diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 25e5827..9039eb6 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -31,6 +31,7 @@
 /.github/workflows/ci.yml @igor04091968 @rachkovii68-bisness
 /.github/workflows/security.yml @igor04091968 @rachkovii68-bisness
 /.github/workflows/coverage.yml @igor04091968 @rachkovii68-bisness
+/.github/GOVERNANCE.md @igor04091968 @rachkovii68-bisness
 /.github/pull_request_template.md @igor04091968 @rachkovii68-bisness
 /.github/ISSUE_TEMPLATE/ @igor04091968 @rachkovii68-bisness
 /.github/CODEOWNERS @igor04091968 @rachkovii68-bisness
@@ -38,6 +39,9 @@
 /docs/BRANCH_PROTECTION_EVIDENCE_RU.md @igor04091968 @rachkovii68-bisness
 /docs/PR_REVIEW_WORKFLOW_RU.md @igor04091968 @rachkovii68-bisness
 /docs/PR_REVIEW_EVIDENCE_RU.md @igor04091968 @rachkovii68-bisness
+/docs/ENTERPRISE_QUALITY_STANDARD_RU.md @igor04091968 @rachkovii68-bisness
+/docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md @igor04091968 @rachkovii68-bisness
+/docs/OPERATIONAL_MATURITY_RU.md @igor04091968 @rachkovii68-bisness
 
 # Ansible deployment automation.
 /ansible/ @igor04091968 @rachkovii68-bisness
diff --git a/.github/GOVERNANCE.md b/.github/GOVERNANCE.md
new file mode 100644
index 0000000..0da4fd5
--- /dev/null
+++ b/.github/GOVERNANCE.md
@@ -0,0 +1,41 @@
+# AWatch-rus Governance
+
+GitHub is the public mirror validation surface. Primary registry release
+evidence must be produced on the Russian build-runner and primary operational
+context remains the private Gitea contour.
+
+## Production-first standard
+
+AWatch-rus is already deployed in a real company. Production stability has
+absolute priority. The canonical engineering standard is:
+
+- [Enterprise quality standard](../docs/ENTERPRISE_QUALITY_STANDARD_RU.md)
+- [Review checklist](../docs/REVIEW_CHECKLIST_RU.md)
+- [Operational validation runbook](../docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md)
+- [Operational maturity harness](../docs/OPERATIONAL_MATURITY_RU.md)
+
+## Required PR evidence
+
+Every PR must state:
+
+- Purpose.
+- Operational impact.
+- Risk assessment.
+- Rollback strategy.
+- Validation steps.
+- Documentation changes.
+- Acceptance criteria.
+
+Documentation-only or governance-only PRs must explicitly state that runtime,
+API and UI behavior are unchanged.
+
+## Guardrails
+
+- Prefer additive, backward-compatible changes.
+- Do not redesign working subsystems without measured benefit.
+- Do not add dependencies without justification and validation.
+- Do not weaken authentication, authorization, audit logging, secret handling,
+  dependency hygiene or configuration validation.
+- Do not enable heavy DLP, Loki or always-on Velociraptor during routine
+  recovery, validation or public CI.
+- Keep blocking CI fast; keep heavy/load/nightly checks scheduled or advisory.
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 8ebaeb7..9e5a518 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -2,6 +2,12 @@
 
 Describe what changed and why.
 
+## Purpose
+
+State the production-quality purpose of the change. Prefer reliability,
+operational maturity, security, maintainability, reproducibility, performance
+or simplicity over new functionality.
+
 ## Impact
 
 - Runtime impact: `none / changed / not applicable`
@@ -11,14 +17,45 @@ Describe what changed and why.
 - Rollback impact: `none / documented / not applicable`
 - Evidence impact: `none / registry docs updated / release evidence required`
 
+## Operational Impact
+
+Describe deployment, upgrade, rollback, observability, diagnostics,
+configuration, recovery, performance or dependency-hygiene impact.
+
+## Risk Assessment
+
+List production risks and why the change is backward-compatible. For
+documentation-only or governance-only changes, state that runtime/API/UI behavior
+is unchanged.
+
+## Rollback Strategy
+
+State how to revert the change. Runtime, automation, config and dependency
+changes need an explicit rollback path.
+
 ## Validation
 
 List commands executed. Use `skipped: <reason>` when a check requires a live
 stand or unavailable tool.
 
