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docs(deps): replace Dependabot version-update policy with Renovate

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8
aws-infrastructure.md
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@ -44,13 +44,13 @@ This is the canonical statement; [dev-environment.md](dev-environment.md#nodejs)
## CDK Version Policy
Pin `aws-cdk-lib` to an exact version (no `^`, `~`, or `>=`) and let Dependabot keep it current. There is no static "blessed version" — the org standard is the latest release that passes the gates below. Do not add blanket `dependabot.yml` ignore entries for `aws-cdk-lib`; that is how pins rot into carrying known vulnerabilities.
Pin `aws-cdk-lib` to an exact version (no `^`, `~`, or `>=`) and let Renovate keep it current. There is no static "blessed version" — the org standard is the latest release that passes the gates below. Do not add blanket Renovate ignore rules for `aws-cdk-lib`; that is how pins rot into carrying known vulnerabilities.
Why exact + automated: the exact pin plus the lockfile gives reproducible builds; weekly Dependabot version updates keep the pin moving; CI (`npm ci` + `cdk synth`) and the dependency-review check reject a bad release at the PR. A release with broken bundled-dep metadata (e.g. 2.254.0) fails `npm ci` on its own bump PR; a release bundling a vulnerable transitive dep fails dependency review. Either way, a bad release never merges — the gates do the vetting, not a frozen number in this document.
Why exact + automated: the exact pin plus the lockfile gives reproducible builds; weekly Renovate PRs keep the pin moving; CI (`npm ci` + `cdk synth`) and the dependency-review check reject a bad release at the PR. A release with broken bundled-dep metadata (e.g. 2.254.0) fails `npm ci` on its own bump PR; a release bundling a vulnerable transitive dep fails dependency review. Either way, a bad release never merges — the gates do the vetting, not a frozen number in this document.
aws-cdk-lib bundles transitive dependencies (`inBundle: true`) that npm `overrides` cannot patch. When a bundled dep has a vulnerability, the only fix is advancing to a release that bundles the patched version — treat the alert as a prompt to merge the next Dependabot bump, never as something to dismiss indefinitely.
aws-cdk-lib bundles transitive dependencies (`inBundle: true`) that npm `overrides` cannot patch. When a bundled dep has a vulnerability, the only fix is advancing to a release that bundles the patched version — treat the alert as a prompt to merge the next Renovate bump, never as something to dismiss indefinitely.
If a specific release is known-bad, ignore that version only (`ignore: - dependency-name: aws-cdk-lib, versions: ["2.254.0"]`) with a comment explaining why, and remove the entry once a fixed release ships.
If a specific release is known-bad, exclude that version only with a `packageRules` entry in the repo's `renovate.json` (`matchPackageNames: ["aws-cdk-lib"], allowedVersions: "!/^2\\.254\\.0$/"`) with a comment explaining why, and remove the entry once a fixed release ships.
When upgrading, verify on a branch first:

6
cdk-project-layout.md
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@ -84,16 +84,16 @@ A handful of stacks predate this convention and remain PascalCase (e.g., `SeaHav
## Version Pinning
Pin `aws-cdk-lib` to an exact version (no `^`/`~`/`>=`) and let Dependabot keep it current — no blanket ignore entries. See [aws-infrastructure.md](aws-infrastructure.md#cdk-version-policy) for the full policy.
Pin `aws-cdk-lib` to an exact version (no `^`/`~`/`>=`) and let Renovate keep it current — no blanket ignore entries. See [aws-infrastructure.md](aws-infrastructure.md#cdk-version-policy) for the full policy.
`aws-cdk-lib` bundles transitive dependencies (`inBundle: true`). Certain versions break `npm ci` with phantom missing-package errors that cannot be fixed via npm `overrides`. CI gates Dependabot bumps automatically; when bumping manually, test first:
`aws-cdk-lib` bundles transitive dependencies (`inBundle: true`). Certain versions break `npm ci` with phantom missing-package errors that cannot be fixed via npm `overrides`. CI gates Renovate bumps automatically; when bumping manually, test first:
1. Update `package.json` to the new version
2. Run `rm -rf node_modules package-lock.json && npm install`
3. Run `npm ci` -- if it fails, the version is not safe
4. Run `npx cdk synth` -- if it fails, the version is not safe
Dependabot will flag vulnerabilities in bundled transitive deps. npm `overrides` cannot fix these — the remedy is advancing to the release that bundles the patched version. Merge the next `aws-cdk-lib` bump rather than dismissing the alert.
