fix(readiness): report host OS qualification

[deepujain]

Outcome

nemoclaw host probe now reports the Linux distribution, release, and display name from bounded /etc/os-release evidence. It warns before installation or onboarding when the release is outside the Ubuntu 24.04 host-level qualification boundary or the release evidence cannot be identified.

Reason

The readiness report exposed only the platform family and architecture for ordinary Linux and WSL hosts. The existing identity collector parsed OS release evidence only after classifying DGX Station hardware, so generic hosts could not report or assess their distribution release.

Related issues

Fixes #11026.

Changes

• Collect ID, VERSION_ID, and PRETTY_NAME through a bounded regular-file read before hardware-specific identity branches, rejecting oversized or malformed evidence.
• Publish stable host.os.distribution, host.os.version, and host.os.pretty_name observations, including unknown observations when collection fails.
• Emit warning-only host.os.release_unqualified and host.os.release_inconclusive findings without turning an otherwise supported host into a failure.
• Register the new observations for managed-serving readiness consumers and document the public contract.
• Add regressions for generic-host collection, qualified Ubuntu 24.04, unqualified Debian and Ubuntu releases, and missing evidence.

Verification

• npm run build:cli passed.
• npm --prefix nemoclaw run build passed.
• npx vitest run src/lib/readiness/host.test.ts src/lib/readiness/platform-qualification.test.ts src/lib/inference/serving/adapter-registry.test.ts passed, 134 tests, including embedded-NUL rejection.
• Exact-file pre-commit checks passed, including managed catalog validation, repository checks, source-shape budget, growth guardrails, and secret scanning.
• Commit-message and pre-push checks passed, including CLI typecheck after building the declared nested plugin dependency.
• git diff --check origin/main...HEAD passed.
• The reviewed diff contains no secrets, API keys, or credentials.

Review notes

The new findings are advisory. They expose the tested host-level onboarding boundary without claiming that another Linux release is unusable.

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Signed-off-by: Deepak Jain deepujain@gmail.com

Summary by CodeRabbit

• New Features

  • Host readiness checks now report the operating system distribution, version, and display name.
  • Linux readiness now recognizes and qualifies Ubuntu 24.04 installations.
  • Readiness results include non-blocking warnings when release information is unavailable, unsupported, or inconclusive.

• Bug Fixes

  • Improved handling of malformed, oversized, unreadable, or non-standard operating-system release data.

• Documentation

  • Updated system readiness documentation to describe Linux and WSL release detection and reporting.

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📝 Walkthrough

Walkthrough

Linux and WSL platform probing now records OS distribution, version, and pretty name. Host readiness qualifies Ubuntu 24.04 and reports non-blocking warnings for unsupported or unavailable release evidence.

Changes

Host OS readiness

Layer / File(s)	Summary
Shared platform OS identity collection src/lib/readiness/platform-qualification.ts, src/lib/readiness/platform-qualification.test.ts	Platform identity collection performs bounded /etc/os-release reads, rejects malformed content, and returns shared OS fields for all platform result types.
Host readiness observations and release findings src/lib/readiness/host.ts, src/lib/readiness/host.test.ts	Host readiness exposes OS observations and warns when Linux release evidence is incomplete or is not Ubuntu 24.04. Tests cover qualified, unsupported, and unavailable releases.
Serving registry and readiness documentation src/lib/inference/serving/adapter-registry.ts, docs/reference/system-readiness.mdx	The serving registry and documentation define the new OS observations and release qualification behavior.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature · Severity of issue fixed: Medium

Suggested reviewers: ericksoa, cv

Sequence Diagram(s)

sequenceDiagram
  participant collectPlatformIdentity
  participant HostReadiness
  participant ServingRegistry
  collectPlatformIdentity->>HostReadiness: provide OS distribution, version, and pretty name
  HostReadiness->>HostReadiness: qualify Linux release evidence
  HostReadiness-->>ServingRegistry: expose observations and findings

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Merge Risk: ⚪ Minimal · up to 9765b

Host OS distribution and release observations, along with advisory warnings for unqualified or inconclusive Linux releases, are consistently implemented with no demonstrated merge-blocking risk.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: reporting host operating-system qualification for readiness checks.
Linked Issues check	✅ Passed	Issue #11026 requires host OS distribution and version observations and an early warning for unsupported or untested releases. The PR collects bounded /etc/os-release data for ID, VERSION_ID, an…
Out of Scope Changes check	✅ Passed	The changed files support issue #11026. The parser, host readiness projection, readiness registration, tests, and documentation implement or verify the requested observations and warnings. No unrelate…
Docstring Coverage	✅ Passed	Docstring coverage is 81.82% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 5 files.

