propulsion — Watchdog Audit

Executive summary

Read through the Production lens — the standard calibration. *Green* means good enough to run in production. The score is absolute and comparable across repos.

jet/propulsion is sound in substance but carries real gaps (64%). It is not in crisis, but the issues below raise the cost of changing it — friction its consumers ultimately inherit.

It is strongest in Architecture (100%) — the structure is clean and changes stay contained. Domain Modelling (100%) is solid too.

The area that most needs attention is Readiness (52%) — releases are harder to depend on — versioning, release notes and dependency hygiene are thin, so consumers can't easily tell what changed or trust an upgrade. Security (68%) is the next concern — exposure to security and compliance incidents is elevated.

Leadership focus, highest impact first: Nothing pauses a release for a human (Deployment & Rollback); 1 Vulnerable finding(s) in Dependency Hygiene (Dependency Hygiene); 2 Deprecated finding(s) in Dependency Hygiene (Dependency Hygiene).

For scale: Small (~8,128 production lines); rebuilding it from scratch would take roughly ~0.1 person-years (~1 engineer). Approximate, ±~30%.

It builds on a genuinely strong Architecture foundation (100%); the priorities above are the highest-leverage way to bring the rest up to that level.

Code Health 88% Strong Architecture 100% ★ Exemplary Maturity 68% Adequate Readiness 52% Adequate · gated by P3 Security 68% Adequate · gated by D36 Domain Modelling 100% ★ Exemplary

How the score is built — each lens's share of the headline Width is the lens's weight in the worst-heaviest fold (the weakest area pulls hardest); colour is that lens's own band. A lens fixes the score in proportion to its width.

Readiness 52% · 46% weightSecurity 68% · 25% weightMaturity 68% · 14% weightCode Health 88% · 8% weightArchitecture 100% · 4% weightDomain Modelling 100% · 2% weight

Raise Readiness 52 → 70 (the Healthy floor) ⇒ headline 64 → ~72.

Code composition — where the lines go

Tests 100%

Rebuild cost & value ~ Modeled — €4,100–€21,000

Cost to rebuild	€4,100–€21,000 (0.1 person-years (69–217 h), ~1 engineer)
Domain complexity	Standard — harder problems cost more per line
Quality factor	0.9× (at 64% quality) — the last 20% of quality is most of the work
Size & shape	Small · effort split not classified (source measured from disk; the effort-tier breakdown is a C#-only syntax walk)

This codebase represents roughly ~0.1 person-years of build effort (about ~€12,000 to rebuild). Its weakest lens is Readiness at 52% — the part of that asset most exposed by the findings below.

How we model this: boilerplate at a scaffolding rate + logic × domain Standard (×1.2) — domain model × a 0.9× quality factor, at €60–95/h; indicative, ±~30% · size measured directly from source · effort from total production LoC as straight-line logic (the tier split is a C#-only syntax walk), a conservative lower bound. Indicative only — most sensitive to the hourly rate and the domain tier (both tunable in config).

Top priorities

The highest-leverage moves; the full ranked list is in the Roadmap below.

Resolve the 1 Vulnerable finding(s) in Dependency Hygiene.

+7.9 pts · Low effort · Dependency Hygiene

Resolve the 2 Deprecated finding(s) in Dependency Hygiene.

+7.7 pts · Low effort · Dependency Hygiene

Nothing pauses a release for a human: publish as a draft release (or gate the release job on a protected tag/manual dispatch) so a bad build can be stopped before users can download it.

+11.1 pts · Medium effort · Deployment & Rollback

Diagnosis — what's actually going on

Value concentrated against a weak lens · Medium · Value at risk

This is a Small asset (~0.1 person-years to rebuild), and its weakest lens is Readiness at 52%. The operational and business risk on an asset this size concentrates there — that's where remediation buys the most protection.

Evidence: valuation: Small, ~0.1 person-years rebuild (8,128 LoC) · weakest lens: Readiness 52%

→ Direct remediation budget at Readiness first — highest risk-reduction per euro on an asset this size.

Highest-leverage move · Medium · Leverage

Of everything flagged, the best return on effort is: Nothing pauses a release for a human: publish as a draft release (or gate the release job on a protected tag/manual dispatch) so a bad build can be stopped before users can download it. The rest can wait behind it.

Evidence: priority ranking: top of 5 ranked by impact/effort

→ Nothing pauses a release for a human: publish as a draft release (or gate the release job on a protected tag/manual dispatch) so a bad build can be stopped before users can download it.

Architecture — module dependency matrix

28 modules, 52 dependencies — 1 dependency cycle, shown as the red cell(s) above the diagonal. Rows and columns are the same modules, ordered so that a module only depends on ones above it. A cell means the row depends on the column, and its number is how many type pairs create that dependency. Read one thing: is anything above the diagonal? A mark there is a dependency cycle. (A cycle is all this shows — an unusual but cycle-free dependency sits below the diagonal like any other.)

At a glance — Code Health · 88% · Strong

The Good

D1 · .NET / C# Cyclomatic Complexity 8.9 D2 · .NET / C# Cognitive Complexity 7.7 D3 · .NET / C# God Classes 9.5 D4 · .NET / C# Code Duplication 9.1

At a glance — Architecture · 100% · Exemplary

The Good

D35 · .NET / C# Change Coupling 10.0

At a glance — Maturity · 68% · Adequate

The Good

D15 · .NET / C# Churn × Complexity Hotspots 10.0 D16 · .NET / C# Bus Factor 8.5 D19 · .NET / C# Documentation Quality 8.0 D21 · .NET / C# Naming Consistency 10.0 D34 · .NET / C# Knowledge Freshness 10.0 M1 · Repo Documentation (README) 7.3 M3 · Repo Folder & project structure 10.0

The Bad

M2 · Repo Architecture documentation 5.0 M4 · Repo Documentation accuracy 6.0

At a glance — Readiness · 52% · Adequate · gated by P3

The Good

D13 · .NET / C# Secret Scanning 10.0 P1 · Repo CI/CD gates 10.0 P6 · Repo Release Hygiene 10.0

The Bad

D12 · .NET / C# Dependency Hygiene 6.4 P4 · Repo Deployment & Rollback 5.0

The Ugly

P3 · Repo Security & performance tooling 0.0

At a glance — Security · 68% · Adequate · gated by D36

The Good

D28 · .NET / C# Secrets (history) 10.0 D29 · .NET / C# Static Analysis (SAST) 7.1 D37 · .NET / C# Vulnerability-disclosure Policy 10.0

The Ugly

D36 · .NET / C# Supply-chain Provenance & Signing 0.0

At a glance — Domain Modelling · 100% · Exemplary

The Good

DM1 · Repo Aggregate boundaries 10.0 DM5 · Repo Encapsulated state 10.0 DM8 · Repo Value-object opportunities 10.0

Security & Compliance — OWASP Top-10 mapping

Findings mapped to OWASP categories; the specific CVEs/secrets are in the Security dimension cards below and findings.md (redacted only on the public version of this report).

OWASP category	Findings	Severity
A03:2021 — Injection	2	High / Critical

Roadmap

First, implement an automated release gate to prevent bad builds from reaching users, ensuring immediate rollback capability. Next, address all dependency hygiene issues by resolving the single vulnerability, two deprecation warnings, and one prerelease dependency. Finally, establish a structured architecture decision record system to document significant design choices and their consequences.

Ranked by impact ÷ effort. "Helps" is the estimated gain on the 0–100 health score.

Do this	Helps	Effort	Dimension
Resolve the 1 Vulnerable finding(s) in Dependency Hygiene.	+7.9 pts	Low	Dependency Hygiene
Resolve the 2 Deprecated finding(s) in Dependency Hygiene.	+7.7 pts	Low	Dependency Hygiene
Nothing pauses a release for a human: publish as a draft release (or gate the release job on a protected tag/manual dispatch) so a bad build can be stopped before users can download it.	+11.1 pts	Medium	Deployment & Rollback
Resolve the 1 Prerelease dependency finding(s) in Dependency Hygiene.	+4.2 pts	Low	Dependency Hygiene
Record significant decisions one document per decision — dated, stating the context, the decision and its consequences — and keep them together wherever your design docs already live (a conventional `docs/adr/` tree with `NNNN-title.md` names is the most discoverable form).	+3.7 pts	Medium	Architecture documentation
Reconcile the README with reality: README advertises Docker containerisation, but no Dockerfile/compose file exists; README advertises a RAG / ML engine, but no ML/RAG code or dependency exists.	+3.7 pts	Medium	Documentation accuracy
Add an 'Architecture' / 'How it works' section to the root README — the high-level shape.	+3.3 pts	Medium	Documentation (README)
Resolve the 2 High finding(s) in Static Analysis (SAST) — start with ci.yaml (2).	+1.1 pts	Low	Static Analysis (SAST)

File quality

Per-file score 0–10 — a quality signature. Of 21 files carrying findings, judged against the Production bar: 0% slop · 57% mixed · 43% near-clean.

File	Score	Band	Worst signal
.github/workflows/ci.yaml	5.8	Mixed	Static Analysis (SAST): High: github-actions-mutable-action-tag
src/Propulsion/Streams.fs	7.0	Mixed	Cognitive Complexity: Engine`4.Pump (cognitive 22)
src/Propulsion.DynamoStore.Indexer/Handler.fs	7.2	Mixed	Cyclomatic Complexity: Handler.parse (cyclomatic 18)
src/Propulsion.DynamoStore/DynamoStoreSource.fs	7.4	Mixed	Cyclomatic Complexity: Impl.materializeIndexEpochAsBatchesOfStreamEvents (cyclomatic 20)
src/Propulsion.CosmosStore/CosmosStoreSink.fs	7.4	Mixed	Code Duplication: Duplicated block (7 lines × 2)
tools/Propulsion.Tool/Sync.fs	7.8	Mixed	Cyclomatic Complexity: Sync.run (cyclomatic 27)
src/Propulsion/Feed/FeedMonitor.fs	7.8	Mixed	Cyclomatic Complexity: FeedMonitor.AwaitCompletion (cyclomatic 23)
src/Propulsion.CosmosStore/ChangeFeedProcessor.fs	7.8	Mixed	Cyclomatic Complexity: ChangeFeedProcessor.Start (cyclomatic 19)
src/Propulsion.DynamoStore.Notifier/Handler.fs	7.8	Mixed	Cyclomatic Complexity: Handler.parse (cyclomatic 17)
src/Propulsion.DynamoStore/DynamoStoreIndex.fs	7.8	Mixed	Cognitive Complexity: StreamQueue.insert (cognitive 28)
src/Propulsion.CosmosStore/PropulsionCosmosStorePrometheus.fs	7.8	Mixed	Code Duplication: Duplicated block (12 lines × 2)
src/Propulsion.CosmosStore/ReaderCheckpoint.fs	7.8	Mixed	Code Duplication: Duplicated block (6 lines × 2)
src/Propulsion.MemoryStore/MemoryStoreSource.fs	8.5	Near-clean	Cognitive Complexity: MemoryStoreMonitor.AwaitCompletion (cognitive 19)
tools/Propulsion.Tool/Args.fs	8.5	Near-clean	Cognitive Complexity: Dynamo.dumpSummary (cognitive 18)
src/Propulsion.EventStoreDb/EventStoreSource.fs	8.5	Near-clean	Code Duplication: Duplicated block (11 lines × 2)
src/Propulsion.DynamoStore.Indexer/Function.fs	8.5	Near-clean	Code Duplication: Duplicated block (8 lines × 2)
src/Propulsion/Pipeline.fs	8.5	Near-clean	Code Duplication: Duplicated block (7 lines × 2)
src/Propulsion.DynamoStore.Constructs/DynamoStoreIndexerLambda.fs	8.5	Near-clean	Code Duplication: Duplicated block (7 lines × 2)
src/Propulsion.CosmosStore/FeedObserver.fs	8.5	Near-clean	Code Duplication: Duplicated block (5 lines × 2)
src/Propulsion.Kafka/Consumers.fs	8.5	Near-clean	Code Duplication: Duplicated block (5 lines × 2)

Methodology & how to trust this report

Watchdog is a deep, periodic assessment — run each sprint, monthly, or quarterly, taking the time to go wider and deeper than a quick check and surfacing in one coherent report what you'd otherwise piece together from a dozen separate tools. It scores deterministically: the same commit yields the same score, every run. 25 of 27 evaluated dimensions are computed purely by tools and static analysis (confidence 1.0); 2 documentation/naming judgement(s) are LLM-assisted and labelled advisory. Overall confidence is 0.5 — the weighted average across measured dimensions; it falls as more of the score leans on LLM-assisted judgement and rises when it's fully tool-backed.

