# Rampway Deploy

Rampway is a JavaScript-native release-directory deployment tool: the useful parts of Capistrano, built for Node/Expo/Velocious projects and designed to hand runtime changes to Rollbridge.

Package: `rampway`  
CLI: `rampway`  
Config: `rampway.config.mjs`

## Current MVP

This initial scaffold includes:

- ESM config loading and validation
- deterministic deploy plans
- local release-directory deploys for tests/dogfooding
- linked file/dir checks and symlink creation
- deploy lock acquisition/release
- release metadata (`REVISION`, `TRESTLE_RELEASE.json`)
- atomic `current` symlink publishing
- safe cleanup
- revision-fenced, idempotent post-publish cleanup recovery
- rollback to previous or selected release
- guarded publication recovery for an already-committed exact release
- JSONL deploy reports at `shared/log/rampway-deployments.jsonl`
- secret redaction helpers
- basic runtime adapter interface with `none` and Rollbridge validate/deploy/status/logs/recover helpers
- optional Rampway-owned authenticated Velocious deployment API at `rampway/velocious`

SSH transport command execution supports both local-copy and remote-git deployments. `remote-git` prepares each release checkout on the target host, so the target needs `git` and access to the configured repository.

Ordinary SSH projects need only deployment facts:

```js
transport: {
  type: "ssh"
},
hosts: [{host: "server.example", user: "deploy"}]
```

Rampway enforces strict host-key checking with the standard OpenSSH known-hosts
locations and selects `deploy.key` beside the config before readable standard
user identities for the direct deployment-host connection. A usable inherited
agent remains available for onward authentication, or as the direct fallback
when no identity file exists; otherwise Rampway owns a private agent for the
command and loads the discovered identities. SSH-form `remote-git` repositories
enable agent forwarding by default. Rampway pins the resolved socket with
`IdentityAgent`; optional standard identities rejected by `ssh-add` are skipped
after the selected deploy identity loads. Local control-plane branch resolution
uses the same strict known-host and agent profile, while pinned-revision HTTP
deploys do not require unused local SSH credentials. See the config reference
for deterministic identity, known-host, forwarding, and SSH-option overrides.

Guard a recovery deploy against an unexpectedly changed active release with:

```bash
rampway production deploy CANDIDATE_FULL_SHA --expected-active-revision ACTIVE_FULL_SHA
```

Both values must be full 40-character hexadecimal commit SHAs. The existing `before_deploy` and `before_lock` hooks still run before lock acquisition and remain outside the guard's protection. After Rampway acquires the normal deploy lock, its first locked operation strictly resolves `current` and reads that release's `REVISION`. A missing, unsafe, malformed, or mismatched current release fails before `after_lock` and all candidate/source, task, migration, backfill, runtime, and publication work. This option has no bootstrap semantics, and `--force` cannot bypass it. Deploys without the option retain the ordinary lifecycle.

Full config reference: [docs/config-reference.md](docs/config-reference.md)
Migrating from Capistrano: [docs/migration-from-capistrano.md](docs/migration-from-capistrano.md)

## Docker development environment

Rampway's canonical development environment is one persistent `dev` service built from the root `Dockerfile`: digest-pinned Ubuntu 26.04 LTS, exact signed/checksummed NodeSource Node 24, the universal coding/debugging baseline, and the current OpenCode, Codex, Claude Code, and official Kimi Code CLIs. The image is source-independent and installs no project dependencies or Threadwire.

Copy the portable environment template, prepare mount-target directories, start the service, and install locked dependencies inside it:

```bash
cp .env.example .env
scripts/prepare-dev-home.sh
docker compose up --build --detach dev
scripts/docker-run.sh npm ci
```

The complete dedicated development home is mounted at `/home/dev`; GitHub CLI configuration mounts read-only, and Hermes' shared provider runtime supplies Codex, OpenCode, and Kimi authorization through UID/GID-1000 bootstrap links. `scripts/docker-run.sh` executes project commands through the already-running service. Use a distinct `COMPOSE_PROJECT_NAME` and `DEV_HOME_PATH` for each concurrent instance.

