feat(routines): check typed Rust declaration syntax

[jscott3201]

Summary

• add an in-memory checker for declaration requirements and supplied Modelica source bytes
• verify each source against its claimed legacy Git blob ID, then parse each required document once
• require exact direct class identity, direct public members, and parameter variability
• reject malformed, duplicate, missing, unused, and resource-limit inputs with sorted atomic diagnostics

Scope

The checker deliberately does not claim inventory or tree membership, inheritance resolution, class kind, declared type resolution, dependency resolution, persisted evidence, or runtime CXF behavior. Rumoca remains an in-process parser without hard time or stack isolation.

Validation

• cargo fmt --manifest-path tools/routine-compiler/Cargo.toml -- --check
• cargo test --locked --manifest-path tools/routine-compiler/Cargo.toml (89 passed)
• cargo clippy --locked --manifest-path tools/routine-compiler/Cargo.toml --all-targets -- -D warnings
• full Python lint suite (189 passed) and production lints
• G36 source inventory (431 release / 693 development files)
• G36 declaration, routine, verifier, and full scenario gates
• dataset harness (32 passed) and replay assertions
• generated book build

[jscott3201]

Cycle 1 consolidated review: PASS at 59e56f95fbaee980ce111938f4b7e9821f4701a3.

Both independent reviewers were blocker/major-clean. No confirmed findings require repair. The minor implementation observations were non-defects and are deferred without code changes.

Exact-head build and verify checks are green.