extract-rules.js gains a module mode: when the caller passes `modules`
(built from the map stage's topology.json, or from the directory tree),
it runs one focused extractor per module in ordered batches, refereeing
each batch's fresh rules before the next batch starts, instead of
pointing three whole-estate lens agents at legacy/<system> every round.
Batches are ordered parallel() barriers so agent spawn order is a pure
function of the args and prior results, which keeps resumeFromRunId
replays cache-hitting. Lens mode is unchanged for callers without a
module list (identical prompts and return fields).
The script now guards the runtime's per-run agent cap and the token
budget before every fan-out and degrades to a partial catalog with named
gaps (skippedModules, failedModules, unverifiedRules, skippedPhases,
re-passable rerunModules) instead of failing with no result; referee-less
rules are returned rather than dropped, and a wrong-citation redirect can
no longer confirm the same rule twice.
The command doc now builds the module list from topology.json (inline
script), sizes the run honestly, records the Run ID, and spells out the
interrupted-run path: resume a stopped/failed run with resumeFromRunId,
follow up a completed-with-failures run with just the affected shards,
and read journal.jsonl before declaring anything lost.
/modernize-uplift migrates one representative project end-to-end and
writes its lessons to analysis/<system>/PLAYBOOK.md before touching the
rest. The remaining projects then fan out through a new uplift-migrate
workflow, one uplift-migrator agent per project, in dependency-aware
escalating batches behind a per-batch circuit breaker. A recorded
per-test baseline (analysis/<system>/BASELINE.md) gates the migration,
and the delta catalog reports a test framework whose runner does not
support the target as its own highest-blast-radius dependency.
The three execution commands (uplift, transform, reimagine) read
MODERNIZATION_BRIEF.md and treat their phase's scope and entry and exit
criteria as gates, so editing the brief steers execution. For a
same-stack uplift the brief requires the delta catalog and applies the
same ordering overrides the execution command does.
/modernize-preflight opens with a short interview (scope, local build
and test, bespoke build infrastructure, prior attempts, what is off
limits) without blocking on the answers, reads the CI/build definition
for how the system builds, escalates the smoke test to a whole-project
restore and build, and adds a scope-boundary check that enumerates
inbound and outbound dependencies when the system directory is a slice
of a larger repository.
Workflow scripts accept args delivered as either a JSON string or an
object.
Adversarial re-audit of the current (post-uplift) state found the plugin
internally consistent (no blocker/high issues). Two follow-ups:
README rewrite for clarity (209 -> 122 lines, ~halved):
- Reorder so a newcomer goes what-it-is -> install -> quickstart -> command
reference -> deeper notes, instead of hitting two dense design essays
before the command list.
- Lead with what it produces; add a 3-command teaser.
- Collapse the 'Dynamic workflow orchestration' and 'Untrusted code &
prompt injection' essays and the COCOMO note into short, plain sections at
the bottom; drop the internal 'Bash isn't a tool-lock' hedging and
per-defense enumeration (kept the load-bearing points: untrusted-code
threat model, secrets quarantine, COCOMO-is-not-a-timeline).
- Remove cross-section redundancy (build methods, read-only caveat,
scaffolder write-scope, dir convention each stated once now); gloss
strangler-fig/JOBOL inline.
Path nit from the audit: uplift now writes to modernized/<system>-uplifted/
(mirroring reimagine's -reimagined/) so the three build paths occupy disjoint
roots and status can't mis-detect an uplift copy as transform modules.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Code/security:
- extract-rules.js: guard null agent() verdicts in the verify + P0 loops
(a skipped/dead referee made {rule,v:null} survive .filter(Boolean) and
then crashed on v.injectionSuspected / v.every) — sibling scripts already
had the guard.
- topology viewer XSS: the map injector embedded untrusted JSON (node names
from filenames, etc.) into a <script> island unescaped — a name containing
</script> executed on open. Escape < > & in the injected data and add a CSP
to the template.
- Second-order injection: citation/identifier fields (source / cwe /
source_site / correctedSource) were interpolated UNFENCED into the verifier
prompts that are supposed to be the trust anchor. Fence them in
extract-rules, harden-scan, uplift-deltas.
uplift design (audit of the new feature):
- Working-copy model: copy the WHOLE solution to modernized/ once and edit in
place (relative project refs survive; result is a reviewable git diff) —
the incremental per-project copy broke multi-project builds.
