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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":10,"what_a_person_adds":[{"id":"01.38","kind":"H+","where":"The team","measured":"No architecture or design document is in the tree, across 2,315 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":"02.16","band":"adequate","layer":"deterministic","title":"Tests are retried until they pass","signal":"flaky_test_markers","weight":"corroborating","context":true,"evidence":[{"ref":"playwright.config.ts","kind":"path","path":"playwright.config.ts","detail":"test retry","line_end":10,"line_start":10}],"observed":{"test_retries":0,"suite_retries":1},"dimension":"02","rationale":"The suite is configured to retry failing tests (playwright.config.ts). A retry turns a flaky test green without saying why it failed, so a green build means the tests passed eventually. Ask how many retries a typical run needs, and which tests need them.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"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 4,543 commits; bus factor 1; 439 authors"}],"observed":{"years":6.7,"window":"last 24 months","authors":612,"top_share":"more than half","bus_factor":1,"authors_in_window":439,"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 4,543 non-merge commits among 439 authors; across all history, more than half of 9,964. In a project with 439 recent contributors and 7 years of history, that is a question about one person's role rather than a fragile team — but it is the question to ask. "},{"id":"03.3","band":"adequate","layer":"deterministic","title":"1 of 16 major areas has only ever had one author","signal":"knowledge_silos","weight":"corroborating","context":true,"evidence":[{"ref":"sole-author","kind":"path","path":"scripts/","detail":"824 lines added"}],"observed":{},"dimension":"03","rationale":"Across 612 contributors, 1 substantial top-level area has been touched by exactly one person. The headline bus factor does not show this: a team can look well spread in aggregate and still have subsystems that stop moving the day one person stops working on them. For these areas, ask who else can change them today.","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":10,"conclusive_signals":10,"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":"112 direct dependencies in a single manifest","signal":"dependency_sprawl","weight":"corroborating","evidence":[{"ref":"direct-dependencies","kind":"path","path":"go.mod","detail":"112 declared"},{"ref":"direct-dependencies","kind":"path","path":"package.json","detail":"22 declared"}],"observed":{"set_aside":{".github/requirements.txt":"not product code (ci)"},"by_manifest":{"go.mod":112,"package.json":22}},"dimension":"04","rationale":"go.mod declares 112 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":"04.19","band":"adequate","layer":"deterministic","title":"17% of bug fixes add or change a test","signal":"fixes_with_tests","weight":"corroborating","evidence":[{"ref":"fix commits touching tests","kind":"metric","detail":"151 of 878"}],"observed":{"fixes":878,"share":0.172,"with_tests":151},"dimension":"04","rationale":"Of 878 fixes in the last 24 months, 151 touched a test. A fix without the test that would have caught the bug can quietly come back, and the suite never learns from what went wrong."},{"id":"04.38","band":"adequate","layer":"deterministic","title":"12 files still carry code deprecated more than two years ago","signal":"deprecations_lingering","weight":"corroborating","context":true,"evidence":[{"ref":"vehicle/mercedes/pb/acp.pb.go","kind":"path","path":"vehicle/mercedes/pb/acp.pb.go","detail":"deprecated since Feb 2024"},{"ref":"vehicle/mercedes/pb/client.pb.go","kind":"path","path":"vehicle/mercedes/pb/client.pb.go","detail":"deprecated since Feb 2024"},{"ref":"vehicle/mercedes/pb/cluster.pb.go","kind":"path","path":"vehicle/mercedes/pb/cluster.pb.go","detail":"deprecated since Feb 2024"},{"ref":"vehicle/mercedes/pb/eventpush.pb.go","kind":"path","path":"vehicle/mercedes/pb/eventpush.pb.go","detail":"deprecated since Feb 2024"},{"ref":"vehicle/mercedes/pb/protos/protos.pb.go","kind":"path","path":"vehicle/mercedes/pb/protos/protos.pb.go","detail":"deprecated since Feb 2024"}],"observed":{"older_than_two_years":12,"files_with_deprecations":20},"dimension":"04","rationale":"12 files were marked deprecated over two years ago and still are, the oldest since Feb 2024. A deprecation is a promise to remove. Ask what still depends on these, and whether removing them is scheduled.","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":"3674c1a59","kind":"commit","detail":"tag 0.318.2"}],"observed":{"elsewhere":21,"on_branch":352,"tags_in_window":373,"direction_known":true,"later_on_branch":0},"dimension":"04","rationale":"The newest release, 0.318.2, is not on the branch this survey read; the newest release on it is 0.318.0. 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":16,"what_a_person_adds":[{"id":"04.11","kind":"H+","where":"The team","measured":"2,698 commits landed in the last year, against 1,845 the year before (+46%).","question":"What drove it: new people, a deadline, or code produced faster than before?"