torben
4e80a07ac7
Files changed: - AGENTS.md - CHANGES.md - VERSION - docs/ownership-and-templates.md - docs/pipeline-rationale.md - docs/version-model.md - docs/why-gates-are-code.md
72 lines
4.7 KiB
Markdown
72 lines
4.7 KiB
Markdown
# Ownership and Templates
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Chemenu ships two kinds of files side by side, and at a glance they look the same: both are
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plain markdown, both sit in the repo root or under `kb/`, both get read at session start. But a
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stack upgrade treats them completely differently. Some - [AGENTS.md](../AGENTS.md),
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[kb/CONTRACT.md](../kb/CONTRACT.md), the per-stage contracts - are identical in every instance
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that runs this stack and can simply be overwritten by the next release. Others - `USER.md`,
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`SOUL.md`, `kb/CONVENTIONS.md`, `ENVIRONMENT.md` - describe one particular instance, and
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overwriting them would silently erase a choice someone made on purpose.
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## Two different kinds of truth
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The stack-owned files describe how the tool works. `kb/CONTRACT.md` opens by saying it holds
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what `tools/wikitool` enforces or what follows mechanically from how it operates - see
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[kb/CONTRACT.md](../kb/CONTRACT.md), lines 10-13. That kind of statement doesn't vary by
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instance: the compiler behaves the same way regardless of who is running it, so the sentence
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describing that behavior can be copied byte-for-byte into every checkout without becoming
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wrong anywhere.
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The instance-owned files describe a choice: which language pages are written in, what tone the
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agent takes, who the operator is, which git remote is authoritative, which MCP servers are
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reachable. None of that follows from the tool's mechanics - two instances of the identical
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stack can answer all of these differently and both be correct. [AGENTS.md § Personalization](../AGENTS.md#personalization)
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frames the split the same way for `kb/CONTRACT.md` versus `kb/CONVENTIONS.md`: "the split is by
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who may change the sentence, not by what it is about." A rule about page structure could in
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principle have been written per-instance too, but then every instance answering "not German" to
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setup would be hand-editing a file the stack also ships, and the next `dist export` merge would
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hand the instance's own file back to it, discarding the customization.
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## Why silent overwrite is the failure being designed against
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A stack update is meant to be a routine, low-risk operation: pull the latest release, get
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whatever fixes and features shipped since the last one. That only stays low-risk if the update
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knows which files it's allowed to touch. If `USER.md` or `kb/CONVENTIONS.md` were treated the
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same as `AGENTS.md` - shipped and periodically re-copied - an upgrade would quietly replace a
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description of *this* operator, in *this* language, with whatever placeholder or default the
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stack maintainers wrote. The damage wouldn't be loud: nothing crashes, the files still parse,
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the agent just starts acting on the wrong premises until someone notices the voice or the
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language changed.
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Keeping the boundary at the file level, rather than trying to merge changes within a shared
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file, means an upgrade never has to guess which lines are "stack" and which are "instance" -
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the file itself already answers that.
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## Why a `.template`, not just an absent file
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The mechanism for instance-owned content is a `.template` file the distribution ships instead
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of the real one - `USER.md.template`, `SOUL.md.template`, `kb/CONVENTIONS.md.template`,
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`ENVIRONMENT.md.template`. An alternative would have been to ship nothing at all and let a
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brand-new instance start from a blank page. The template exists because a blank page doesn't
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tell [instructions/setup-instance.md](../instructions/setup-instance.md) what shape the answer
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should take, and it gives nothing for a validator to check afterward.
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A template carries a placeholder value - a sentinel - in the fields that need a real answer.
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Setup interviews the operator and replaces the sentinel with what they actually said. That
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gives `doctor` a mechanical way to tell "personalized" from "not yet": a file that still
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contains the sentinel hasn't been through setup, regardless of whether the file exists. That's
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also why `ENVIRONMENT.md` only warrants a WARN rather than a FAIL when absent - see
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[AGENTS.md § Environment](../AGENTS.md#environment) - while a missing or unfilled
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`USER.md`/`SOUL.md`/`kb/CONVENTIONS.md` is a harder failure: `ENVIRONMENT.md` describes one
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checkout among possibly several and is gitignored for that reason, so its absence is a normal
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state rather than a sign setup was skipped.
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## The consequence in practice
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Running a stack upgrade against an existing instance boils down to: overwrite the verbatim
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files, leave the `.template`-sourced files alone. The verbatim files are safe to replace
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wholesale because they were never instance-specific to begin with - identical content going
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back in changes nothing an instance actually decided. The template-sourced files were filled in
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once, by a person, for a reason, and nothing about a newer release of the stack's mechanics
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gives it standing to override that.
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