Oikos Week 2: Service Console v0, change ledger, node relations, runbooks

Adds the shared kernel modules (oikos/policy.py, oikos/relations.py,
oikos/ledger.py) that let every surface — CLI, MCP, context-card
generator — agree on risk classification and ontology graph walks
from one implementation.

homelab CLI: `service <name> explain|health|docs|log|actions|history`
(Service Console v0), `change preflight <service>`, `node <name>
relations`. Restart and client add/remove now append change-ledger
entries (ledger/*.jsonl, committed alongside the change they record).

mcp/server.py mirrors explain/preflight/get_relations/get_change_history
as MCP tools, card-first so agent orientation is one call instead of
several search_docs/get_page round-trips.

oikos/gen-topology.py now also emits a compact context card per host
and service (oikos/cards/*.md) — identity, blast radius, safe actions +
risk class, doc pointer, recent ledger history.

runbooks/*.md: service health check, config change + deploy, client
enrollment, incident investigation, and the five node lifecycle
transitions (provision/activate/migrate/deprecate/destroy), each with
machine-readable frontmatter (risk class, inputs, verification,
docs-update checklist). Wired into HERMES.md so agents load these
instead of rediscovering topology per-task.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

HERMES.md

@@ -15,6 +15,19 @@ truth for:
 
 When in doubt, check `/opt/homelab-context/` first.
 
+## Runbooks — load, don't rediscover
+
+For the canonical workflows (service health check, config change +
+deploy, client enrollment, incident investigation, and each node
+lifecycle transition), read the matching file in `runbooks/*.md` before
+acting. Each runbook carries its risk class, required inputs, the
+verification command, and a docs-update checklist in its frontmatter —
+classify against `oikos/policy.yaml` using that risk class before any
+mutation. Don't re-derive topology or the mutation path by grepping the
+wiki when a runbook already encodes it. See [OIKOS.md](OIKOS.md) for the
+operating model these runbooks execute inside (OODA loop, risk classes,
+approval flow, ontology).
+
 ## Agent type — how this file gets loaded
 
 | Agent | Loading mechanism |

bin/homelab

@@ -37,6 +37,17 @@ INVENTORY = CONTEXT / "inventory.yaml"
 HOSTS_DIR = CONTEXT / "hosts"
 AGE_KEY = Path(os.environ.get("SOPS_AGE_KEY_FILE", "/etc/age/key.txt"))
 
+# Oikos kernel modules (policy classification, ontology relations, change
+# ledger). Optional at import time so a stale/partial checkout degrades to
+# "feature unavailable" instead of crashing every subcommand.
+sys.path.insert(0, str(CONTEXT))
+try:
+    from oikos import ledger as oikos_ledger
+    from oikos import policy as oikos_policy
+    from oikos import relations as oikos_relations
+except ImportError:
+    oikos_ledger = oikos_policy = oikos_relations = None
+
 
 # ---------- helpers ----------
 
@@ -172,6 +183,23 @@ def service_backend_host(name: str) -> str:
     return service(name)["backend"]
 
 
+def _record_change(entity: str, action: str, risk: str, *,
+                    result: str | None = None, verification: str | None = None) -> None:
+    """Append a ledger entry and push it standalone (used by mutations that
+    don't already go through push_inventory, e.g. restart)."""
+    if oikos_ledger is None:
+        return
+    oikos_ledger.append(entity, action, risk, result=result, verification=verification)
+    try:
+        subprocess.run(["git", "add", "ledger/"], check=True, cwd=CONTEXT)
+        if subprocess.run(["git", "diff", "--cached", "--quiet"], cwd=CONTEXT).returncode != 0:
+            subprocess.run(["git", "commit", "-m", f"ledger: {entity} {action} ({risk})"],
+                           check=True, cwd=CONTEXT)
+            subprocess.run(["git", "push"], check=True, cwd=CONTEXT)
+    except subprocess.CalledProcessError as e:
+        print(f"warning: could not commit/push ledger entry: {e}", file=sys.stderr)
+
+
 def push_inventory(message: str, extra_paths: list[str] | None = None) -> None:
     """Stage + commit + push inventory + regenerated hosts/ (+ any extras)."""
     subprocess.run(["python3", str(CONTEXT / "mcp" / "build_host_files.py")],
@@ -574,7 +602,12 @@ def cmd_restart(args: argparse.Namespace) -> int:
         if not confirm(f"restart systemd unit '{unit}' on {host_name}?"):
             return 1
     base = ssh_base(host_name)
-    return subprocess.call(base + ["--", "systemctl", "restart", unit])
+    rc = subprocess.call(base + ["--", "systemctl", "restart", unit])
+    risk = (oikos_policy.classify_action("service-restart", svc)
+            if oikos_policy else "reversible_low") or "reversible_low"
+    _record_change(f"service:{svc}", "restart", risk,
+                   result=("ok" if rc == 0 else f"failed rc={rc}"))
+    return rc
 
 
 def cmd_open(args: argparse.Namespace) -> int:
@@ -1103,9 +1136,11 @@ def cmd_client_add(args: argparse.Namespace) -> int:
         print("granting hermes-only secrets...")
         _grant_shared_secrets(pubkey, HERMES_SECRETS)
         commit_subject = f"client-add: {name} (finalize age_pubkey + grant shared + hermes secrets)"
+    if oikos_ledger is not None:
+        oikos_ledger.append(f"host:{name}", "client-add-finalize", "config_mutation", result="ok")
     push_inventory(
         commit_subject,
-        extra_paths=[".sops.yaml", "secrets/"],
+        extra_paths=[".sops.yaml", "secrets/", "ledger/"],
     )
     print(f"finalized {name}.")
     return 0
@@ -1167,9 +1202,11 @@ def cmd_client_remove(args: argparse.Namespace) -> int:
                 print(f"  issuance revoke failed: {e}")
 
     # 4. Commit + push (extras: .sops.yaml + secrets/ may also have changed).
+    if oikos_ledger is not None:
+        oikos_ledger.append(f"host:{name}", "client-remove", "destructive", result="ok")
     push_inventory(
         f"client-remove: {name}",
-        extra_paths=[".sops.yaml", "secrets/"],
+        extra_paths=[".sops.yaml", "secrets/", "ledger/"],
     )
 
     print()
@@ -1182,6 +1219,112 @@ def cmd_client_remove(args: argparse.Namespace) -> int:
     return 0
 
 
+def _require_oikos() -> None:
+    if oikos_policy is None or oikos_relations is None or oikos_ledger is None:
+        die("oikos/ kernel modules not importable — is this checkout up to date?")
+
+
+def cmd_service(args: argparse.Namespace) -> int:
+    """Service Console v0 — explain/health/docs/log/actions/history for one service."""
+    _require_oikos()
+    name = args.name
+    svc = service(name)  # dies with a clear message if unknown
+
+    if args.action == "explain":
+        card = CONTEXT / "oikos" / "cards" / f"service-{name}.md"
+        if not card.exists():
+            die(f"no context card for {name} — run: python3 oikos/gen-topology.py")
+        print(card.read_text())
+        return 0
+
+    if args.action == "health":
+        url = svc.get("url") or svc.get("endpoint")
+        if not url:
+            die(f"service {name} has no url/endpoint in inventory")
+        proc = subprocess.run(
+            ["curl", "-sS", "-o", "/dev/null", "-w", "%{http_code}", "--max-time", "5", url],
+            capture_output=True, text=True,
+        )
+        code = proc.stdout.strip() or "no response"
+        print(f"{name}: {url} -> {code}  (live probe — cache-first reads land Week 3)")
+        return 0 if code.startswith(("2", "3")) else 1
+
+    if args.action == "docs":
+        doc = svc.get("doc_page")
+        if not doc:
+            die(f"no doc_page recorded for {name} in inventory.yaml")
+        path = CONTEXT / doc
+        if not path.exists():
+            die(f"doc_page {doc} does not exist")
+        print(path.read_text())
+        return 0
+
+    if args.action == "log":
+        return cmd_logs(argparse.Namespace(service=name, lines=args.lines, follow=False))
+
+    if args.action == "actions":
+        for a in oikos_policy.safe_actions_for_service(name, svc):
+            print(f"{a['action']:<24} {a['risk']:<16} approval={a['approval']}")
+        return 0
+
+    if args.action == "history":
+        entries = oikos_ledger.history(f"service:{name}", limit=args.limit)
+        if not entries:
+            print(f"(no ledger entries for service:{name} yet)")
+        for e in entries:
+            print(json.dumps(e))
+        return 0
+
+    die(f"unknown service action: {args.action}")
+
+
+def cmd_change_preflight(args: argparse.Namespace) -> int:
+    """Dry-run report before mutating a service: health, risk class, approval
+    requirement, and the verification command to run after."""
+    _require_oikos()
+    name = args.service
+    svc = service(name)
+    risk = (oikos_policy.classify_action("tracked-config-edit", name)
+            if svc.get("config_repo")
+            else oikos_policy.classify_action("service-restart", name)) or "config_mutation"
+    approval = oikos_policy.approval_for(risk)
+
+    print(f"Preflight: {name}")
+    print(f"  risk class: {risk}  (approval: {approval})")
+
+    url = svc.get("url") or svc.get("endpoint")
+    if url:
+        proc = subprocess.run(
+            ["curl", "-sS", "-o", "/dev/null", "-w", "%{http_code}", "--max-time", "3", url],
+            capture_output=True, text=True,
+        )
+        print(f"  current health: {url} -> {proc.stdout.strip() or 'no response'}")
+    if svc.get("config_repo"):
+        print(f"  config repo: {svc['config_repo']}  "
+              f"(verify the backend's working tree is clean before editing)")
+    if svc.get("risk_notes"):
+        print(f"  risk notes: {svc['risk_notes']}")
+    print(f"  verification after change: "
+          + (f"curl -sf {url}" if url else f"homelab logs {name}"))
+    if approval != "none":
+        print(f"  requires operator approval before mutating ({approval})")
+    return 0
+
+
+def cmd_node_relations(args: argparse.Namespace) -> int:
+    """Walk the ontology graph both directions for a host or service name."""
+    _require_oikos()
+    results = oikos_relations.relations_for_name(args.name)
+    if not results:
+        die(f"unknown entity: {args.name}")
+    for r in results:
+        print(f"entity: {r['entity']}")
+        print(f"  impacts:          {', '.join(r['impacts']) or '(none)'}")
+        print(f"  affected by:      {', '.join(r['affected_by']) or '(none)'}")
+        print(f"  full blast radius: {', '.join(r['blast_radius']) or '(none)'}")
+    return 0
+
+
 def cmd_nuke(args: argparse.Namespace) -> int:
     name = args.name
     if not args.yes:
@@ -1554,6 +1697,24 @@ def main() -> int:
                     help="skip the pre-flight dpkg-audit gate AND proceed past snapshot failures")
     sp.set_defaults(func=cmd_apt_upgrade)
 