+## Documentation Changes
+
+List README/runbook/architecture/governance updates, or state `not applicable`
+with a reason.
+
+## Acceptance Criteria
+
+List concrete conditions that make the PR safe to merge.
+
 ## Review Checklist
 
 - [ ] Linked issue is provided, or the PR explains why no issue is applicable.
+- [ ] Purpose, operational impact, risk assessment, rollback strategy,
+      validation steps, documentation changes and acceptance criteria are stated.
+- [ ] Change is additive/backward-compatible, or breaking impact is explicitly
+      blocked for this stage.
+- [ ] Production stability is preserved for existing deployments.
+- [ ] No working subsystem is redesigned without measured benefit.
 - [ ] Runtime/API/UI impact is stated.
 - [ ] Registry claims are checked and remain conservative.
 - [ ] Secrets, PII, employee logs and customer identifiers are absent.
@@ -33,6 +70,8 @@ stand or unavailable tool.
 - [ ] I checked registry claims: no completed registry submission, no
       FSTEC/FSB certification claim, no SIEM/DLP replacement claim.
 - [ ] I ran relevant checks or documented why a check was skipped.
+- [ ] I checked dependency impact: no unnecessary dependency was added, and no
+      unused dependency remains in touched crates.
 - [ ] I stated runtime/API/UI impact.
 - [ ] I stated documentation impact.
 - [ ] I stated smoke-test result or why smoke testing is not applicable.
@@ -48,6 +87,12 @@ stand or unavailable tool.
   build-runner.
 - Update `docs/registry/` when registry-readiness behavior or evidence changes.
 
+## Governance
+
+- Production-first standard: `.github/GOVERNANCE.md`.
+- Canonical review checklist: `docs/REVIEW_CHECKLIST_RU.md`.
+- Canonical validation runbook: `docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md`.
+
 ## Safety
 
 - No secrets, tokens, passwords or private keys.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b2bb990..68a4b7f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,6 +4,11 @@ GitHub is public mirror validation only. Primary registry release evidence is
 produced separately on the Russian build-runner and documented under
 `docs/registry/`.
 
+All contributions must follow the production-first governance entrypoint:
+`.github/GOVERNANCE.md`. AWatch-rus is already deployed in a real company, so
+reliability, operational maturity, security and backward compatibility take
+priority over new functionality.
+
 ## Branching
 
 - Работайте в feature-ветке, не пушьте напрямую в `main`.
@@ -49,6 +54,11 @@ produced separately on the Russian build-runner and documented under
 ## PR content
 
 - Изменения и обоснование.
-- Риск и rollback.
+- Purpose.
+- Operational impact.
+- Risk assessment.
+- Rollback strategy.
 - Какие команды валидации были выполнены.
+- Documentation changes.
+- Acceptance criteria.
 - Какие проверки были пропущены и почему, если пропуск был необходим.
diff --git a/README.md b/README.md
index a57557e..912183b 100755
--- a/README.md
+++ b/README.md
@@ -271,8 +271,16 @@ collectors.
 
