diff --git a/AGENTS.md b/AGENTS.md
index ccc0613..722bc23 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -39,7 +39,7 @@ disinto/                 (code repo)
 │                  hooks/ — Claude Code session hooks (on-compact-reinject, on-idle-stop, on-phase-change, on-pretooluse-guard, on-session-end, on-stop-failure)
 │                  init/nomad/ — cluster-up.sh, install.sh, vault-init.sh, lib-systemd.sh (Nomad+Vault Step 0 installers, #821-#825); wp-oauth-register.sh (Forgejo OAuth2 app + Vault KV seeder for Woodpecker, S3.3); deploy.sh (dependency-ordered Nomad job deploy + health-wait, S4)
 ├── nomad/         server.hcl, client.hcl (allow_privileged for woodpecker-agent, S3-fix-5), vault.hcl — HCL configs deployed to /etc/nomad.d/ and /etc/vault.d/ by lib/init/nomad/cluster-up.sh
-│                  jobs/ — Nomad jobspecs: forgejo.hcl (Vault secrets via template, S2.4); woodpecker-server.hcl + woodpecker-agent.hcl (host-net, docker.sock, Vault KV, S3.1-S3.2); agents.hcl (7 roles, llama, Vault-templated bot tokens, S4.1)
+│                  jobs/ — Nomad jobspecs: forgejo.hcl (Vault secrets via template, S2.4); woodpecker-server.hcl + woodpecker-agent.hcl (host-net, docker.sock, Vault KV, S3.1-S3.2); agents.hcl (7 roles, llama, Vault-templated bot tokens, S4.1); vault-runner.hcl (parameterized batch dispatch, S5.3)
 ├── projects/      *.toml.example — templates; *.toml — local per-box config (gitignored)
 ├── formulas/      Issue templates (TOML specs for multi-step agent tasks)
 ├── docker/        Dockerfiles and entrypoints: reproduce, triage, edge dispatcher, chat (server.py, entrypoint-chat.sh, Dockerfile, ui/)
diff --git a/nomad/jobs/edge.hcl b/nomad/jobs/edge.hcl
new file mode 100644
index 0000000..1f3e855
--- /dev/null
+++ b/nomad/jobs/edge.hcl
@@ -0,0 +1,193 @@
+# =============================================================================
+# nomad/jobs/edge.hcl — Edge proxy (Caddy + dispatcher sidecar) (Nomad service job)
+#
+# Part of the Nomad+Vault migration (S5.1, issue #988). Caddy reverse proxy
+# routes traffic to Forgejo, Woodpecker, staging, and chat services. The
+# dispatcher sidecar polls disinto-ops for vault actions and dispatches them
+# via Nomad batch jobs.
+#
+# Host_volume contract:
+#   This job mounts caddy-data from nomad/client.hcl. Path
+#   /srv/disinto/caddy-data is created by lib/init/nomad/cluster-up.sh before
+#   any job references it. Keep the `source = "caddy-data"` below in sync
+#   with the host_volume stanza in client.hcl.
+#
+# Build step (S5.1):
+#   docker/edge/Dockerfile is custom (adds bash, jq, curl, git, docker-cli,
+#   python3, openssh-client, autossh to caddy:latest). Build as
+#   disinto/edge:local using the same pattern as disinto/agents:local.
+#   Command: docker build -t disinto/edge:local -f docker/edge/Dockerfile docker/edge
+#
+# Not the runtime yet: docker-compose.yml is still the factory's live stack
+# until cutover. This file exists so CI can validate it and S5.2 can wire
+# `disinto init --backend=nomad --with edge` to `nomad job run` it.
+# =============================================================================
+
+job "edge" {
+  type        = "service"
+  datacenters = ["dc1"]
+
+  group "edge" {
+    count = 1
+
+    # ── Vault workload identity for dispatcher (S5.1, issue #988) ──────────
+    # Service role for dispatcher task to fetch vault actions from KV v2.
+    # Role defined in vault/roles.yaml, policy in vault/policies/dispatcher.hcl.
+    vault {
+      role = "service-dispatcher"
+    }
+
+    # ── Network ports (S5.1, issue #988) ──────────────────────────────────
+    # Caddy listens on :80 and :443. Expose both on the host.