+    sp = sub.add_parser("service", help="Service Console v0 — explain/health/docs/log/actions/history")
+    sp.add_argument("name")
+    sp.add_argument("action", choices=["explain", "health", "docs", "log", "actions", "history"])
+    sp.add_argument("--lines", "-n", type=int, default=200, help="for 'log'")
+    sp.add_argument("--limit", type=int, default=20, help="for 'history'")
+    sp.set_defaults(func=cmd_service)
+
+    change = sub.add_parser("change", help="change/mutation workflow")
+    chsub = change.add_subparsers(dest="action", required=True)
+    ch_preflight = chsub.add_parser("preflight")
+    ch_preflight.add_argument("service")
+    ch_preflight.set_defaults(func=cmd_change_preflight)
+
+    sp = sub.add_parser("node", help="ontology queries on a host/service")
+    sp.add_argument("name")
+    sp.add_argument("action", choices=["relations"])
+    sp.set_defaults(func=cmd_node_relations)
+
     sp = sub.add_parser("nuke", help="shred /etc/age/key.txt + /opt/homelab-context on a host")
     sp.add_argument("name")
     sp.add_argument("--yes", "-y", action="store_true")

mcp/server.py

@@ -20,16 +20,27 @@ import os
 import re
 import shlex
 import subprocess
+import sys
 from functools import lru_cache
 from pathlib import Path
 from typing import Any
 
 import yaml
-from mcp.server.fastmcp import FastMCP
+from mcp.server.fastmcp import FastMCP  # noqa: E402 — must precede the sys.path
+                                         # insert below: CONTEXT_DIR contains its
+                                         # own top-level "mcp/" directory, which
+                                         # would shadow the real `mcp` package if
+                                         # inserted first.
 
 CONTEXT_DIR = Path(os.environ.get("HOMELAB_CONTEXT_DIR", "/opt/homelab-context"))
 INVENTORY = CONTEXT_DIR / "inventory.yaml"
 HOSTS_DIR = CONTEXT_DIR / "hosts"
+CARDS_DIR = CONTEXT_DIR / "oikos" / "cards"
+
+sys.path.insert(0, str(CONTEXT_DIR))
+from oikos import ledger as oikos_ledger  # noqa: E402
+from oikos import policy as oikos_policy  # noqa: E402
+from oikos import relations as oikos_relations  # noqa: E402
 # All management tools proxy through hubris (the Proxmox host) via a single
 # restricted-shell SSH connection. The wrapper at mcp/mcp-reader-shell on
 # hubris validates each command against a strict read-only allowlist.
@@ -230,6 +241,55 @@ def whoami(hostname: str) -> dict:
     return yaml.safe_load(candidate.read_text())
 
 
+@mcp.tool()
+def explain(service: str) -> str:
+    """Return the compact context card for a service: identity, blast
+    radius, safe actions + risk class, doc pointer, recent ledger history.
+    Card-first — cheaper for agent orientation than search_docs + get_page.
+    """
+    card = CARDS_DIR / f"service-{service}.md"
+    if not card.exists():
+        raise ValueError(f"no context card for {service} — has gen-topology.py run?")
+    return card.read_text()
+
+
+@mcp.tool()
+def preflight(service: str) -> dict:
+    """Dry-run report before mutating a service: risk class, approval
+    requirement, current health, config repo, and the verification command
+    to run after the change."""
+    inv_svc = inventory().get("services", {}).get(service)
+    if not inv_svc:
+        raise ValueError(f"unknown service: {service}")
+    risk = (oikos_policy.classify_action("tracked-config-edit", service)
+            if inv_svc.get("config_repo")
+            else oikos_policy.classify_action("service-restart", service)) or "config_mutation"
+    url = inv_svc.get("url") or inv_svc.get("endpoint")
+    return {
+        "service": service,
+        "risk_class": risk,
+        "approval": oikos_policy.approval_for(risk),
+        "config_repo": inv_svc.get("config_repo"),
+        "risk_notes": inv_svc.get("risk_notes"),
+        "verification": f"curl -sf {url}" if url else f"tail_log({service!r})",
+    }
+
+
+@mcp.tool()
+def get_relations(entity: str) -> list[dict]:
+    """Walk the ontology graph both directions for a host or service name:
+    what it impacts, what affects it, and its full transitive blast radius.
+    """
+    return oikos_relations.relations_for_name(entity)
+
+
+@mcp.tool()
+def get_change_history(entity: str, limit: int = 20) -> list[dict]:
+    """Ledger entries for `entity` (e.g. "service:jellyfin", "host:strong"),
+    newest first."""
+    return oikos_ledger.history(entity, limit=limit)
+
+
 @mcp.tool()
 def list_my_secrets(caller_pubkey: str) -> list[str]:
     """Return the names of secrets the caller (identified by age pubkey) can decrypt.

oikos/cards/host-apps.md

@@ -0,0 +1,21 @@
+# apps (host:apps)
+
+- kind: lxc (LXC 105)
+- state: active
+- runs-on: host:hubris
+- role: docker-apps
+- address: 192.168.8.205 (mesh: tailscale:apps)
+- mounts: /mnt/library
+- doc: containers/105-apps.md
+- secrets: enrolled (age key present)
+
+## Blast radius
+- impacts: service:artifacto, service:homelab_mcp, service:secrets_issuance
+- affected by: host:hubris, mount:/mnt/library, repo:dtoro/Artifacto, repo:dtoro/Homelab-Docs
+- full blast radius: service:artifacto, service:homelab_mcp, service:secrets_issuance
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-arriman.md

@@ -0,0 +1,20 @@
+# arriman (host:arriman)
+
+- kind: lxc (LXC 122)
+- state: active
+- runs-on: host:strong
+- role: arr-stack
+- address: 192.168.8.245 (mesh: tailscale:arr)
+- mounts: /mnt/media_local
+- doc: containers/122-arriman.md
+
+## Blast radius
+- impacts: service:arr_stack
+- affected by: host:strong, mount:/mnt/media_local
+- full blast radius: service:arr_stack
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-auth-outpost.md

@@ -0,0 +1,18 @@
+# auth-outpost (host:auth-outpost)
+
+- kind: lxc (LXC 106)
+- state: active
+- runs-on: host:hubris
+- role: authentik-gateway
+- address: 192.168.8.6
+- doc: containers/106-auth-outpost.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:hubris
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-caddy.md