Setup, credential boundaries, isolation, static checks, and Docker-capable coordinator validation are documented in [docs/docker-development-environment.md](docs/docker-development-environment.md).

## Commands

```bash
rampway init
rampway production validate
rampway production plan
rampway production plan <revision>
rampway production plan --json
rampway production deploy
rampway production deploy <revision>
rampway production deploy --transport=auto
rampway production deploy --transport=http
rampway production deploy --transport=ssh
rampway production status
rampway production releases
rampway production releases --json
rampway production task cache:warm
rampway production task cache:warm --json
rampway production tasks
rampway production tasks --json
rampway production rollback
rampway production resume-publication <exact-release-id>
rampway production cleanup-releases --expected-active-revision <active-full-sha>
rampway production cleanup-releases --expected-active-revision <active-full-sha> --dry-run
rampway production doctor
rampway production doctor --json

# Runtime maintenance for the current release
rampway production runtime-validate
rampway production runtime-status
rampway production runtime-logs
rampway production runtime-recover --yes
rampway production runtime-recover-generation-transition <failed-release-id> --yes

# Local foreground host-restart entrypoint for the last accepted release
rampway production runtime-boot --config /absolute/path/rampway.config.mjs
```

The older `rollbridge-validate`, `rollbridge-status`, `rollbridge-logs`, and
`rollbridge-recover` names remain aliases for Rollbridge stages.

Use [exact failed-generation recovery](docs/failed-generation-recovery.md) when
a Rollbridge deploy timed out or failed before publication and retained its
candidate transition fence. Recovery supports stages without an explicit
`runtime.config`, and later successful Rollbridge deploys refresh live retained
release pins before cleanup.

### Post-publish cleanup recovery

Publication and healthy runtime activation are the deploy success boundary. If
only Rampway's built-in release-retention cleanup fails after that boundary, the
deploy returns success as `deployed and active with cleanup pending`, persists a
bounded `cleanupFailure`, and prints the exact revision-fenced recovery command:

```bash
rampway production cleanup-releases --expected-active-revision ACTIVE_FULL_SHA
```

The recovery command takes the normal deploy lock and verifies the exact
persisted revision from the `current` release while holding the lock. Its fence
also supports local-copy branch labels and full 64-character Git revisions;
canonical 40- and 64-character hexadecimal revisions compare case-insensitively,
while other tokens compare exactly. A direct CLI deploy preserves its resolved
`--config` path in the generated command. Rampway then inventories live
release/runtime state, and removes only Rampway-managed releases that exceed
`keepReleases` and have no current, active-runtime, draining-runtime, or durable
runtime-pin protection. It replans before deletion and verifies by replanning
afterward. Ambiguous remote deletion or listing failures cause live-state
readback; Rampway never infers whether a remote delete ran from exit status alone.
Retries are idempotent. `--dry-run` holds the same fence and reports the plan but
does not delete releases or append a cleanup report.

Cleanup recovery never deploys code, hands off or restarts a runtime, changes
`current`, or runs application hooks. Failures from `before_cleanup`,
`after_cleanup`, report persistence, and lock release remain ordinary nonzero
deploy failures rather than cleanup-pending successes.

### Deploy transports

Deploys run over one of three transports selected with `--transport`:

- `http` — run the deploy through the authenticated Velocious control plane
  (requires `stage.http`). Fails if the stage has no control-plane config.
- `ssh` — run directly over the stage's SSH (or local) transport, bypassing the
  control plane.
- `auto` (default) — use the control plane when the stage configures
  `stage.http`, and fall back to the direct transport only when the control
  plane is unreachable or the project/stage is not deployed there. Never falls
  back on authentication or validation errors, or once a run has been admitted.

Dry runs always use the direct transport and print a plan, regardless of
`--transport`.