+    network {
+      port "http" {
+        static = 80
+        to     = 80
+      }
+
+      port "https" {
+        static = 443
+        to     = 443
+      }
+    }
+
+    # ── Host-volume mounts (S5.1, issue #988) ─────────────────────────────
+    # caddy-data: ACME certificates, Caddy config state.
+    volume "caddy-data" {
+      type      = "host"
+      source    = "caddy-data"
+      read_only = false
+    }
+
+    # ops-repo: disinto-ops clone for vault actions polling.
+    volume "ops-repo" {
+      type      = "host"
+      source    = "ops-repo"
+      read_only = false
+    }
+
+    # ── Conservative restart policy ───────────────────────────────────────
+    # Caddy should be stable; dispatcher may restart on errors.
+    restart {
+      attempts = 3
+      interval = "5m"
+      delay    = "15s"
+      mode     = "delay"
+    }
+
+    # ── Service registration ───────────────────────────────────────────────
+    # Caddy is an HTTP reverse proxy — health check on port 80.
+    service {
+      name     = "edge"
+      port     = "http"
+      provider = "nomad"
+
+      check {
+        type     = "http"
+        path     = "/"
+        interval = "10s"
+        timeout  = "3s"
+      }
+    }
+
+    # ── Caddy task (S5.1, issue #988) ─────────────────────────────────────
+    task "caddy" {
+      driver = "docker"
+
+      config {
+        # Use pre-built disinto/edge:local image (custom Dockerfile adds
+        # bash, jq, curl, git, docker-cli, python3, openssh-client, autossh).
+        image      = "disinto/edge:local"
+        force_pull = false
+        ports      = ["http", "https"]
+
+        # apparmor=unconfined matches docker-compose — needed for autossh
+        # in the entrypoint script.
+        security_opt = ["apparmor=unconfined"]
+      }
+
+      # Mount caddy-data volume for ACME state and config directory.
+      # Caddyfile is mounted at /etc/caddy/Caddyfile by entrypoint-edge.sh.
+      volume_mount {
+        volume      = "caddy-data"
+        destination = "/data"
+        read_only   = false
+      }
+
+      # ── Non-secret env ───────────────────────────────────────────────────
+      env {
+        FORGE_URL       = "http://forgejo:3000"
+        FORGE_REPO      = "disinto-admin/disinto"
+        DISINTO_CONTAINER = "1"
+        PROJECT_NAME    = "disinto"
+      }
+
+      # Caddy needs CPU + memory headroom for reverse proxy work.
+      resources {
+        cpu    = 200
+        memory = 256
+      }
+    }
+
+    # ── Dispatcher task (S5.1, issue #988) ────────────────────────────────
+    task "dispatcher" {
+      driver = "docker"
+
+      config {
+        # Use same disinto/agents:local image as other agents.
+        image      = "disinto/agents:local"
+        force_pull = false
+
+        # apparmor=unconfined matches docker-compose.
+        security_opt = ["apparmor=unconfined"]
+
+        # Mount docker.sock via bind-volume (not host volume) for legacy
+        # docker backend compat. Nomad host volumes require named volumes
+        # from client.hcl; socket files cannot be host volumes.
+        volumes = ["/var/run/docker.sock:/var/run/docker.sock:ro"]
+      }
+
+      # Mount ops-repo for vault actions polling.
+      volume_mount {
+        volume      = "ops-repo"
+        destination = "/home/agent/repos/disinto-ops"
+        read_only   = false
+      }
+
+      # ── Vault-templated secrets (S5.1, issue #988) ──────────────────────
+      # Renders FORGE_TOKEN from Vault KV v2 for ops repo access.