@@ -0,0 +1,19 @@
+# caddy (host:caddy)
+
+- kind: lxc (LXC 121)
+- state: active
+- runs-on: host:hubris
+- role: reverse-proxy
+- address: 192.168.8.175
+- doc: containers/121-caddy.md
+
+## Blast radius
+- impacts: service:caddy
+- affected by: host:hubris, repo:dtoro/caddy-conf
+- full blast radius: service:caddy
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-dns.md

@@ -0,0 +1,19 @@
+# dns (host:dns)
+
+- kind: lxc (LXC 107)
+- state: active
+- runs-on: host:hubris
+- role: dns-server
+- address: 192.168.8.2
+- doc: containers/107-dns.md
+
+## Blast radius
+- impacts: service:dns
+- affected by: host:hubris
+- full blast radius: service:dns
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-elementsynapse.md

@@ -0,0 +1,19 @@
+# elementsynapse (host:elementsynapse)
+
+- kind: lxc (LXC 118)
+- state: active
+- runs-on: host:strong
+- role: matrix-server
+- address: 192.168.8.242
+- doc: containers/118-elementsynapse.md
+
+## Blast radius
+- impacts: service:matrix
+- affected by: host:strong
+- full blast radius: service:matrix
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-gitea.md

@@ -0,0 +1,20 @@
+# gitea (host:gitea)
+
+- kind: lxc (LXC 104)
+- state: active
+- runs-on: host:hubris
+- role: git-server
+- address: 192.168.8.121 (mesh: tailscale:gitea)
+- mounts: /mnt/library
+- doc: containers/104-gitea.md
+
+## Blast radius
+- impacts: service:gitea
+- affected by: host:hubris, mount:/mnt/library, repo:dtoro/gitea-customizations
+- full blast radius: service:gitea
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-grimmory.md

@@ -0,0 +1,20 @@
+# grimmory (host:grimmory)
+
+- kind: lxc (LXC 130)
+- state: active
+- runs-on: host:strong
+- role: book-library
+- address: 192.168.8.247
+- mounts: /mnt/media_local
+- doc: containers/130-grimmory.md
+- secrets: enrolled (age key present)
+
+## Blast radius
+- impacts: (none)
+- affected by: host:strong, mount:/mnt/media_local
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-haos.md

@@ -0,0 +1,19 @@
+# haos (host:haos)
+
+- kind: vm (VM 108)
+- state: active
+- runs-on: host:hubris
+- role: home-automation
+- address: 192.168.8.101 (mesh: tailscale:homeassistant)
+- doc: vms/108-haos.md
+
+## Blast radius
+- impacts: service:haos
+- affected by: host:hubris
+- full blast radius: service:haos
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-house.md

@@ -0,0 +1,19 @@
+# house (host:house)
+
+- kind: lxc (LXC 129)
+- state: active
+- runs-on: host:strong
+- role: family-planner
+- address: 192.168.8.244
+- doc: containers/129-house.md
+- secrets: enrolled (age key present)
+
+## Blast radius
+- impacts: (none)
+- affected by: host:strong
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-hubris.md

@@ -0,0 +1,20 @@
+# hubris (host:hubris)
+
+- kind: proxmox-host
+- state: active
+- role: hypervisor
+- address: 192.168.8.77 (mesh: netbird:proxmox-server.netbird.selfhosted)
+- mounts: /mnt/library
+- doc: hosts/hubris.md
+- secrets: enrolled (age key present)
+
+## Blast radius
+- impacts: host:apps, host:auth-outpost, host:caddy, host:dns, host:gitea, host:haos, host:mule-images, host:nextcloud, host:nfs-export, host:paperless, host:sophia, host:trmnl, host:zimaos, service:proxmox_ui
+- affected by: mount:/mnt/library
+- full blast radius: host:apps, host:auth-outpost, host:caddy, host:dns, host:gitea, host:haos, host:mule-images, host:nextcloud, host:nfs-export, host:paperless, host:sophia, host:trmnl, host:zimaos, service:artifacto, service:caddy, service:dns, service:gitea, service:haos, service:homelab_mcp, service:nextcloud, service:paperless, service:photos, service:proxmox_ui, service:secrets_issuance, service:trmnl, service:zimaos
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-jellyfin.md

@@ -0,0 +1,20 @@
+# jellyfin (host:jellyfin)
+
+- kind: lxc (LXC 101)
+- state: active
+- runs-on: host:strong
+- role: media-server
+- address: 192.168.8.246 (mesh: tailscale:jellyfin)
+- mounts: /mnt/media_local
+- doc: containers/101-jellyfin.md
+
+## Blast radius
+- impacts: service:jellyfin
+- affected by: host:strong, mount:/mnt/media_local
+- full blast radius: service:jellyfin
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-mac-mini.md

@@ -0,0 +1,17 @@
+# mac-mini (host:mac-mini)
+
+- kind: workstation
+- state: active
+- role: dev
+- address: 192.168.178.182 (mesh: netbird:mac-mini-234-17.netbird.selfhosted)
+- secrets: enrolled (age key present)
+
+## Blast radius
+- impacts: (none)
+- affected by: (none)
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-mule-images.md

@@ -0,0 +1,20 @@
+# mule-images (host:mule-images)
+
+- kind: lxc (LXC 120)
+- state: active
+- runs-on: host:hubris
+- role: photo-management
+- address: 192.168.8.136 (mesh: tailscale:muleimage)
+- mounts: /mnt/library
+- doc: containers/120-mule-images.md
+
+## Blast radius
+- impacts: service:photos
+- affected by: host:hubris, mount:/mnt/library, repo:dtoro/mule-image
+- full blast radius: service:photos
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-netbird-vps.md

@@ -0,0 +1,17 @@
+# netbird-vps (host:netbird-vps)
+
+- kind: external
+- state: active
+- role: netbird-mgmt
+- address:  (mesh: netbird:netbird-ionos.netbird.selfhosted)
+
+## Blast radius
+- impacts: service:authentik
+- affected by: (none)
+- full blast radius: service:authentik
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-nextcloud.md

@@ -0,0 +1,20 @@
+# nextcloud (host:nextcloud)
+
+- kind: lxc (LXC 114)
+- state: active
+- runs-on: host:hubris
+- role: file-sync
+- address: 192.168.8.224 (mesh: tailscale:nextcloud)
+- mounts: /mnt/library
+- doc: containers/114-nextcloud.md
+
+## Blast radius
+- impacts: service:nextcloud
+- affected by: host:hubris, mount:/mnt/library
+- full blast radius: service:nextcloud
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-nfs-export.md

@@ -0,0 +1,18 @@
+# nfs-export (host:nfs-export)
+
+- kind: lxc (LXC 102)
+- state: active
+- runs-on: host:hubris
+- role: storage-export
+- address: 192.168.8.200
+- doc: containers/102-nfs-export.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:hubris
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-paperless.md

@@ -0,0 +1,20 @@
+# paperless (host:paperless)
+
+- kind: lxc (LXC 103)
+- state: active
+- runs-on: host:hubris
+- role: document-archive
+- address: 192.168.8.130 (mesh: tailscale:paperless)
+- mounts: /mnt/library
+- doc: containers/103-paperless.md
+
+## Blast radius
+- impacts: service:paperless
+- affected by: host:hubris, mount:/mnt/library
+- full blast radius: service:paperless
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-rclone.md

@@ -0,0 +1,17 @@
+# rclone (host:rclone)
+
+- kind: lxc
+- state: active
+- role: backup
+- address:  (mesh: netbird:rclone.netbird.selfhosted)
+- secrets: enrolled (age key present)
+
+## Blast radius
+- impacts: (none)
+- affected by: (none)
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-republic-laptop.md

@@ -0,0 +1,16 @@
+# republic-laptop (host:republic-laptop)
+
+- kind: workstation
+- state: active
+- role: primary-dev
+- address:  (mesh: netbird:republic-laptop.netbird.selfhosted)
+
+## Blast radius
+- impacts: (none)
+- affected by: (none)
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-romm.md

@@ -0,0 +1,19 @@
+# romm (host:romm)
+
+- kind: lxc (LXC 134)
+- state: active
+- runs-on: host:strong
+- role: rom-manager
+- address: 192.168.8.249
+- mounts: /mnt/media_local
+- doc: containers/134-romm.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:strong, mount:/mnt/media_local
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-seanime.md

@@ -0,0 +1,19 @@
+# seanime (host:seanime)
+
+- kind: lxc (LXC 133)
+- state: active
+- runs-on: host:strong
+- role: anime-media-server
+- address: 192.168.8.248
+- mounts: /mnt/media_local/anime
+- doc: containers/133-seanime.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:strong, mount:/mnt/media_local/anime
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-sophia.md

@@ -0,0 +1,19 @@
+# sophia (host:sophia)
+
+- kind: lxc (LXC 119)
+- state: active
+- runs-on: host:hubris
+- role: workshop
+- address: 192.168.8.109 (mesh: tailscale:sophia)
+- mounts: /mnt/library
+- doc: containers/119-sophia.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:hubris, mount:/mnt/library
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-strong.md