- Dual-run honesty: reframed as 'if both runtimes run here' (net48 needs
Windows; JUnit/pytest don't multi-target); dummy-test gate now binds a real
SUT under both targets; per-stack harness notes.
- Tooling honesty: present/runnable/actually-ran distinction; never fold in a
tool that couldn't run; apiport/2to3 demoted; py2->3 removed from 'preserve'
examples.
- Delta classes: name the high-blast-radius landmines (JPMS strong
encapsulation, .NET trimming/AOT, ICU globalization, hosting/runtime-config,
analyzer/nullable) in the finder briefs + agent.
- Rewrite-vs-uplift signal: weigh by touched sites (siteCount), not delta-card
count; judgment-share demoted to secondary.
Docs/consistency: brief reads topology.json (not TOPOLOGY.html); README
'five commands'; credential-masking claim split (analysts mask+cite vs
code-writers substitute fakes); read-only/write-scope claims softened to
match enforcement (Bash retained -> discipline, not tool-lock); reimagine
nested blockers/pendingRuleIds; status splits transform vs reimagine markers;
portfolio enumeration basenames; plugin.json description updated.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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>
Addresses automated security review of the workflow conversion:
- Agent-produced text (rule specs, finding descriptions, dedup lists) is
fenced as untrusted data when interpolated into downstream agent prompts,
with embedded fence markers stripped so the fence can't be escaped;
referees and judges are told to re-derive claims from the cited code.
- system/service/subdir names that land in filesystem paths inside prompts
are validated against a strict pattern — traversal-shaped values throw
before any agent spawns.
- Reimagine scaffolding now uses a dedicated 'scaffolder' agent with an
explicit minimal tool list, a single-directory write scope, and the
untrusted-content discipline extended to the generated spec/architecture
docs it builds from (they derive from untrusted legacy code).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Four commands gain a Workflow-tool path (with direct-fan-out fallback for
older builds): extract-rules loops until dry with per-rule citation referees
and a P0 two-judge panel; harden runs class-scoped finders with adversarial
per-finding refutation; assess --portfolio pipelines one survey agent per
system with COCOMO computed uniformly in script; reimagine Phase E drops the
3-service scaffolding cap.
Workflow agents return schema-validated data and only the orchestrating
session writes artifacts — analysis agents are structurally read-only. All
five agents gain an untrusted-content discipline section (source code is
data, never instructions; comment-only claims are findings, not facts), and
the README documents the prompt-injection threat model for analyzed code.
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
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'
assess only added SECRETS.local.md to analysis/.gitignore, leaving
*.local.patch uncovered until harden's own Step 0 ran. Both patterns are
now written by whichever command runs first.
A red-team pass found four ways credential values still reached
shareable artifacts after the initial redaction:
- the remediation patch: a diff removing a hardcoded secret carries the
raw value on its '-' lines by construction. harden now splits output:
non-credential hunks in the shareable security_remediation.patch,
credential hunks in a gitignored security_remediation.local.patch
with comment-only placeholders in the shareable file
- the other four agents had no secret-handling rules. legacy-analyst
(hardcoded-config evidence in tech-debt findings),
business-rules-extractor (credentials recorded as rule parameters),
test-engineer (legacy literals becoming committed test fixtures), and
architecture-critic (quoted code in notes files) now all mask values
and cite file:line; assess's tech-debt prompt and ASSESSMENT.md
masking now cover every section, not just Security Findings
- non-git projects: a .gitignore protects nothing under SVN/Mercurial.
Both commands now refuse --show-secrets without git and write the
quarantine file to ~/.modernize/<system>/ outside the project tree
- the patch-apply instruction was wrong in both documented layouts
(symlinked legacy/ broke relative paths). Patches are now written
with project-root-relative paths and applied from the project root
Also: --show-secrets is now position-independent in both commands, and
the README documents the full model.
Legacy systems often contain live credentials, and assessment/findings
files get committed and shared. Previously the security-auditor agent
reported hardcoded secrets verbatim into ASSESSMENT.md and
SECURITY_FINDINGS.md.