### Readable deploy output and automation

A normal deploy reports timed lifecycle progress and a concise result. Full
shell commands and redacted child stdout/stderr are written to the per-deploy
log instead of flooding the terminal:

```text
$ rampway production deploy
Logging deploy output to /srv/app/log/deploys/20260904123000-production.log
Deploying app/production revision 4f31c21 as release 20260904123000
→ Preparing deploy directories
✓ Preparing deploy directories (0.1s)
→ Task install
✓ Task install (8.4s)
✔ Deployed app/production revision 4f31c21 as release 20260904123000 in 12.7s
  Deploy log: /srv/app/log/deploys/20260904123000-production.log
```

Set `deployLog: false` explicitly to disable the persistent transcript. Human
deploys then retain the previous fallback of streaming redacted child output to
stderr so diagnostics are not discarded.

Use `--json` when another program consumes the result. It suppresses lifecycle
and child output and writes exactly one final JSON report, including for a
failed deploy:

```bash
rampway production deploy --json > deploy-report.json
```

For local development without installing the package globally:

```bash
node src/cli.js init
node src/cli.js local validate --config examples/local/rampway.config.mjs
node src/cli.js local plan --config examples/local/rampway.config.mjs
node src/cli.js local deploy --config examples/local/rampway.config.mjs

# Monorepo example with backend + frontend stages
node src/cli.js local validate --config examples/monorepo/rampway.config.mjs
node src/cli.js local plan --config examples/monorepo/rampway.config.mjs
```

## Config example

Reusable Node package install helpers can be imported from `rampway/tasks` when writing `rampway.config.mjs`:

```js
import {npmInstall, pnpmInstall, checkExpoWebArtifacts, velociousMigrate, onlyIfChanged} from "rampway/tasks"
```

```js
// rampway.config.mjs
export default {
  application: "routergeist",
  stages: {
    production: {
      repo: "git@github.com:kaspernj/routergeist.git",
      branch: "master",
      deployTo: "/home/dev/routergeist",
      strategy: "remote-git",
      transport: {type: "ssh"},
      hosts: [{host: "server.example", user: "dev", roles: ["app", "web", "db"]}],
      keepReleases: 5,
      linkedFiles: [
        {path: "backend/src/config/secrets.js", required: true}
      ],
      linkedDirs: ["log", "tmp/pids", "tmp/cache", "storage"],
      tasks: {
        install: [
          npmInstall({cwd: "backend", production: true}),
          pnpmInstall({cwd: "app", production: true})
        ],
        migrate: [
          velociousMigrate({cwd: "backend", env: {NODE_ENV: "production"}})
        ],
        build: [
          "cd app && npm run web:export",
          checkExpoWebArtifacts({dir: "app/dist"}),
          {command: "npm run assets:verify", cwd: "app", env: {NODE_ENV: "production"}}
        ]
      },
      operationalTasks: {
        "cache:warm": {
          command: "npm run cache:warm",
          cwd: "backend",
          env: {NODE_ENV: "production"},
          forwardEnv: ["CACHE_WARM_CREDENTIAL"]
        }
      },
      runtime: {
        type: "rollbridge",
        command: "npx rollbridge",
        packageDir: "backend",
        config: "config/rollbridge.production.mjs",
        daemonLogPath: "/home/dev/routergeist/shared/log/rollbridge.log",
        daemonPidPath: "/home/dev/routergeist/shared/tmp/pids/rollbridge.pid",
        socketPath: "/tmp/rollbridge-routergeist.sock",
        versionPath: "/home/dev/routergeist/shared/tmp/rollbridge-version"
      }
    }
  }
}
```

For Rollbridge, an explicit `runtime.config` is resolved relative to
`runtime.packageDir`, fingerprinted with the Rollbridge package version,
runtime options, and environment values, then copied into immutable
Rampway-owned material under `shared/rampway/runtime/`. After runtime and health
succeed, Rampway atomically records only the known-good digest and secret-free
activation locators in `shared/rampway/state.json`, indexed by release. Secret
environment values participate in change detection but are never stored or
logged. Keep the Rollbridge config self-contained; imported sibling files are
not copied.