+      template {
+        destination          = "secrets/dispatcher.env"
+        env                  = true
+        change_mode          = "restart"
+        error_on_missing_key = false
+        data                 = <<EOT
+{{- with secret "kv/data/disinto/bots/vault" -}}
+FORGE_TOKEN={{ .Data.data.token }}
+{{- else -}}
+# WARNING: kv/disinto/bots/vault is empty — run tools/vault-seed-agents.sh
+FORGE_TOKEN=seed-me
+{{- end }}
+EOT
+      }
+
+      # ── Non-secret env ───────────────────────────────────────────────────
+      env {
+        DISPATCHER_BACKEND   = "nomad"
+        FORGE_URL            = "http://forgejo:3000"
+        FORGE_REPO           = "disinto-admin/disinto"
+        FORGE_OPS_REPO       = "disinto-admin/disinto-ops"
+        PRIMARY_BRANCH       = "main"
+        DISINTO_CONTAINER    = "1"
+        OPS_REPO_ROOT        = "/home/agent/repos/disinto-ops"
+        FORGE_ADMIN_USERS    = "vault-bot,admin"
+      }
+
+      # Dispatcher is lightweight — minimal CPU + memory.
+      resources {
+        cpu    = 100
+        memory = 256
+      }
+    }
+  }
+}
diff --git a/nomad/jobs/vault-runner.hcl b/nomad/jobs/vault-runner.hcl
new file mode 100644
index 0000000..f7b9aed
--- /dev/null
+++ b/nomad/jobs/vault-runner.hcl
@@ -0,0 +1,132 @@
+# =============================================================================
+# nomad/jobs/vault-runner.hcl — Parameterized batch job for vault action dispatch
+#
+# Part of the Nomad+Vault migration (S5.3, issue #990). Replaces the
+# `docker run --rm vault-runner-${action_id}` pattern in dispatcher.sh with
+# a Nomad-native parameterized batch job. Dispatched by the edge dispatcher
+# (S5.4) via `nomad job dispatch`.
+#
+# Parameterized meta:
+#   action_id   — vault action identifier (used by entrypoint-runner.sh)
+#   secrets_csv — comma-separated secret names (e.g. "GITHUB_TOKEN,DEPLOY_KEY")
+#
+# Vault integration (approach A — pre-defined templates):
+#   All 6 known runner secrets are rendered via template stanzas with
+#   error_on_missing_key = false. Secrets not granted by the dispatch's
+#   Vault policies render as empty strings. The dispatcher (S5.4) sets
+#   vault { policies = [...] } per-dispatch based on the action TOML's
+#   secrets=[...] list, scoping access to only the declared secrets.
+#
+# Cleanup: Nomad garbage-collects completed batch dispatches automatically.
+# =============================================================================
+
+job "vault-runner" {
+  type        = "batch"
+  datacenters = ["dc1"]
+
+  parameterized {
+    meta_required = ["action_id", "secrets_csv"]
+  }
+
+  group "runner" {
+    count = 1
+
+    # ── Vault workload identity ──────────────────────────────────────────────
+    # Per-dispatch policies are composed by the dispatcher (S5.4) based on the
+    # action TOML's secrets=[...] list. Each policy grants read access to
+    # exactly one kv/data/disinto/runner/<NAME> path. Roles defined in
+    # vault/roles.yaml (runner-<NAME>), policies in vault/policies/.
+    vault {}
+
+    volume "ops-repo" {
+      type      = "host"
+      source    = "ops-repo"
+      read_only = true
+    }
+
+    # No restart for batch — fail fast, let the dispatcher handle retries.
+    restart {
+      attempts = 0
+      mode     = "fail"
+    }
+
+    task "runner" {
+      driver = "docker"
+
+      config {
+        image      = "disinto/agents:local"
+        force_pull = false
+        entrypoint = ["bash"]
+        args       = [
+          "/home/agent/disinto/docker/runner/entrypoint-runner.sh",
+          "${NOMAD_META_action_id}",
+        ]
+      }
+
+      volume_mount {
+        volume      = "ops-repo"
+        destination = "/home/agent/ops"
+        read_only   = true
+      }
+
+      # ── Non-secret env ───────────────────────────────────────────────────────
+      env {
+        DISINTO_CONTAINER = "1"
+        FACTORY_ROOT      = "/home/agent/disinto"
+        OPS_REPO_ROOT     = "/home/agent/ops"
+      }
+
+      # ── Vault-templated runner secrets (approach A) ────────────────────────
+      # Pre-defined templates for all 6 known runner secrets. Each renders
+      # from kv/data/disinto/runner/<NAME>. Secrets not granted by the
+      # dispatch's Vault policies produce empty env vars (harmless).