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Actionable comments posted: 2

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Inline comments:
In `@src/lib/readiness/platform-qualification.ts`:
- Line 321: Update the os-release reading flow around readOptional to enforce
the configured byte limit during the read, rather than after loading the
complete file. Read at most limit + 1 bytes before decoding, and treat any
oversized result as unavailable or inconclusive while preserving the existing
default path and release-evidence behavior.
- Line 321: Update the os-release loading flow around readOptional and
parseOsRelease so raw bounded file content reaches parsing without removing NUL
bytes; reject or mark records containing NUL as malformed, preserving the
required inconclusive warning even when VERSION_ID is otherwise valid. Add a
regression covering ID=ubu\0ntu with VERSION_ID=24.04.

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• src/lib/readiness/platform-qualification.ts

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[deepujain]

Documentation Writer Review receipt for head b85a243 against base 8d6643b: PASS, docs updated. The independent review used range-diff to confirm semantic identity after rebase and checked implementation, tests, documentation, and repository writing instructions. AGENTS.md blob: 43145d5a12720240f35ab52c5b4d97fcb21b7e20.

[wscurran]

✨ Thanks for the fix. This adds host OS distribution and version reporting to the readiness probe so unqualified releases are warned about before install or onboarding.

---

Related open issues:

• #11026 [All Platforms][CLI&UX] host probe records no host OS distribution or version, so an unqualified OS release is never warned about before install

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[cjagwani]

One additional material acceptance path surfaced after my existing review.

[P2] Treat malformed syntax in selected /etc/os-release fields as inconclusive. With valid Ubuntu ID and VERSION_ID records plus a malformed PRETTY_NAME record (for example, an unterminated quote), parseOsRelease silently drops only PRETTY_NAME; host readiness then retains the valid identifiers and emits no host.os.release_inconclusive warning. That contradicts this PR's stated malformed-evidence contract and can falsely qualify the host. Fail closed when an ID, VERSION_ID, or PRETTY_NAME record has malformed syntax, and add an exact regression proving malformed PRETTY_NAME cannot qualify Ubuntu 24.04.

[deepujain]

Fixed the additional malformed-field acceptance path in 970e783 after rebasing onto current main. A syntactically invalid selected ID, VERSION_ID, or PRETTY_NAME record now fails the entire OS-release parse closed. Added an exact unterminated PRETTY_NAME regression that proves Ubuntu 24.04 identifiers are discarded and host.os.release_inconclusive is emitted. Plugin and CLI builds passed; the focused readiness suite passes 126 tests.

[prekshivyas]

Request changes before merge. Two release-qualification paths can omit the warning required by #11026.

[prekshivyas]

Pushed follow-up fix f76b94a. It presents both OS-release readiness warnings at the onboarding boundary and fails closed on repeated selected os-release keys. Regression verification also retains cjagwani’s NUL-byte, injected carriage-return, descriptor-backed carriage-return, and malformed selected-field cases. Local validation: 173 focused tests passed; CLI build and CLI typecheck passed; targeted Oxfmt, Oxlint, and git diff checks passed.

[prekshivyas]

Request changes before merge. The prior warning-presentation, repeated-key, carriage-return, NUL, and malformed-field concerns are fixed at this head, but the production managed-cluster reader now mishandles the standard os-release symlink. The exact-head focused suite passes 173 tests; CLI build/typecheck and targeted format/lint checks pass. Separately, the growth-guardrail check is failing because the branch has not incorporated current main 5310ad0.

[prekshivyas]

Re-reviewed exact head b83a433. The standard os-release symlink is supported through dedicated bounded local and pinned-SSH readers, arbitrary links remain rejected, and the local path reads at most maxBytes + 1 before decoding. Prior warning-presentation, repeated-key, NUL, carriage-return, and malformed-field concerns remain fixed. Validation passed: 211 focused tests, CLI build/typecheck, Oxfmt, Oxlint, git diff check, and the codebase growth guardrail.

fixed

[cjagwani]

Source PR #11291 is approved at head 671697e. Same-repository relay #11780 preserves that exact source head as a parent and applies its 12-file patch to current main in signed, Verified head 6cc8008. The protected OpenShell SDK package gate and all five required CI checks pass on the relay. Please keep #11291 as the contributor source of record; #11780 is the final protected-CI and merge vehicle. No further contributor action is needed unless review identifies a new material issue.

[deepujain]

Superseded by same-repository relay PR #11780. I verified that #11780 and this PR have the same full 12-file stable patch ID. #11780 has the protected OpenShell SDK and complete CI results, so no additional replacement PR is needed.