Every figure here is one of three kinds, and we label which: ✓ Measured — a deterministic fact (LoC, complexity, coverage); ~ Modeled — an estimate from a stated model (cost, effort, value-at-risk), always a range with its assumptions, never a precise fact; ◐ Advisory — an LLM prose judgement. We never present a modelled estimate as if it were measured. Perfect or absent scores carry their provenance too (ADR-0011): ✓ Tool-verified means the property itself was measured across the surface; ○ Nothing flagged means the probes came back clean — a claim bounded by what a repository can show; ⊘ Not evidenced means a working control (a tested restore, an automated rollback) showed no positive evidence — absence of evidence is not evidence of a control, so it's excluded from the score rather than awarded a spurious 10; ◐ Sampled · advisory marks an LLM verdict over a bounded sample — advisory, never a deterministic measurement.

What we checked — 27 dimensions across the health lenses

D1D2D3D4D12D13D15D16D19D21D28D29D34D35D36D37DM1DM5DM8M1M2M3M4P1P3P4P6

Each chip is a dimension scored from real signals across architecture, testing, dependencies, security & compliance, documentation, git-history and code quality — in one coherent pass. A surface report typically covers a handful.

How to trust any code-health report — three questions

Can you open the finding? Real findings cite a repo-relative file and line you can open at the cited line — never an absolute scratch path. Here, 43 of 94 do; the remainder are repo-wide signals — a dimension-level measurement, not a single line. (Every path in this report is repo-relative by construction: paths are normalized at the producer and the report is rejected if any rooted path leaks through.)
Is there a tool behind the number? Every score below names the method that produced it — Roslyn, git, a scanner, or (for a handful of documentation/naming dimensions) an LLM labelled sampled · advisory — not a narrative.
Does re-running give the same result? Run it again on the same commit and the score — and this report, byte for byte — is identical. A report whose numbers move between runs is describing the run, not the code.

This report answers yes to all three. That's the bar to hold any assessment to.

Tools & methods

The actual versions used this run (captured at analysis time) — re-run on the same commit for the identical score.

Method	Backs	Version	Evaluator
Roslyn static analysis	Complexity, cohesion, coupling, dead code, API surface, layering	5.3.0	✓ deterministic
Native secret scanner	Hardcoded secrets / credentials	1.0.0	✓ deterministic
jscpd	Code duplication	—	✓ deterministic
Coverage (coverlet / dotnet-coverage)	Line & branch coverage	10.0.302	✓ deterministic
NuGet / dotnet	Outdated, vulnerable & deprecated dependencies	10.0.302	✓ deterministic
git / LibGit2Sharp	Churn hotspots, knowledge concentration, history	2.43.0 · 0.31.0	✓ deterministic
gitleaks · semgrep · trivy	Secrets in history, SAST, CVEs, IaC & container, PII / GDPR	1.86.0 · 0.69.3	✓ deterministic
LLM (sampled · advisory)	Documentation quality, ADR conformance, naming — sampled over a bounded sample; advisory, never a deterministic measurement	Local LLM	◐ LLM · sampled · advisory

Every finding is locatable in findings.md. Run 019fd554-8bf1-791d-acd0-6634937cce0b.

The exact command behind every deep-scan dimension — tool, version, invocation and retained raw output — is in Appendix B — Reproduction & audit trail.

Run transparency — what happened this run

A clean run — every tool resolved and ran, and every applicable dimension was measured at full confidence. No scanner was unavailable, no analysis timed out or crashed, and nothing fell back to a degraded estimate.

When something does degrade — a missing scanner, a shallow clone, an LLM hiccup — it is named here explicitly and its exact cause recorded in diagnostics.md, never absorbed silently into the score.

Repo exclusion declarations (.gitattributes linguist-generated/vendored, .editorconfig generated_code): none declared — every source file was scored.

Limitations & what we did not check

Watchdog assesses the repository exactly as committed, and only the repository. By design it does not reach outside the source tree: the live cloud account, the running CI/CD pipeline, the host's branch-protection and approval rules, the production configuration, or a restore actually exercised against a backup are all out of scope. That boundary is a feature, not a gap — a repo-relative, deterministic scan re-runs identically on any commit and every finding opens at a real file and line, where a live audit can neither be reproduced nor traced. The visible consequence is that controls which leave no in-repo evidence are reported as "not evidenced" and excluded from the score rather than awarded a number a static scan cannot justify.

Per-dimension blind spots

For each dimension that was measured, what a static, repo-only scan structurally cannot see — the honest edge of the measurement, not a failure of it.

D1 Cyclomatic Complexity: Cyclomatic complexity counts branches statically — it cannot tell an essential decision tree from accidental tangle, nor see complexity that lives in data or configuration (large switch-case token tables, DSL lexers/parsers, data-as-code rule tables) rather than control flow: a tokenizer's many single-character cases read as high complexity though each branch is trivial.
D2 Cognitive Complexity: Cognitive-complexity heuristics approximate how hard code is to follow; genuine domain difficulty and well-named intent that eases reading are not captured.
D3 God Classes: "God class" is sized by members and responsibilities visible in the type — a deliberately broad facade over a coherent subsystem can read the same as an accidental grab-bag. For front-end JS the file-length check is cohesion-aware (a single-responsibility module — one class/IIFE — earns a 3× threshold), but cohesion is approximated from top-level declarations, not true dependency structure.
D4 Code Duplication: Duplication is token-similarity (jscpd) — it finds copy-paste, not semantic duplication expressed differently. Committed machine-written code (scaffolded migrations, designer/codegen output, protobuf/OpenAPI stubs, model snapshots) is EXCLUDED — its repetition is the tool's, not the team's — so the score reflects hand-written duplication only.
D12 Dependency Hygiene: Dependency health reads manifests and lockfiles — a vulnerability in a vendored/copied dependency, or risk from how a dependency is actually used, is outside this view.
D13 Secret Scanning: Secret detection is signature- and entropy-based on the current tree — a secret that does not match a known pattern, or one already rotated, will not be flagged (a clean scan is "nothing matched", not "no secrets exist").
D15 Churn × Complexity Hotspots: Churn hotspots come from git history — a freshly imported or squashed repository has no churn signal, and recent rewrites can mask a historically risky file.
D16 Bus Factor: Bus-factor is a time-decayed model of commit attribution (who has recently, repeatedly worked a file), not comprehension — pairing, review and reading-without-committing spread knowledge it can't see; bot commits and shared accounts still distort it.
D19 Documentation Quality: Documentation quality is judged by an LLM over a bounded sample of docs — it reads what is written, not whether the docs match the running system, and it is advisory, not a measurement.
D21 Naming Consistency: Naming quality is an LLM judgement over a bounded sample — it assesses clarity/consistency of the names it sees, not domain-correctness, and is advisory.
D28 Secrets (history): Secret-history scanning sweeps the git log for known patterns — a secret that predates the available history, or never matched a signature, is not found (clean means "nothing matched in the history we can see").
D29 Static Analysis (SAST): SAST findings are pattern-based (semgrep) — it finds classes of bug it has rules for; logic flaws, auth/authorization gaps and issues needing runtime context are out of reach (and clean means "no rule matched").
D34 Knowledge Freshness: Freshness is decayed commit RECENCY, not comprehension — code read often but rarely committed reads as orphaned, and stable code that genuinely needs no changes is penalised the same as forgotten code; bot/squash commits distort it like the bus factor.
D35 Change Coupling: Change coupling is co-change in COMMITS — files split across separate commits, or coupled only through a shared config/build step, read as uncoupled, and a sweeping commit (rename/format) is excluded so it doesn't couple everything. It shows that files change together, not WHY: a high coupling can be a healthy cohesive pair as readily as a hidden leak.
M4 Documentation accuracy: Onboarding quality is an LLM read of the docs/setup present — it cannot run the onboarding or measure how long a real new joiner takes; the verdict is sampled and advisory.
P4 Deployment & Rollback: Approval/branch-protection rules live in repository settings the scan cannot see — only their in-repo evidence (config files, workflows) is checked, so a control enforced purely in the host's settings reads as "not evidenced".
P6 Release Hygiene: Rollback/observability controls are inferred from repo artefacts (pipelines, dashboards-as-code) — controls configured in external tooling, with no in-repo trace, cannot be credited.

The LLM boundary

LLM-set scores this run (3): D19, D21, M4 (model: Local LLM). For these, a model reads a bounded sample and sets the numeric score (documentation, ADR quality, naming, comment value, onboarding) — D25 sets the ADR-conformance fraction over sampled code, D22 judges API accuracy over a sample. These are sampled and advisory by design: they vary at the margins between runs and are never a deterministic measurement. Every other score in this report is tool-computed at confidence 1.0.

Dimensions

D1 · Cyclomatic Complexity8.9 / 10Strong✓ Tool-verified

What it measures: How tangled the control flow is — methods with many branches are hard to test and change.

Method: Cyclomatic complexity per method (1 + decision points), computed exhaustively across production source; test projects separated by convention. Deterministic.

Maturity: Documented → Verified → Prevented · effective 8.9 / 10 · rule-coverage 100% · ceiling Prevented

6 method(s) exceeded the cyclomatic complexity threshold of 15; the worst was Sync.run at 27. A further 1 method(s) were over the threshold but excluded as flat dispatchers (a long switch/match over independent cases: many branches, almost no nesting), the largest being Parameters.Argu.IArgParserTemplate.get_Usage at 20 — they are counted neither in the figure above nor in this dimension's score.

Sync.run (cyclomatic 27)tools/Propulsion.Tool/Sync.fs:219

FeedMonitor.AwaitCompletion (cyclomatic 23)src/Propulsion/Feed/FeedMonitor.fs:111

Impl.materializeIndexEpochAsBatchesOfStreamEvents (cyclomatic 20)src/Propulsion.DynamoStore/DynamoStoreSource.fs:43

ChangeFeedProcessor.Start (cyclomatic 19)src/Propulsion.CosmosStore/ChangeFeedProcessor.fs:8

Handler.parse (cyclomatic 18)src/Propulsion.DynamoStore.Indexer/Handler.fs:6

+ 1 more group(s) — more in Appendix A; the complete list is findings.md.

