issues-37 | Add Pint linter snippet

[prog-time]

Summary

Adds a pint snippet to the linters category — Laravel/PHP code-style check via vendor/bin/pint --test.

The catalog ships phpcs, but the de-facto standard in Laravel projects is Laravel Pint (PHP-CS-Fixer wrapper, PSR-12 + Laravel preset). Direct sibling of rubocop/ruff. Pint needs no mandatory config (pint.json is optional), so the script guards on the binary, not a config file.

Changes (standard snippet convention)

• scripts/shell/linters/pint.sh — set -euo pipefail; resolves vendor/bin/pint or pint on PATH, else ::error::; runs pint --test (check-only, no auto-fix).
• tests/linters/pint.bats — covers: pint not installed, clean code, style issues.
• scripts/CI/linters/pint.yml — source job.
• CI/linters/pint.yml — assembled output.
• README.md — new catalog row.

Verification

• bats tests/linters/pint.bats → 3/3 pass.
• assemble-ci.sh regenerates cleanly — existing CI/linters/*.yml unchanged; only the new file added.
• markdownlint README.md → clean.

Closes #37

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The task was generated using the MCP server — prog-time/mcp-github-issues.