@@ -0,0 +1,19 @@
+# strong (host:strong)
+
+- kind: proxmox-host
+- state: active
+- role: hypervisor
+- address: 192.168.178.181
+- doc: hosts/strong.md
+- secrets: enrolled (age key present)
+
+## Blast radius
+- impacts: host:arriman, host:elementsynapse, host:grimmory, host:house, host:jellyfin, host:romm, host:seanime
+- affected by: (none)
+- full blast radius: host:arriman, host:elementsynapse, host:grimmory, host:house, host:jellyfin, host:romm, host:seanime, service:arr_stack, service:jellyfin, service:matrix
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-trmnl.md

@@ -0,0 +1,19 @@
+# trmnl (host:trmnl)
+
+- kind: lxc (LXC 128)
+- state: active
+- runs-on: host:hubris
+- role: trmnl-middleware
+- address: 192.168.8.211
+- doc: containers/128-trmnl.md
+
+## Blast radius
+- impacts: service:trmnl
+- affected by: host:hubris, repo:dtoro/terminalito
+- full blast radius: service:trmnl
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/host-zimaos.md

@@ -0,0 +1,19 @@
+# zimaos (host:zimaos)
+
+- kind: vm (VM 100)
+- state: active
+- runs-on: host:hubris
+- role: nas-frontend-eval
+- address: 192.168.8.195
+- doc: vms/100-zimaos.md
+
+## Blast radius
+- impacts: service:zimaos
+- affected by: host:hubris
+- full blast radius: service:zimaos
+
+## Safe actions
+- see the services this host runs for action-level risk classes
+
+## Recent changes
+- (none yet)

oikos/cards/service-arr_stack.md

@@ -0,0 +1,17 @@
+# arr_stack (service:arr_stack)
+
+- backend: host:arriman
+- doc: containers/122-arriman.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:arriman
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-artifacto.md

@@ -0,0 +1,20 @@
+# artifacto (service:artifacto)
+
+- backend: host:apps
+- url: https://artifacto.hubris.network
+- doc: containers/105-apps.md
+- config repo: dtoro/Artifacto
+
+## Blast radius
+- impacts: (none)
+- affected by: host:apps
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+- edit-config-and-deploy — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-authentik.md

@@ -0,0 +1,19 @@
+# authentik (service:authentik)
+
+- backend: host:netbird-vps
+- url: https://auth.hubris.network
+- doc: containers/106-auth-outpost.md
+- risk notes: SSO provider — outage locks login to OIDC/forward-auth services
+
+## Blast radius
+- impacts: (none)
+- affected by: host:netbird-vps
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-caddy.md

@@ -0,0 +1,20 @@
+# caddy (service:caddy)
+
+- backend: host:caddy
+- doc: containers/121-caddy.md
+- config repo: dtoro/caddy-conf
+- risk notes: wide blast radius — every *.hubris.network route rides on it (see oikos/policy.yaml service_overrides)
+
+## Blast radius
+- impacts: (none)
+- affected by: host:caddy
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — config_mutation (approval: operator)
+- edit-config-and-deploy — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-dns.md

@@ -0,0 +1,18 @@
+# dns (service:dns)
+
+- backend: host:dns
+- doc: containers/107-dns.md
+- risk notes: LAN-wide resolver — misconfig breaks name resolution for every client
+
+## Blast radius
+- impacts: (none)
+- affected by: host:dns
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-gitea.md

@@ -0,0 +1,21 @@
+# gitea (service:gitea)
+
+- backend: host:gitea
+- url: https://git.hubris.network
+- doc: containers/104-gitea.md
+- config repo: dtoro/gitea-customizations
+- risk notes: hosts all config repos + deploy webhooks; outage blocks auto-deploy and sync
+
+## Blast radius
+- impacts: (none)
+- affected by: host:gitea
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+- edit-config-and-deploy — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-haos.md

@@ -0,0 +1,17 @@
+# haos (service:haos)
+
+- backend: host:haos
+- doc: vms/108-haos.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:haos
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-homelab_mcp.md

@@ -0,0 +1,21 @@
+# homelab_mcp (service:homelab_mcp)
+
+- backend: host:apps
+- url: https://mcp.hubris.network/mcp
+- doc: infrastructure/homelab-context.md
+- config repo: dtoro/Homelab-Docs
+- risk notes: agents' primary read surface — outage degrades every agent to grepping the clone
+
+## Blast radius
+- impacts: (none)
+- affected by: host:apps
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+- edit-config-and-deploy — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-jellyfin.md

@@ -0,0 +1,19 @@
+# jellyfin (service:jellyfin)
+
+- backend: host:jellyfin
+- url: https://media.hubris.network
+- doc: containers/101-jellyfin.md
+- risk notes: native Authentik OIDC via SSO-Auth plugin, no Caddy forward-auth gate; VAAPI transcode depends on GPU passthrough on strong
+
+## Blast radius
+- impacts: (none)
+- affected by: host:jellyfin
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-matrix.md

@@ -0,0 +1,19 @@
+# matrix (service:matrix)
+
+- backend: host:elementsynapse
+- url: https://matrix.hubris.network
+- doc: containers/118-elementsynapse.md
+- risk notes: alert/approval channel for Oikos — outage silences agent escalation
+
+## Blast radius
+- impacts: (none)
+- affected by: host:elementsynapse
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-nextcloud.md

@@ -0,0 +1,18 @@
+# nextcloud (service:nextcloud)
+
+- backend: host:nextcloud
+- url: https://cloud.hubris.network
+- doc: containers/114-nextcloud.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:nextcloud
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-paperless.md

@@ -0,0 +1,19 @@
+# paperless (service:paperless)
+
+- backend: host:paperless
+- url: https://paperless.hubris.network
+- doc: containers/103-paperless.md
+- risk notes: document archive — treat data as irreplaceable; DB operations are destructive-class
+
+## Blast radius
+- impacts: (none)
+- affected by: host:paperless
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-photos.md

@@ -0,0 +1,20 @@
+# photos (service:photos)
+
+- backend: host:mule-images
+- url: https://photos.hubris.network
+- doc: containers/120-mule-images.md
+- config repo: dtoro/mule-image
+
+## Blast radius
+- impacts: (none)
+- affected by: host:mule-images
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+- edit-config-and-deploy — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-proxmox_ui.md

@@ -0,0 +1,19 @@
+# proxmox_ui (service:proxmox_ui)
+
+- backend: host:hubris
+- url: https://proxmox.hubris.network
+- doc: hosts/hubris.md
+- risk notes: hypervisor UI — changes here affect every guest on the node
+
+## Blast radius
+- impacts: (none)
+- affected by: host:hubris
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/cards/service-secrets_issuance.md

@@ -0,0 +1,21 @@
+# secrets_issuance (service:secrets_issuance)
+
+- backend: host:apps
+- url: https://secrets.hubris.network/issue
+- doc: operations/agent-enrollment.md
+- config repo: dtoro/Homelab-Docs
+- risk notes: identity issuance — any change is security-sensitive; key operations are destructive-class
+
+## Blast radius
+- impacts: (none)
+- affected by: host:apps
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+- edit-config-and-deploy — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-trmnl.md

@@ -0,0 +1,20 @@
+# trmnl (service:trmnl)
+
+- backend: host:trmnl
+- url: https://trmnl.hubris.network
+- doc: containers/128-trmnl.md
+- config repo: dtoro/terminalito
+
+## Blast radius
+- impacts: (none)
+- affected by: host:trmnl
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+- edit-config-and-deploy — config_mutation (approval: operator)
+
+## Recent changes
+- (none yet)

oikos/cards/service-zimaos.md

@@ -0,0 +1,18 @@
+# zimaos (service:zimaos)
+
+- backend: host:zimaos
+- url: https://zimaos.hubris.network
+- doc: vms/100-zimaos.md
+
+## Blast radius
+- impacts: (none)
+- affected by: host:zimaos
+
+## Safe actions
+- health-check — read_only (approval: none)
+- view-logs — read_only (approval: none)
+- view-docs — read_only (approval: none)
+- restart — reversible_low (approval: none)
+
+## Recent changes
+- (none yet)

oikos/gen-topology.py

@@ -1,18 +1,25 @@
 #!/usr/bin/env python3
 """
-Generate infrastructure/topology.md (Mermaid views) from inventory.yaml.
+Generate infrastructure/topology.md (Mermaid views) and per-entity context
+cards from inventory.yaml.
 
