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feat(quadlet): backend-manifest renderer (Phase 3.1 of v1.7.52)

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The QuadletUnit struct now covers everything a backend manifest needs
(ports, environment, devices, add_hosts, entrypoint+command, read-only
root, no_new_privileges, cpu_quota, restart policy choice). Adds
QuadletUnit::from_manifest(&AppManifest, name) that translates a parsed
manifest into a unit, plus parse_memory_mib for "1g"/"512m"/raw-MiB
forms. The renderer skips empty/false directives so existing companion
units render byte-identically — no behavior change for shipping
companions; the backend renderer is dead code until Phase 3.2 wires it
into the orchestrator.

Eight new unit tests cover:
* parse_memory_mib forms (1024, 512m, 2g, garbage)
* shell_join quoting (whitespace, embedded quotes)
* RestartPolicy → systemd string mapping
* render emits backend directives when set
* render skips them when defaulted (companion regression gate)
* from_manifest happy path on a bitcoin-knots-shaped manifest
* from_manifest read-only volume detection
* from_manifest tmpfs filtering
* end-to-end manifest → render bytes assertion

Tests: 615 → 624 (+9 net; one pre-existing parse_memory_mib path was
implicitly covered before but is now explicit). Cargo warnings: 0.

`from_manifest`, `parse_memory_mib`, and `RestartPolicy::OnFailure` are
marked allow(dead_code) with explicit references to Phase 3.2 — if
3.2 doesn't wire them, the dead-code warning resurfaces.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
archipelago
2026-05-01 17:09:50 -04:00
parent 9a5d5027f5
commit 82eba8be03
3 changed files with 446 additions and 6 deletions
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tests/lifecycle/TESTING.md
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@@ -54,7 +54,7 @@ v1.7.52 tags.
| Layer | Tests | Suites | Status |
|---|---:|---:|---|
| L0 unit | 615 | n/a | ● green |
| L0 unit | 624 | n/a | ● green |
| L1 RPC | 70 | bitcoin-knots, lnd, electrumx, btcpay, mempool, fedimint, required-stack, package-update-smoke | ● for the 6 core apps |
| L2 UI | 9 | ui-coverage | ● for dashboard + 7 proxy paths + bitcoin-ui:8334 |
| L3 lifecycle survival | 8 | companion-survives-archipelago-restart, backend-survives-archipelago-restart, required-stack-destructive | ◐ companions ● ; backends ◐ regression-gate (will fail until Phase 3 Quadlet ships) |