That stable state lets rollback and runtime maintenance target a retained release
whose checkout has no Rampway helper or Rollbridge config. `packageDir` remains
relative to the selected application release, while the stored config comes from
trusted known-good material. A missing, malformed, mismatched, or config-less
Rollbridge state fails rollback before runtime or `current` changes. The first
successful Rampway deploy with an explicit config seeds this state.

For a candidate snapshot using Rollbridge 0.1.29 or newer, Rollbridge owns
incompatible config, socket, package, and runtime-owner replacement inside
`rollbridge deploy --ensure-daemon`. Rampway validates and deploys that candidate
without first shutting down the incumbent, and it surfaces a failed replacement
without the destructive legacy shutdown/retry fallback. When Rollbridge reports
that a rejected incompatible replacement left the incumbent authoritative,
Rampway also skips automatic previous-snapshot runtime restoration while keeping
the deploy or rollback failed, `current`, accepted runtime state, and the
original causal error unchanged. Candidates older than 0.1.29 retain Rampway's
compatibility path, which shuts down a responsive daemon before deploying a
changed runtime contract and may retry a reported legacy runtime mismatch once
after known-good shutdown. The first transition from a pre-split Rollbridge
owner to 0.1.29+ can still be disruptive while Rollbridge uses its documented,
narrowly authorized one-time pre-split bridge; Rampway does not preempt that
transaction or discard its guardian-owned process state.

After a configured Rollbridge handoff and all required health checks succeed,
Rampway also atomically writes `shared/rampway/runtime-boot.json`. This
versioned, integrity-protected record contains only application/stage identity,
the exact retained release and revision, the immutable config path and digest,
the secret-free full runtime contract digest, and its acceptance time. It
contains no runtime options, environment, commands,
credentials, or output. `runtime-boot` is local-only and verifies that record,
the retained release metadata, `REVISION`, `current`, the identical active and
retained runtime snapshot, its rollback compatibility, and immutable config
bytes before spawning Rollbridge 0.1.17 or newer in the foreground using:

```text
rollbridge daemon --config <absolute-config> --release-path <absolute-release> --release-id <id> --revision <revision>
```

The command never deploys or selects a fallback release. Missing, corrupt,
stale, mismatched, or config-less state fails closed. A service manager should
supervise `rampway`; Rampway does not supervise Rollbridge. A valid schema-1
boot record is upgraded atomically after its matching runtime snapshot,
material, and rollback compatibility have been verified. An exact lock-bound
external-owner handoff keeps its schema-1 record and attestation unchanged;
the next unlocked restart performs the migration.

For a persistent external foreground owner, opt in with
`runtime.externalOwner: {type: "foreground"}` (Rollbridge 0.1.38+). Optional
`handoffTimeoutMs` and `pollIntervalMs` positive integers bound the transition;
`handoffTimeoutMs` is one deadline for the authenticated `retire-owner` socket
round trip and the subsequent replacement polling after initial owner identity
verification.
This mode requires an explicit `runtime.config` so Rampway can persist stable
foreground boot material before any ownership transition.
Each deploy or rollback must establish the newly accepted boot attestation. If
the current foreground owner already reports that exact identity, it remains
untouched. An unreadable status or a release/runtime identity mismatch fails
closed without shutdown. When only the bootstrap is absent or stale, Rampway
sends one authenticated `retire-owner` control command — attested with the
accepted boot-state digest — through the configured `runtime.socketPath`
control socket. Retirement quiesces the old owner and releases its
proxy/control listeners promptly without waiting for long-draining workers,
so a serial outer supervisor can start the ordinary attested `runtime-boot`
replacement while the retired owner finishes draining. A stalled, truncated,
malformed, or non-success retirement response fails the handoff
deterministically within `handoffTimeoutMs`, without retrying retirement or
taking over the owner. Deploying over a retained external owner running
Rollbridge older than 0.1.21 fails closed before any shutdown or deploy,
because those versions cannot be retired without interrupting service while
workers drain; stage the migration through an intermediate 0.1.21+ release
with `runtime.externalOwner` disabled in an explicitly planned maintenance
restart, scheduled only after accepted long-running workers have drained, then
upgrade to Rollbridge 0.1.38+ before re-enabling it. Rampway accepts only
the exact release, runtime, and boot-digest attestation; timeout or
replacement failure preserves the accepted boot state and handoff request for
supervisor retry. Rampway never signals a status-reported PID and does not
invoke the service manager.