 Views:
   1. Compute & ingress — hypervisors → guests → services → public URLs
   2. Storage — mounts and pools per guest
 
+Context cards (oikos/cards/<name>.md): one compact (~30-line) file per
+host and service — identity, ontology edges, safe actions + risk class,
+doc pointer, recent ledger history. This is the token-efficiency layer:
+an agent orienting on an entity reads one card instead of several
+search_docs/get_page round-trips.
+
 Run from the repo root:
-    python3 oikos/gen-topology.py            # writes infrastructure/topology.md
+    python3 oikos/gen-topology.py            # writes topology.md + cards/
     python3 oikos/gen-topology.py --check    # exit 1 if output would change
 
 Wired into the same regeneration path as mcp/build_host_files.py so the
-diagrams never drift from inventory. Edges follow oikos/ontology.yaml
-(hosts, provides, routes-to, mounts, stores-on).
+diagrams and cards never drift from inventory. Edges follow
+oikos/ontology.yaml (hosts, provides, routes-to, mounts, stores-on).
 """
 
 from __future__ import annotations
@@ -28,8 +35,14 @@ except ImportError:  # pragma: no cover
     sys.exit(2)
 
 REPO = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(REPO))
+from oikos import ledger as oikos_ledger  # noqa: E402
+from oikos import policy as oikos_policy  # noqa: E402
+from oikos import relations as oikos_relations  # noqa: E402
+
 INVENTORY = REPO / "inventory.yaml"
 OUTPUT = REPO / "infrastructure" / "topology.md"
+CARDS_DIR = REPO / "oikos" / "cards"
 
 BANNER = (
     "<!-- Generated by oikos/gen-topology.py from inventory.yaml. -->\n"
@@ -128,6 +141,125 @@ def archaeology_table(inv: dict) -> list[str]:
     return lines
 
 
+def _host_card(name: str, entry: dict, inv: dict) -> str:
+    lines = [f"# {name} (host:{name})\n"]
+    tag = "LXC" if entry.get("kind") == "lxc" else "VM" if entry.get("kind") == "vm" else entry.get("kind", "")
+    pve = entry.get("pve_id")
+    lines.append(f"- kind: {entry.get('kind', '?')}" + (f" ({tag} {pve})" if pve else ""))
+    lines.append(f"- state: {entry.get('state', 'active')}")
+    if entry.get("host"):
+        lines.append(f"- runs-on: host:{entry['host']}")
+    if entry.get("role"):
+        lines.append(f"- role: {entry['role']}")
+    addr = entry.get("lan_ip", "")
+    mesh = entry.get("mesh", {})
+    mesh_bits = []
+    for m, v in mesh.items():
+        if isinstance(v, dict) and (v.get("ip") or v.get("fqdn")):
+            mesh_bits.append(f"{m}:{v.get('fqdn') or v.get('ip')}")
+    if addr or mesh_bits:
+        lines.append(f"- address: {addr}" + (f" (mesh: {', '.join(mesh_bits)})" if mesh_bits else ""))
+    if entry.get("mounts"):
+        lines.append(f"- mounts: {', '.join(entry['mounts'])}")
+    doc = None
+    if entry.get("kind") == "lxc" and pve:
+        cand = REPO / "containers" / f"{pve}-{name}.md"
+        if cand.exists():
+            doc = str(cand.relative_to(REPO))
+    elif entry.get("kind") == "vm" and pve:
+        cand = REPO / "vms" / f"{pve}-{name}.md"
+        if cand.exists():
+            doc = str(cand.relative_to(REPO))
+    elif entry.get("kind") == "proxmox-host":
+        cand = REPO / "hosts" / f"{name}.md"
+        if cand.exists():
+            doc = str(cand.relative_to(REPO))
+    if doc:
+        lines.append(f"- doc: {doc}")
+    if entry.get("age_pubkey"):
+        lines.append("- secrets: enrolled (age key present)")
+
+    rel = oikos_relations.relations(f"host:{name}", inv)
+    lines.append("\n## Blast radius")
+    lines.append(f"- impacts: {', '.join(rel['impacts']) or '(none)'}")
+    lines.append(f"- affected by: {', '.join(rel['affected_by']) or '(none)'}")
+    if rel["blast_radius"]:
+        lines.append(f"- full blast radius: {', '.join(rel['blast_radius'])}")
+
+    lines.append("\n## Safe actions")
+    lines.append("- see the services this host runs for action-level risk classes")
+
+    hist = oikos_ledger.history(f"host:{name}", limit=5)
+    lines.append("\n## Recent changes")
+    if hist:
+        for h in hist:
+            lines.append(f"- {h.get('ts', '?')} {h.get('action', '?')} ({h.get('risk', '?')}) — {h.get('result', '?')}")
+    else:
+        lines.append("- (none yet)")
+    return "\n".join(lines) + "\n"
+
+
+def _service_card(name: str, entry: dict, inv: dict) -> str:
+    lines = [f"# {name} (service:{name})\n"]
+    if entry.get("backend"):
+        lines.append(f"- backend: host:{entry['backend']}")
+    url = entry.get("url") or entry.get("endpoint")
+    if url:
+        lines.append(f"- url: {url}")
+    if entry.get("doc_page"):
+        lines.append(f"- doc: {entry['doc_page']}")
+    if entry.get("config_repo"):
+        lines.append(f"- config repo: {entry['config_repo']}")
+    if entry.get("risk_notes"):
+        lines.append(f"- risk notes: {entry['risk_notes']}")
+
+    rel = oikos_relations.relations(f"service:{name}", inv)
+    lines.append("\n## Blast radius")
+    lines.append(f"- impacts: {', '.join(rel['impacts']) or '(none)'}")
+    lines.append(f"- affected by: {', '.join(rel['affected_by']) or '(none)'}")
+
+    lines.append("\n## Safe actions")
+    for a in oikos_policy.safe_actions_for_service(name, entry):
+        lines.append(f"- {a['action']} — {a['risk']} (approval: {a['approval']})")
+
+    hist = oikos_ledger.history(f"service:{name}", limit=5)
+    lines.append("\n## Recent changes")
+    if hist:
+        for h in hist:
+            lines.append(f"- {h.get('ts', '?')} {h.get('action', '?')} ({h.get('risk', '?')}) — {h.get('result', '?')}")
+    else:
+        lines.append("- (none yet)")
+    return "\n".join(lines) + "\n"
+
+
+def generate_cards(inv: dict) -> dict[Path, str]:
+    desired: dict[Path, str] = {}
+    for name, entry in inv.get("hosts", {}).items():
+        desired[CARDS_DIR / f"host-{name}.md"] = _host_card(name, entry, inv)
+    for name, entry in inv.get("services", {}).items():
+        if isinstance(entry, dict):
+            desired[CARDS_DIR / f"service-{name}.md"] = _service_card(name, entry, inv)
+    return desired
+
+
+def write_cards(inv: dict, check: bool = False) -> int:
+    CARDS_DIR.mkdir(parents=True, exist_ok=True)
+    desired = generate_cards(inv)
+    diff_count = 0
+    for path, content in desired.items():
+        existing = path.read_text() if path.exists() else ""
+        if existing != content:
+            diff_count += 1
+            if not check:
+                path.write_text(content)
+    for existing_path in CARDS_DIR.glob("*.md"):
+        if existing_path not in desired:
+            diff_count += 1
+            if not check:
+                existing_path.unlink()
+    return diff_count
+
+
 def render(inv: dict) -> str:
     hosts = inv.get("hosts", {})
     services = inv.get("services", {})
@@ -164,13 +296,21 @@ def main() -> int:
     inv = yaml.safe_load(INVENTORY.read_text())
     content = render(inv)
     existing = OUTPUT.read_text() if OUTPUT.exists() else ""
-    if existing == content:
-        return 0
+    topology_changed = existing != content
+    card_diffs = write_cards(inv, check=args.check)
+
     if args.check:
-        print(f"{OUTPUT.relative_to(REPO)} would change", file=sys.stderr)
-        return 1
-    OUTPUT.write_text(content)
-    print(f"wrote {OUTPUT.relative_to(REPO)}")
+        if topology_changed:
+            print(f"{OUTPUT.relative_to(REPO)} would change", file=sys.stderr)
+        if card_diffs:
+            print(f"{card_diffs} card(s) in oikos/cards/ would change", file=sys.stderr)
+        return 1 if (topology_changed or card_diffs) else 0
+
+    if topology_changed:
+        OUTPUT.write_text(content)
+        print(f"wrote {OUTPUT.relative_to(REPO)}")
+    if card_diffs:
+        print(f"wrote/updated {card_diffs} card(s) in oikos/cards/")
     return 0
 
