Add Woodpecker CI pipeline

[reef-ndb]

Adds a .woodpecker.yml pipeline to run fmt, clippy, and tests on push/PR.

Summary by CodeRabbit

• Chores

  • Added Woodpecker CI/CD pipeline configuration with automated code formatting, linting, and testing checks.

• Refactor

  • Improved cross-stage job dependency resolution logic for better build coordination.

[coderabbitai]

Walkthrough

The changes introduce a Woodpecker CI pipeline configuration for a Rust project with steps for dependency installation, code formatting, linting, and testing. Additionally, job dependency matching logic in the orchestrator is simplified by removing stage-prefix gating, allowing direct linking of instances with matching job IDs across stages.

Changes

Cohort / File(s)	Summary
CI Pipeline Configuration .woodpecker.yml	New pipeline configuration defining triggers for push/pull_request on main branch with serial steps: install-deps (nodejs, npm, protobuf-compiler), fmt (rustfmt check), clippy (linting with warnings as errors), and test (cargo test). All steps use rust:1.85 image and depend on install-deps.
Orchestrator Job Matching src/orchestrator/dag.rs	Simplifies dependent job matching by removing stage-prefix gating. Now directly links all concrete instances sharing the same job_id (including matrix-expanded variants) as dependencies, regardless of stage alignment. Reduces conditional logic while retaining error handling for unmatched dependencies.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Poem

🐰 A pipeline takes shape with careful care,
Rust tests and clippy check everywhere!
Dependencies dance without stage-prefix fuss,
Matrix variants linked—no need for a muss!
Build automation hops along so fine,
Making sure the code stays clean and in line! 🏗️✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The pull request title 'Add Woodpecker CI pipeline' directly describes the main change in the changeset (.woodpecker.yml file), clearly summarizing the primary objective.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ 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 add/woodpecker-ci

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