 ### Engineering governance and residual risks
 
+- Enterprise quality standard:
+  [docs/ENTERPRISE_QUALITY_STANDARD_RU.md](docs/ENTERPRISE_QUALITY_STANDARD_RU.md).
+- GitHub governance entrypoint:
+  [.github/GOVERNANCE.md](.github/GOVERNANCE.md).
 - Review checklist:
   [docs/REVIEW_CHECKLIST_RU.md](docs/REVIEW_CHECKLIST_RU.md).
+- Operational validation runbook:
+  [docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md](docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md).
+- Operational maturity harness:
+  [docs/OPERATIONAL_MATURITY_RU.md](docs/OPERATIONAL_MATURITY_RU.md).
 - Residual risks register:
   [docs/RESIDUAL_RISKS_RU.md](docs/RESIDUAL_RISKS_RU.md).
 - Public issues plan:
diff --git a/docs/ENTERPRISE_QUALITY_STANDARD_RU.md b/docs/ENTERPRISE_QUALITY_STANDARD_RU.md
new file mode 100644
index 0000000..26901b0
--- /dev/null
+++ b/docs/ENTERPRISE_QUALITY_STANDARD_RU.md
@@ -0,0 +1,122 @@
+# AWatch-rus: enterprise quality standard
+
+Дата актуализации: 2026-07-01.
+
+AWatch-rus уже работает в production-контуре заказчика. Основная цель
+разработки - не добавление функций, а повышение надежности, эксплуатационной
+зрелости, безопасности, сопровождаемости и воспроизводимости.
+
+Приоритеты изменений, по убыванию:
+
+1. Reliability.
+2. Operational maturity.
+3. Security.
+4. Maintainability.
+5. Reproducibility.
+6. Performance.
+7. Simplicity.
+
+Новые функции не должны иметь приоритет над стабильностью production.
+
+## Production-first правила
+
+- Предполагать, что production deployment существует и пользователи зависят от
+  непрерывной работы.
+- Предпочитать additive/backward-compatible изменения.
+- Не перепроектировать работающие подсистемы без измеримой пользы.
+- Не включать heavy DLP, Loki или always-on Velociraptor без отдельного
+  operator-approved решения.
+- Не менять ActivityWatch logical host ids, bucket suffixes, Grafana variables
+  или ClickHouse workforce keys без отдельной compatibility-процедуры.
+- Fail closed для security-sensitive и deployment-sensitive paths.
+- Сохранять rollback path для runtime, automation, config и dependency changes.
+
+## Порядок принятия решений
+
+Перед реализацией любого изменения ответ должен быть положительным хотя бы на
+один вопрос:
+
+1. Улучшает ли это production stability?
+2. Снижает ли это operational risk?
+3. Улучшает ли это diagnostics или observability?
+4. Улучшает ли это maintainability?
+5. Уменьшает ли это технический долг с низким regression risk?
+
+Если ответ отрицательный на все пять вопросов, изменение не должно попадать в
+production-oriented PR.
+
+## Dependencies
+
+Перед добавлением зависимости нужно явно обосновать:
+
+- почему стандартной библиотеки недостаточно;
+- почему существующий workspace crate не решает задачу;
+- operational cost зависимости;
+- maintenance cost зависимости;
+- license/security impact.
+
+Неиспользуемые зависимости удаляются отдельными низкорисковыми PR после
+targeted tests. Обновление `Cargo.lock` без причины не допускается.
+
+## Required PR sections
+
+Каждый PR обязан содержать:
+
+- Purpose.
+- Operational impact.
+- Risk assessment.
+- Rollback strategy.
+- Validation steps.
+- Documentation changes.
+- Acceptance criteria.
+
+Для documentation-only/governance-only PR нужно явно указать, что runtime, API и
+UI impact отсутствуют.
+
+## Validation baseline
+
+Канонический набор проверок описан в
+`docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md`. Минимальный baseline для
+существенных Rust/runtime changes:
+
+```bash
+cd /mnt/usb_hdd2/Projects/ActivityWatch-Russian/adk-rust
+export CARGO_TARGET_DIR=/home/igor/.cache/detmir-adk-rust-target
+
+cargo fmt --all --check
+cargo test --workspace --all-targets --locked
+cargo test --workspace --doc --locked
+cargo clippy --workspace --all-targets --locked -- -D warnings
+cargo audit --deny warnings
+
+cd /mnt/usb_hdd2/Projects/ActivityWatch-Russian
+cargo deny --manifest-path adk-rust/Cargo.toml check \
+  --config deny.toml \
+  --hide-inclusion-graph \
+  --show-stats
+python3 scripts/public_secret_pattern_check.py
+node scripts/operational-maturity-check.mjs --json
+```
+
+Targeted checks are acceptable for small docs/governance or isolated changes,
+but skipped checks must have a concrete reason.
+
+## Technical debt policy
+
+Fix technical debt only when all conditions are true:
+
+- change is isolated;
+- regression risk is low;
+- tests or operational smoke cover the touched behavior;
+- documentation remains accurate.
+
+Otherwise create a follow-up task or document the residual risk instead of
+mixing broad cleanup into a functional PR.
+
+## Canonical references
+
+- Review checklist: `docs/REVIEW_CHECKLIST_RU.md`.
+- Validation runbook: `docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md`.
+- Operational maturity harness: `docs/OPERATIONAL_MATURITY_RU.md`.
+- PR workflow: `docs/PR_REVIEW_WORKFLOW_RU.md`.
+- GitHub governance entrypoint: `.github/GOVERNANCE.md`.
diff --git a/docs/REVIEW_CHECKLIST_RU.md b/docs/REVIEW_CHECKLIST_RU.md
index a8332a1..941e942 100644
--- a/docs/REVIEW_CHECKLIST_RU.md
+++ b/docs/REVIEW_CHECKLIST_RU.md
@@ -2,7 +2,7 @@
 
