Complete and highlight animations for the current ConditionState model

[ViTeXFTW]

Summary

Animation and IdleAnimation previously offered no model-specific suggestions and highlighted animation names as plain strings. They now suggest qualified animation names compatible with the current ConditionState model's skeleton and highlight those names as references.

• Index raw, compressed, and morph animation headers from loose W3D files and BIG archives, retaining model-to-skeleton associations and rebuilding older index caches.
• Resolve explicit state models and models inherited from the preceding DefaultConditionState in the same draw module, including TransitionState. Respect model overrides and asset removal.
• Replace the entire qualified name when accepting completion, preserve optional distance/repeat arguments, and highlight those arguments as numbers.
• Add completion specs, parser/index regression tests, archive/cache coverage, and wire-level completion and semantic-token checks.

Tests

• Passed cargo test --workspace --quiet (corpus and opt-in benchmark tests remain ignored).
• Passed cargo clippy --locked --all-targets --all-features -- -D warnings.
• Passed cargo fmt --all --check and git diff --check.
• Built the server and passed all stdio end-to-end checks, including animation completion and full/range semantic highlighting.
• No schema or opener-oracle changes; the real-game corpus gate was not required.

Checklist

• I kept the change focused.
• I ran the relevant checks or explained why they were skipped.
• I did not commit generated artifacts, game source, corpus data, or secrets.

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge; no concrete correctness, security, or repository-rule issue remains.

Summary

• Extracts raw, compressed, and morph animation headers from loose W3D files and BIG archives.
• Associates models and animations by skeleton while respecting indexed overrides and removals.
• Resolves explicit and inherited ConditionState models for completion.
• Replaces complete qualified animation names while preserving quotes and optional numeric arguments.
• Adds unit, specification, cache, archive, and end-to-end regression coverage.