Add ECS linter and formatter

[mikecovlee]

No description provided.

[Copilot]

Pull request overview

Adds first-party linting and formatting support to the ECS toolchain by extending the parser to support a strict/comment-preserving mode, introducing new ecs_lint / ecs_format packages, wiring them into the ecs bootstrap wrapper, and adding unit tests + fixtures to validate behavior.

Changes:

• Extend ecs_parser with strict/non-strict lexical + syntax modes to preserve comments/newlines for formatter use.
• Add ecs_lint (AST + source-based lint rules) and ecs_format (AST-driven formatter using strict grammar).
• Add wrapper flags (-l, -F, -n) and unit tests/fixtures to exercise parser modes and lint rules.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
unit_tests/test_parser_modes.ecs	Adds unit coverage for strict vs non-strict parser mode behavior.
unit_tests/test_lint_rules.ecs	Adds unit coverage asserting expected lint rule detections and severity counts.
tests/test_lint.ecs	Adds an intentionally “bad style” fixture file to trigger lint rules.
imports/ecs.csp	Introduces lambda_base marker type and updates function type validation for lambdas.
imports/ecs_parser.csp	Adds strict-aware lexical/syntax generation and updates default grammar wiring.
imports/ecs_lint.csp	New linter implementation (rules + AST walker + report printing).
imports/ecs_generator.csp	Updates lambda body handling and generated lambda struct base type; improves REPL error cleanup.
imports/ecs_format.csp	New formatter implementation using strict grammar and comment-aware line handling.
imports/ecs_bootstrap.csp	Adds ecs -l / ecs -F / ecs -n modes, adjusts cache behavior, and updates exit codes.
csbuild/ecs.json	Bumps ecs package version to reflect runtime type-system change.
csbuild/ecs_parser.json	Bumps ecs_parser package version to reflect strict mode API.
csbuild/ecs_lint.json	Adds build package definition for the new linter.
csbuild/ecs_generator.json	Bumps ecs_generator package version for lambda-related changes.
csbuild/ecs_format.json	Adds build package definition for the new formatter.
csbuild/ecs_bootstrap.json	Bumps wrapper version and adds dependencies on new lint/format packages.

Comments suppressed due to low confidence (1)

imports/ecs_lint.csp:400

• The position for trailing consecutive blank lines at EOF uses 0-based line indexes (ctx.code_buff.size - blank_count). This will point to the wrong line in reports; it should be 1-based like other parsergen positions.

 if blank_count > 2
ctx.add_issue({1, ctx.code_buff.size - blank_count}, "Too many consecutive blank lines (" + to_string(blank_count) + ").", SEVERITY_INFO, "consecutive_blank_lines")
end

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.