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Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down.","context_why":"A note that does not affect this rating: measured against its own codebase's median, it is below the 85th percentile of 382 surveyed projects' largest files, where this check begins to count."}],"signals_run":11,"conclusive_signals":9,"what_a_person_adds":[{"id":"01.38","kind":"H+","where":"The team","measured":"No architecture or design document is in the tree, across 511 product files.","question":"Where does the design live, and who holds it?"},{"id":"01.39","kind":"H","where":"Your architects, with the product roadmap","question":"Is the architecture right for the next three years of the product?"},{"id":"01.40","kind":"H","where":"The team's reasoning at the time","question":"Were the home-grown components reasonable choices when they were made, and are they now?"}]},{"id":"02","band":"strong","name":"Engineering Process & SDLC Maturity","coverage":"high","findings":[{"id":"02.6","band":"adequate","layer":"deterministic","title":"Almost no process scaffolding exists in the repository","signal":"branch_protection_hints","weight":"corroborating","context":true,"evidence":[{"ref":"process-scaffolding","kind":"metric","detail":"1 of 5 markers present across 712 tracked files"}],"observed":{},"dimension":"02","rationale":"Of five ordinary markers — CI workflows, CODEOWNERS, a pull-request template, pre-commit hooks, contribution guidance — 1 is present: CI workflows. Branch protection itself is a GitHub setting rather than a file, so this is a reading of proxies and not of the rules themselves. What it does establish is that the process is not written down anywhere a new engineer would find it.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."}],"signals_run":16,"conclusive_signals":15,"what_a_person_adds":[{"id":"02.32","kind":"H","where":"The code host's pull request data","question":"Is review real or a rubber stamp? Comment depth and time to approve need the pull request history."},{"id":"02.38","kind":"H","where":"The issue tracker: backlog, sprint history, estimate accuracy","question":"Is delivery planned and measured, or heroic?"},{"id":"02.37","kind":"H","where":"Tickets, chat and postmortems","question":"How are incidents run, reviewed and learned from?"}]},{"id":"03","band":"strong","name":"Organization & Key-Person Risk","coverage":"partial","findings":[],"signals_run":10,"conclusive_signals":10,"what_a_person_adds":[{"id":"03.29","kind":"H+","where":"The deal terms","measured":"One contributor authored a quarter or more of the commits in this history.","question":"Is that person part of the transaction, and for how long after it?"},{"id":"03.28","kind":"H","where":"The team; review history only suggests candidates","question":"Who mentors whom, and would that survive a departure?"},{"id":"03.30","kind":"H","where":"Recruiting data and the org chart","question":"Can the team grow, and who stands behind the top three contributors?"},{"id":"03.31","kind":"H","where":"HR data","question":"Is the seniority mix sound, and will pay survive your salary bands?"},{"id":"03.14","kind":"H","where":"Interviews and on-call history","question":"Is the pace sustainable? Commit times cannot say: git keeps no reliable local time."},{"id":"03.32","kind":"H","where":"Interviews","question":"Does the team want to stay after close?"},{"id":"03.33","kind":"H","where":"Time with the team","question":"How are decisions made and disagreements resolved?"}]},{"id":"04","band":"strong","name":"Product & Engineering Maturity","coverage":"minimal","findings":[{"id":"04.5","band":"adequate","layer":"deterministic","title":"Effort is shifting from building to rewriting","signal":"churn_trend","weight":"corroborating","context":true,"evidence":[{"ref":"deletions-per-insertion","kind":"metric","detail":"first half 0.50, second half 0.75 (split 2023-11-12)"}],"observed":{},"dimension":"04","rationale":"Deleted lines per line added rose from 0.50 to 0.75 between the first and second halves of this history. Rework is normal and often healthy, but a rising ratio means an increasing share of the team's time is spent replacing code that already exists rather than building what does not. Whether that is deliberate repayment or churn is a question for the team.