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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 11,859 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":"adequate","name":"Engineering Process & SDLC Maturity","coverage":"high","findings":[{"id":"02.24","band":"adequate","layer":"deterministic","title":"14% of recent commits change more than 2,000 lines","signal":"commit_size","weight":"corroborating","evidence":[{"ref":"git log --numstat","kind":"metric","detail":"1063 commits over 2,000 lines"}],"observed":{"share":0.143,"commits":7459,"over_2000_lines":1063},"dimension":"02","rationale":"1063 of 7459 commits in the last 24 months changed over 2,000 lines of code, not counting reformatting, renames, vendored or generated code. A change that size is rarely reviewed line by line. Ask how they were reviewed, and what made them that large."}],"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":"adequate","name":"Organization & Key-Person Risk","coverage":"partial","findings":[{"id":"03.1","band":"adequate","layer":"deterministic","title":"Bus factor 1: recent work is concentrated in one contributor","signal":"contributor_concentration","weight":"corroborating","evidence":[{"ref":"git shortlog -sn","kind":"metric","detail":"last 24 months: top author more than half of 7,964 commits; bus factor 1; 55 authors"}],"observed":{"years":1.8,"window":"last 24 months","authors":55,"top_share":"more than half","bus_factor":1,"authors_in_window":55,"top_share_all_time":"more than half","bus_factor_all_time":1},"dimension":"03","rationale":"In the last 24 months, one contributor authored more than half of 7,964 non-merge commits among 55 authors; across all history, more than half of 7,964. This is the single most expensive thing to discover after closing, and the repository cannot tell you whether that person is part of the transaction."}],"signals_run":10,"conclusive_signals":9,"what_a_person_adds":[{"id":"03.29","kind":"H+","where":"The deal terms","measured":"One contributor authored more than half 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":"adequate","name":"Product & Engineering Maturity","coverage":"minimal","findings":[{"id":"04.3","band":"adequate","layer":"deterministic","title":"228 direct dependencies in a single manifest","signal":"dependency_sprawl","weight":"corroborating","evidence":[{"ref":"direct-dependencies","kind":"path","path":"apps/sim/package.json","detail":"228 declared"},{"ref":"direct-dependencies","kind":"path","path":"apps/realtime/package.json","detail":"20 declared"},{"ref":"direct-dependencies","kind":"path","path":"apps/desktop/package.json","detail":"14 declared"},{"ref":"direct-dependencies","kind":"path","path":"packages/workflow-persistence/package.json","detail":"6 declared"}],"observed":{"set_aside":{"apps/docs/package.json":"not product code (docs)","packages/testing/package.json":"not product code (test)"},"by_manifest":{"apps/sim/package.json":228,"packages/db/package.json":4,"apps/desktop/package.json":14,"apps/pii/requirements.txt":5,"packages/cli/package.json":2,"apps/realtime/package.json":20,"packages/auth/package.json":2,"packages/emcn/package.json":4,"packages/audit/package.json":5,"packages/utils/package.json":0,"packages/logger/package.json":3,"packages/sim-cli/package.json":5,"packages/security/package.json":1,"packages/python-sdk/pyproject.toml":2,"packages/desktop-bridge/package.json":5,"packages/platform-authz/package.json":3,"packages/runtime-secrets/package.json":3,"packages/browser-protocol/package.json":0,"packages/deployment-config/package.json":1,"packages/realtime-protocol/package.json":1,"packages/terminal-protocol/package.json":1,"packages/workflow-persistence/package.json":6}},"unproven":true,"dimension":"04","rationale":"apps/sim/package.json declares 228 direct dependencies. Each one is a maintenance obligation, a supply-chain surface and a potential licence question that transfers with the asset. The count says nothing about whether any given dependency was a good choice; it says how many such choices a buyer inherits."},{"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":"11d5b23d0","kind":"commit","detail":"tag v1.0.0"}],"observed":{"elsewhere":15,"on_branch":433,"tags_in_window":448,"direction_known":true,"later_on_branch":0},"dimension":"04","rationale":"The newest release, v1.0.0, is not on the branch this survey read; the newest release on it is v0.9.32. 