Reconcile: adopt initialization's consolidated HQ as canonical, re-home this session's new work #24
@@ -162,6 +162,13 @@ same module. There is one derivation here, and there should stay one.
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**A live listing returned credentials in plaintext.** Not a coverage question, but the reason
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sealing is worth its inconvenience.
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**An image store is a module, and was written up here as something the mesh does.** It was
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considered for the substrate and removed, because the test is not *can it grant itself one* —
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nearly anything passes that — but whether the control plane needs it before it can give its first
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instruction. It does not. So a registry somebody runs for their own images is the same module as
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the one the mesh runs for its own: it offers a place to push, and claims that role once per
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machine.
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**A rule was enforced only at the far end.** A module may not declare an action, and the host
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refused one correctly — but the control plane accepted it into the catalogue, resolved it and
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pushed it, so the refusal arrived on a machine with nothing tying it back to the manifest. The
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@@ -84,14 +84,38 @@ system's seven images named repositories that **do not exist** — it publishes
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registry entirely — and one of the seven had been renamed upstream. Nothing that only checks the
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shape of a reference could ever have found either.
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## The mechanism already existed, and this issue was wrong about that
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**Corrected 2026-09-01, the same day.** This was filed saying nothing turns a tag into a digest.
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That is false, and the answer had been designed and built before any of it was written.
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A module does not name an image at all. It names an **artifact**, and declares where that artifact
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comes from:
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```
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build.artifacts: [{ name: "gitea", kind: "upstream", from: "gitea/gitea:1.22" }]
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resources: [{ id: "server", type: "container", artifact: "gitea", … }]
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```
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`kind: upstream` means *an image somebody else built, mirrored into the mesh's own registry and
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pinned by the digest it lands with*. The builder produces it; the manifest the mesh holds is
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derived, with `artifact` replaced by the real reference and the key removed, because the host has
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never heard of that word. A resource naming an artifact nothing produced is refused.
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So the two-document split this issue described as the shape of a fix **is the design**, and it
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covers both cases it said were unsolved: an image the mesh builds, and an image somebody else
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built. Mirroring also removes something worse than a stale pin — every machine needing a route to
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a public registry, and a tag a stranger can move.
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**What was actually wrong was the examples.** They hard-coded image references instead of naming
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artifacts, so they inherited a problem the design does not have. Pinning twelve of them by hand
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was treating the symptom, and left the reference pointing at a public registry rather than the
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mesh's own.
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## What is still open
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**Nothing turns a tag into a digest as part of the mesh's own work.** It was done by hand here,
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which is exactly what this issue says a person should not be asked to do. The shape of the answer
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is unchanged: a person writes a tag, the mesh resolves it once and records both, and *this pin is
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behind its tag* becomes a question the mesh can answer.
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**The examples should name upstream artifacts** rather than carry hand-pinned digests. That is the
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remaining work, and it is a rewrite of five manifests rather than a mechanism to build.
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**The mesh's own provisioner images still cannot be pinned in a repository**, because their digest
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does not exist until they are built and pushed. That is the bundle's problem, and the bundle solves
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it by writing the digest down after building. A module naming an image the mesh builds needs the
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same treatment, and does not have it.
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The refusal added here stays: a placeholder must not reach a machine whatever the reason it is
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there.
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@@ -0,0 +1,70 @@
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---
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status: located
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opened: 2026-09-01
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located-in: [mesh-control]
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fixed-by:
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amended-design:
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---
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# 026 — The data directories are mounted and never declared
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## Symptom
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Four modules mount **fourteen host paths** that no resource in those modules declares:
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```
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gitea /services/gitea/gitea
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postgres /services/postgres/db-data
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minio /services/minio/data/data1-1
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mailu eleven more, including the mail spool and the admin database
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```
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Each is a bind mount on a container. None is a `directory` resource. The mesh has never heard of
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any of them.
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## What that costs
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**They are created by the container runtime, as root.** A bind mount whose source does not exist
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is created for you, owned by root, with whatever mode the runtime picks. So `owner` and `mode` —
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which exist precisely so a module can say who its data belongs to — are silently not applied to
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the only directories that hold data.
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**The protection that exists for exactly this does not reach them.** A directory the mesh declared
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and no longer wants is *kept*, not removed, when it holds anything the mesh did not put there
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([ADR 0030](../../02-DECISIONS/0030-data-outlives-the-mesh-that-declared-it.md)). That rule is the
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answer to *what happens to my data when a module goes away*, and it is written in terms of
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declared directories. **An undeclared one is not protected by it, because the mesh does not know
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it is there.**
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So the single rule guarding against data loss covers the configuration directories, which are
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cheap to lose, and not the data directories, which are the reason the rule exists.
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## Where it came from
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These manifests were written by reading the arrangement being replaced and carrying its
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`docker-compose` files across — service, image, ports, volumes, environment — into the new
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manifest's container shape. That shape can express all of it, which is what made the
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transliteration feel like progress.
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**A container shape that can express a compose file will be filled in like a compose file.** The
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mesh's model is larger than that: a directory is a thing the mesh owns, with an owner and a mode
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and a rule about what happens when it is no longer wanted. A volume line borrowed from compose
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declares none of it, and nothing complains, because a bind mount source is a string.
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## What a fix has to keep
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- **Every host path a container mounts is declared.** If a module wants a directory on the
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machine, it says so, with who owns it and what mode — and gets the removal rule with it.
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- **The check is mechanical.** A person comparing volumes against declared directories by hand is
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the process that produced this. It is a few lines against the manifest and belongs beside the
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other manifest checks.
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- **Not by inventing directories at apply time.** The host creating what a mount needs would make
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the mesh's ownership of a directory depend on which resource mentioned it first, and would put
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the same undeclared path back a layer down.
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## Not yet answered
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**Where a module's data should live at all.** These paths were inherited whole from the
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arrangement being replaced, which put everything under one directory per service. Whether that is
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right here is a separate question, and a bigger one — it decides what a person backs up, and what
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survives a module being removed.
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