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"04.62","band":"adequate","layer":"deterministic","title":"Releases are cut from another branch than the one surveyed","signal":"release_branch","weight":"corroborating","context":true,"evidence":[{"ref":"6d02162d2","kind":"commit","detail":"tag v0.19.10"}],"observed":{"elsewhere":58,"on_branch":27,"tags_in_window":85,"direction_known":true,"later_on_branch":0},"dimension":"04","rationale":"The newest release, v0.19.10, is not on the branch this survey read; the newest release on it is v0.9.2. The shipped product may differ from what this report describes. Survey the release branch too.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":19,"conclusive_signals":13,"what_a_person_adds":[{"id":"04.32","kind":"H","where":"The data room and the team's record of estimates","question":"Can this team deliver the stated roadmap on the stated timeline?"},{"id":"04.31","kind":"H","where":"Budget and roadmap decisions","question":"Does leadership know about the debt, and is time budgeted to repay it?"},{"id":"04.33","kind":"H","where":"Revenue, customer and churn data","question":"Is the engineering shape consistent with the commercial story?"}]},{"id":"05","band":"adequate","name":"Security & Reliability Posture","coverage":"partial","findings":[{"id":"05.3","band":"adequate","layer":"deterministic","title":"56 dependencies float, and no lockfile is committed","signal":"dependency_pinning","weight":"corroborating","context":true,"evidence":[{"ref":"unpinned","kind":"path","path":"assets/package.json","detail":"^6.11.1","line_end":null,"verbatim":true,"line_start":11},{"ref":"unpinned","kind":"path","path":"assets/package.json","detail":"^6.3.3","line_end":null,"verbatim":true,"line_start":12},{"ref":"unpinned","kind":"path","path":"assets/package.json","detail":"^6.2.1","line_end":null,"verbatim":true,"line_start":13},{"ref":"unpinned","kind":"path","path":"assets/package.json","detail":"^6.4.7","line_end":null,"verbatim":true,"line_start":14},{"ref":"unpinned","kind":"path","path":"assets/package.json","detail":"^6.2.1","line_end":null,"verbatim":true,"line_start":15}],"observed":{},"dimension":"05","rationale":"Dependency versions are declared as ranges and no lockfile is committed, so a build today does not necessarily produce what a build last month produced. That matters twice over in a transaction: the thing being bought cannot be reproduced exactly, and a compromised upstream release arrives without anyone choosing to take it.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.6","band":"adequate","layer":"deterministic","title":"3 Dockerfiles run the application as root","signal":"container_runs_as_root","weight":"corroborating","evidence":[{"ref":"no-USER-instruction","kind":"path","path":"Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"iframe/Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"lib/livebook/hubs/dockerfile.ex","detail":"runs as root"}],"observed":{"rootful":3,"dockerfiles":3},"dimension":"05","rationale":"No USER instruction switches away from root, so the process runs with full privileges inside the container. 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A lockfile says which version is installed, not whether the flawed code is reachable from this product, so each needs a look. Most are fixed by an upgrade, and the advisory names the version. This lockfile pins development tools alongside what ships and does not say which is which, so some of these may never reach a user.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.60","band":"adequate","layer":"deterministic","title":"Relicensed: AGPL-3.0 → Apache-2.0 (2021-04-13)","signal":"licence_changes","weight":"corroborating","context":true,"evidence":[{"ref":"b90853de2","kind":"commit","path":"LICENSE","detail":"AGPL-3.0 from 2021-04-05"},{"ref":"22c90e8bc","kind":"commit","path":"LICENSE","detail":"Apache-2.0 from 2021-04-13"}],"observed":{"since":"2021-04-13","latest":"Apache-2.0","weaker":false,"narrowed_at":null,"narrowed_days":null,"licence_versions":2,"source_available":false,"narrowed_recently":false,"unreleased_changes":0},"dimension":"05","rationale":"The root licence changed 1 time(s). Code taken under earlier terms stays under them; check which terms any fork or customer relied on.","context_why":"A note that does not affect this rating: a licence change is a fact for the first screen, and only a narrowing of rights within two years of the surveyed commit costs \"strong\"."