 

oikos/ledger.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+"""oikos/ledger.py — append-only change ledger.
+
+Every mutation an agent or operator performs (reversible_low and above,
+per oikos/policy.yaml) gets one JSON line in ledger/<YYYY-MM>.jsonl:
+timestamp, acting agent identity, entity, action, risk class, approval
+reference, verification result. Append-only, committed like any tracked
+file — never edited or reordered in place.
+
+CLI:
+    python3 oikos/ledger.py append <entity> <action> <risk> [--verification ...] [--result ...]
+    python3 oikos/ledger.py history <entity> [--limit N]
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import socket
+import sys
+from datetime import datetime, timezone
+from pathlib import Path
+
+REPO = Path(__file__).resolve().parent.parent
+LEDGER_DIR = REPO / "ledger"
+
+
+def _agent_identity() -> str:
+    """Best-effort identity for the acting agent. HOMELAB_AGENT_ID lets
+    approval-engine callers stamp the real requester; falls back to the
+    local hostname."""
+    return os.environ.get("HOMELAB_AGENT_ID") or socket.gethostname().split(".")[0]
+
+
+def append(entity: str, action: str, risk: str, *, verification: str | None = None,
+           result: str | None = None, approval_ref: str | None = None,
+           agent: str | None = None, notes: str | None = None) -> dict:
+    """Append one change entry. Returns the recorded dict (None fields dropped)."""
+    entry = {
+        "ts": datetime.now(timezone.utc).isoformat(timespec="seconds"),
+        "agent": agent or _agent_identity(),
+        "entity": entity,
+        "action": action,
+        "risk": risk,
+        "approval_ref": approval_ref,
+        "verification": verification,
+        "result": result,
+        "notes": notes,
+    }
+    entry = {k: v for k, v in entry.items() if v is not None}
+    LEDGER_DIR.mkdir(exist_ok=True)
+    month = datetime.now(timezone.utc).strftime("%Y-%m")
+    path = LEDGER_DIR / f"{month}.jsonl"
+    with path.open("a") as f:
+        f.write(json.dumps(entry, sort_keys=False) + "\n")
+    return entry
+
+
+def history(entity: str, limit: int = 20) -> list[dict]:
+    """Most recent `limit` ledger entries for `entity`, newest first."""
+    entries: list[dict] = []
+    if not LEDGER_DIR.exists():
+        return entries
+    for path in sorted(LEDGER_DIR.glob("*.jsonl")):
+        for line in path.read_text().splitlines():
+            if not line.strip():
+                continue
+            try:
+                e = json.loads(line)
+            except json.JSONDecodeError:
+                continue
+            if e.get("entity") == entity:
+                entries.append(e)
+    entries.sort(key=lambda e: e.get("ts", ""), reverse=True)
+    return entries[:limit]
+
+
+def main() -> int:
+    import argparse
+    p = argparse.ArgumentParser(description="oikos change ledger")
+    sub = p.add_subparsers(dest="cmd", required=True)
+
+    sp = sub.add_parser("append")
+    sp.add_argument("entity")
+    sp.add_argument("action")
+    sp.add_argument("risk")
+    sp.add_argument("--verification")
+    sp.add_argument("--result")
+    sp.add_argument("--approval-ref")
+    sp.add_argument("--notes")
+
+    sh = sub.add_parser("history")
+    sh.add_argument("entity")
+    sh.add_argument("--limit", type=int, default=20)
+
+    args = p.parse_args()
+    if args.cmd == "append":
+        entry = append(args.entity, args.action, args.risk,
+                       verification=args.verification, result=args.result,
+                       approval_ref=args.approval_ref, notes=args.notes)
+        print(json.dumps(entry, indent=2))
+    elif args.cmd == "history":
+        for e in history(args.entity, args.limit):
+            print(json.dumps(e))
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

oikos/policy.py

@@ -0,0 +1,58 @@
+"""oikos/policy.py — load oikos/policy.yaml and classify actions.
+
+Shared by bin/homelab, mcp/server.py, and oikos/gen-topology.py so every
+surface agrees on risk classes. See OIKOS.md for the operating model.
+"""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import yaml
+
+REPO = Path(__file__).resolve().parent.parent
+POLICY_FILE = REPO / "oikos" / "policy.yaml"
+
+
+def load() -> dict:
+    return yaml.safe_load(POLICY_FILE.read_text())
+
+
+def classify_command(cmd: str) -> str | None:
+    """Risk class for a `homelab <cmd>` subcommand."""
+    return load().get("commands", {}).get(cmd)
+
+
+def classify_action(action: str, service: str | None = None) -> str | None:
+    """Risk class for a generic action, honoring per-service overrides."""
+    pol = load()
+    if service:
+        override = pol.get("service_overrides", {}).get(service, {}).get(action)
+        if override:
+            return override
+    return pol.get("actions", {}).get(action)
+
+
+def approval_for(risk: str) -> str:
+    return load().get("risk_classes", {}).get(risk, {}).get("approval", "unknown")
+
+
+def safe_actions_for_service(name: str, svc_entry: dict) -> list[dict]:
+    """Actions an agent can propose for this service, each tagged with its
+    risk class and whether operator approval is required. Derived from what
+    the service entry actually declares — no action is offered that the
+    service doesn't support.
+    """
+    out = [
+        {"action": "health-check", "risk": "read_only", "approval": "none"},
+        {"action": "view-logs", "risk": "read_only", "approval": "none"},
+        {"action": "view-docs", "risk": "read_only", "approval": "none"},
+    ]
+    if svc_entry.get("backend"):
+        risk = classify_action("service-restart", name)
+        out.append({"action": "restart", "risk": risk, "approval": approval_for(risk)})
+    if svc_entry.get("config_repo"):
+        risk = classify_action("tracked-config-edit", name)
+        out.append({"action": "edit-config-and-deploy", "risk": risk,
+                    "approval": approval_for(risk)})
+    return out

oikos/relations.py

@@ -0,0 +1,131 @@
+"""oikos/relations.py — walk the ontology graph derived from inventory.yaml.
+
+Wires up the subset of oikos/ontology.yaml relationships that are already
+structured data today: hosts, mounts, provides, configured-by, depends-on.
+Everything else in the ontology (physical, external, identity domains) is
+documented but thin — not yet backed by inventory fields, so it doesn't
+appear in the graph until those fields are populated.
+
+Entities are namespaced ("host:name", "service:name", "repo:name",
+"mount:path") because host and service names collide in this inventory
+(e.g. "jellyfin" is both a service and its own LXC).
+
+Impact polarity: build_impacts() returns edges in the direction
+"if SOURCE fails/disappears, TARGET is affected" — this is not the same
+direction as how the fact is stored in inventory (e.g. a mount is stored
+as guest -> pool, but if the POOL fails the GUEST is impacted, so the
+impact edge runs pool -> guest).
+"""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import yaml
+
+REPO = Path(__file__).resolve().parent.parent
+INVENTORY = REPO / "inventory.yaml"
+
+
+def _hid(name: str) -> str:
+    return f"host:{name}"
+
+
+def _sid(name: str) -> str:
+    return f"service:{name}"
+
+
+def _rid(name: str) -> str:
+    return f"repo:{name}"
+
+
+def _mid(name: str) -> str:
+    return f"mount:{name}"
+
+
+def load_inventory() -> dict:
+    return yaml.safe_load(INVENTORY.read_text())
+
+
+def resolve(entity: str, inv: dict | None = None) -> list[str]:
+    """Map a bare name (as typed on the CLI) to every namespaced id it
+    could refer to. A bare name may match a host AND a service."""
+    inv = inv or load_inventory()
+    if ":" in entity:
+        return [entity]
+    ids = []
+    if entity in inv.get("hosts", {}):
+        ids.append(_hid(entity))
+    if entity in inv.get("services", {}):
+        ids.append(_sid(entity))
+    if not ids:
+        ids.append(entity)
+    return ids
+
+
+def build_impacts(inv: dict | None = None) -> dict[str, set[str]]:
+    inv = inv or load_inventory()
+    hosts = inv.get("hosts", {})
+    services = inv.get("services", {})
+    impacts: dict[str, set[str]] = {}
+
+    def add(source: str, target: str) -> None:
+        impacts.setdefault(source, set()).add(target)
+
+    for name, e in hosts.items():
+        hid = _hid(name)
+        parent = e.get("host")
+        if parent:
+            add(_hid(parent), hid)                 # host failing -> guest impacted
+        for mount in e.get("mounts", []):
+            add(_mid(mount), hid)                   # pool failing -> mounter impacted
+        for dep in e.get("depends_on", []) or []:
+            add(_hid(dep), hid)                     # dependency failing -> dependent impacted
+
+    for svc, e in services.items():
+        if not isinstance(e, dict):
+            continue
+        sid = _sid(svc)
+        backend = e.get("backend")
+        if backend and backend in hosts:
+            add(_hid(backend), sid)                 # backend failing -> service impacted
+            config_repo = e.get("config_repo")
+            if config_repo:
+                add(_rid(config_repo), _hid(backend))  # bad config -> backend impacted
+
+    return impacts
+
+
+def blast_radius(entity_id: str, inv: dict | None = None) -> list[str]:
+    """Transitive closure: every entity affected if `entity_id` fails."""
+    impacts = build_impacts(inv)
+    seen: set[str] = set()
+    stack = [entity_id]
+    while stack:
+        cur = stack.pop()
+        for nxt in impacts.get(cur, ()):
+            if nxt not in seen:
+                seen.add(nxt)
+                stack.append(nxt)
+    return sorted(seen)
+
+
+def relations(entity_id: str, inv: dict | None = None) -> dict:
+    """One entity's direct edges plus its full transitive blast radius."""
+    impacts = build_impacts(inv)
+    impacts_on = sorted(impacts.get(entity_id, ()))
+    affected_by = sorted(src for src, targets in impacts.items() if entity_id in targets)
+    return {
+        "entity": entity_id,
+        "impacts": impacts_on,
+        "affected_by": affected_by,
+        "blast_radius": blast_radius(entity_id, inv),
+    }
+
+
+def relations_for_name(name: str, inv: dict | None = None) -> list[dict]:
+    """CLI/MCP entry point: resolve a bare name and report relations for
+    every matching entity id (usually one; two if host and service share
+    a name)."""
+    inv = inv or load_inventory()
+    return [relations(eid, inv) for eid in resolve(name, inv)]