#### Required retained-runtime boundary

A release-scoped background-jobs generation comprises that
release's jobs-main and worker pool. The complete candidate generation starts
before activation. Deployment success is reached when the candidate release is
activated and healthy; the previous jobs-main and workers then retire as one
generation and drain asynchronously on their old release code and endpoint.
External-owner handoff must return without waiting for that generation, its jobs,
HTTP/WebSocket connections, or other retained services to exit. Those drains may
continue after the deploy command returns and deploy lock is released, and later
deploys must not serialize behind them.

Rampway owns the activation transaction, lock,
accepted runtime metadata, release-reference pins, and cleanup enforcement.
Rollbridge owns durable supervision of retained processes, including multiple
concurrently draining generations and recovery after an owner or host restart.
Rollbridge must report every referenced release directory, and Rampway must pin
it against `keepReleases` cleanup until that generation has fully retired. HTTP/
WebSocket drain completion or timeout does not end a jobs-generation reference.

During external-owner handoff, Rampway persists Rollbridge's complete referenced-
release set before cleanup while it still holds the deploy lock. Later deploys
query the durable supervisor again, so a release remains pinned across deploys
until Rollbridge no longer reports it.

When one project root has multiple independently deployed runtime owners, set a
path-safe stage-level `namespace` on every participating stage. For example,
`namespace: "web"` and `namespace: "worker"` under the same `deployTo`
use independent `releases/<namespace>`, `current/<namespace>`, shared content,
deploy locks, known-good runtime state and material, runtime boot state, owner
handoff requests, and reports. Each outer owner runs `runtime-boot` with the
config and stage for its namespace. Omitting `namespace` retains the legacy
single-runtime paths exactly. Do not mix namespaced and unnamespaced stages in
one `deployTo`; see [the config reference](docs/config-reference.md#deployment-namespaces).

`npmInstall`, `pnpmInstall`, `yarnInstall`, `bunInstall`, and `nodePackageInstall` return normal task entries with the right install command for common Node package managers. They accept `cwd`, `env`, `optional`, `production`, and lockfile options such as `clean: false` for `npm install` instead of `npm ci`, or `frozenLockfile: false` for package managers that need explicit CI lockfile opt-outs (`--no-frozen-lockfile` for pnpm and `--no-immutable` for Yarn). Yarn production installs are intentionally not guessed; use a custom task command when that project needs a specific Yarn workspace/plugin flow.

`checkExpoWebArtifacts` returns a task entry that fails if the Expo web build directory does not contain an `index.html`. It accepts `dir` (default `"dist"`), `cwd`, and `optional`.

`velociousMigrate` returns a task entry that runs `npx velocious db:migrate`. It accepts `command` (override), `cwd`, `env`, and `optional`.

`onlyIfChanged(paths, task)` wraps a task entry so it is skipped when none of the given relative paths have changed since the previous deploy. On the first deploy (no previous release), all tasks run regardless.

Task entries can be strings or objects.

- `command` — required shell command to run.
- `cwd` — optional release-relative working directory.
- `env` — optional environment variables passed to the command.
- `optional` — when `true`, the deploy records the task failure and continues.