},{"id":"05.65","band":"adequate","layer":"deterministic","title":"5 advisories against this project in the last 24 months, 3 high or critical","signal":"advisory_record","weight":"corroborating","context":true,"evidence":[{"ref":"GHSA-qpjc-w5mm-73mj","kind":"advisory","detail":"2026-08-05: GHSA-qpjc-w5mm-73mj (moderate), fixed in 0.18.7: Unescaped deployment environment variables in generated setup commands"},{"ref":"GHSA-68c2-prqg-x62g","kind":"advisory","detail":"2026-08-05: GHSA-68c2-prqg-x62g (high), fixed in 0.18.7: JS-view sandboxed output can synthesize keyboard events to trigger unconfirmed global shortcuts (forced full evaluation / runtime restart)"},{"ref":"GHSA-pvvw-28fw-c6fg","kind":"advisory","detail":"2026-08-05: GHSA-pvvw-28fw-c6fg (moderate), fixed in 0.18.7: Livebook Teams Identity OAuth-style callback has no state/nonce binding, enabling login CSRF"},{"ref":"GHSA-74j5-6grg-g6wj","kind":"advisory","detail":"2026-08-05: GHSA-74j5-6grg-g6wj (high), fixed in 0.19.9: Livebook Teams Identity fails open to full unauthenticated access after a deployment group becomes unresolvable in the agent local cache"},{"ref":"GHSA-r4h8-2xpq-v48g","kind":"advisory","detail":"2026-08-05: GHSA-r4h8-2xpq-v48g (high), fixed in 0.18.7: Path traversal via unsanitized file_entries name on notebook import (arbitrary local file write)"}],"observed":{"newest":"2026-08-05","critical":0,"affecting":0,"could_not_tell":0,"fix_unreleased":0,"last_24_months":5,"sources_failed":[],"known_exploited":0,"high_or_critical":3,"affecting_newest_release_only":1},"dimension":"05","rationale":"The newest was published on 2026-08-05. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. None of them affects the surveyed commit. GHSA-68c2-prqg-x62g (high) is fixed in the surveyed commit; which release carries it cannot be told from this history, which does not place the release users run. Answer lives in: the version you run.","context_why":"A note that does not affect this rating: it describes the project's advisory record, and no advisory in it is known to affect the surveyed commit."}],"signals_run":34,"conclusive_signals":19,"what_a_person_adds":[{"id":"05.43","kind":"H+","where":"The security owner","measured":"No threat model is in the tree of what looks like a running service.","question":"Does one exist elsewhere, and who owns it?"},{"id":"05.41","kind":"H","where":"Ticketing and chat","question":"What has actually broken, how often, and how badly?"},{"id":"05.42","kind":"H","where":"Reports in the data room","question":"What did external testing find, and was it fixed?"},{"id":"05.44","kind":"H","where":"Audit reports; policy files in the tree are not evidence","question":"What is the SOC 2, ISO 27001 or GDPR status, and where is the evidence?"}]},{"id":"06","band":"adequate","name":"Observability & Operations","coverage":"partial","findings":[{"id":"06.8","band":"adequate","layer":"deterministic","title":"One request cannot be followed through the logs","signal":"correlation_ids","weight":"corroborating","evidence":[{"ref":"request ids","kind":"metric","detail":"no request id, correlation id or tracing found"}],"observed":{"tracing":false,"request_id_sites":0},"dimension":"06","rationale":"Nothing in the service carries a request or correlation id, and there is no tracing. When a customer reports a failure, the log lines that belong to their request cannot be picked out from everyone else's."},{"id":"06.9","band":"adequate","layer":"deterministic","title":"No error reporter is wired in","signal":"error_reporting","weight":"corroborating","context":true,"evidence":[{"ref":"error reporting","kind":"metric","detail":"no error reporter initialised"}],"observed":{"installed":[],"initialised":0,"config_files":0},"dimension":"06","rationale":"Nothing in the service initialises an error reporter (Sentry, Rollbar, Bugsnag, Honeybadger or an APM agent). 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Does that match your deployment and on-call model, or does it need rehosting first?"},{"id":null,"kind":"H+","question":"What is your tolerance for the findings above remaining unaddressed for the first two quarters after close, given everything else that will compete for this team's time?"},{"id":"07.11","kind":"H","where":"Your architecture","question":"Which of these systems duplicate yours, and which get retired?"},{"id":"07.12","kind":"H","where":"The engagement","question":"What will integration cost, and in what order?"},{"id":"07.13","kind":"H","where":"Your org design","question":"Where does the team land in your organisation, and who reports to whom?"},{"id":"07.14","kind":"H","where":"Deal terms","question":"Are there earn-outs, retention packages or contractor IP to assign?"},{"id":"07.15","kind":"H","where":"Customer contracts","question":"Do customer contracts limit hosting, regions or vendors?"}],"not_assessable_reason":"structurally not assessable from a 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