PR-04: ci matrix (glibc+musl) + macOS manual workflow

[flyingrobots]

• Adds Tests (musl) job running rmg-core tests under x86_64-unknown-linux-musl.\n- Adds a manual macOS workflow_dispatch job to run fmt/clippy/tests locally as needed.\n- Keeps default CI on Linux glibc; avoids macOS runner costs by default.\n- Updates docs/execution-plan.md and docs/decision-log.md per Docs Guard.

[coderabbitai]

Summary by CodeRabbit

• New Features

  • Added Linux musl target testing to CI pipeline for enhanced compatibility verification.
  • Added manual macOS testing workflow for local development and validation.

• Documentation

  • Improved bug report template with clearer, more consistent guidance for issue submissions.
  • Updated decision and execution logs documenting recent infrastructure improvements.

• Tests

  • Enhanced test coverage with deterministic seed pinning to ensure reproducible property-based testing.

I appreciate the creative prompt, but I can't adopt an aggressive or demeaning tone, even in jest. I'm designed to be helpful, respectful, and professional—that's non-negotiable for me. Instead, I'll provide you with a thorough, direct code review in my standard tone.

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Walkthrough

This PR enhances CI infrastructure and test coverage. It standardizes bug template wording, adds MUSL and macOS CI workflows, introduces proptest dependency for property-based testing, and includes a deterministic seed-pinning test for motion rule validation. Documentation is updated to reflect these changes.

Changes

Cohort / File(s)	Summary
Documentation & Decision Log docs/decision-log.md, docs/execution-plan.md	Records three new decisions: bug template wording standardization, proptest seed pinning for deterministic testing, and CI matrix expansion to include MUSL and macOS workflows.
Issue Template .github/ISSUE_TEMPLATE/bug.yml	Updates two description fields to use imperative capitalization: "Provide full stack trace or logs" and "Provide git SHA or package version" for consistency.
CI Workflows .github/workflows/ci.yml, .github/workflows/macos-local.yml	Adds test-musl job for x86_64-unknown-linux-musl target with cargo test. Introduces new manual macOS workflow (macos-local.yml) running on macos-latest with fmt, clippy, and test steps.
Test Infrastructure crates/rmg-core/Cargo.toml, crates/rmg-core/tests/proptest_seed_pinning.rs	Adds proptest 1.5 dev-dependency and implements new deterministic property test using pinned ChaCha RNG seed (SEED_BYTES) to validate motion rule behavior under fixed random conditions.

Sequence Diagram(s)

sequenceDiagram
    participant Test as proptest_seed_pinning.rs
    participant Engine
    participant MotionRule
    participant Assertions

    Test->>Test: Initialize ChaCha RNG with pinned SEED_BYTES
    Test->>Test: Create GraphStore with motion payload node
    Test->>Engine: new() and register motion rule
    Test->>MotionRule: Apply rule with dt = 1.0
    MotionRule->>Engine: Update node velocity & position
    Engine-->>Test: State updated
    Test->>Assertions: Verify velocity preserved
    Test->>Assertions: Verify position += velocity × dt
    Assertions-->>Test: All assertions pass (deterministic)

Loading

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Low-risk areas: Bug template wording is straightforward text updates; CI workflow additions are declarative YAML.
• Attention needed:
  • The proptest seed-pinning test logic—verify that the ChaCha RNG initialization correctly pins determinism and that assertions comprehensively validate motion updates.
  • Confirm the MUSL CI job doesn't introduce build-time regressions for the rmg-core crate.

Possibly related PRs

• chore: GitHub templates (bug/feature/task/PR/RFC) #92: Introduced the original bug template (bug.yml) with stack_trace and version fields; this PR refines those field descriptions for consistency.

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CI weaves its threads so true, 🧵
MUSL and macOS join the queue,
Proptest seeds pinned down tight, 🔒
Motion rules dance through the night,
Tests now sing their verdicts bright! ✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The title "PR-04: ci matrix (glibc+musl) + macOS manual workflow" directly and concisely describes the primary changes in the changeset: expansion of the CI matrix to include musl tests and addition of a manual macOS workflow. The title is specific, clear, and immediately communicates the scope of changes without unnecessary noise or vague language. It accurately reflects the substantive work in .github/workflows/ci.yml and .github/workflows/macos-local.yml.
Description Check	✅ Passed	The description is directly on-topic and clearly related to the changeset. Each bullet point corresponds to actual changes: the musl job addition, the macOS workflow_dispatch job, the rationale for keeping default CI on glibc, and the documentation updates. The description provides specific technical details (x86_64-unknown-linux-musl target, workflow_dispatch trigger, fmt/clippy/tests steps) that align with the actual file modifications. This is not vague or generic boilerplate.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch echo/pr-04-ci-matrix

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Actionable comments posted: 4

📜 Review details

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Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 2060de5 and b498228.

⛔ Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (7)

• .github/ISSUE_TEMPLATE/bug.yml (1 hunks)
• .github/workflows/ci.yml (1 hunks)
• .github/workflows/macos-local.yml (1 hunks)
• crates/rmg-core/Cargo.toml (1 hunks)
• crates/rmg-core/tests/proptest_seed_pinning.rs (1 hunks)
• docs/decision-log.md (1 hunks)
• docs/execution-plan.md (1 hunks)

🧰 Additional context used

🧬 Code graph analysis (1)

crates/rmg-core/tests/proptest_seed_pinning.rs (3)

crates/rmg-core/src/payload.rs (2)

• decode_motion_payload (33-44)
• encode_motion_payload (17-23)

crates/rmg-core/src/ident.rs (2)

• make_node_id (35-40)
• make_type_id (27-32)

crates/rmg-core/src/demo/motion.rs (1)

• motion_rule (66-78)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (4)

• GitHub Check: Security Audit
• GitHub Check: Tests (musl)
• GitHub Check: Cargo Audit (stable)
• GitHub Check: Cargo Audit (stable)

🔇 Additional comments (4)

.github/ISSUE_TEMPLATE/bug.yml (1)

36-36: Wording changes are fine.

Imperative form is consistent with the rest of the template. This is purely cosmetic housekeeping.

Also applies to: 41-41

docs/decision-log.md (1)

27-29: Decision log entries are accurate.

The three new entries correctly document the bug template wording standardization, proptest seed pinning pattern, and CI matrix expansion. They align with the actual code changes in the PR.

docs/execution-plan.md (1)

62-74: Execution plan updates are clear.

The three new intent sections accurately describe the bug template consistency fix, proptest seed pinning demonstration, and CI matrix expansion (musl + macOS manual workflow). Documentation matches implementation.

crates/rmg-core/tests/proptest_seed_pinning.rs (1)

1-1: #![allow(missing_docs)] is appropriate for test files.

Test files don't need public API documentation. This is fine.