+      # error_on_missing_key = false prevents template-pending hangs when
+      # a secret path is absent or the policy doesn't grant access.
+      #
+      # Placeholder values kept < 16 chars to avoid secret-scan CI failures.
+      template {
+        destination          = "secrets/runner.env"
+        env                  = true
+        error_on_missing_key = false
+        data                 = <<EOT
+{{- with secret "kv/data/disinto/runner/GITHUB_TOKEN" -}}
+GITHUB_TOKEN={{ .Data.data.value }}
+{{- else -}}
+GITHUB_TOKEN=
+{{- end }}
+{{- with secret "kv/data/disinto/runner/CODEBERG_TOKEN" -}}
+CODEBERG_TOKEN={{ .Data.data.value }}
+{{- else -}}
+CODEBERG_TOKEN=
+{{- end }}
+{{- with secret "kv/data/disinto/runner/CLAWHUB_TOKEN" -}}
+CLAWHUB_TOKEN={{ .Data.data.value }}
+{{- else -}}
+CLAWHUB_TOKEN=
+{{- end }}
+{{- with secret "kv/data/disinto/runner/DEPLOY_KEY" -}}
+DEPLOY_KEY={{ .Data.data.value }}
+{{- else -}}
+DEPLOY_KEY=
+{{- end }}
+{{- with secret "kv/data/disinto/runner/NPM_TOKEN" -}}
+NPM_TOKEN={{ .Data.data.value }}
+{{- else -}}
+NPM_TOKEN=
+{{- end }}
+{{- with secret "kv/data/disinto/runner/DOCKER_HUB_TOKEN" -}}
+DOCKER_HUB_TOKEN={{ .Data.data.value }}
+{{- else -}}
+DOCKER_HUB_TOKEN=
+{{- end }}
+EOT
+      }
+
+      # Formula execution headroom — matches agents.hcl baseline.
+      resources {
+        cpu    = 500
+        memory = 1024
+      }
+    }
+  }
+}
diff --git a/vault/policies/service-dispatcher.hcl b/vault/policies/service-dispatcher.hcl
new file mode 100644
index 0000000..bdc7ddb
--- /dev/null
+++ b/vault/policies/service-dispatcher.hcl
@@ -0,0 +1,29 @@
+# vault/policies/service-dispatcher.hcl
+#
+# Edge dispatcher policy: needs to enumerate the runner secret namespace
+# (to check secret presence before dispatching) and read the shared
+# ops-repo credentials (token + clone URL) it uses to fetch action TOMLs.
+#
+# Scope:
+#   - kv/disinto/runner/*       — read all per-secret values + list keys
+#   - kv/disinto/shared/ops-repo/* — read the ops-repo creds bundle
+#
+# The actual ephemeral runner container created per dispatch gets the
+# narrow runner-<NAME> policies, NOT this one. This policy stays bound
+# to the long-running dispatcher only.
+
+path "kv/data/disinto/runner/*" {
+  capabilities = ["read"]
+}
+
+path "kv/metadata/disinto/runner/*" {
+  capabilities = ["list", "read"]
+}
+
+path "kv/data/disinto/shared/ops-repo" {
+  capabilities = ["read"]
+}
+
+path "kv/metadata/disinto/shared/ops-repo" {
+  capabilities = ["list", "read"]
+}
diff --git a/vault/roles.yaml b/vault/roles.yaml
index d3b1892..07e0527 100644
--- a/vault/roles.yaml
+++ b/vault/roles.yaml
@@ -121,10 +121,10 @@ roles:
     job_id:    bot-vault
 
   # ── Edge dispatcher ────────────────────────────────────────────────────────
-  - name:      dispatcher
-    policy:    dispatcher
+  - name:      service-dispatcher
+    policy:    service-dispatcher
     namespace: default
-    job_id:    dispatcher
+    job_id:    edge
 
   # ── Per-secret runner roles ────────────────────────────────────────────────
   # vault-runner (Step 5) composes runner-<NAME> policies onto each