chore(release): bump version to 7.1.0

[JegernOUTT]

Update version across all components:

• IntelliJ plugin (gradle.properties)
• refact-chat-js (package.json, package-lock.json)
• VSCode extension (package.json + dependency)
• refact-lsp engine (Cargo.toml)

Add update-dependencies.sh script for IntelliJ plugin to automate GUI build and LSP binary bundling.

[JegernOUTT]

Root cause analysis

The CI failure was not fixed by skipLibCheck: true alone (commit 41649a4) because the issue is a parser error, not a type-checking error.

Dependency chain

refact-chat-js → mermaid@11.x → @types/d3@^7.4.3 → @types/d3-dispatch@3.0.6+

mermaid@11.x incorrectly lists @types/d3 as a production dependency (not devDependency), which causes the VSCode extension to install @types/d3-dispatch@3.0.6+ as a transitive dep.

Why skipLibCheck didn't help

@types/d3-dispatch@3.0.6 uses const type parameters (introduced in TypeScript 5.0). TypeScript 4.x cannot even parse this syntax — it fails with:

TS1139: Type parameter declaration expected

skipLibCheck only skips type-checking of .d.ts files; parsing still happens and fails with TS 4.x.

Fix (commit 2ce0637)

Upgraded TypeScript from ^4.7.4 → ^5.0.0 in devDependencies. TypeScript 5.x can parse the new const type parameter syntax.