runbooks/client-enrollment.md

@@ -0,0 +1,35 @@
+---
+name: client-enrollment
+risk_class: config_mutation
+inputs: [hostname, kind, role]
+verification: "homelab doctor (on the new client)"
+docs_update_checklist: [hosts_narrative_page_if_lxc_or_vm]
+---
+
+# Client enrollment
+
+Goal: bring a new host (workstation, LXC, VM) into the mesh, inventory,
+and secrets model. This wraps the existing `homelab client add` flow —
+see [operations/agent-enrollment.md](../operations/agent-enrollment.md)
+for the full walkthrough; this runbook is the risk/lifecycle framing.
+
+1. On any enrolled client: `homelab client add <hostname>` — appends a
+   `hosts.<name>:` block to `inventory.yaml` (lifecycle `state: planned`
+   → `provisioning`, per [oikos/ontology.yaml](../oikos/ontology.yaml)),
+   commits + pushes.
+2. Join the new host to Netbird (out-of-band, console or setup key).
+3. On the new host: run `bootstrap.sh` (add `--with-hermes` to also
+   enroll the Hermes agent). This provisions `/etc/age/key.txt`, the
+   sync timer, and prints an age pubkey.
+4. Back on an enrolled client: `homelab client add <hostname>
+   --finalize-pubkey <age1...>` — sets `age_pubkey`, grants shared
+   secrets, re-keys SOPS, commits + pushes. This is the
+   `provisioning → active` transition.
+5. Verify: `homelab doctor` on the new client should show all checks
+   green (clone, sync timer, age key, CLI symlink, MCP reachable).
+
+Docs-update checklist: if the new host is an LXC/VM, add its narrative
+page under `containers/` or `vms/` and set `doc_page` in its inventory
+entry (host-level cards don't have a `doc_page` field yet — services do;
+narrative pages are still found via the generated `see_also` in
+`hosts/<name>.yaml`).

runbooks/config-change-deploy.md

@@ -0,0 +1,34 @@
+---
+name: config-change-deploy
+risk_class: config_mutation
+inputs: [service_name, change_description]
+verification: "curl -sf <service_url> (or homelab service <name> health)"
+docs_update_checklist: [doc_page, changelog]
+---
+
+# Config change + deploy
+
+Goal: change a tracked config repo (Caddy, Gitea customizations, an app's
+own repo) and get it live, safely.
+
+1. `homelab change preflight <service>` — current health, the service's
+   `config_repo`, its risk class, and the verification command to run
+   after. If risk class requires approval (`config_mutation` or
+   `destructive`), stop and get operator sign-off before editing — see
+   `oikos/policy.yaml`.
+2. Clone/pull the `config_repo` (never edit the backend's working tree
+   directly — tracked configs change by commit + push, per
+   [OIKOS.md](../OIKOS.md) conventions).
+3. Make the change, commit, push to `main`.
+4. The Gitea webhook fires the deploy pipeline for that repo (see
+   [infrastructure/auto-deploy.md](../infrastructure/auto-deploy.md) for
+   the exact receiver/reload for this service).
+5. Run the preflight's verification command. If it fails, check
+   `homelab service <name> log` for the reload/restart error.
+6. Record the change: once `oikos/ledger.py` is wired into deploy tooling
+   (Week 3), this is automatic; until then, note the change and outcome
+   in the relevant investigation/plan doc.
+
+Docs-update checklist: update the service's `doc_page` if the change
+alters its behavior, ingress route, or ownership; add a changelog entry
+if the page has one.

runbooks/incident-investigation.md

@@ -0,0 +1,34 @@
+---
+name: incident-investigation
+risk_class: read_only
+inputs: [symptom, affected_entity]
+verification: "n/a — investigation produces a written record, not a state change"
+docs_update_checklist: [investigations_entry]
+---
+
+# Incident investigation
+
+Goal: understand what broke and why, before touching anything.
+
+1. `homelab service <name> explain` (or `homelab node <name> relations`
+   if the affected entity is a host) — get the blast radius and doc
+   pointer first. Don't start pulling logs blind.
+2. `homelab service <name> health` + `homelab service <name> log` (or
+   MCP `get_service_status` / `tail_log`) for the affected service.
+3. Walk the blast radius: is a shared dependency down (`caddy`, `dns`,
+   `authentik`, or the backend host itself)? `homelab node <name>
+   relations` shows "affected by" — check those first.
+4. `homelab apt-audit` if the symptom looks like a dpkg/upgrade
+   interaction.
+5. Check the change ledger for recent mutations to the affected entity
+   or anything upstream of it: `homelab service <name> history` (once
+   populated) or grep `ledger/*.jsonl`.
+6. Write findings to a new `investigations/<date>-<slug>.md` — symptom,
+   timeline, root cause, fix applied, prevention. This is the durable
+   record; don't rely on chat history.
+
+Docs-update checklist: always create the investigation entry. If the
+root cause was stale/wrong inventory data (a `doc_page`, `config_repo`,
+or `backend` that didn't match reality — this happened during Week 1
+kernel work, see the `authentik` backend fix), correct `inventory.yaml`
+in the same session.

runbooks/lifecycle-activate-node.md

@@ -0,0 +1,36 @@
+---
+name: lifecycle-activate-node
+risk_class: config_mutation
+inputs: [node_name]
+verification: "homelab service <name> health (if it hosts a service); homelab doctor (if it's a client)"
+docs_update_checklist: [doc_page_complete]
+transition: "provisioning -> active"
+---
+
+# Lifecycle: activate a node
+
+Per [oikos/ontology.yaml](../oikos/ontology.yaml). Requires: age key
+enrolled if it needs secrets, mesh joined if it needs off-LAN reach,
+ingress live if public, health check answering, doc page complete,
+ledger entry.
+
+1. If the node is a `homelab` client: finish enrollment per
+   [client-enrollment.md](client-enrollment.md) (`--finalize-pubkey`,
+   mesh join, `homelab doctor` green).
+2. If it hosts a public service: add the `services:` entry in
+   `inventory.yaml` (backend, url, doc_page, config_repo, risk_notes —
+   see the Week-1 service contract fields) and wire the Caddy route in
+   `dtoro/caddy-conf`.
+3. Confirm the health check answers: `homelab service <name> health` or
+   a direct `curl`.
+4. Flip `state: provisioning` → `state: active` (or delete the `state:`
+   field — `active` is the default) in `inventory.yaml`.
+5. Complete the doc page (stub → full narrative: role, specs, how it's
+   configured, dependencies).
+6. Record the activation: `oikos/ledger.py append host:<name> activate
+   config_mutation --result ok` (or let the CLI wrapper do this once
+   Week 3's runbook automation lands).
+
+Regenerate derived data: `python3 mcp/build_host_files.py && python3
+oikos/gen-topology.py` so `hosts/<name>.yaml`, the topology diagram, and
+the context card all reflect the new state.

