Feat: Add Ruby analyzer

[marco0560]

Add Ruby analyzer

Summary

Introduce first-party Ruby support for Codira.

Motivation

Ruby remains widely used in web applications, developer tooling, automation, and infrastructure projects. The Ruby ecosystem, particularly Ruby on Rails, continues to represent a substantial body of open-source software.

Ruby's object model maps naturally onto Codira's symbol, reference, and call graph architecture.

Scope

Supported file extensions:

.rb
.rake
.gemspec

Supported constructs:

• modules
• classes
• methods
• constants
• mixins
• singleton methods
• aliases
• requires
• includes
• extends

Deliverables

New package:

codira-analyzer-ruby

Capabilities:

• symbol extraction
• call extraction
• reference extraction
• embedding payload generation
• analyzer registration

Acceptance Criteria

• deterministic output across runs
• successful analysis of representative OSS repositories
• plugin contract compliance
• stable symbol extraction

Non-Goals

• Rails-specific semantic analysis
• runtime metaprogramming resolution
• ActiveRecord relationship inference
• dependency injection discovery

Architectural Constraints

• deterministic traversal order
• immutable analyzer outputs
• no runtime network access
• no analyzer-to-analyzer dependencies