chore(ai): update communication style

Author: JamieMason

.cursorrules

@@ -71,6 +71,7 @@ Every command: Create Context → Inspect Context → Run Command
 - Action-oriented: what to DO
 - Ground in facts: cite code/docs
 - Remove: "basically", "essentially", "in order to"
+- Use British English: "behaviour" not "behavior", "organised" not "organized", etc.
 
 ## Code Style
 

.notes/decision-trees.md

@@ -342,7 +342,7 @@ Is this a fundamentally new type of version specifier?
 1. **New command** → Follow checklist above
 2. **New config option** → Rcfile or Cli struct + merge logic
 3. **New version group type** → New VersionGroupVariant + validation logic
-4. **Performance optimization** → Run benchmarks before and after
+4. **Performance optimisation** → Run benchmarks before and after
 
 ### When Stuck
 

CONTRIBUTING.md

@@ -6,7 +6,7 @@ It is deployed to the npm registry as `syncpack` in the version range `syncpack@
 
 ## LLM-Assisted Development
 
-If you're using an LLM (like Claude, ChatGPT, or Copilot) to assist with development, see **[.notes/index.md](./.notes/index.md)** for a comprehensive development hub optimized for LLM context. It includes:
+If you're using an LLM (like Claude, ChatGPT, or Copilot) to assist with development, see **[.notes/index.md](./.notes/index.md)** for a comprehensive development hub optimised for LLM context. It includes:
 
 - Essential file locations and their purposes
 - Core data structures and their relationships

Cargo.toml

@@ -42,9 +42,9 @@ tokio = { version = "1", features = ["macros", "rt-multi-thread", "sync"] }
 default = []
 
 [profile.release]
-codegen-units = 1 # Reduce number of codegen units to increase optimizations
+codegen-units = 1 # Reduce number of codegen units to increase optimisations
 debug = false     # Remove debug information
-lto = true        # Enable Link Time Optimization
-opt-level = "z"   # Optimize for size rather than speed
+lto = true        # Enable Link Time Optimisation
+opt-level = "z"   # Optimise for size rather than speed
 panic = "abort"   # Abort on panic rather than unwinding
 strip = true      # Strip symbols from binary

src/group_selector.rs

@@ -116,7 +116,7 @@ impl GroupSelector {
       return false;
     }
 
-    // 3. Dependencies (pattern matching, optimized for common cases)
+    // 3. Dependencies (pattern matching, optimised for common cases)
     if self.has_dependency_filters && !self.matches_dependencies(descriptor) {
       return false;
     }

src/pattern_matcher.rs

@@ -1,14 +1,14 @@
 //! Fast pattern matching for dependency and package names.
 //!
-//! Optimizes common glob patterns into faster string operations:
+//! Optimises common glob patterns into faster string operations:
 //! - "react" → exact match (==)
 //! - "@aws-sdk/**" → prefix match (starts_with)
 //! - "**-loader" → suffix match (ends_with)
 //! - Complex patterns → full glob matching (fallback)
 
 use {globset::{Glob, GlobMatcher}, std::fmt};
 
-/// Pattern matcher optimized for common npm package name patterns.
+/// Pattern matcher optimised for common npm package name patterns.
 #[derive(Clone)]
 pub enum PatternMatcher {
   /// Exact string match: "react" → value == "react"