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":"202 dependencies float, and no lockfile is committed","signal":"dependency_pinning","weight":"corroborating","context":true,"evidence":[{"ref":"unpinned","kind":"path","path":"apps/desktop/package.json","detail":">=1.4.2","line_end":null,"verbatim":true,"line_start":12},{"ref":"unpinned","kind":"path","path":"apps/desktop/package.json","detail":">=20.0.0","line_end":null,"verbatim":true,"line_start":13},{"ref":"unpinned","kind":"path","path":"apps/desktop/package.json","detail":"^19","line_end":null,"verbatim":true,"line_start":55},{"ref":"unpinned","kind":"path","path":"apps/desktop/package.json","detail":"^19","line_end":null,"verbatim":true,"line_start":56},{"ref":"unpinned","kind":"path","path":"apps/desktop/package.json","detail":"^26.0.0","line_end":null,"verbatim":true,"line_start":60}],"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":"05.27","band":"adequate","layer":"deterministic","title":"The build runs third-party code it does not pin","signal":"supply_chain_pinning","weight":"corroborating","context":true,"evidence":[{"ref":".github/workflows/disk-gc.yml","kind":"path","path":".github/workflows/disk-gc.yml","detail":"download piped into a shell","line_end":52,"line_start":52}],"observed":{"action_refs":107,"pipe_to_shell":1,"unpinned_third_party":0},"dimension":"05","rationale":"1 step pipes a download straight into a shell. Tags have been moved to malicious commits in real supply-chain attacks, and a piped script is whatever the server returns that minute. Pinning to a commit is the fix, and it is small.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."},{"id":"05.21","band":"adequate","layer":"deterministic","title":"3 shell commands built from strings","signal":"shell_from_strings","weight":"corroborating","context":true,"evidence":[{"ref":"packages/cli/src/index.ts","kind":"path","path":"packages/cli/src/index.ts","detail":"command run through a shell","line_end":188,"line_start":188},{"ref":"packages/cli/src/index.ts","kind":"path","path":"packages/cli/src/index.ts","detail":"command run through a shell","line_end":189,"line_start":189},{"ref":"packages/cli/src/index.ts","kind":"path","path":"packages/cli/src/index.ts","detail":"command run through a shell","line_end":296,"line_start":296}],"observed":{"sites":3},"dimension":"05","rationale":"3 places run a command through a shell (`shell=True`, `os.system`, `exec` with a template) rather than passing arguments. Where any part comes from outside, it is command injection. Ask where each one's input comes from.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.48","band":"adequate","layer":"deterministic","title":"18 places insert HTML from a variable without sanitising it","signal":"unsafe_html","weight":"corroborating","context":true,"evidence":[{"ref":"apps/sim/app/(landing)/components/json-ld/json-ld.tsx","kind":"path","path":"apps/sim/app/(landing)/components/json-ld/json-ld.tsx","detail":"HTML from a variable","line_end":47,"line_start":47},{"ref":"apps/sim/app/_shell/public-env-script.tsx","kind":"path","path":"apps/sim/app/_shell/public-env-script.tsx","detail":"HTML from a variable","line_end":65,"line_start":65},{"ref":"apps/sim/app/layout.tsx","kind":"path","path":"apps/sim/app/layout.tsx","detail":"HTML from a variable","line_end":102,"line_start":102}],"observed":{"sites":18},"dimension":"05","rationale":"18 places set HTML from a value that is neither a literal nor passed through a sanitiser. Where the value can come from a user, that is stored cross-site scripting, and it is the first thing a buyer's security review looks for in a frontend.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.49","band":"adequate","layer":"deterministic","title":"The production build publishes source maps","signal":"source_maps_shipped","weight":"corroborating","evidence":[{"ref":"apps/sim/next.config.ts","kind":"path","path":"apps/sim/next.config.ts","detail":"source maps in a production build","line_end":34,"line_start":34}],"observed":{"sites":1},"dimension":"05","rationale":"The build configuration emits source maps for production, so the original source, with its comments and structure, is downloadable by every visitor. Upload them to an error tracker and keep them off the public server instead."},{"id":"05.61","band":"adequate","layer":"deterministic","title":"Part of the code is under a separate licence: apps/sim/ee/","signal":"paid_edition","weight":"corroborating","evidence":[{"ref":"apps/sim/ee/LICENSE","kind":"path","path":"apps/sim/ee/LICENSE","detail":"licence: unrecognised"}],"observed":{"directories":1},"dimension":"05","rationale":"A directory named for a paid edition carries its own licence. That code is usually not open source even where the rest is; what the buyer may do with each part differs."},{"id":"05.65","band":"adequate","layer":"deterministic","title":"1 advisory against this project in the last 24 months","signal":"advisory_record","weight":"corroborating","evidence":[{"ref":"GHSA-g4c9-f287-64xg","kind":"advisory","detail":"2025-09-08: GHSA-g4c9-f287-64xg (moderate): SimStudioAI: A function in route.ts is vulnerable to Code Injection"}],"observed":{"newest":"2025-09-08","critical":0,"affecting":1,"could_not_tell":0,"last_24_months":1,"sources_failed":["OSV PyPI simstudio-sdk (an empty record for a package published here)","OSV npm sim (an empty record for a package published here)","OSV npm sim-setup (an empty record for a package published here)","OSV npm simstudio-ts-sdk (an empty record for a package published here)","NVD"],"known_exploited":0,"high_or_critical":0},"dimension":"05","rationale":"The newest was published on 2025-09-08. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries."}],"signals_run":34,"conclusive_signals":26,"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":"06.2","band":"adequate","layer":"deterministic","title":"No structured logging library is in use","signal":"structured_logging","weight":"corroborating","evidence":[{"ref":"logging-scan","kind":"metric","detail":"searched 10,089 files for 10 structured logging libraries; 0 matched"}],"observed":{},"dimension":"06","rationale":"Nothing references a structured logging library. Logs that are written to be read by a person are not searchable by a machine, which means incident response here is proportional to how well someone remembers the codebase rather than to what the tooling can find."},{"id":"06.35","band":"adequate","layer":"deterministic","title":"Sends usage data to telemetry.simstudio.ai by default","signal":"usage_reporting_default","weight":"corroborating","evidence":[{"ref":"apps/sim/lib/monitoring/otlp.ts","kind":"path","path":"apps/sim/lib/monitoring/otlp.ts","detail":"reports to telemetry.simstudio.ai","line_end":34,"line_start":34},{"ref":"apps/sim/lib/api/contracts/user.ts","kind":"path","path":"apps/sim/lib/api/contracts/user.ts","detail":"the reporting setting is on by default","line_end":139,"line_start":139}],"observed":{"settings_on":4,"settings_off":5,"reporting_hosts":["telemetry.simstudio.ai"]},"dimension":"06","rationale":"apps/sim/lib/monitoring/otlp.ts sends to telemetry.simstudio.ai, and apps/sim/lib/api/contracts/user.ts leaves reporting on as shipped. Every installation reports to the vendor unless its operator turns this off. For a buyer running it inside their own product, that is an outbound data flow to a third party: ask what is sent, how often, and whether the buyer's customers were told."},{"id":"06.17","band":"adequate","layer":"deterministic","title":"The code branches on the environment's name at 27 places","signal":"environment_branching","weight":"corroborating","context":true,"evidence":[{"ref":"apps/realtime/src/env.ts","kind":"path","path":"apps/realtime/src/env.ts","detail":"branch on the environment name","line_end":36,"line_start":36},{"ref":"apps/sim/app/(auth)/verify/page.tsx","kind":"path","path":"apps/sim/app/(auth)/verify/page.tsx","detail":"branch on the environment name","line_end":2,"line_start":2},{"ref":"apps/sim/app/(auth)/verify/page.tsx","kind":"path","path":"apps/sim/app/(auth)/verify/page.tsx","detail":"branch on the environment name","line_end":19,"line_start":19}],"observed":{"sites":27},"dimension":"06","rationale":"27 places outside configuration test whether they are running in production or staging. Staging then does not exercise production's code, and each deploy is the first run of those branches. Differences belong in configuration the code reads, not in the code.","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":12,"what_a_person_adds":[{"id":"06.19","kind":"H+","where":"The operations team","measured":"Nothing in the tree backs up or restores data.","question":"How is data backed up, and has a restore ever been rehearsed?"},{"id":"06.10","kind":"H+","where":"The alerting tool and the on-call rota","measured":"No alert rule is defined in the repository.","question":"Where are alerts defined, who receives them, and when did one last fire?"},{"id":"06.29","kind":"H","where":"Pager history and dashboard logs","question":"Are the dashboards opened, the alerts acknowledged and the pages answered?"},{"id":"06.30","kind":"H","where":"Production metrics","question":"Are the service-level objectives actually met?"},{"id":"06.31","kind":"H","where":"Pager exports and interviews","question":"Who carries the pager, and how often does it go off?"},{"id":"06.32","kind":"H","where":"Cloud billing and capacity plans","question":"What does it cost to run, and how much headroom is there?"}]},{"id":"07","band":"not assessable","name":"Fit with the Acquirer","coverage":"none","findings":[],"signals_run":0,"conclusive_signals":0,"what_a_person_adds":[{"id":"07.1","kind":"H+","question":"This is primarily a TypeScript codebase. Does your engineering organisation already run TypeScript in production, or would this be the first?"},{"id":"07.10","kind":"H+","question":"The bulk of this system sits in apps/, packages/, helm/. Which of your existing systems would each of those have to absorb or replace?"},{"id":"07.2","kind":"H+","question":"The repository carries deployment configuration (docker-compose.ollama.yml and 52 more). 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