What to do

Resolve the 1 Sync.run (cyclomatic 27) finding(s) in Cyclomatic Complexity — start with Sync.fs. — One of this dimension's main actionable groups (1 warning-level).
Resolve the 1 FeedMonitor.AwaitCompletion (cyclomatic 23) finding(s) in Cyclomatic Complexity — start with FeedMonitor.fs. — One of this dimension's main actionable groups (1 warning-level).
Resolve the 1 Impl.materializeIndexEpochAsBatchesOfStreamEvents (cyclomatic 20) finding(s) in Cyclomatic Complexity — start with DynamoStoreSource.fs. — One of this dimension's main actionable groups (1 warning-level).
Enforce Cyclomatic Complexity in CI to reach Verified (currently Documented). — Hardens enforcement from Documented toward Prevented — provenance only; does not change the score.

Detailed fixes: d1_recommendation.md · top locations in Appendix A, every location in findings.md.

Do you agree with this assessment?

D2 · Cognitive Complexity7.7 / 10Strong✓ Tool-verified

What it measures: How hard the code is for a person to follow, beyond raw branching.

Method: Cognitive complexity per method (Sonar-style nesting-penalized score), computed exhaustively over production code, excluding test projects. Deterministic.

Maturity: Documented → Verified → Prevented · effective 7.7 / 10 · rule-coverage 100% · ceiling Prevented

14 method(s) exceeded the cognitive complexity threshold of 15; the worst was Handler.parse at 46.

Handler.parse (cognitive 46)src/Propulsion.DynamoStore.Indexer/Handler.fs:6

Handler.parse (cognitive 30)src/Propulsion.DynamoStore.Notifier/Handler.fs:13

FeedMonitor.AwaitCompletion (cognitive 28)src/Propulsion/Feed/FeedMonitor.fs:111

StreamQueue.insert (cognitive 28)src/Propulsion.DynamoStore/DynamoStoreIndex.fs:23

Impl.materializeIndexEpochAsBatchesOfStreamEvents (cognitive 25)src/Propulsion.DynamoStore/DynamoStoreSource.fs:43

+ 9 more group(s) — more in Appendix A; the complete list is findings.md.

What to do

Resolve the 1 Handler.parse (cognitive 46) finding(s) in Cognitive Complexity — start with Handler.fs. — One of this dimension's main actionable groups (1 warning-level).
Resolve the 1 Handler.parse (cognitive 30) finding(s) in Cognitive Complexity — start with Handler.fs. — One of this dimension's main actionable groups (1 warning-level).
Resolve the 1 FeedMonitor.AwaitCompletion (cognitive 28) finding(s) in Cognitive Complexity — start with FeedMonitor.fs. — One of this dimension's main actionable groups (1 warning-level).
Enforce Cognitive Complexity in CI to reach Verified (currently Documented). — Hardens enforcement from Documented toward Prevented — provenance only; does not change the score.

Detailed fixes: d2_recommendation.md · top locations in Appendix A, every location in findings.md.

Do you agree with this assessment?

D3 · God Classes9.5 / 10Exemplary✓ Tool-verified

What it measures: Over-large classes that try to do too much ("god classes").

Method: God-class detection by line and method-count thresholds per logical type (partial classes unified), filtered for generated code and registration/contract false positives. Deterministic.

Maturity: Documented → Verified → Prevented · effective 9.5 / 10 · rule-coverage 100% · ceiling Prevented

1 god class(es) detected.

FileTooLong: Propulsion/Streams.fssrc/Propulsion/Streams.fs:0

✓ On the Gold path — maintain.

Detailed fixes: d3_recommendation.md · top locations in Appendix A, every location in findings.md.

Do you agree with this assessment?

D4 · Code Duplication9.1 / 10Exemplary✓ Tool-verified

What it measures: Copy-pasted code that should be shared instead.

Method: Code duplication via token-stream sliding windows with type-aware normalization (locals masked, type names preserved), density-scored per KLoC of production code. Deterministic.

Maturity: Documented → Verified → Prevented · effective 9.1 / 10 · rule-coverage 100% · ceiling Verified

18 duplicated block group(s) detected.

Duplicated block (7 lines × 2) · ×5src/Propulsion.CosmosStore/CosmosStoreSink.fs:137

Duplicated block (5 lines × 2) · ×5src/Propulsion.CosmosStore/FeedObserver.fs:19

Duplicated block (6 lines × 2) · ×4src/Propulsion.CosmosStore/CosmosStoreSink.fs:44

Duplicated block (8 lines × 2) · ×2src/Propulsion.CosmosStore/PropulsionCosmosStorePrometheus.fs:39

Duplicated block (12 lines × 2)src/Propulsion.CosmosStore/PropulsionCosmosStorePrometheus.fs:49

+ 1 more group(s) — more in Appendix A; the complete list is findings.md.

✓ On the Gold path — maintain.

Detailed fixes: d4_recommendation.md · top locations in Appendix A, every location in findings.md.

Do you agree with this assessment?

D12 · Dependency Hygiene6.4 / 10Adequate✓ Tool-verified

What it measures: Whether dependencies are current, secure, and not bloated.

Method: Manifest scan via dotnet list package across all projects; worst-signal-per-package deduction (saturating for vulnerabilities, capped-linear for deprecation/outdated) per KLoC. Exhaustive, deterministic.

Maturity: Documented → Verified → Prevented · effective 6.4 / 10 · rule-coverage 100% · ceiling Verified

37 outdated, 1 vulnerable, 2 deprecated, 1 prerelease packages.

Vulnerable: Amazon.CDK.Lib

Deprecated: Microsoft.Data.SqlClient · ×2

Prerelease dependency: SqlStreamStore

Outdated: DotNet.ReproducibleBuilds · ×37

What to do

Resolve the 1 Vulnerable finding(s) in Dependency Hygiene. — One of this dimension's main actionable groups (1 issue-level).
Resolve the 2 Deprecated finding(s) in Dependency Hygiene. — One of this dimension's main actionable groups (2 warning-level).
Resolve the 1 Prerelease dependency finding(s) in Dependency Hygiene. — One of this dimension's main actionable groups (1 warning-level).
Enforce Dependency Hygiene in CI to reach Verified (currently Documented). — Hardens enforcement from Documented toward Verified — provenance only; does not change the score.

Detailed fixes: d12_recommendation.md · top locations in Appendix A, every location in findings.md.

Do you agree with this assessment?

D13 · Secret Scanning10.0 / 10Exemplary○ Nothing flagged

What it measures: Whether any secrets (keys, tokens, passwords) have leaked into the code.

Method: In-process native secret scanner (entropy plus signature patterns) across all tracked files; no external tool. A clean result is a measured 10, not no-data zero. Deterministic.

Maturity: Documented → Verified → Prevented · effective 10.0 / 10 · rule-coverage 100% · ceiling Prevented

Secret scan ran and found no leaked secrets.

✓ On the Gold path — maintain.

Detailed fixes: d13_recommendation.md.

Do you agree with this assessment?

D15 · Churn × Complexity Hotspots10.0 / 10Exemplary✓ Tool-verified

What it measures: Files that change often and are also complex — the riskiest hotspots.

Method: Per production file churn times cyclomatic complexity over a rolling window, computed from git and Roslyn/JS/Razor analysis. Exhaustive, deterministic per commit date.

Maturity: Documented → Verified → Prevented · effective 10.0 / 10 · rule-coverage 100% · ceiling Documented

No churn × complexity hotspots in the window.

✓ On the Gold path — maintain.

Detailed fixes: d15_recommendation.md.

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D16 · Bus Factor8.5 / 10Strong✓ Tool-verified

What it measures: Whether knowledge is concentrated in too few people (the "bus factor").

Method: Living knowledge per author via time-decayed commit attribution (6-month half-life, focus weighting) across largest source files. Deterministic, avoids blame's mechanical-refactor false positives.

Maturity: Documented → Verified → Prevented · effective 8.5 / 10 · rule-coverage 100% · ceiling Documented

9 source file(s) have their living knowledge concentrated in one author (≥90% of recent, decayed contribution). The largest is src/Propulsion/Streams.fs.

Off-boarding risk: anonymized user #1

Further sole-owners (lower concentration)

What to do

Resolve the 1 Off-boarding risk finding(s) in Bus Factor. — One of this dimension's main actionable groups (1 recommendation-level).
Resolve the 1 Further sole-owners (lower concentration) finding(s) in Bus Factor. — One of this dimension's main actionable groups (1 recommendation-level).

Detailed fixes: d16_recommendation.md · top locations in Appendix A, every location in findings.md.

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D19 · Documentation Quality / 10Strong◐ Sampled · advisory

What it measures: Whether the project's documentation is clear, complete, and useful.

Method: Judged by language model at low temperature (0.0-0.1) on a deterministic doc sample (READMEs plus first 25 architecture docs), with two-pass stability filtering. Advisory, sampled.

Maturity: Documented → Verified → Prevented · effective Strong / 10 · rule-coverage 100% · ceiling Documented

The propulsion project's documentation is clear and complete for a .NET event-processing suite. The README gives an overview of the granular package set (event-sourcing reactions, unit/integration testing support, ingestion/publishing pipelines, serverless event pipelines, strong metrics), links to build/release/nuget/license/Discord status, and a full outline that is then fleshed out in detail: Core Components, Store-specific components, `dotnet tool` provisioning/test tool, deprecated components, related repos, an Equinox Perspective section, a C4 context diagram, and a QuickStart example. The src/Propulsion.MessageDb README adds the project's MessageDb source with a concrete quickstart that is then cut by the scanner.

The overview mentions DynamoStore serverless support but does not link to the dedicated DynamoStore section or the Serverless pipeline subsection in the outline.README.md

The overview lists strong metrics support but does not mention or link to where Prometheus integration is documented.README.md

What to do

Resolve the 1 The overview mentions DynamoStore serverless support but does not link… finding(s) in Documentation Quality — start with README.md. — One of this dimension's main actionable groups (1 recommendation-level).
Resolve the 1 The overview lists strong metrics support but does not mention or link… finding(s) in Documentation Quality — start with README.md. — One of this dimension's main actionable groups (1 recommendation-level).

Detailed fixes: d19_recommendation.md · top locations in Appendix A, every location in findings.md.

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D21 · Naming Consistency / 10Exemplary◐ Sampled · advisory

What it measures: Whether names — types, methods, variables — are clear and consistent.

Method: Judged by language model at low temperature (0.0-0.1) on a deterministic random symbol sample (fixed size, not exhaustive), with disclosed confidence band. Advisory, sampled.

Maturity: Documented → Verified → Prevented · effective Exemplary / 10 · rule-coverage 100% · ceiling Verified

0 naming inconsistencies across 0 sampled symbols.

✓ On the Gold path — maintain.

Detailed fixes: d21_recommendation.md.

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D28 · Secrets (history)10.0 / 10Exemplary○ Nothing flagged

What it measures: Whether any secrets were ever committed — scanned across the full git history, not just now.

Method: Git-history secret scan via gitleaks detect over full history in an isolated checkout; each match flagged High. Exhaustive; degrades cleanly when tool absent.

Maturity: Documented → Verified → Prevented · effective 10.0 / 10 · rule-coverage 100% · ceiling Documented

gitleaks scanned the full history AND the current working tree and found no secrets.

✓ On the Gold path — maintain.

Detailed fixes: d28_recommendation.md.

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D29 · Static Analysis (SAST)7.1 / 10Strong✓ Tool-verified

What it measures: Real static-analysis (SAST) findings — likely security bugs in the code, any language.

Method: Polyglot static analysis via semgrep across the repo using the pinned, image-baked p/security-audit + p/owasp-top-ten rulesets (no scan-time registry fetch); severity rules (ERROR/WARNING/INFO) map to a full-band severity-weighted score. Exhaustive, deterministic; degrades on parse failure.