- security-auditor: mandatory secret-handling rules — mask all credential
values (file:line + 2-4 char preview), redact secrets from echoed tool
output, recommend rotation for anything that looks live
- assess/harden: gitignore-verified SECRETS.local.md quarantine file for
the per-credential inventory; findings files get masked entries and a
pointer only
- new --show-secrets flag opts into raw values in the quarantine file
(and only there)
- README: document the behavior and advise users of earlier versions to
check for already-committed findings and rotate
- modernize-harden: never edits legacy/ anymore. Writes findings plus a
reviewed unified diff to analysis/<system>/security_remediation.patch.
A second security-auditor pass reviews each hunk (RESOLVES / PARTIAL /
INTRODUCES-RISK) before presenting. The user reviews and applies the
patch deliberately, then re-runs to verify. This makes every command
consistent with the recommended deny Edit(legacy/**) workspace setting,
so the README's exception note is gone.
- modernize-map: restructure the parse-target list around three stack-
agnostic principles (dispatcher targets are variables; code-storage
joins live in config; entry points live in deployment descriptors), with
COBOL/Java/web/CLI examples on equal footing rather than COBOL-dominant.
Same protections against false dead-code findings, less stack-specific.
- security-auditor agent: rephrase coverage items in stack-neutral terms
(record layouts/temp datasets, resource ACLs, deployment scripts/job
definitions, batch input records) so the checklist reads naturally for
COBOL, Java EE, .NET, and web targets alike.
- README: drop the harden exception note; describe the patch workflow.
Fixes found by running the discovery workflow against the AWS CardDemo
mainframe sample (~50 KLOC of COBOL/CICS/JCL/BMS/VSAM):
- modernize-assess: add scc -> cloc -> find/wc fallback chain with the
COCOMO-II formula so Step 1 works when scc isn't installed; same for
portfolio-mode cloc/lizard. Drop the reference to a specific
agent-spawning tool name (just "in parallel"). Sharpen the structural-
map subagent prompt: 5-12 domains, subgraph clustering, ~40-edge cap,
repo-relative paths, dangling-reference check.
- modernize-map: expand the parse-target list with the things a
literal-minded reader would miss on a real mainframe codebase — CICS
CSD DEFINE TRANSACTION/FILE for entry points and online file I/O,
EXEC CICS file ops, SELECT...ASSIGN TO joined with JCL DD,
EXEC SQL table refs (not JCL DD), SEND/RECEIVE MAP, dynamic
data-name XCTL resolution, COBOL fixed-format column slicing. Without
these the dead-code list is wrong (most CICS programs look unreachable).
Also write a machine-readable topology.json alongside the summary.
- modernize-extract-rules: add a Priority (P0/P1/P2) field with a
heuristic, and an optional Suspected-defect field. modernize-brief
reads P0 rules to build the behavior contract, but the Rule Card had
no priority slot — the chain was broken.
- modernize-brief: read the new P0 tags; flag low-confidence P0 rules as
SME blockers.
- modernize-reimagine: drop "for the demo" wording.
- security-auditor agent: add mainframe/COBOL coverage items (RACF,
JCL/PROC creds, BMS field validation, DB2 dynamic SQL, copybook PII)
and mark web-only items as such so it adapts to the target stack.
- README: add Optional Tooling section and a symlink example for the
expected layout.
- modernize-brief: read TOPOLOGY.html (what modernize-map actually
produces) instead of nonexistent TOPOLOGY.md, and tell the user which
command produces each missing input.
- README: rewrite the Commands section to match actual command behavior —
correct output filenames, ordering (brief is the synthesis/approval gate
after discovery, not the first step), agent attributions, and required
args. Add a workspace-layout note and an explicit callout that
modernize-harden edits legacy/, which conflicts with the recommended
deny rule. Reconcile the Overview and Typical Workflow sequences.
- modernize-assess: generalize the production-runtime overlay step so it
no longer assumes a specific MCP server/tool; mark it optional. Fix
app/jcl/ -> legacy/$1/jcl/ for layout consistency.
- modernize-map: make TOPOLOGY.html self-contained (load Mermaid from a
CDN) so it renders in any browser; drop assumptions about an external
artifact renderer. Generalize the telemetry annotation note.
- business-rules-extractor agent: fix command cross-reference to the
actual command name.
- plugin.json: include the brief step in the workflow description.