},{"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":"05.1","band":"adequate","layer":"deterministic","title":"1 credential-shaped string in the tree sit in tests, examples, documentation or local development settings","signal":"committed_secrets","weight":"corroborating","evidence":[{"kind":"metric","ref":"private key block","detail":"private key block, where fakes are usual"}],"observed":{"sample_matches":1,"inert_tokens_set_aside":5},"dimension":"05","rationale":"Strings shaped like credentials appear only where fakes are usual: test fixtures, examples, documentation, placeholders and local stacks. They are almost always fakes. Ask someone to confirm that none of them works anywhere, because a real key in a development file is still a real key. 5 other matchs set aside: expired tokens, licence tokens a vendor verifies with a public key, or placeholder text where a key would go. None grants access to anything.","locations_withheld":1},{"id":"05.5","band":"adequate","layer":"deterministic","title":"1 credential-shaped string exists in the history","signal":"secrets_in_history","weight":"corroborating","context":true,"evidence":[{"kind":"metric","ref":"history","detail":"Google API key pattern added here"}],"observed":{},"dimension":"05","rationale":"Matches for Google API key were committed at some point across 10,143 commits examined. The files that held them are no longer in the working tree — but removal from a file is not removal from the history, and the history is what transfers with the asset. What matters is whether each was rotated after it was committed. The code cannot tell whether any of them is live, and that decides whether this matters: none sits in production configuration, and none is in a format its provider keeps for live keys. Is any of these live? Show that each was rotated after it was committed, and when. Only Google API keys matched. Those are often public by design, in a browser app's Firebase or Maps configuration; the question is whether each is restricted to the app's domains and APIs. 5 other matchs set aside: expired tokens, licence tokens a vendor verifies with a public key, or placeholder text where a key would go. None grants access to anything.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects.","locations_withheld":1},{"id":"05.6","band":"adequate","layer":"deterministic","title":"1 Dockerfile runs the application as root","signal":"container_runs_as_root","weight":"corroborating","evidence":[{"ref":"no-USER-instruction","kind":"path","path":"Dockerfile","detail":"runs as root"}],"observed":{"rootful":1,"dockerfiles":1},"dimension":"05","rationale":"No USER instruction switches away from root, so the process runs with full privileges inside the container. It is a one-line fix and an ordinary expectation, which is why its absence is worth asking about: it usually says more about whether anyone has reviewed the deployment than about this container specifically."},{"id":"05.20","band":"adequate","layer":"deterministic","title":"1 SQL statement built from strings","signal":"sql_from_strings","weight":"corroborating","context":true,"evidence":[{"ref":"server/http_site_handler.go","kind":"path","path":"server/http_site_handler.go","detail":"SQL built from a string","line_end":648,"line_start":648}],"observed":{"files":1,"sites":1,"value_interpolated":0},"dimension":"05","rationale":"1 places in product code build SQL by formatting or joining strings rather than passing parameters. In each, what the code shows going in is a table or column name, a constant, or something the line does not show, not a request's value. Ask whether any value reaches these strings, rather than a parameter.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.26","band":"adequate","layer":"deterministic","title":"1 locked dependency has published vulnerabilities, 4 high or critical","signal":"known_vulnerabilities","weight":"corroborating","context":true,"evidence":[{"ref":"package-lock.json","kind":"path","path":"package-lock.json","detail":"vite 1.3.0: GHSA-353f-5xf4-qw67 (high), fixed in 2.9.16; reached only by the build"}],"observed":{"advisories":21,"dependencies":519,"high_or_critical":4,"pinned_to_a_commit":0,"ecosystems_not_read":[],"vulnerable_packages":1,"set_aside_not_imported":3,"high_or_critical_shipping":0,"high_or_critical_not_shipped":{"build":4}},"dimension":"05","rationale":"1 of 519 locked dependencies match 21 published advisories in OSV, 4 of them rated high or critical. 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. None of the high or critical ones is in what the product ships: only the build reaches them: a bundler, a code generator, a build plugin, or a lockfile in a tooling directory.","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":34,"conclusive_signals":24,"what_a_person_adds":[{"id":"05.38","kind":"H+","where":"The provider's console and audit log","measured":"05.5 found credential-shaped strings in this repository.","question":"Was each one revoked at the provider? Deleting it from the code revokes nothing; only the provider's audit log shows that it was."},{"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":"strong","name":"Observability & Operations","coverage":"partial","findings":[{"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). An exception in production reaches a person only if someone is reading the logs, which usually means a customer reports it first.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":16,"conclusive_signals":10,"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 Go codebase. Does your engineering organisation already run Go in production, or would this be the first?"},{"id":"07.10","kind":"H+","question":"The bulk of this system sits in server/, i18n/, charger/. 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 (Dockerfile and 1 more). 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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