Coverage: semgrep pattern rules over all files — exhaustive for the rule set, blind to classes of bug without a rule (clean = no rule matched).

Maturity: Documented → Verified → Prevented · effective 7.1 / 10 · rule-coverage 100% · ceiling Documented

2 finding(s): 0 critical, 2 high, 0 medium, 0 low.

High: github-actions-mutable-action-tag · ×2.github/workflows/ci.yaml:26detected by semgrep finding

What to do

Resolve the 2 High finding(s) in Static Analysis (SAST) — start with ci.yaml (2). — One of this dimension's main actionable groups (2 issue-level).

Detailed fixes: d29_recommendation.md · top locations in Appendix A, every location in findings.md.

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D34 · Knowledge Freshness10.0 / 10Exemplary✓ Tool-verified

What it measures: Whether anyone still has living knowledge of each file, or it has been orphaned — last understood long ago by someone now gone quiet. The sibling of the bus factor: D16 asks who owns it, D34 asks whether anyone still knows it.

Method: File orphaning as total living-knowledge decay below one focused-commit's worth within a year, computed per-file from the D16 decay model. Exhaustive, deterministic over fixed history.

Maturity: Documented → Verified → Prevented · effective 10.0 / 10 · rule-coverage 100% · ceiling Documented

Every significant source file has living knowledge — recently and meaningfully worked.

✓ On the Gold path — maintain.

Detailed fixes: d34_recommendation.md.

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D35 · Change Coupling10.0 / 10Exemplary✓ Tool-verified

What it measures: Whether files that change together actually belong together — pairs that repeatedly co-change in git history despite having no explicit code dependency, surfacing the hidden/logical coupling (and boundaries in the wrong place) a static scan can't see.

Method: Pairwise co-occurrence over the per-commit file sets in git history (production source only — tests and generated dropped): Degree-of-Coupling = shared ÷ min individual revisions, reported above noise floors (each file ≥10 revisions, ≥5 shared commits, ≥50% strength); sweeping commits excluded. Deterministic over fixed history.

Coverage: Population: PRODUCTION source files only — test and generated files are dropped before pairing, so a class co-changing with its own test (trivially ~100%) can't drown the real production↔production coupling. Pairs ranked by Degree-of-Coupling; coupling through a build step, config, or non-source file isn't seen.

Maturity: Documented → Verified → Prevented · effective 10.0 / 10 · rule-coverage 100% · ceiling Documented

No strong hidden change-coupling between production files.

✓ On the Gold path — maintain.

Detailed fixes: d35_recommendation.md.

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D36 · Supply-chain Provenance & Signing0.0 / 10Critical✓ Tool-verified

What it measures: Whether the build pipeline provides supply-chain integrity — generated provenance/attestation, signed artifacts (cosign/sigstore), an SBOM, and pinned build actions. Presence of the configuration, not a runtime guarantee.

Method: Supply-chain provenance/signing read deterministically from CI/build config (.github/workflows, .gitlab-ci.yml, azure-pipelines, Jenkinsfile, .circleci) + the release surface: four signals — generated provenance/attestation (SLSA/in-toto/actions-attest), artifact signing (cosign/sigstore/gitsign), an SBOM (syft/sbom-action/*.spdx.json/*.cdx.json), and SHA-pinned build actions — scored 10·present/denom. NotApplicable without a build pipeline. Detects configuration presence, not runtime enforcement.

Maturity: Documented → Verified → Prevented · effective 0.0 / 10 · rule-coverage 100% · ceiling Documented

0/4 supply-chain integrity signals present (provenance, signing, SBOM, pinned actions).

Unpinned build actions

Workflow token permissions not restricted

No build provenance

No artifact signing

No SBOM

What to do

Resolve the 1 Unpinned build actions finding(s) in Supply-chain Provenance & Signing. — One of this dimension's main actionable groups (1 warning-level).
Resolve the 1 Workflow token permissions not restricted finding(s) in Supply-chain Provenance & Signing. — One of this dimension's main actionable groups (1 warning-level).
Resolve the 1 No build provenance finding(s) in Supply-chain Provenance & Signing. — One of this dimension's main actionable groups (1 recommendation-level).

Detailed fixes: d36_recommendation.md · top locations in Appendix A, every location in findings.md.

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D37 · Vulnerability-disclosure Policy10.0 / 10Exemplary✓ Tool-verified

What it measures: Whether the repository publishes a coordinated-vulnerability-disclosure policy (SECURITY.md or security.txt) with a reporting contact, so finders know how to report a vulnerability. Presence of a policy file with a contact, not whether the policy is adequate or honoured.

Method: Vulnerability-disclosure policy read deterministically from the repo: a SECURITY.md (root/.github/docs) or .well-known/security.txt / security.txt, regex-checked for a reporting contact (email / URL / mailto). Present + contact → 10; present without a contact → 4; NotApplicable when no policy file exists (it may live off-repo). Detects the policy file's presence + contact, not its adequacy.

Maturity: Documented → Verified → Prevented · effective 10.0 / 10 · rule-coverage 100% · ceiling Documented

A vulnerability-disclosure policy (SECURITY.md) is published with a reporting contact.

✓ On the Gold path — maintain.

Detailed fixes: d37_recommendation.md.

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Frontend & cross-cutting dimensions

R = React/JS · M = Maturity · P = Readiness.

DM1 · Aggregate boundaries10.0 / 10Exemplary✓ Tool-verified

Other · Domain Modelling — Whether aggregates reference each other by identity (id) rather than by direct object reference — the core DDD consistency-boundary rule.

Method: Roslyn (DDD-gated): aggregate roots identified by convention; each aggregate field checked for direct references to other aggregates versus id-only. Deterministic, DDD-native.

Coverage: Population: aggregate roots identified by AggregateRoot/IAggregateRoot base/interface NAME convention; reference-by-identity then checked exhaustively within that set — a root not using those names is invisible.

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DM5 · Encapsulated state10.0 / 10Exemplary✓ Tool-verified

Other · Domain Modelling — Whether entities protect their state (private/init-only setters) instead of exposing public setters that bypass invariants. Softened when a rehydration framework (Marten/EF) is present.

Method: Roslyn (DDD-gated): public setters on entities detected; score softened when Marten/EF rehydration frameworks present. Deterministic, framework-aware.

Coverage: Population: entities by convention; encapsulation (setter shape) checked exhaustively within the set.

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DM8 · Value-object opportunities10.0 / 10Exemplary✓ Tool-verified

Other · Domain Modelling — Whether clusters of primitives that travel together (a missing value object) are extracted — a low-weight suggestion, LLM-confirmed when configured.

Method: Roslyn (DDD-gated): primitive parameter clusters recurring three or more times across signatures extracted, then confirmed by language model when configured. Advisory, low-weight.

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M1 · Documentation (README)7.3 / 10Strong✓ Tool-verified

Maturity · Maturity — Whether the repo and its projects have a README, and whether it's substantive and current.

Method: Filesystem scan: README presence, word count, and headings for depth; git history for staleness. Exhaustive across root and project dirs, deterministic.

What to do

Add an 'Architecture' / 'How it works' section to the root README — the high-level shape.

Do you agree with this assessment?

M2 · Architecture documentation5.0 / 10Adequate✓ Tool-verified

Maturity · Maturity — Whether key decisions (ADRs) and the high-level shape (C4/diagrams) are written down.

Method: Filesystem scan: ADR folder/naming conventions or content, plus Mermaid/PlantUML/C4/architecture.md discovery. Exhaustive, deterministic.

No Architecture Decision Records found — no conventional ADR directory, no `NNNN-title.md` documents and nothing ADR-shaped by content. Design rationale recorded elsewhere (a design-notes tree, a mailing list, pull-request discussion) is not visible to this check and is not re-findable per decision, so a future maintainer cannot ask why one choice was made and get an answer.

What to do

Record significant decisions one document per decision — dated, stating the context, the decision and its consequences — and keep them together wherever your design docs already live (a conventional `docs/adr/` tree with `NNNN-title.md` names is the most discoverable form).

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M3 · Folder & project structure10.0 / 10Exemplary✓ Tool-verified

Maturity · Maturity — Whether the repo is organised deliberately — src/test separation and consistent project naming.

Method: Filesystem scan: src/test folder separation and namespace-prefix consistency (majority RootNamespace agreement). Exhaustive across projects, deterministic.

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M4 · Documentation accuracy6.0 / 10Adequate◐ Sampled · advisory

Maturity · Maturity — Whether the README actually describes the code that exists (LLM-judged, advisory).

Method: Judged by language model at low temperature: README accuracy versus actual projects, within a disclosed tolerance. Advisory, not a measured number.

README advertises Docker containerisation, but no Dockerfile/compose file exists
README advertises a RAG / ML engine, but no ML/RAG code or dependency exists

What to do

Reconcile the README with reality: README advertises Docker containerisation, but no Dockerfile/compose file exists; README advertises a RAG / ML engine, but no ML/RAG code or dependency exists.

Do you agree with this assessment?

P1 · CI/CD gates10.0 / 10Exemplary○ Nothing flagged

Readiness · Readiness — Whether an automated pipeline builds and tests every change.

Method: Filesystem scan: CI workflow files (.github/workflows, .gitlab-ci.yml, etc.) for build and test stages. Exhaustive, deterministic.

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P3 · Security & performance tooling0.0 / 10Critical✓ Tool-verified

Readiness · Readiness — Whether SAST, secret/dependency scanning and performance benchmarking are wired in (presence, not runtime).

Method: Filesystem scan: SAST configuration, dependency-update automation, secret scanning, and a benchmark harness or benchmark step — in this repository's own ecosystem. Exhaustive, deterministic.

No static application security testing detected. For this repository's stack, add `semgrep --config=auto` plus gitleaks for committed secrets (F# is not a CodeQL language and has no language-specific SAST engine) as a CI step.

What to do

Add a SAST step to CI running what this repository's stack ships: `semgrep --config=auto` plus gitleaks for committed secrets (F# is not a CodeQL language and has no language-specific SAST engine) — so a security regression fails the build instead of landing.
Enable Dependabot/Renovate or a dependency-review gate.
Add gitleaks/trufflehog in CI to block PRs that introduce committed secrets.

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P4 · Deployment & Rollback5.0 / 10Adequate✓ Tool-verified

Readiness · Readiness — Whether releases are automated and safely reversible (probes, rolling updates, approval gates) — from manifests/pipeline files, not the live environment.

Method: Filesystem scan: deployment manifests/IaC (K8s YAML, Helm, Terraform) for rolling updates, probes, approval gates, migration hooks. Exhaustive, deterministic.

What to do

Nothing pauses a release for a human: publish as a draft release (or gate the release job on a protected tag/manual dispatch) so a bad build can be stopped before users can download it.

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P6 · Release Hygiene10.0 / 10Exemplary✓ Tool-verified

Readiness · Readiness — Whether releases are traceable — a maintained changelog and explicit version stamping.

Method: Filesystem scan: changelog file presence and version tags in csproj or git tags. Exhaustive, deterministic.

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Reference — by lens

The score is the rank-weighted fold of these lenses (worst-heaviest), each including its meta-dimensions; a lens with a Critical contributor is capped at Fair (its band reads "gated by …") and is never the strongest area however high its average.

