A skeleton laid out against the stated requirements rather than derived from the current shape: four tiers, repositories at the root, and a dependency rule that only points downward. Four moves the current shape does not have. The substrate is applied by the agent from a pinned bundle, not delivered by the pipeline. That is the bootstrap circularity removed rather than worked around — the first node is the ordinary path with no control plane on the other end, which also makes it the cheapest lab scenario instead of the one nobody exercises. One agent binary with a detected capability profile — managed, user, edge. A phone becomes a capability question rather than a platform question, so it needs no second implementation. Modules declare which profiles they can land on, and an impossible assignment fails at declaration. Connectivity becomes a context. ADR 0015 names nine and none owns the overlay, resolver, firewall or ingress, while research 005 measured reachability as the only cluster in the catalogue that genuinely changes together under one intent. Gap and evidence point the same way. That is an addition to an accepted record, so it needs its own record and is not written here. Feature splits into artifact (built once per version) and part (selected per node). The conflation of those two cardinalities under one word is what makes the delivery pipeline hard to reason about. Also makes explicit in how-we-build that the main-branch rule covers this repository too. The rule already said 'without exception'; nothing was amended, so nothing is recorded.
00-META
The northern star. What HAL is, the environment it runs in, and what changes when it works. Every research effort and design decision is checked against this folder.
| File / folder | Purpose |
|---|---|
mission.md |
Vision, mission, and the values that decide arguments |
context.md |
The environment — conditions, not aspirations |
effect.md |
What is different when the work is done |
how-we-build.md |
The rules that hold across the mesh, each one earned. The source of the mesh constitution — the governed page the mesh injects into design sessions is derived from it. |
repos.md |
Where implementation lives, and what each repository owns |
process/ |
The playbooks — how work moves through this repository, for engineers and agents alike |
Rules
- Markdown only.
- Stable by nature. Changes here reflect a genuine shift in intent, not iteration. The one
exception is
how-we-build.md, which changes whenever a rule is earned — and only through its amendment process. - Research and design must be traceable back to what is written here.
- Instance-agnostic. These documents describe the mesh as a concept. No machine names, no counts, no topology.
On the architecture overview in the code repository
The code repository carries an architecture overview predating this folder. It is a useful
description of how the mesh works, and its content now lives — anonymised and checked against
the implementation — in 03-DESIGN/00-as-is/. GENESIS answers why;
that document answered how, which is the design layer's job.
It had also drifted from the implementation in ways worth recording, since both were found by comparing it against the code rather than by anyone noticing:
- It described the pipeline as having a separate builder process and a build stage that packages. Neither was true after 2026-08-04; the documents stayed stale until 2026-08-06 (ADR 0014).
- It listed the mesh as spanning a fixed number of named machines, which is exactly the content this repository cannot carry.
It also lists "symlinks, not copies" as a key design principle, and that is a genuine contradiction rather than a stale detail. The mesh's stated intent is that it creates no symlinks at all — the rule is not merely "only the installer may link", and a founding document elevating linking to a principle points the opposite way from where this is going.
What exists today is that the installer owns and reconciles every link
(ADR 0011) — an as-is fact, recorded in
03-DESIGN/00-as-is/05-runtime-and-installation.md.
Centralising who may link narrowed the incident class; it did not close it. The intent is to
remove the mechanism, recorded as ADR 0018.
A founding document contradicting the direction of travel is precisely the failure this folder exists to prevent.