runbooks/lifecycle-deprecate-node.md

@@ -0,0 +1,35 @@
+---
+name: lifecycle-deprecate-node
+risk_class: config_mutation
+inputs: [node_name, replacement_node_or_reason]
+verification: "homelab node <name> relations — 'affected by' must be empty before completing"
+docs_update_checklist: [doc_page_deprecation_note]
+transition: "active -> deprecated"
+---
+
+# Lifecycle: deprecate a node
+
+Per [oikos/ontology.yaml](../oikos/ontology.yaml): a node keeps running
+but takes no new dependents. **Completion condition: zero remaining
+inbound `depends-on`/`routes-to` edges** — this is a hard gate, not a
+suggestion; `oikos/policy.yaml` `lifecycle_overrides.deprecated.refuse`
+lists `new-inbound-edges` as refused going forward.
+
+1. Set `state: deprecated` on the node.
+2. `homelab node <name> relations` — read `affected_by`. Every entry
+   there is something still relying on this node.
+3. Migrate or retire each dependent one at a time (point its `backend`/
+   `config_repo`/ingress route elsewhere, or deprecate it too if it's
+   being retired alongside).
+4. Re-run `homelab node <name> relations` after each dependent is moved.
+   The transition to `destroyed` is only safe once `affected_by` is
+   empty — check this every time, don't assume from memory.
+5. Note the deprecation on the doc page: reason, replacement (if any),
+   date.
+
+If step 2 shows dependents you didn't expect, stop and investigate
+before proceeding — that's exactly the kind of drift the Week-3 detector
+will catch automatically, but until then this manual check is the gate.
+
+Next (once `affected_by` is empty):
+[lifecycle-destroy-node.md](lifecycle-destroy-node.md).

runbooks/lifecycle-destroy-node.md

@@ -0,0 +1,42 @@
+---
+name: lifecycle-destroy-node
+risk_class: destructive
+inputs: [node_name]
+verification: "homelab node <name> relations returns unknown-entity; pct list on the backend no longer shows it"
+docs_update_checklist: [archaeology_entry, containers_index_update]
+transition: "deprecated -> destroyed"
+---
+
+# Lifecycle: destroy a node
+
+**Destructive.** Requires operator approval + typed confirmation phrase
+per `oikos/policy.yaml`. Requires (ontology): backups verified, secrets
+recipients removed + re-keyed, ingress/DNS removed, archaeology entry,
+ledger entry.
+
+1. Confirm the node is `deprecated` with zero `affected_by` edges
+   (`homelab node <name> relations`) — do not skip this even if the
+   deprecation runbook was followed recently; state can drift.
+2. If it's an enrolled client: `homelab client remove <name>` — revokes
+   the age key, re-keys SOPS, removes the inventory entry. This is
+   already destructive-class and confirmed in the CLI.
+3. Remove any ingress route (Caddy config repo) and DNS record still
+   pointing at it.
+4. Verify backups of anything on it are retained per policy before the
+   disk goes away (see `backs-up-to`).
+5. Destroy the LXC/VM (`pct destroy` / `qm destroy`).
+6. Move the `hosts.<name>:` block (if any inventory remnant survives
+   `client remove`, e.g. infra-only LXCs with no age key) into
+   inventory.yaml's `archaeology:` section: `pve_id`, `destroyed` date,
+   `reason`. Add a row to `containers/index.md` "Recently destroyed"
+   table (kept for human-readable browsing alongside the structured
+   data).
+7. `oikos/ledger.py append host:<name> destroy destructive --result ok`.
+8. Regenerate: `python3 mcp/build_host_files.py && python3
+   oikos/gen-topology.py` — the node drops out of `hosts/*.yaml` and
+   appears in the topology doc's archaeology table.
+
+If the destroy fails partway (e.g. secrets revoked but pct destroy
+errors), do not re-run step 2 — `client remove` is not idempotent
+against a second revocation attempt on the issuance server. Finish the
+remaining steps manually and note the partial state in an investigation.

runbooks/lifecycle-migrate-node.md

@@ -0,0 +1,39 @@
+---
+name: lifecycle-migrate-node
+risk_class: config_mutation
+inputs: [node_name, source_host, target_host]
+verification: "homelab node <name> relations (re-check blast radius); homelab service <svc> health for every hosted service"
+docs_update_checklist: [doc_page_migration_note, inventory_host_and_lan_ip]
+transition: "active -> migrating -> active"
+---
+
+# Lifecycle: migrate a node
+
+Modeled on the strong Phase 1+2 migration
+([plans/2026-06-03_110000-library-ssd-migration-to-ludo-mini.md](../plans/2026-06-03_110000-library-ssd-migration-to-ludo-mini.md)).
+Requires (ontology): preflight + backup-verified before migrating;
+post-verify + Caddy backends checked + mounts checked + docs updated
+before returning to `active`.
+
+1. `homelab change preflight <every service the node hosts>` — capture
+   current health as a baseline.
+2. Verify backups are current for anything with data at rest on the
+   node (see `backs-up-to` edges once populated).
+3. Set `state: migrating` in `inventory.yaml`.
+4. Perform the migration (pct/qm move, or create-on-target +
+   data-copy + destroy-source, per the specific case).
+5. Update `inventory.yaml`: new `host:`, `lan_ip`, `mesh` addresses for
+   the node; update every `services:` entry whose `backend` pointed at
+   it if the backend name itself changes (usually it doesn't — only the
+   `host:`/`lan_ip` on the guest entry moves).
+6. Post-verify: re-run the Week-1 drift check by hand — confirm Caddy's
+   backend IP for each affected service matches the new `lan_ip`
+   (automatic in Week 3's drift detector), confirm mounts still resolve.
+7. `homelab service <name> health` for every service the node hosts.
+8. Set `state: active`. Add a migration note to the node's doc page
+   (old host/IP → new, date, phase reference) — this repo's convention
+   for every past migration (see `containers/101-jellyfin.md`,
+   `containers/129-house.md`).
+
+Regenerate: `python3 mcp/build_host_files.py && python3
+oikos/gen-topology.py`.

runbooks/lifecycle-provision-node.md

@@ -0,0 +1,33 @@
+---
+name: lifecycle-provision-node
+risk_class: config_mutation
+inputs: [node_name, kind, storage_pool]
+verification: "grep 'state: provisioning' hosts/<name>.yaml"
+docs_update_checklist: [doc_page_stub]
+transition: "planned -> provisioning"
+---
+
+# Lifecycle: provision a node
+
+Per [oikos/ontology.yaml](../oikos/ontology.yaml) `lifecycle.transitions`.
+Policy note: `provisioning` nodes get a lifecycle override —
+`config_mutation` actions downgrade to `reversible_low` because nothing
+depends on the node yet (see `oikos/policy.yaml` `lifecycle_overrides`).
+
+Requires (from ontology): inventory entry, IP reserved, storage pool
+chosen, doc page stub.
+
+1. Create the LXC/VM on its target Proxmox host (`pct create` /
+   `qm create`), choosing the storage pool deliberately — record it as
+   the `storage:` field once populated (Week 1 schema; not yet backfilled
+   for existing nodes).
+2. Add the inventory entry: `homelab client add <name>` for anything that
+   will run the `homelab` CLI, or a direct `hosts.<name>:` block with
+   `state: provisioning`, `kind`, `host`, `pve_id`, `lan_ip` for
+   infra-only LXCs that won't self-enroll.
+3. Stub the doc page (`containers/<pve_id>-<name>.md` or
+   `vms/<pve_id>-<name>.md`) — even a one-line "provisioning, see plan X"
+   is enough to satisfy the transition requirement.
+4. Reserve the IP in DNS/DHCP notes if it's a fixed LAN address.
+
+Next: [lifecycle-activate-node.md](lifecycle-activate-node.md).

runbooks/service-health-check.md

@@ -0,0 +1,30 @@
+---
+name: service-health-check
+risk_class: read_only
+inputs: [service_name]
+verification: "homelab service <name> health"
+docs_update_checklist: []
+---
+
+# Service health check
+
+Goal: determine whether a service is actually healthy, without ad-hoc SSH.
+
+1. `homelab service <name> explain` — read the context card: backend,
+   blast radius, doc pointer, risk notes.
+2. `homelab service <name> health` — live health probe (HTTP code against
+   the service's `url`/`endpoint`). Once the Week-3 scheduler ships, this
+   reads a cached snapshot by default; pass `--live` to force a fresh probe.
+3. If unhealthy, `homelab service <name> log` (or MCP `tail_log`) for the
+   last 200 lines.
+4. Cross-check blast radius: `homelab node <name> relations` — is this
+   entity's own backend host healthy? A downstream failure (e.g. `strong`
+   down) will show up here before the service's own logs explain anything.
+5. If the fix is a restart: classify first (`oikos/policy.yaml` —
+   `service-restart` is `reversible_low` unless the service has a
+   `service_overrides` entry, e.g. `caddy`/`dns` are `config_mutation`).
+   Unattended agents may act on `reversible_low` without approval.
+
+Docs-update checklist: none for a pure health check. If the investigation
+reveals stale `risk_notes` or a wrong `doc_page`, fix `inventory.yaml` in
+the same session.