Task groups run in config order. Required task failures stop the deploy before publish. If a candidate runtime handoff starts and then fails before publish, Rampway reactivates and health-checks the previous release using that release's known-good snapshot. Deploy failures include whether `current` changed and recovery hints for the affected stage, such as rerunning a before-publish failure, inspecting a newly created failed release directory, or inspecting `rampway status`, `rampway releases`, and `rampway rollback` after a failure that happened after publish. Existing release-id collisions do not suggest deleting the release directory.

Rollback runs under the same exclusive lock as deploy but never runs deploy task
groups, migrations, or candidate-local Rampway helpers. Rampway resolves one
retained release directory, activates it with the installed runtime adapter,
runs the configured health checks, and only then publishes `current`. If target
activation or health fails, Rampway reactivates and health-checks the prior
release before returning the original failure. Use `--to <exact-release-id>` for
a retained Capistrano release. Unsafe, nested, temporary, escaping, and
outside-symlink targets are rejected.

Release diagnostics include safe retained legacy directories. Cleanup ownership
does not: only releases carrying valid Rampway metadata for the configured
application and stage count toward `keepReleases` or can be removed by Rampway.
Cleanup excludes the `current` release, keeps the configured number of newest
managed releases, and excludes every release referenced by the runtime owner.

Standalone operational tasks are configured separately under `operationalTasks` and run only when explicitly selected with `rampway <stage> task <exact-name>`. Rampway acquires the shared deploy lock, strictly resolves the active release, and runs every required entry against that immutable release path. `forwardEnv` names caller-supplied environment variables that must be present; their values are transported separately from ordinary `env` and redacted from output and errors. Operational tasks do not run during deploy, accept no command arguments or `--force`, and are not included in the plural `tasks` deploy-task inventory.

## Callable deployments from Velocious

Velocious applications can mount the authenticated control plane exported as
`rampway/velocious`. The HTTP API accepts only allowlisted Rampway config/stage
targets, full Git commit SHAs reachable from an approved release branch, and
idempotency keys. Each admitted run is handed to a detached package-owned Node
worker, which reconstructs the backend Velocious context and executes Rampway's
existing deploy/rollback/status lifecycle; matching live revision/fence
requests coalesce onto that canonical worker, and a revision already active
under the deploy-host lock returns an explicit successful no-op before release
or runtime lifecycle work. Velocious remains the framework and persistence
runtime. See
[Velocious callable deployment API](docs/velocious-deployment-api.md) for
mounting, client calls, durable recovery behavior, and token
rotation/revocation.

## Deployment reports

Every successful deploy, rollback, or resumed publication appends one JSON object per line to `shared/log/rampway-deployments.jsonl`. Deploy events include:

- `event: "deploy"`
- `application`, `stage`, `releaseId`, `revision`, and `branch`
- `deployedAt` and `durationMs`
- `previousRelease`
- `healthChecks: "passed"`
- sanitized runtime status
- `cleanupRemoved` release IDs
- `cleanupStatus: "completed"` after ordinary cleanup, or `"pending"` when only
  built-in post-publish retention cleanup failed
- for pending cleanup, bounded `cleanupFailure` process status and confirmed
  partial-removal count plus the exact `cleanupRecoveryCommand`; these fields
  never contain commands, remote output, credentials, or deployment destinations
- optional `warnings` for non-fatal maintenance failures after runtime acceptance

Rollback events include `event: "rollback"`, target `releaseId` and `revision`,
`rolledBackAt`, `durationMs`, `previousRelease`, `healthChecks: "passed"`, and a
sanitized runtime result. Reports intentionally record runtime result summaries,
not runtime configuration or secrets. A provisional cleanup-pin removal failure
is reported as a warning and retained for later reconciliation; it does not turn
an already-accepted runtime activation into a failed deploy or rollback. Rampway
stores provisional pins outside accepted runtime state and clears only the pins
owned by the exact runtime configuration that positively reports its live
release references. Runtime changes preserve the previous owner's pins, and
runtimes without reference reporting retain their unresolved pins.

