fix(): add missing author ioannis-tsironis and migrate to Angular v23

[tomalaforge]

Fixes a build error caused by a missing author reference: the file `Ioannis-Tsironis.json` used a capital `I`, while Astro's glob loader normalizes entry IDs to lowercase, making the actual ID `ioannis-tsironis`. Renamed the file to `ioannis-tsironis.json` and updated the `author` field in `55-back-button-navigation.md` to match. Also includes the Angular v23 NX migration: updated `package.json`, `pnpm-lock.yaml`, `nx.json`, Cypress configs, and converted `libs/decoupling` ESLint config to flat config format.

Summary by CodeRabbit

• Updates

  • Upgraded Nx tooling to version 23.1.1.
  • Added migration support for updated Jest, Vitest, ESLint, Angular, Vite, and Cypress configurations.
  • Improved Cypress component-test consistency in CI environments.
  • Disabled workspace analytics.

• Documentation

  • Added migration guidance for ESLint flat config, Vitest 3/4, and type-checking.
  • Corrected documentation attribution and standardized formatting.

• Maintenance

  • Updated linting configuration for improved workspace consistency.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: b72e6941-7c8c-4254-b7b5-11e7b0ce34ce

📥 Commits

Reviewing files that changed from the base of the PR and between f718e25 and 947b84d.

⛔ Files ignored due to path filters (2)

• docs/pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml
• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (21)

• apps/forms/62-crossfield-validation-signal-form/src/test-setup.ts
• apps/rxjs/14-race-condition/cypress.config.ts
• apps/testing/17-router/cypress.config.ts
• apps/testing/18-nested-components/cypress.config.ts
• apps/testing/19-input-output/cypress.config.ts
• apps/testing/20-modal/cypress.config.ts
• apps/testing/29-real-life-application/cypress.config.ts
• docs/astro.config.mjs
• docs/src/content.config.ts
• docs/src/content/docs/challenges/angular/55-back-button-navigation.md
• docs/src/pages/api/sponsors.js
• libs/decoupling/.eslintrc.json
• libs/decoupling/eslint.config.mjs
• migrations.json
• nx.json
• package.json
• tools/ai-migrations/@nx/eslint/23.1.1/convert-to-flat-config.md
• tools/ai-migrations/@nx/eslint/23.1.1/migrate-ban-types-rule.md
• tools/ai-migrations/@nx/jest/23.1.1/verify-typecheck.md
• tools/ai-migrations/@nx/vite/23.1.1/ai-instructions-for-vitest-3.md
• tools/ai-migrations/@nx/vite/23.1.1/ai-instructions-for-vitest-4.md

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📝 Walkthrough

Walkthrough

The repository upgrades Nx packages to 23.1.1, registers related migrations, adds migration guidance, updates ESLint and workspace configuration, disables Cypress just-in-time compilation, and applies formatting and documentation metadata corrections.

Changes

Nx 23.1 migration

Layer / File(s)	Summary
Workspace packages and lint configuration package.json, nx.json, libs/decoupling/eslint.config.mjs	Nx packages move to 23.1.1. Workspace lint inputs and analytics settings change. The decoupling library receives a flat ESLint configuration.
Nx migration registry migrations.json	The registry adds Nx 23.0–23.1 migrations for Jest, JavaScript, Vitest, Devkit, ESLint, Workspace, Angular, Vite, and Cypress. Two older entries are removed.
Migration guidance tools/ai-migrations/@nx/eslint/23.1.1/*, tools/ai-migrations/@nx/jest/23.1.1/*, tools/ai-migrations/@nx/vite/23.1.1/*	Guides describe ESLint flat-config conversion, ban-types replacement, Jest typecheck verification, and Vitest 3 and 4 migrations.
Cypress component configuration apps/rxjs/14-race-condition/cypress.config.ts, apps/testing/*/cypress.config.ts	Six Cypress configurations set justInTimeCompile to false.

Repository formatting and metadata

Layer / File(s)	Summary
Formatting and documentation metadata apps/forms/62-crossfield-validation-signal-form/src/test-setup.ts, docs/astro.config.mjs, docs/src/content.config.ts, docs/src/content/docs/challenges/angular/55-back-button-navigation.md, docs/src/pages/api/sponsors.js	Imports and configuration structures are reformatted. The challenge author metadata is lowercased. The sponsor error response keeps its existing behavior.

Estimated code review effort: 4 (Complex) | ~45 minutes

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch tomalaforge/fix-missing-author-ioannis-tsironis

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