Lens	Score	Rating	Impact
Code Health	88%	Strong	Solid.
Architecture	100%	Exemplary	Strongest area.
Maturity	68%	Adequate	Acceptable, with room to improve.
Readiness	52%	Adequate — gated by P3	Capped at Fair by a Critical contributor — resolve it before relying on this lens.
Security	68%	Adequate — gated by D36	Capped at Fair by a Critical contributor — resolve it before relying on this lens.
Domain Modelling	100%	Exemplary	Solid.

Not included — 75 check(s) not relevant to this codebase

These checks had nothing to measure here (no tests, no git history, the codebase is small, or the architecture style doesn't apply), so they're omitted above rather than scored low.

AC1 Text alternatives — No web markup found — accessibility is not applicable to this repository.
AC2 Forms & labels — No web markup found — accessibility is not applicable to this repository.
AC3 Page structure — No web markup found — accessibility is not applicable to this repository.
AC4 Keyboard semantics — No web markup found — accessibility is not applicable to this repository.
AC5 ARIA correctness — No web markup found — accessibility is not applicable to this repository.
AC6 Visual & motion safety — No web markup found — accessibility is not applicable to this repository.
AC7 A11y enforcement — No web markup found — accessibility is not applicable to this repository.
AX1 Captive dependencies — no DI registrations detected
AX10 Code composition — not assessed — code composition is computed by ROLE over a document set that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
AX2 Stateful singletons — no singleton implementations detected
AX3 Project dependency cycles — not assessed — project cycles and dependency direction are computed over a project-reference graph that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
AX4 Dependency direction — not assessed — project cycles and dependency direction are computed over a project-reference graph that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
AX5 Architecture & structure — not assessed — architecture style/structure is computed from a project graph (projects, types, module namespaces) that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
AX6 Interface segregation — not assessed — interface segregation is computed over a type surface that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
AX7 Slice cohesion — not applicable — not a vertical-slice architecture
AX8 Test isolation — not assessed — test isolation is computed from a project graph (which projects are test projects, and what they reference) that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
AX9 CQS / query purity — no CQRS query handlers detected — query purity is not applicable to this codebase
AXB2 Runtime readiness — Advisory — this card reports evidence and never carries a score, so there is nothing missing here.
C1 Data Protection — Not assessed: these personal data controls are read from a source model (declarative annotations, request middleware, entity/column names, guard methods) that was not loaded for this repository — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of an idiom this check recognises is NOT evidence that this repository lacks personal data controls: it may implement them entirely in its own ecosystem. This is a gap in the analyzer's language coverage, not a finding about this repository.
C2 Access Controls — Not assessed: these authorization controls are read from a source model (declarative annotations, request middleware, entity/column names, guard methods) that was not loaded for this repository — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of an idiom this check recognises is NOT evidence that this repository lacks authorization controls: it may implement them entirely in its own ecosystem. This is a gap in the analyzer's language coverage, not a finding about this repository.
C3 Audit Trail — Not assessed: these audit controls are read from a source model (declarative annotations, request middleware, entity/column names, guard methods) that was not loaded for this repository — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of an idiom this check recognises is NOT evidence that this repository lacks audit controls: it may implement them entirely in its own ecosystem. This is a gap in the analyzer's language coverage, not a finding about this repository.
C4 Data Retention — Not assessed: these retention controls are read from a source model (declarative annotations, request middleware, entity/column names, guard methods) that was not loaded for this repository — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of an idiom this check recognises is NOT evidence that this repository lacks retention controls: it may implement them entirely in its own ecosystem. This is a gap in the analyzer's language coverage, not a finding about this repository.
C5 Data-Subject Rights — Not assessed: these data-subject rights controls are read from a source model (declarative annotations, request middleware, entity/column names, guard methods) that was not loaded for this repository — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of an idiom this check recognises is NOT evidence that this repository lacks data-subject rights controls: it may implement them entirely in its own ecosystem. This is a gap in the analyzer's language coverage, not a finding about this repository.
D10 Test Quality — ~1174 lines of test source are present (.fs) but the test-quality collector reads C# only, so skipped/assertion-free tests couldn't be counted. Not scored — this is a gap in the analyzer, not a finding about this repository.
D11 Test Reliability — Test reliability not included
D14 License Compliance — Not scored — this repository's projects are MSBuild/NuGet projects, whose package licenses are exactly what this dimension reads, but no license could be resolved for them (the .NET license collector did not run, or restore failed). A gap in the analysis run, NOT a finding that the repository's licenses are compliant.
D17 Explicit Debt — the C# workspace loaded 0 projects, so explicit-debt density could not be measured
D18 Solution Shape — D18 scores the shape of a C#/VB .NET solution; this repository's .NET projects are all F# (.fsproj), which the C#/VB workspace does not load, so the dimension does not apply.
D20 ADR Quality — N/A — ADRs are expected on deployable products with a user-facing host, not consumed libraries; no ADR log is required here.
D22 Internal API Consistency — No exposed public API
D23 Boundary Type-Coupling — Production source is present (.fs) but bounded contexts are resolved over the C#/VB project set, which exposed none, so context scope could not be assessed. Not scored — this is a gap in the analyzer, not a verdict about this repository. Declaring the codebase's bounded contexts (≥2) would let cross-boundary type coupling be assessed — see the recommendation on this dimension for where. Declare them in `.codehealth/config.yaml` at the repository root (create it if absent), mapping each context name to the module-path or namespace prefixes that belong to it — e.g. `architecture:` → `contexts:` → `Billing: ["src/billing", "Acme.Billing"]`, `Catalog: ["src/catalog", "Acme.Catalog"]`.
D24 Comment Value — No inline comments to assess — comment value is not applicable here.
D25 ADR Conformance — no ADRs to check
D26 Project Cohesion — Project cohesion is assessed over the .NET project set; this target exposed no projects, so project size and spread could not be assessed. Not scored — this is a gap in the analyzer's reach, not a verdict about this repository.
D27 Navigability — No calls could be sampled, so navigability was not assessed — tracing effort is measured over resolved call sites and this target exposed none. Not scored — this is a gap in the analyzer's reach, not a verdict about this repository.
D30 Dependency Vulnerabilities — the solution did not restore on the analyzer's .NET SDK (an SDK/target-framework/restore mismatch, common for an older codebase), so there was no restored dependency graph to scan for NuGet CVEs — excluded rather than scored; re-run on an SDK that can restore this solution
D31 IaC & Container Security — No Infrastructure-as-Code or container manifests found (Dockerfile, Terraform, Kubernetes/Helm, CloudFormation); nothing to scan.
D32 Data Compliance (PII/GDPR) — No PII/GDPR-handling patterns detected (p/gdpr ruleset) — no data-compliance surface to assess.
D33 JS/npm Dependency Vulnerabilities — No JS/npm manifest or lockfile found outside build output (package.json, package-lock.json, yarn.lock, pnpm-lock.yaml, bun.lockb); no JS dependencies to scan.
D38 OSV Dependency Vulnerabilities — No supported non-.NET dependency lockfile found outside build output (npm package-lock/yarn/pnpm/bun, Go go.mod, Rust Cargo.lock, Maven pom.xml, Gradle lockfiles, Python requirements.txt/poetry.lock/Pipfile.lock/pdm.lock, PHP composer.lock, Ruby Gemfile.lock, Elixir mix.lock, Dart pubspec.lock, Swift Package.resolved); nothing for OSV to scan. A NuGet-only repo stays NotApplicable — .NET CVEs are D30's domain.
D39 IL Efficiency — The target did not build, so no IL was available to measure.
D40 Network Egress Confinement — No Kubernetes/orchestration workloads found in the repository manifests; network egress policy is a cluster-native control that may live at the platform/firewall layer, so there is nothing to assess here.
D41 Kernel & Syscall Confinement — No Kubernetes/orchestration workloads found in the repository manifests; seccomp/AppArmor/SELinux confinement is a workload-level control, so there is nothing to assess here.
D42 Runtime Threat Enforcement — No Kubernetes/orchestration workloads found in the repository manifests; runtime threat-detection and admission-control policy are cluster-level controls, so there is nothing to assess here.
D5 Coupling — Inter-project coupling could not be assessed — no analyzable project graph was found for this repository. Not scored: a gap in the analyzer's reach, not a verdict about this repository. (Coupling here is Martin afferent/efferent/instability plus reference cycles across a project-reference graph, read today from .NET project files; other ecosystems' module graphs are not read yet.)
D6 Cohesion (LCOM4) — Cohesion (LCOM4) is measured over a C#/VB class graph, and this repository's production source is .fs, which this pass does not read — so no class could be assessed. Not scored — this is a gap in the analyzer, not a finding about this repository.
D7 Architectural Integrity — no checkable ADRs, and no project-reference graph for the cycle pass to read — so this dimension makes no claim about dependency cycles in either direction (where this repository's language has an import-cycle lens, cycles are reported there). Architectural integrity not assessed
D8 Code Coverage — Coverage not measured — test suite did not build
D9 Test Distribution — Test source is present (.fs) but the test-pyramid classifier reads C# only, so its unit/integration/BDD/E2E split couldn't be counted. Not scored — this is a gap in the analyzer, not a finding about this repository.
DM2 Strongly-typed ids — no id-bearing domain types detected — strongly-typed-id adoption not assessable
DM3 Integration-event coupling — no integration events detected — coupling check not applicable
DM4 Rich vs anemic model — no data-bearing entities detected — rich-vs-anemic model not assessable
DM6 Domain ↔ infrastructure boundary — no domain-layer types detected — domain↔infrastructure boundary check not applicable
DM7 Repository granularity — no repository abstraction detected (e.g. uses a document session)
ED1 Event-Driven — not scored — this repository shows none of the 3 signals this check looks for
ED5 Idempotency — no mutating command handlers or message consumers detected — idempotency check not applicable
ES1 Event Sourcing — not scored — this repository shows only 1 of the 3 signals this check looks for (2 aggregate(s) with Apply/When folds)
GD1 Unfinished & placeholder code — no source files
IC1 Incompleteness & stubs — not analysed — these correctness checks read a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
P12 CI test-gate honesty — Reported, not scored — and nothing was matched here. The coverage check applies to any stack, but the checks for excluded tests, skipped tests and sleep-based synchronisation currently recognise only some ecosystems' test-runner idioms, so on a repository built with another stack the zeros below mean 'not checked', not 'clean'.
P2 Observability — Observability was not assessed: this check reads a source model that does not carry this repository's product — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of a logging idiom this check recognises is NOT evidence that this repo lacks structured logging (it may log through its own ecosystem's logger). This is a gap in the analyzer, not a finding about this repository.
P5 DR & Backup — not evidenced — repo shows no backup/RTO/RPO controls; absence of evidence is not evidence of a working control
P7 Outbound HTTP resilience — not measured — the application kind could not be determined for this repo
P8 Schema migrations — not assessed — schema-migration practice is read from a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
P9 Domain vs controller coverage — no coverage report found on disk — produce a coverage report in a standard format (Cobertura — `dotnet test --collect:"XPlat Code Coverage"` with a `coverlet.collector` PackageReference) into the repo working tree before the scan — a CI step is the usual place, since the artefact is commonly gitignored, or wire coverage collection into CI, to enable this cross-layer check
PF1 Benchmark discipline — Performance was not assessed: this lens reads a source model that was not loaded for this repository, because the repository is written in a language this lens does not yet model or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository — in particular it is NOT a statement that this repo is unpackaged or performance-careless.
PF2 Allocation hygiene — Performance was not assessed: this lens reads a source model that was not loaded for this repository, because the repository is written in a language this lens does not yet model or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository — in particular it is NOT a statement that this repo is unpackaged or performance-careless.
PF3 Async & latency hygiene — Performance was not assessed: this lens reads a source model that was not loaded for this repository, because the repository is written in a language this lens does not yet model or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository — in particular it is NOT a statement that this repo is unpackaged or performance-careless.
S1 Web-Security Posture — Not assessed: these web-security controls are read from a source model (declarative annotations, request middleware, entity/column names, guard methods) that was not loaded for this repository — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of an idiom this check recognises is NOT evidence that this repository lacks web-security controls: it may implement them entirely in its own ecosystem. This is a gap in the analyzer's language coverage, not a finding about this repository.
SC1 Supply-chain hygiene — Advisory — this card reports evidence and never carries a score, so there is nothing missing here.
X1 Async correctness — not analysed — these correctness checks read a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
X2 Cancellation propagation — not analysed — these correctness checks read a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
X3 Exception handling — not analysed — these correctness checks read a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
X4 Structured logging — not analysed — these correctness checks read a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
X5 Nullable reference types — not analysed — these correctness checks read a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository

Appendix A — Findings (grouped)

The findings behind the scores, grouped by severity, then by dimension and kind. The high-severity issues are enumerated in full below; items per group are capped at 25 with any overflow stated explicitly per group, never silently truncated. The complete machine-readable list of every finding (all severities) is the companion findings.md in this report's bundle.