Resumed-publication events use `event: "resume-publication"`, `resumedAt`, the
exact target and previous release identities, `healthChecks: "passed"`, the
already-committed runtime summary, and normal cleanup results.

Successful non-dry-run `cleanup-releases` commands append
`event: "cleanup-releases"` reports with the revision fence, initial live plan,
explicit protection reasons, confirmed removals, final remaining releases, and
managed/protected/removable/removed/remaining counts. Dry runs print the same
shape without appending it.

When a remote-git deploy finds the requested revision already active under the
deploy lock, it appends the same bounded deploy event with `idempotent: true`,
the active `releaseId` and canonical `revision`, and `healthChecks: "unchanged"`
— no runtime result or health success is invented for work that did not run.

## Releasing

Patch releases are cut synchronously from a clean checkout with publish access to
npm:

```bash
npm run release:patch
```

The release script runs Rampway's lint, typecheck, and test suite before starting
the shared `release-patch` command. That command syncs `master`, derives the next
patch version from the latest published annotated `vX.Y.Z` tag, installs
dependencies, builds, and checks the package with a publish dry run. It then
commits the version files, creates an annotated tag, atomically pushes `master`
and that tag, publishes to npm, and verifies the published version before
returning. The Git push is atomic, but npm publication is a subsequent operation
and cannot be rolled back by that push. The command requires an npm login with
publish rights; publishing is not delegated to GitHub Actions.

If publishing fails after the commit and tag were pushed, inspect the failure and
resume that exact tagged release with `npx release-patch --resume`. The release
tool supports patch releases only; minor and major releases require a separately
defined process.

## Runtime adapters

Rampway resolves runtimes through a small adapter registry. Built-in adapters are
`compose`, `none`, and `rollbridge`; future adapters can register a runtime type without
changing the deploy lifecycle core. Runtime adapters implement `plan()` and
`deploy(...)`. Optional `prepare(...)` and `commit(...)` methods participate in
secret-free known-good state, and optional `validate`, `status`, `logs`, and
`recover` methods are exposed by the generic runtime commands.

Rollbridge runtime options:

- `command` — shell command used to invoke Rollbridge, defaulting to `npx rollbridge`.
- `packageDir` — release-relative directory where Rollbridge commands run.
- `config` — optional Rollbridge config path passed as `--config`.
- `daemonLogPath`, `daemonPidPath`, and `daemonStartTimeoutMs` — optional daemon flags forwarded to `rollbridge deploy`.
- `versionPath` — optional shared file where Rampway records the deployed Rollbridge package version.
- `socketPath` — optional Rollbridge socket removed after a version-change shutdown if a stale daemon leaves it behind.

When `versionPath` is configured, Rampway reads the release's installed Rollbridge package version before deploy. If it differs from the recorded version and the current runtime is responsive, Rampway shuts down the current Rollbridge daemon, removes configured stale daemon artifacts, deploys the new release, and records the new version.

### Compose runtime

Use `runtime: {type: "compose", composeRoot, handoffCommand, healthCommand}`
when an application is managed by a trusted, fixed Docker Compose deployment.
Rampway executes the static handoff command and then the static health command
from the absolute `composeRoot`. It records only a digest and the root in
known-good runtime state, never command text or secrets. See the
[config reference](docs/config-reference.md#compose) for the strict field
contract and rollback behavior.

## Safety model

Rampway prepares a complete release before flipping `current`. If a deploy fails before publish, `current` remains unchanged. Rollbridge runtime deploys are validated and health-checked with `rollbridge status` before `current` is updated. Cleanup never removes the `current` release or a release referenced by active or draining runtime processes. Long-running drains remain Rollbridge-owned background work outside deploy completion and the Rampway deploy lock. Rollback changes `current` to a previously prepared release and records a deployment event.
