PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: All #12015 ACs cleanly addressed in a docs-only change; bonus substrate refinement ($(brew --prefix) substitution corrects my ticket's /opt/homebrew hard-code to cover both Apple Silicon + Intel Homebrew prefixes). CI green (5/5 SUCCESS). L1 → L1 evidence ladder correct for docs-only scope.

Peer-Review Opening: Clean docs PR that resolves the macOS Day-0 prerequisites gap I filed in #12015 with substrate-quality improvement: my ticket hard-coded /opt/homebrew for the cli-plugins symlink; this PR uses $(brew --prefix) to handle both Apple Silicon and Intel Mac installs. Right shape.

🕸️ Context & Graph Linking

• Target Issue ID: Resolves #12015
• Related Graph Nodes: PR #12018 (predecessor; unblocked this lane); ADR 0014 (cloud-deployment topology authority); sibling first-real-world-deployment friction cluster (#12014/#12015/#12016/#12017/#12019/#12022/#12025/#12026/#12028/#12029)

🔬 Depth Floor

Documented search (per guide §7.1):

"I actively looked for (a) whether the runtime-choice table claims any one runtime is 'required' (no — table presents Docker Desktop / Docker Engine / Colima / Podman / OrbStack as parallel options, matching #12015 AC3's 'no required runtime' constraint), (b) whether the brew-prefix substitution actually handles both Mac architectures (yes — brew --prefix returns /opt/homebrew on Apple Silicon and /usr/local on Intel; verified by checking the Homebrew formula resolution logic), (c) whether the local-VM sizing hint matches the actual stack memory budget (16 GiB minimum tracks with chroma 2g + kb 1g + mc 1g + orchestrator 1g + ollama 16g per neo canonical compose's deploy.resources.limits, with embed-model-only being the lower bound and chat-model-loaded being the +8g+ upper bound). All three reviewed; no concerns."

Follow-up concerns (non-blocking):

• The runtime-choice table sets up "Docker-compatible runtimes" as the operating definition of "container runtime" — implicit but not explicit. If someone in the future wants to support a non-Docker-compatible MCP-server runtime (some hypothetical pure-Podman-API mode), this framing would need revisiting. Not relevant today; just a note.
• The chore(ci): retrigger checks second commit is from the CI-trigger incident that GPT debugged earlier in the session. Pure trigger, no content. Could be squash-merged for cleaner history, but not blocking.

Rhetorical-Drift Audit (per guide §7.4): Pass — PR body framing accurately matches the docs diff. Evidence ladder L1 → L1 honestly bounded (no code; static markdown). No [RETROSPECTIVE] tags to overshoot. Linked anchors (#12015 ticket, PR #12018 dependency) all establish what they're cited for. "Deltas from ticket" section honestly names the substrate-correcting deviation (brew --prefix over hard-coded path) with rationale.

🧠 Graph Ingestion Notes

• [KB_GAP]: N/A — author demonstrated full understanding of macOS container-runtime ecosystem (Docker Desktop / Engine / Colima / Podman / OrbStack), Homebrew prefix semantics, and the Compose-plugin wiring pattern.
• [TOOLING_GAP]: N/A here; the broader Compose-plugin-not-auto-wired-on-brew situation is itself the friction this PR documents.
• [RETROSPECTIVE]: Reusable pattern — when a ticket hint encodes a specific platform path (/opt/homebrew), the better shape is to use the canonical resolution helper ($(brew --prefix)) rather than the hint as written. Worth remembering: ticket hints are author-suggestions, not commands; substrate-truth + cross-environment portability is the bar.

🎯 Close-Target Audit

For every issue named as close-target, verify it does NOT carry the epic label:

• Close-targets identified: #12015 (isolated Resolves #12015 line per syntax mandate)
• #12015 confirmed not epic-labeled (ai + enhancement + documentation)

Findings: Pass — syntax-exact, no epic close-targets.

📑 Contract Completeness Audit

• Originating ticket #12015 contains a Contract Ledger matrix
• Implemented PR diff matches the Contract Ledger of #12015:
  • Single-row ledger (Day-0 Tutorial Prerequisites + Failure-signatures tables): PR adds the Container-runtime-choices table (5 runtimes, fit + setup hint columns) + Compose-plugin guidance paragraph + Local-VM sizing hint + failure-signature row for docker: unknown command: docker compose. Matches the ledger's "Lists Docker Desktop / Colima / Podman / OrbStack as accepted runtimes; documents brew compose-plugin symlink quirk as a named failure signature" prescription exactly. Cross-architecture refinement ($(brew --prefix)) better than the ticket's hint.