Issue — 3 finding(s)

D29 · Static Analysis (SAST) · High · ×2

High: github-actions-mutable-action-tag .github/workflows/ci.yaml:26 — GitHub Actions step uses a mutable tag or branch reference. Tags and branch names can be silently repointed by the action owner, enabling supply-chain attacks — as seen in the trivy-action and kics-github-action compromises. Pin the reference to a full 40-character commit SHA instead, e.g. `uses: actions/checkout@<40-character SHA>`. This step references `actions/checkout@v4`; resolve the SHA it points at today with `gh api repos/actions/checkout/commits/v4 --jq .sha`.
High: github-actions-mutable-action-tag .github/workflows/ci.yaml:42 — GitHub Actions step uses a mutable tag or branch reference. Tags and branch names can be silently repointed by the action owner, enabling supply-chain attacks — as seen in the trivy-action and kics-github-action compromises. Pin the reference to a full 40-character commit SHA instead, e.g. `uses: actions/setup-dotnet@<40-character SHA>`. This step references `actions/setup-dotnet@v4`; resolve the SHA it points at today with `gh api repos/actions/setup-dotnet/commits/v4 --jq .sha`.

D12 · Dependency Hygiene · Vulnerable · ×1

Vulnerable: Amazon.CDK.Lib — Amazon.CDK.Lib 2.26.0 — Low severity. https://github.com/advisories/[GHSA redacted]

Warning — 45 finding(s)

D4 · Code Duplication · Duplicated block (7 lines × 2) · ×5

Duplicated block (7 lines × 2) src/Propulsion.CosmosStore/CosmosStoreSink.fs:137 — src/Propulsion.CosmosStore/CosmosStoreSink.fs:137-143 | src/Propulsion.EventStore/EventStoreSink.fs:95-101 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (7 lines × 2) src/Propulsion.CosmosStore/CosmosStoreSink.fs:171 — src/Propulsion.CosmosStore/CosmosStoreSink.fs:171-177 | src/Propulsion.EventStore/EventStoreSink.fs:121-127 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (7 lines × 2) src/Propulsion/Pipeline.fs:53 — src/Propulsion/Pipeline.fs:53-59 | src/Propulsion/Pipeline.fs:89-95 — both copies are in the same file, so extract the block into one function there and call it from each site — the copies drift apart the first time only one of them is edited. Note that the copies do not run to the end of the range shown: their LAST lines are different code, not the same code under different names — the matched region ends inside that line. Extract the lines above it, and read the last line of each site separately.
Duplicated block (7 lines × 2) src/Propulsion.DynamoStore.Constructs/DynamoStoreIndexerLambda.fs:41 — src/Propulsion.DynamoStore.Constructs/DynamoStoreIndexerLambda.fs:41-47 | src/Propulsion.DynamoStore.Constructs/DynamoStoreReactorLambda.fs:68-76 — the copies sit in sibling files of one directory: extract the block into a single shared function in that directory and call it from each site, so a change lands once.
Duplicated block (7 lines × 2) src/Propulsion.DynamoStore/DynamoStoreSource.fs:188 — src/Propulsion.DynamoStore/DynamoStoreSource.fs:188-194 | src/Propulsion.MessageDb/MessageDbSource.fs:115-121 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice. Read the line range as the matched WINDOW rather than a finished unit: at `src/Propulsion.DynamoStore/DynamoStoreSource.fs:188` it begins part-way through the construct above it, so those exact lines cannot be lifted as they stand — widen the region to the smallest complete statement or declaration that contains it, and extract that.

D4 · Code Duplication · Duplicated block (5 lines × 2) · ×5

Duplicated block (5 lines × 2) src/Propulsion.CosmosStore/FeedObserver.fs:19 — src/Propulsion.CosmosStore/FeedObserver.fs:19-23 | src/Propulsion/Feed/FeedReader.fs:23-27 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice. The matched lines also transfer control out of the body holding them, which cannot survive a move into a called unit unchanged: have the extracted unit return that decision and let each site act on it.
Duplicated block (5 lines × 2) src/Propulsion/Streams.fs:1196 — src/Propulsion/Streams.fs:1196-1200 | src/Propulsion/Streams.fs:1259-1263 — both copies are in the same file, so extract the block into one function there and call it from each site — the copies drift apart the first time only one of them is edited. Read the line range as the matched WINDOW rather than a finished unit: at `src/Propulsion/Streams.fs:1196` it does not close everything it opens, so those exact lines cannot be lifted as they stand — widen the region to the smallest complete statement or declaration that contains it, and extract that.
Duplicated block (5 lines × 2) src/Propulsion.DynamoStore.Indexer/Handler.fs:8 — src/Propulsion.DynamoStore.Indexer/Handler.fs:8-12 | src/Propulsion.DynamoStore.Notifier/Handler.fs:20-24 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (5 lines × 2) src/Propulsion.DynamoStore.Indexer/Handler.fs:16 — src/Propulsion.DynamoStore.Indexer/Handler.fs:16-20 | src/Propulsion.DynamoStore.Notifier/Handler.fs:27-33 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (5 lines × 2) src/Propulsion.Kafka/Consumers.fs:195 — src/Propulsion.Kafka/Consumers.fs:195-199 | src/Propulsion.Kafka/Consumers.fs:371-375 — both copies are in the same file, so extract the block into one function there and call it from each site — the copies drift apart the first time only one of them is edited.

D4 · Code Duplication · Duplicated block (6 lines × 2) · ×4

Duplicated block (6 lines × 2) src/Propulsion.CosmosStore/CosmosStoreSink.fs:44 — src/Propulsion.CosmosStore/CosmosStoreSink.fs:44-49 | src/Propulsion.EventStore/EventStoreSink.fs:22-27 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (6 lines × 2) src/Propulsion.CosmosStore/ReaderCheckpoint.fs:58 — src/Propulsion.CosmosStore/ReaderCheckpoint.fs:58-63 | src/Propulsion.EventStore/Checkpoint.fs:42-47 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (6 lines × 2) src/Propulsion.CosmosStore/ReaderCheckpoint.fs:113 — src/Propulsion.CosmosStore/ReaderCheckpoint.fs:113-118 | src/Propulsion.EventStore/Checkpoint.fs:85-90 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (6 lines × 2) src/Propulsion/Streams.fs:1254 — src/Propulsion/Streams.fs:1254-1259 | src/Propulsion.Kafka/Consumers.fs:360-365 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice. Read the line range as the matched WINDOW rather than a finished unit: at `src/Propulsion/Streams.fs:1254` it begins part-way through the construct above it, so those exact lines cannot be lifted as they stand — widen the region to the smallest complete statement or declaration that contains it, and extract that. Note that the copies do not run to the end of the range shown: their LAST lines are different code, not the same code under different names — the matched region ends inside that line. Extract the lines above it, and read the last line of each site separately.

D12 · Dependency Hygiene · Deprecated · ×2

Deprecated: Microsoft.Data.SqlClient — Microsoft.Data.SqlClient 2.1.7 — Other
Deprecated: SqlStreamStore — SqlStreamStore 1.2.0-beta.8 — Legacy

D4 · Code Duplication · Duplicated block (8 lines × 2) · ×2

Duplicated block (8 lines × 2) src/Propulsion.CosmosStore/PropulsionCosmosStorePrometheus.fs:39 — src/Propulsion.CosmosStore/PropulsionCosmosStorePrometheus.fs:39-46 | src/Propulsion.Prometheus/PropulsionPrometheus.fs:42-49 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice.
Duplicated block (8 lines × 2) src/Propulsion.DynamoStore.Indexer/Function.fs:7 — src/Propulsion.DynamoStore.Indexer/Function.fs:7-14 | src/Propulsion.DynamoStore.Notifier/Function.fs:5-12 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice. Note that the copies do not run to the end of the range shown: their LAST lines are different code, not the same code under different names — the matched region ends inside that line. Extract the lines above it, and read the last line of each site separately.

D1 · Cyclomatic Complexity · Sync.run (cyclomatic 27) · ×1

Sync.run (cyclomatic 27) tools/Propulsion.Tool/Sync.fs:219 — Sync.run has cyclomatic complexity 27 (threshold 15). To reduce it, keep the dispatch but shrink the arms: move each non-trivial case body into its own named function (or onto the value being matched) so the dispatch reads one line per case, and group related cases into a sub-dispatch. Where every arm is uniform — the same kind of value, with no behaviour of its own — a table keyed by the case is the shorter form; wherever the arms carry different data or different behaviour, keep them as cases, because collapsing those trades an explicit, reviewable set of cases for nothing.

D1 · Cyclomatic Complexity · FeedMonitor.AwaitCompletion (cyclomatic 23) · ×1

FeedMonitor.AwaitCompletion (cyclomatic 23) src/Propulsion/Feed/FeedMonitor.fs:111 — FeedMonitor.AwaitCompletion has cyclomatic complexity 23 (threshold 15). To reduce it, keep the dispatch but shrink the arms: move each non-trivial case body into its own named function (or onto the value being matched) so the dispatch reads one line per case, and group related cases into a sub-dispatch. Where every arm is uniform — the same kind of value, with no behaviour of its own — a table keyed by the case is the shorter form; wherever the arms carry different data or different behaviour, keep them as cases, because collapsing those trades an explicit, reviewable set of cases for nothing.

D1 · Cyclomatic Complexity · Impl.materializeIndexEpochAsBatchesOfStreamEvents (cyclomatic 20) · ×1

Impl.materializeIndexEpochAsBatchesOfStreamEvents (cyclomatic 20) src/Propulsion.DynamoStore/DynamoStoreSource.fs:43 — Impl.materializeIndexEpochAsBatchesOfStreamEvents has cyclomatic complexity 20 (threshold 15). To reduce it, separate the branches: extract each independent case into its own named function so the top-level body reads as a short sequence of named decisions.

D1 · Cyclomatic Complexity · ChangeFeedProcessor.Start (cyclomatic 19) · ×1

ChangeFeedProcessor.Start (cyclomatic 19) src/Propulsion.CosmosStore/ChangeFeedProcessor.fs:8 — ChangeFeedProcessor.Start has cyclomatic complexity 19 (threshold 15). To reduce it, keep the dispatch but shrink the arms: move each non-trivial case body into its own named function (or onto the value being matched) so the dispatch reads one line per case, and group related cases into a sub-dispatch. Where every arm is uniform — the same kind of value, with no behaviour of its own — a table keyed by the case is the shorter form; wherever the arms carry different data or different behaviour, keep them as cases, because collapsing those trades an explicit, reviewable set of cases for nothing.