Dependabot alerts will flag vulnerabilities in bundled transitive deps. npm `overrides` cannot fix these — the remedy is advancing to the release that bundles the patched version. Merge the next `aws-cdk-lib` bump rather than dismissing the alert.
See [aws-infrastructure.md](aws-infrastructure.md#cdk-version-policy) for more detail.

105
github-standards.md
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@ -6,9 +6,9 @@
- Every repo gets a one-line description
- Every repo gets standard topics and a README badge block (see below)
- Default to `private` visibility for org repos
- Dependabot alerts and security updates enabled on all active repos
- Org-level defaults auto-enable alerts and security updates on new repos
- Every repo with dependencies gets a `.github/dependabot.yml` for weekly version updates
- Dependabot alerts enabled on all active repos. Version updates and security-fix PRs come from Renovate, not Dependabot.
- Org-level defaults auto-enable alerts on new repos
- Every repo with dependencies gets a root `renovate.json` that extends the org preset (see [Dependency Updates](#dependency-updates)). Do not add `.github/dependabot.yml`.
- Merge settings: enable **auto-merge** and **auto-delete head branch on merge** (`allow_auto_merge` + `delete_branch_on_merge`). These have no org-level default — set them per-repo at provisioning.
## Security & Merge Baseline
@ -22,7 +22,8 @@ Every active repo runs the same baseline. The security half is meant to be carri
| `code_security` (advanced security) | enabled | Sea Haven Standard config |
| Secret scanning + push protection | enabled | Sea Haven Standard config |
| Secret scanning non-provider patterns + validity checks | enabled | per-repo until added to the config |
| Dependabot alerts + security updates | enabled | org auto-enable default + config |
| Dependabot alerts | enabled | org auto-enable default + config |
| Dependabot security-update PRs | disabled once the repo is Interactive in Renovate | per-repo; Renovate opens the CVE fix PR instead |
| CodeQL default setup | configured | per-repo (`PATCH .../code-scanning/default-setup state=configured`) until added to the config |
Exceptions:
@ -32,85 +33,37 @@ Exceptions:
To audit drift: `gh api repos/<org>/<repo> --jq '{allow_auto_merge, delete_branch_on_merge, security_and_analysis}'` and `gh api repos/<org>/<repo>/code-scanning/default-setup --jq .state`.
## Dependabot Configuration
## Dependency Updates
Every active repo with package dependencies must have a `.github/dependabot.yml` that covers all relevant ecosystems.
Sea Haven uses the Mend Renovate GitHub App for dependency updates. Dependabot version updates are not used; do not add `.github/dependabot.yml`. Dependabot alerts stay on, and Dependabot security-update PRs are turned off once a repo is Interactive in Renovate so CVE fixes are not opened twice.
The org-wide policy lives in the `Sea-Haven-Industries/renovate-config` repo (`org-inherited-config.json`), which Mend applies to every repo automatically. Each repo also carries a root `renovate.json` so the preset chain is visible in the repo:
```json
{
"$schema": "https://docs.renovatebot.com/renovate-schema.json",
"extends": ["local>Sea-Haven-Industries/.github"]
}
```
Renovate detects package files on its own (`package.json`, `requirements.txt`, `.csproj`, `.tf`, workflow files). No per-ecosystem configuration is needed in the repo. Flip a repo from Silent to Interactive in the Mend Developer Portal when it should start receiving PRs.
### Pinning Principle
Exact pins are for reproducibility, not for freezing time. The pinned version is kept current by Dependabot version updates gated by CI and dependency review — never by a version number written in documentation.
Pins are for reproducibility, not for freezing time. The pinned version is kept current by Renovate PRs gated by CI and dependency review, never by a version number written in documentation.
- Never add a blanket `ignore` entry for a dependency. If a specific release is broken, ignore that release only (`versions: ["x.y.z"]`), with a comment, and remove the entry once a fixed release ships.
