json` (`flows` — produced
by `/modernize-map`), a short narrative table: persona, what happens in
business language, which legacy modules implement it today, and which
phase from §3 replaces each. This is the section non-technical approvers
actually read — it connects "Phase 2" to "what happens when a customer
files a claim". If topology.json has no flows, derive 23 walkthroughs
from the entry points and say they need SME confirmation.
### 5. Behavior Contract
List the **P0 rules** from BUSINESS_RULES.md (the ones tagged `Priority: P0`
money, regulatory, data integrity) that MUST be proven equivalent before any
phase ships. These become the regression suite. Flag any P0 rule with
Confidence < High as a blocker requiring SME confirmation before its phase
starts.
### 6. Validation Strategy
State which combination applies: characterization tests, contract tests,
parallel-run / dual-execution diff, property-based tests, manual UAT.
Justify per phase.
### 7. Open Questions
Anything requiring human/SME decision before Phase 1 starts. Each as a
checkbox the approver must tick.
### 8. Approval Block
```
Approved by: ________________ Date: __________
Approval covers: Phase 1 only | Full plan
```
## Present
Present a summary of the brief and **stop write nothing further until
the user explicitly approves** (use plan mode if the session supports
it). This gate is the human-in-the-loop control point; "no objection" is
not approval.