D1 · Cyclomatic Complexity · Handler.parse (cyclomatic 18) · ×1

Handler.parse (cyclomatic 18) src/Propulsion.DynamoStore.Indexer/Handler.fs:6 — Handler.parse has cyclomatic complexity 18 (threshold 15). To reduce it, separate the branches: extract each independent case into its own named function so the top-level body reads as a short sequence of named decisions.

D1 · Cyclomatic Complexity · Handler.parse (cyclomatic 17) · ×1

Handler.parse (cyclomatic 17) src/Propulsion.DynamoStore.Notifier/Handler.fs:13 — Handler.parse has cyclomatic complexity 17 (threshold 15). To reduce it, separate the cases: extract each independent branch into its own named function, and where the body has guards that only reject input, fold those into early returns at the top.

D12 · Dependency Hygiene · Prerelease dependency · ×1

Prerelease dependency: SqlStreamStore — SqlStreamStore resolves to 1.2.0-beta.8, a prerelease build. Prerelease packages carry no support policy, may change breaking between previews and can be unlisted — pin a stable release before shipping, or record the reason this preview is required.

D2 · Cognitive Complexity · Handler.parse (cognitive 46) · ×1

Handler.parse (cognitive 46) src/Propulsion.DynamoStore.Indexer/Handler.fs:6 — Handler.parse has cognitive complexity 46 (threshold 15). Drivers by points: match/switch 19, if/else 17, loops 6, boolean chains 3, error handling 1 (nesting depth added 28). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · Handler.parse (cognitive 30) · ×1

Handler.parse (cognitive 30) src/Propulsion.DynamoStore.Notifier/Handler.fs:13 — Handler.parse has cognitive complexity 30 (threshold 15). Drivers by points: if/else 14, match/switch 12, boolean chains 2, error handling 1, loops 1 (nesting depth added 15). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · FeedMonitor.AwaitCompletion (cognitive 28) · ×1

FeedMonitor.AwaitCompletion (cognitive 28) src/Propulsion/Feed/FeedMonitor.fs:111 — FeedMonitor.AwaitCompletion has cognitive complexity 28 (threshold 15). Drivers by points: if/else 12, match/switch 11, boolean chains 4, loops 1 (nesting depth added 9). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · StreamQueue.insert (cognitive 28) · ×1

StreamQueue.insert (cognitive 28) src/Propulsion.DynamoStore/DynamoStoreIndex.fs:23 — StreamQueue.insert has cognitive complexity 28 (threshold 15). Drivers by points: if/else 26, loops 2 (nesting depth added 13). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · Impl.materializeIndexEpochAsBatchesOfStreamEvents (cognitive 25) · ×1

Impl.materializeIndexEpochAsBatchesOfStreamEvents (cognitive 25) src/Propulsion.DynamoStore/DynamoStoreSource.fs:43 — Impl.materializeIndexEpochAsBatchesOfStreamEvents has cognitive complexity 25 (threshold 15). Drivers by points: if/else 10, loops 7, match/switch 6, boolean chains 2 (nesting depth added 7). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · Engine`4.Pump (cognitive 22) · ×1

Engine`4.Pump (cognitive 22) src/Propulsion/Streams.fs:931 — Engine`4.Pump has cognitive complexity 22 (threshold 15). Drivers by points: if/else 18, boolean chains 2, error handling 1, loops 1 (nesting depth added 8). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · Sync.run (cognitive 22) · ×1

Sync.run (cognitive 22) tools/Propulsion.Tool/Sync.fs:219 — Sync.run has cognitive complexity 22 (threshold 15). Drivers by points: match/switch 13, if/else 9 (nesting depth added 4). To reduce it, keep the dispatch but shrink the arms: move each non-trivial case body into its own named function (or onto the value being matched) so the dispatch reads one line per case, and group related cases into a sub-dispatch. Keep every case explicit, and make the behaviour for cases you do not list a deliberate choice rather than an accident.

D2 · Cognitive Complexity · StreamStates`1.Dump (cognitive 19) · ×1

StreamStates`1.Dump (cognitive 19) src/Propulsion/Streams.fs:383 — StreamStates`1.Dump has cognitive complexity 19 (threshold 15). Drivers by points: if/else 17, boolean chains 1, loops 1 (nesting depth added 6). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · MemoryStoreMonitor.AwaitCompletion (cognitive 19) · ×1

MemoryStoreMonitor.AwaitCompletion (cognitive 19) src/Propulsion.MemoryStore/MemoryStoreSource.fs:96 — MemoryStoreMonitor.AwaitCompletion has cognitive complexity 19 (threshold 15). Drivers by points: if/else 8, match/switch 5, boolean chains 4, loops 2 (nesting depth added 7). The drivers above price the dispatch low by construction — a dispatch is charged once however many cases it lists, while each branch inside an arm is charged in full — so most of this count is what the case bodies hold, and the arms are where it can be reduced. To reduce it, keep the dispatch but shrink the arms: move each non-trivial case body into its own named function (or onto the value being matched) so the dispatch reads one line per case, and group related cases into a sub-dispatch. Keep every case explicit, and make the behaviour for cases you do not list a deliberate choice rather than an accident.

D2 · Cognitive Complexity · Reader.loadIndex (cognitive 18) · ×1

Reader.loadIndex (cognitive 18) src/Propulsion.DynamoStore/DynamoStoreIndex.fs:109 — Reader.loadIndex has cognitive complexity 18 (threshold 15). Drivers by points: if/else 15, loops 3 (nesting depth added 10). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · Dynamo.dumpSummary (cognitive 18) · ×1

Dynamo.dumpSummary (cognitive 18) tools/Propulsion.Tool/Args.fs:277 — Dynamo.dumpSummary has cognitive complexity 18 (threshold 15). Drivers by points: if/else 14, match/switch 3, loops 1 (nesting depth added 9). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · ProgressState`1.Dump (cognitive 17) · ×1

ProgressState`1.Dump (cognitive 17) src/Propulsion/Streams.fs:738 — ProgressState`1.Dump has cognitive complexity 17 (threshold 15). Drivers by points: if/else 9, match/switch 5, loops 2, boolean chains 1 (nesting depth added 10). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · ChangeFeedProcessor.Start (cognitive 16) · ×1

ChangeFeedProcessor.Start (cognitive 16) src/Propulsion.CosmosStore/ChangeFeedProcessor.fs:8 — ChangeFeedProcessor.Start has cognitive complexity 16 (threshold 15). Drivers by points: match/switch 7, loops 4, error handling 3, if/else 2 (nesting depth added 1). To reduce it, split the body into named stages: move each independent step or branch into its own named function so the body reads as a short sequence of named calls rather than one long body.

D2 · Cognitive Complexity · StreamState.combine (cognitive 16) · ×1

StreamState.combine (cognitive 16) src/Propulsion/Streams.fs:210 — StreamState.combine has cognitive complexity 16 (threshold 15). Drivers by points: if/else 11, boolean chains 3, match/switch 2 (nesting depth added 2). To reduce it, split the body: most of this score is breadth rather than depth — checks laid out side by side rather than stacked — so group the statements between the checks into named steps and move each step into its own function. Some of it IS depth: where a check sits inside another whose only job is to reach it, merge the two into one condition, and where an else follows a branch that already returns, drop the trailing else and let the rest of the body continue at one level.

D3 · God Classes · FileTooLong · ×1

FileTooLong: Propulsion/Streams.fs src/Propulsion/Streams.fs:0 — FileTooLong — 1031 significant lines (blank, comment-only and punctuation-only lines excluded). To reduce it, split the file along the responsibilities already in it: move each cohesive group of declarations into its own sibling file in the same module or package, so no one file has to be read whole to change one of them.

D36 · Supply-chain Provenance & Signing · Unpinned build actions · ×1

Unpinned build actions — CI references GitHub Actions by a floating ref (@main / @tag) rather than a pinned commit SHA, weakening build integrity. 2 floating ref(s) across 1 workflow file(s). Each floating ref is itemized at file:line by the SAST (D29) lens.

D36 · Supply-chain Provenance & Signing · Workflow token permissions not restricted · ×1

Workflow token permissions not restricted — No workflow declares a `permissions:` block, so every job runs with the repository's default GITHUB_TOKEN scope (1 workflow file(s) checked). On a repository whose default is read/write, a compromised action or a malicious pull request inherits write access to code, issues, releases and packages. Declare a least-privilege `permissions:` block — `permissions: {contents: read}` at the top of each workflow, widened per job only where a job genuinely writes.

D4 · Code Duplication · Duplicated block (12 lines × 2) · ×1

Duplicated block (12 lines × 2) src/Propulsion.CosmosStore/PropulsionCosmosStorePrometheus.fs:49 — src/Propulsion.CosmosStore/PropulsionCosmosStorePrometheus.fs:49-60 | src/Propulsion.Prometheus/FeedPrometheus.fs:45-56 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice. Note that the copies do not run to the end of the range shown: their LAST lines are different code, not the same code under different names — the matched region ends inside that line. Extract the lines above it, and read the last line of each site separately.

D4 · Code Duplication · Duplicated block (11 lines × 2) · ×1

Duplicated block (11 lines × 2) src/Propulsion.EventStoreDb/EventStoreSource.fs:36 — src/Propulsion.EventStoreDb/EventStoreSource.fs:36-47 | src/Propulsion.SqlStreamStore/SqlStreamStoreSource.fs:31-41 — the copies span different directories, so extracting a shared function means choosing where it lives: put it somewhere both call sites can already reach — a location they all depend on today, or a new shared one if there is none — and call it from each site; until then, every change has to be made twice. Read the line range as the matched WINDOW rather than a finished unit: at `src/Propulsion.EventStoreDb/EventStoreSource.fs:36` it begins part-way through the construct above it, so those exact lines cannot be lifted as they stand — widen the region to the smallest complete statement or declaration that contains it, and extract that.

D8 · Code Coverage · Coverage not measured · ×1

Coverage not measured — test suite did not build — Coverage NOT MEASURED: this repository did not build in our analyzer environment (a C#/MSBuild compiler error), so no coverage could be collected. It is excluded from the score rather than counted as a near-zero defect. We did not read WHERE the failing diagnostic is, so this does not claim the fault is in your test code — a repository written for an older SDK band can compile for you and not for us. Run `dotnet build` on this commit; if it succeeds, the gap is ours. Committing the Cobertura/OpenCover/lcov report your CI already produces also lets us measure real coverage without building anything.

Recommendation — 8 finding(s)

D11 · Test Reliability · Test reliability not included · ×1

Test reliability not included — Test source is present (.fs) but the built-in reliability runner does not support this repository's ecosystem, so flakiness couldn't be assessed. Not scored — this is a gap in the analyzer's language coverage, not a finding about this repository.

D16 · Bus Factor · Off-boarding risk · ×1

Off-boarding risk: anonymized user #1 — If anonymized user #1 becomes unavailable, 8 significant file(s) lose their only recent owner: src/Propulsion/Streams.fs, tools/Propulsion.Tool/Args.fs, tools/Propulsion.Tool/Sync.fs, src/Propulsion/Internal.fs, src/Propulsion/Pipeline.fs, src/Propulsion.MemoryStore/MemoryStoreSource.fs, tools/Propulsion.Tool/Infrastructure.fs, tools/Propulsion.Tool/Program.fs. Pair on, review, or document these before any departure.