 Дата: 2026-06-22
 
-Статус: advisory checklist for public review process.
+Статус: canonical checklist for production-first PR review.
 
 Этот документ описывает проверочный чеклист для pull requests и внешнего
 инженерного review. Он не утверждает, что внешний peer review уже выполняется
@@ -13,7 +13,15 @@ release evidence должен производиться на российско
 
 ## Общая безопасность изменений
 
+- Изменение соответствует production-first стандарту:
+  `docs/ENTERPRISE_QUALITY_STANDARD_RU.md`.
+- Цель PR относится к reliability, operational maturity, security,
+  maintainability, reproducibility, performance или simplicity. Если PR добавляет
+  функциональность, он также объясняет measurable operational benefit.
 - Изменение имеет понятную цель, ограниченный scope and documented impact.
+- Изменение additive/backward-compatible, если нет отдельного
+  operator-approved breaking-change решения.
+- Не перепроектируются работающие подсистемы без измеримой пользы.
 - Нет секретов, токенов, паролей, приватных ключей, recovery codes or live
   credentials.
 - Нет персональных данных сотрудников, реальных employee logs or customer
@@ -52,6 +60,8 @@ release evidence должен производиться на российско
 - No runtime behavior is changed by documentation/governance-only PRs.
 - No service restart, migration or production config change is implied unless
   explicitly documented.
+- Existing production deployment remains compatible, including logical host ids,
+  bucket suffixes, Grafana variables and ClickHouse workforce keys.
 
 ## Registry-readiness impact
 
@@ -80,6 +90,9 @@ release evidence должен производиться на российско
 
 - README, `docs/PROJECT_STATUS_RU.md`, registry docs and operational runbooks
   are updated when claims, checks, workflows or procedures change.
+- Behavior changes update the relevant runbook and validation commands.
+- Architecture docs are updated when an interface, data flow, deployment
+  boundary or security boundary changes.
 - New claims are conservative and evidence-backed.
 - Pending work remains marked as planned/pending until evidence exists.
 - Public mirror wording remains separate from registry release evidence.
@@ -88,6 +101,8 @@ release evidence должен производиться на российско
 
 - PR states whether deployment action is required.
 - Rollback path is documented for runtime or automation changes.
+- Dependency changes are isolated, justified and include rollback by reverting
+  the dependency/lockfile PR.
 - Documentation-only PRs state that runtime/API/UI impact is unchanged.
 - Changes to scripts include syntax checks and a clear operator failure mode.
 
@@ -103,6 +118,9 @@ release evidence должен производиться на российско
 - For Rust/product changes, use
   `docs/OPERATIONS_VALIDATION_RUNBOOK_RU.md` as the default local validation
   contour.
+- Dependency hygiene and operational maturity checks are expected when touched
+  files can affect Rust dependencies, runtime contracts, configuration,
+  migrations, observability or CI governance.
 - For operator-facing web, gateway, worktime reports or Grafana dashboards,
   browser smoke through the rendered pages is required in addition to API checks.