- npm, pip, and Terraform providers keep semver ranges (`rangeStrategy: bump`); the lockfile is the pin. GitHub Actions are pinned to a full commit SHA with a `# vX.Y.Z` comment.
- Runtime and language versions (`node-version`, `python-version`, Terraform `required_version`, `.terraform-version`) are not bumped by Renovate.
- Never add a blanket ignore for a dependency. If a specific release is broken, add a `packageRules` entry in the repo's `renovate.json` that excludes that version only, with a comment, and remove it once a fixed release ships.
- Never dismiss a vulnerability alert as "waiting for upstream" without a linked follow-up that advances the pin when the fix ships.
- If a bump PR fails CI, the gate worked — leave the bad release unmerged and take the next one.
- If a bump PR fails CI, the gate worked. Leave the bad release unmerged and take the next one.
### Ecosystem Selection
### Merging Renovate PRs
Choose ecosystems based on what dependency files exist in the repo:
| File | Ecosystem |
|------|-----------|
| `package.json` | `npm` |
| `requirements.txt` | `pip` |
| `.csproj` | `nuget` |
| `.github/workflows/*.yml` | `github-actions` |
### Standard Templates
**Single ecosystem (npm or pip):**
```yaml
version: 2
updates:
- package-ecosystem: "npm" # or "pip", "nuget", "github-actions"
directory: "/"
schedule:
interval: "weekly"
```
**SAM project with per-function `requirements.txt`:**
Add a separate entry for each directory containing a `requirements.txt`:
```yaml
version: 2
updates:
- package-ecosystem: "pip"
directory: "/src/processor"
schedule:
interval: "weekly"
- package-ecosystem: "pip"
directory: "/src/receiver"
schedule:
interval: "weekly"
```
**Mixed ecosystems (e.g., CDK in JS with Python Lambdas, or repos with GitHub Actions):**
Add one entry per ecosystem/directory:
```yaml
version: 2
updates:
- package-ecosystem: "npm"
directory: "/"
schedule:
interval: "weekly"
- package-ecosystem: "pip"
directory: "/src"
schedule:
interval: "weekly"
- package-ecosystem: "github-actions"
directory: "/"
schedule:
interval: "weekly"
```
### Merging Dependabot PRs
- **Patch and minor bumps:** Safe to merge without review in most cases
- **Major version bumps:** Review changelog for breaking changes before merging
- When merging multiple Dependabot PRs, merge one at a time — subsequent PRs will auto-rebase
- **Minor, patch, pin, and digest updates** are grouped per ecosystem and automerge once every check on the PR passes. Renovate merges the PR itself with squash and is a bypass actor on the `main branch review` ruleset and the per-repo `main merge queue` rulesets, so no human approval is needed. Required status checks still apply.
- **Major version bumps** and **security PRs** are not automerged. Review the changelog for breaking changes, then merge by hand.
- Renovate waits three days after a release before proposing it (`minimumReleaseAge`). Security PRs skip the wait.
- Renovate PRs do not need a Jira key.
## Branch Protection
@ -168,7 +121,7 @@ If the check name in the ruleset does not match what CI actually emits, merges w
Mergify YAML is not used. Converted CI keeps a `merge_group` trigger so native GitHub merge queues still run. Do not treat a missing Mergify config as a gap. Do not remove or retarget native GitHub merge-queue rulesets when flipping CI membership.
The formatter GitHub App is not on the main-branch ruleset bypass list.
The formatter GitHub App is not on the main-branch ruleset bypass list. The Renovate GitHub App is a bypass actor on `main branch review` and on each repo's `main merge queue` ruleset so it can merge its own non-major PRs; it is not a bypass actor on the required-status-check rulesets.
## Repo Hygiene

2
pull-requests.md
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@ -24,7 +24,7 @@ Each PR should represent a single logical change. If you find yourself writing "
| `fix(auth): correct null check in session handler (PLAT-7)` | `Bug fix` |
| `build: update Lambda runtime to Python 3.12 (DEV-88)` | `Updates` |
**Exemptions:** Dependabot PRs and permission-controlled emergency reverts are the only PRs that may omit the Jira key suffix.
**Exemptions:** Renovate PRs and permission-controlled emergency reverts are the only PRs that may omit the Jira key suffix.
## Description