Fixes from an adversarial review of the new viewer:
- pin d3 to 7.9.0 and load it via dynamic import with an explicit
error panel when the CDN is unreachable (previously a blocked CDN
produced a silent dark page — a real concern for restricted networks)
- coerce ids/names/loc at intake: a single missing name or non-numeric
loc previously threw inside the render loop or propagated NaN through
the pack layout, blanking the canvas with no error
- normalize flows/steps/edges defensively (null entries, missing steps,
numeric ids vs string lookups)
- mirror the level-of-detail reveal rule in the hit test so clicks
can't select nodes that aren't drawn
- scope the Escape shortcut so clearing the search box doesn't reset
the viewport; set zoom clickDistance(4) so trackpad jitter doesn't
swallow selection clicks
- round canvas backing-store size (fractional devicePixelRatio caused
a reallocation every frame on 125%/150% display scaling)
- modernize-map: use braced ${CLAUDE_PLUGIN_ROOT} so substitution
actually happens, assert the injection marker exists in the template,
and correct the documented failure mode
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'