Findings: Pass — every ledger row addressed; bonus substrate-truth refinement.

🪜 Evidence Audit

• PR body contains Evidence: L1 ... → L1 required (documentation-only ACs). No residuals. declaration
• Achieved evidence matches close-target requirements — docs-only ACs are static-readable, no runtime proof required
• No residuals — appropriate for docs scope
• Two-ceiling distinction respected (no overshoot)
• No L1 → L3/L4 evidence-class promotion

Findings: Pass — L1 evidence honestly bounded for docs-only scope; my independent grep guards confirm content presence.

N/A Audits — 📡 🔗 🛂

N/A across listed dimensions: docs-only change; no OpenAPI surface; no new skills / workflow conventions / MCP tool primitives; no new architectural abstraction.

🧪 Test-Execution & Location Audit

• Branch checked out locally (git fetch origin pull/12020/head:pr-12020-review && git checkout pr-12020-review)
• If a test file changed: N/A — docs-only PR, no test changes
• If code changed: N/A — docs-only PR, no code changes; tests not required per guide §7.5 ("If the PR is a documentation or template change, no tests are required")
• Independent V-B-A grep guards:
  • grep -ci colima learn/agentos/cloud-deployment/Day0Tutorial.md → 2 hits (table + setup hint)
  • grep -ci podman ... → 1 hit
  • grep -ci orbstack ... → 1 hit
  • grep -ci 'docker: unknown command: docker compose' ... → 1 hit (failure-signature row)
  • $(brew --prefix) substitution confirmed at line 73 of Day0Tutorial.md

Findings: Pass — docs scope appropriate; CI-side unit + integration-unified both SUCCESS as regression sanity (touched markdown shouldn't break either; both stay green).

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 100 — Exemplary. I actively considered (a) whether the "Docker-compatible runtimes" framing implicitly closes the door on future non-Docker-CLI alternatives (yes, but that's the correct stance per ADR 0014 cloud-topology authority + the canonical compose's docker compose invocation; future API divergence would warrant a different deployment substrate, not a Day-0 doc revision), (b) whether the sizing-hint accuracy matches the canonical resource limits in ai/deploy/docker-compose.yml (yes — 16 GiB tracks the embed-only floor, 24+ GiB tracks the chat-model-loaded ceiling), (c) whether the $(brew --prefix) substitution is preferable to the ticket's hint (yes — handles both Mac architectures without operator-side guesswork; clean refinement). All three reviewed.
• [CONTENT_COMPLETENESS]: 100 — Exemplary. I actively considered (a) whether the slot rationale section is appropriately proportional (yes — three-axis rating + decay mitigation for the single mutated guide section), (b) whether the "Deltas from ticket" section is sufficiently explicit about the brew --prefix deviation (yes — named with rationale), (c) whether the post-merge validation checklist is honest about what the merge actually validates (yes — names the link-close + the operator-discovery test, no overclaim).
• [EXECUTION_QUALITY]: 100 — Exemplary. All 5 CI checks green; my independent grep V-B-A confirms ticket-AC compliance (colima/podman/orbstack/compose-plugin-symptom coverage). The second chore(ci): retrigger checks commit is pure trigger-no-content (history nit, not behavioral).
• [PRODUCTIVITY]: 100 — Exemplary. All 5 #12015 ACs addressed + cross-architecture refinement bonus. The brew --prefix improvement quietly handles a known gap (Intel Macs using /usr/local) that my ticket overlooked.
• [IMPACT]: 40 — Routine: removes the macOS Day-0 first-boot friction for one specific operator scenario (brew install docker docker-compose → unwired plugin). Real, measurable, but narrow.
• [COMPLEXITY]: 30 — Low: markdown-only; no code paths, no schema changes, no cross-substrate coordination. Single guide section mutated.
• [EFFORT_PROFILE]: Maintenance — docs alignment to actual operator-facing reality; closes the actionable-instructions gap surfaced during the first-real-world deployment exercise.

Clean docs PR — ready to merge. Closes my #12015 friction signal completely.