PR-15: Ecosystems (C#/Rust/Ruby) + Semgrep export (scanner) - #43
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…-15) - Detection signals for C# (Semantic Kernel / Azure.AI.OpenAI), Rust (async-openai), Ruby (ruby-openai). - CVE manifest parsing for NuGet (*.csproj), crates.io (Cargo.lock), RubyGems (Gemfile.lock) via OSV — supply-chain coverage for the three ecosystems. - Credential coverage extended to *.cs/*.rs/*.rb/*.csproj on 13 DSGAI02/DSGAI13 rules, with C#/Rust/Ruby fixture cases (P02.9 catches raw tokens); answer sheet 29 -> 32. - build/export_semgrep.py -> dist/dsgai.semgrep.yaml: the 85 STRUCTURAL rules as a Semgrep pack (value-bearing excluded by design — their matches must never surface). Generated from the rules YAML; drift is a CI failure (--check). Makes incumbent toolchains carriers of the DSGAI framework. - test_runner: the fixture scan now runs --no-cve so CI is deterministic (no network); added semgrep-sync and multi-ecosystem-parse tests. Verified: regen --check (32 pins); pytest 21 passed; semgrep pack valid YAML (85 rules, all pattern-regex + dsgai metadata); yamllint clean under CI config.
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Phase 4. Depends on PR-11.
Ecosystem expansion — C# / Rust / Ruby
*.csproj), crates.io (Cargo.lock), RubyGems (Gemfile.lock).*.cs/*.rs/*.rb/*.csprojon 13 DSGAI02/13 rules — with C#/Rust/Ruby fixture cases so the coverage is actually tested (P02.9 catches the raw tokens). Answer sheet 29 → 32.Semgrep rule-pack export
build/export_semgrep.py→dist/dsgai.semgrep.yaml— the 85 STRUCTURAL rules as a Semgrep pack (value-bearing rules excluded by design — their matches must never surface). Generated from the rules YAML; drift is a CI failure (--check). Strategic: incumbent toolchains become carriers of the DSGAI framework.Verification
regen --check→ all 32 line-pins match;pytest→ 21 passed.pattern-regex+dsgai_controlmetadata), clean under the CI yamllint config.--no-cveso CI is deterministic (no network); CVE ecosystem parsing is covered by an offline unit test.Honest scope note
Coverage here is DSGAI02 (credentials, language-agnostic patterns) + DSGAI04 (supply-chain via CVE). DSGAI17/20 language-specific structural patterns (retry/endpoint shapes in C#/Rust/Ruby) are deferred — writing them without per-language structural fixtures would violate the project's own "no rules without fixture test cases" rule. Tracked as a follow-up.