What it does

Updates CLAUDE.md (and the @-referenced .prompts/project-info.prompttemplate) to match the current codebase:

• Corrects the bundling description: theia build now defaults to esbuild (webpack remains a fallback), via BundlerGenerator in application-manager.
• Fixes stale facts: Node.js ≥22 (per engines) and 78 packages.
• Adds read-on-demand pointers to doc/ files not previously referenced (code-organization, vscode-usage, api-management, api-testing, pull-requests, etc.).
• Documents the .github/ issue & PR templates so contributions follow them.
• Adds commit conventions (Conventional Commits) and a note to use npm, not yarn.

Docs-only change; no runtime code touched.

How to test

Review the rendered CLAUDE.md and .prompts/project-info.prompttemplate. Verify the bundling claim against dev-packages/application-manager/src/generator/bundler-generator.ts (preferESBuild) and the esbuild.mjs configs in the example apps.

Follow-ups

None.

Breaking changes

• This PR introduces breaking changes and requires careful review.

Attribution

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines
• User-facing text is internationalized using the nls service (N/A — docs only)