Adds a third build method alongside transform (cross-stack rewrite) and
reimagine (greenfield): uplift, for same-stack version bumps (.NET Framework
4.8 -> .NET 8, Spring Boot 2->3, Python 2->3) where the right move is to
PRESERVE the code and fix only the version deltas, not extract intent and
rewrite.
- commands/modernize-uplift.md: delta-catalog-driven, dual-target test harness
(one suite on both runtimes; baseline-on-old is the oracle), leaf-first build
graph ordering, minimal-diff discipline (architecture-critic flags gratuitous
divergence), and a 'this is a rewrite, use transform' escape hatch.
- agents/version-delta-analyst.md: finds the source->target breaking changes
that THIS code hits; drives the ecosystem migration tool (upgrade-assistant /
OpenRewrite / pyupgrade / ng update) and owns the residue; read-only.
- workflows/uplift-deltas.js: parallel finder per delta category, each verified
against the cited code so deltas that don't apply here are dropped.
- Wired into assess (recommended-pattern routing), brief (per-phase command +
leaf-first ordering), preflight (dual-run + tool readiness), status, README.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
COCOMO's constants encode human-team productivity; presenting its
person-months as how long an agentic modernization will take (or cost) is
a claim we should not make. Reframe COCOMO everywhere as a RELATIVE
complexity/scale index for ranking and sequencing systems only:
- assess: capture COCOMO as a complexity index; explicitly ignore scc's
'Estimated Schedule Effort' and cost-in-dollars; ASSESSMENT 'Effort
Estimation' section becomes 'Relative Scale' with a not-a-timeline note;
portfolio heat-map column renamed Complexity (COCOMO index).
- brief: phase plan uses relative T-shirt sizing, not person-months/weeks;
phases render as a dependency flowchart, not a gantt (gantt = calendar).
- portfolio-assess.js: field cocomoPm -> complexityIndex; return label
carries the not-a-duration caveat.
- README: 'A note on COCOMO' explains the index framing and points at
better intrinsic-complexity proxies.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Legacy code often cannot build locally by nature — CICS/IMS programs
have no local translator and the real runtime may be a mainframe the
user doesn't have. Stopping transform on a failed legacy smoke compile
would block exactly those systems.
- transform Step 0a: the target toolchain remains required (its tests
cannot run without it); a failed or impossible legacy compile no
longer stops the run — the equivalence strategy switches to recorded
traces / golden-master fixtures, and that downgrade is stated in the
plan and in TRANSFORMATION_NOTES.md so reviewers know the strength of
the proof
- preflight: a red legacy toolchain now yields Ready-with-gaps for
transform/reimagine instead of Not-ready
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
modernize-map previously rendered the call graph and data lineage as
static Mermaid diagrams, which become unreadable once a node has ~10+
edges — exactly the shape of real legacy systems. It now builds an
interactive viewer from a shipped template (assets/topology-viewer.html):
a zoomable circle-pack of domains/modules sized by LOC, rendered to
canvas with level-of-detail reveal, dependency edges with per-kind
toggles, search with fly-to, a per-node detail sidebar, and a flow
walkthrough mode. Small domain-level .mmd exports remain for docs.
- topology.json now has a documented schema (hierarchy + edges + entry
points + observations + flows) consumed by the viewer
- map traces 2-4 business flows anchored to personas (claimant,
operator, auditor), each step in plain business language mapped to
the modules that implement it; the viewer plays them as numbered
paths
- brief gains a Business Walkthroughs section connecting each persona
flow to the phase that replaces it
- new modernize-preflight command: detects the stack, checks analysis
tooling, smoke-compiles a real source file with the legacy toolchain,
inventories missing copybooks/descriptors/binary-only artifacts, and
writes a per-command readiness verdict
- transform now verifies legacy + target toolchains before its plan
gate instead of failing at test time
- README: commands updated, optional-tooling section reframed as 'what
to give Claude'
