GitHub tracker integration for Symphony Elixir

[mpuig]

Hi all, I’ve been working on adding GitHub as an alternative tracker for the Symphony Elixir runtime alongside the existing Linear integration.

The goal is to preserve Symphony’s current orchestration model while making it possible to use:

• GitHub Issues as work items
• GitHub Projects v2 Status as the workflow state
• GitHub PRs as the implementation and review artifact

I’ve opened a PR in my fork here:

mpuig#1

It adds:

• a GitHub tracker adapter and client
• config/schema support for tracker.kind: github
• GitHub Issues / Projects v2 status mapping
• Symphony-native GitHub tools for issue/project operations
• Symphony-native GitHub tools for PR/review/check operations
• preserved dispatch semantics, including blocked Todo handling
• dashboard support for GitHub project links

A few constraints I tried to preserve:

• keep the Linear path unchanged
• avoid changing the core Symphony orchestration model
• keep GitHub support additive rather than invasive
• preserve documented local codex.command behavior

I’d appreciate feedback on whether GitHub is a useful upstream direction for Symphony, and whether this implementation is aligned with the intended tracker/tool architecture.