Fix all Clippy warnings across the server codebase (2411 insertions, 1341
deletions). Raise type-complexity-threshold to 750 and too-many-arguments
to 12 in .clippy.toml for idiomatic Bevy ECS system signatures. The server
now passes `cargo clippy -- --deny warnings` cleanly.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Background tier state machines (#95), NPC vision (#115), player-
awareness behavior (#244), skill system & combat flag (#91), social
propagation (#249), examine mechanic (#242), character pressure
framework (#248), save state data model (#256), tell state wiring
(#337). Protocol version bumped 13→14 for examine_result and
character_pressure snapshot fields.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>