D16 · Bus Factor · Further sole-owners (lower concentration) · ×1

Further sole-owners (lower concentration) — 1 other contributor(s) are each the sole owner of a small amount of code below the off-boarding threshold — folded into the bus-factor score and metrics (9 single-owned of 57 analysed files in total, counted over production source files of roughly 100 lines or more, excluding tests, vendored, generated and example/demo trees, largest first). They are anonymized user #2 (1 file(s)) — spread or document their files in the same way, at lower priority than the named off-boarding risks above.

D19 · Documentation Quality · The overview mentions DynamoStore serverless support but does not link to the dedicated DynamoStore section or the Serverless pipeline subsection in the outline. · ×1

The overview mentions DynamoStore serverless support but does not link to the dedicated DynamoStore section or the Serverless pipeline subsection in the outline. README.md — Link the 'Serverless event pipelines' section to the DynamoStore-specific components and the end-to-end system running only Lambda/DynamoDB.

D19 · Documentation Quality · The overview lists strong metrics support but does not mention or link to where Prometheus integration is documented. · ×1

The overview lists strong metrics support but does not mention or link to where Prometheus integration is documented. README.md — Add a sentence noting that Feed Sources and Projectors provide comprehensive logging/metrics, with an external link to the Prometheus pluggable guide.

D36 · Supply-chain Provenance & Signing · No build provenance · ×1

No build provenance — No SLSA provenance generation or build attestation found in CI — nothing binds a released artifact to the build that produced it, so a consumer cannot tell your artifact from a substituted one. On GitHub Actions, `actions/attest-build-provenance` (or slsa-github-generator) emits one from the job's own OIDC identity; elsewhere, run `cosign attest` over the released artifact from the release pipeline and publish the attestation beside it.

D36 · Supply-chain Provenance & Signing · No artifact signing · ×1

No artifact signing — No artifact signing found in CI — sign your released artifacts with whatever your ecosystem ships (a GPG/minisign detached signature — or `cosign sign-blob` — over the release archives, or over a checksum file published alongside them, Authenticode via signtool, or `dotnet nuget sign` for packages) so consumers can verify what you built.

D36 · Supply-chain Provenance & Signing · No SBOM · ×1

No SBOM — No SBOM generation or committed SBOM found — produce one with what your ecosystem ships (`sbom-tool generate` (install it with `dotnet tool install --global Microsoft.Sbom.DotNetTool`) or `dotnet CycloneDX` over the solution, `syft` (or `anchore/sbom-action` in CI) over the source tree or released image). Publish it as a release asset (`*.spdx.json` / `*.cdx.json`) so consumers can see what they are installing.

Info — 38 finding(s)

D12 · Dependency Hygiene · Outdated · ×37

Outdated: DotNet.ReproducibleBuilds — DotNet.ReproducibleBuilds 1.1.1 → 2.0.5 available (referenced by Propulsion.CosmosStore).
Outdated: Equinox.CosmosStore — Equinox.CosmosStore 4.1.0 → 4.1.3 available (referenced by Propulsion.CosmosStore).
Outdated: FsCodec.SystemTextJson — FsCodec.SystemTextJson 3.1.0 → 3.1.2 available (referenced by Propulsion.CosmosStore).
Outdated: MinVer — MinVer 5.0.0 → 7.0.0 available (referenced by Propulsion.CosmosStore).
Outdated: FsCodec — FsCodec 3.1.0 → 3.1.1 available (referenced by Propulsion.CosmosStore3).
Outdated: FSharp.Control.TaskSeq — FSharp.Control.TaskSeq 0.4.0 → 1.1.1 available (referenced by Propulsion.CosmosStore3).
Outdated: Microsoft.Azure.Cosmos — Microsoft.Azure.Cosmos 3.27.0 → 3.62.0 available (referenced by Propulsion.CosmosStore3).
Outdated: Amazon.CDK.Lib — Amazon.CDK.Lib 2.26.0 → 2.263.0 available (referenced by Propulsion.DynamoStore.Constructs).
Outdated: Amazon.Lambda.Core — Amazon.Lambda.Core 2.1.0 → 3.3.0 available (referenced by Propulsion.DynamoStore.Indexer).
Outdated: Amazon.Lambda.DynamoDBEvents — Amazon.Lambda.DynamoDBEvents 2.1.1 → 4.0.0 available (referenced by Propulsion.DynamoStore.Indexer).
Outdated: Amazon.Lambda.Serialization.SystemTextJson — Amazon.Lambda.Serialization.SystemTextJson 2.3.0 → 3.0.0 available (referenced by Propulsion.DynamoStore.Indexer).
Outdated: Serilog.Sinks.Console — Serilog.Sinks.Console 5.0.1 → 6.1.1 available (referenced by Propulsion.DynamoStore.Indexer).
Outdated: Amazon.Lambda.SQSEvents — Amazon.Lambda.SQSEvents 2.1.0 → 3.0.0 available (referenced by Propulsion.DynamoStore.Lambda).
Outdated: AWSSDK.SimpleNotificationService — AWSSDK.SimpleNotificationService 3.7.4.10 → 4.0.100.7 available (referenced by Propulsion.DynamoStore.Notifier).
Outdated: Equinox.DynamoStore — Equinox.DynamoStore 4.0.0 → 4.1.0 available (referenced by Propulsion.DynamoStore).
Outdated: Equinox.EventStore — Equinox.EventStore 4.0.0 → 4.1.3 available (referenced by Propulsion.EventStore).
Outdated: FsCodec.Box — FsCodec.Box 3.0.0 → 3.1.1 available (referenced by Propulsion.EventStore).
Outdated: Equinox.EventStoreDb — Equinox.EventStoreDb 4.0.0 → 4.1.0 available (referenced by Propulsion.EventStoreDb).
Outdated: FsCodec.NewtonsoftJson — FsCodec.NewtonsoftJson 3.1.0 → 3.1.1 available (referenced by Propulsion.Kafka).
Outdated: FsKafka — FsKafka 1.9.99) → 1.7.0 available (referenced by Propulsion.Kafka).
Outdated: Equinox.MemoryStore — Equinox.MemoryStore 4.0.0 → 4.1.0 available (referenced by Propulsion.MemoryStore).
Outdated: Npgsql — Npgsql 7.0.7 → 10.0.3 available (referenced by Propulsion.MessageDb).
Outdated: prometheus-net — prometheus-net 3.6.0 → 8.2.1 available (referenced by Propulsion.Prometheus).
Outdated: Dapper — Dapper 2.0.30 → 2.1.79 available (referenced by Propulsion.SqlStreamStore).
Outdated: Microsoft.Data.SqlClient — Microsoft.Data.SqlClient 2.1.7 → 7.0.2 available (referenced by Propulsion.SqlStreamStore).
+ 12 more in this group — see findings.md.

D22 · Internal API Consistency · No exposed public API · ×1

No exposed public API — No intentionally-exposed types (IsPackable or .Contracts) to evaluate.

Appendix B — Reproduction & audit trail

Every external tool invocation behind a deep-scan dimension — the tool, its captured version, the exact command, how many findings it yielded, and a link to the retained raw output. To reproduce any finding: check out the same commit and run the command shown (repo-relative — never an absolute scratch path). The complete raw scanner output is retained verbatim under artifacts/raw/ (indexed in artifacts/raw/index.json); per-invocation exit codes and wall-clock durations are in sidecar.json — kept out of this table so the rendered report stays byte-identical across runs of the same commit.

Dimension	Tool	Version	Command	Findings	Raw output
D28 · Secrets (history)	gitleaks	—	gitleaks detect --no-banner --report-format json --report-path /dev/stdout --exit-code 0 --source .	0	artifacts/raw/gitleaks-history.json
D29 · Static Analysis (SAST)	semgrep	—	semgrep --config /opt/semgrep-rules/security-audit.yml --config /opt/semgrep-rules/owasp-top-ten.yml --json --quiet --timeout 0 --metrics off .	2	artifacts/raw/semgrep.json
D30 · Dependency Vulnerabilities	dotnet	—	dotnet: not applicable — the solution did not restore on the analyzer's .NET SDK (an SDK/target-framework/restore mismatch, common for an older codebase), so there was no restored dependency graph to scan for NuGet CVEs — excluded rather than scored; re-run on an SDK that can restore this solution	0	—
D31 · IaC & Container Security	trivy	—	trivy: not applicable — No Infrastructure-as-Code or container manifests found (Dockerfile, Terraform, Kubernetes/Helm, CloudFormation); nothing to scan.	0	—
D32 · Data Compliance (PII/GDPR)	semgrep	—	semgrep: not applicable — No PII/GDPR-handling patterns detected (p/gdpr ruleset) — no data-compliance surface to assess.	0	—
D33 · JS/npm Dependency Vulnerabilities	trivy	—	trivy: not applicable — No JS/npm manifest or lockfile found outside build output (package.json, package-lock.json, yarn.lock, pnpm-lock.yaml, bun.lockb); no JS dependencies to scan.	0	—
D38 · OSV Dependency Vulnerabilities	osv-scanner	—	osv-scanner: not applicable — No supported non-.NET dependency lockfile found outside build output (npm package-lock/yarn/pnpm/bun, Go go.mod, Rust Cargo.lock, Maven pom.xml, Gradle lockfiles, Python requirements.txt/poetry.lock/Pipfile.lock/pdm.lock, PHP composer.lock, Ruby Gemfile.lock, Elixir mix.lock, Dart pubspec.lock, Swift Package.resolved); nothing for OSV to scan. A NuGet-only repo stays NotApplicable — .NET CVEs are D30's domain.	0	—
D40 · Network Egress Confinement	runtime-hardening	—	runtime-hardening: not applicable — No Kubernetes/orchestration workloads found in the repository manifests; network egress policy is a cluster-native control that may live at the platform/firewall layer, so there is nothing to assess here.	0	—
D41 · Kernel & Syscall Confinement	runtime-hardening	—	runtime-hardening: not applicable — No Kubernetes/orchestration workloads found in the repository manifests; seccomp/AppArmor/SELinux confinement is a workload-level control, so there is nothing to assess here.	0	—
D42 · Runtime Threat Enforcement	runtime-hardening	—	runtime-hardening: not applicable — No Kubernetes/orchestration workloads found in the repository manifests; runtime threat-detection and admission-control policy are cluster-level controls, so there is nothing to assess here.	0	—

Run 019fd554-8bf1-791d-acd0-6634937cce0b · every finding is also locatable in findings.md, and the complete scoring record (with exit codes + durations) in sidecar.json.

Jet/propulsion

Executive summary

Top priorities

Diagnosis — what's actually going on

Architecture — module dependency matrix

At a glance — Code Health · 88% · Strong

At a glance — Architecture · 100% · Exemplary

At a glance — Maturity · 68% · Adequate

At a glance — Readiness · 52% · Adequate · gated by P3

At a glance — Security · 68% · Adequate · gated by D36

At a glance — Domain Modelling · 100% · Exemplary

Security & Compliance — OWASP Top-10 mapping

Roadmap

File quality

Methodology & how to trust this report

Tools & methods

Run transparency — what happened this run

Limitations & what we did not check

Per-dimension blind spots

The LLM boundary

Dimensions

Frontend & cross-cutting dimensions

Reference — by lens

Appendix A — Findings (grouped)

Appendix B — Reproduction & audit trail

Downloadable artifacts