major refactoring around parsing and dsl

[jac18281828]

No description provided.

[Copilot]

Pull Request Overview

A major refactoring that centralizes CLI invocation in tests, enhances the DSL parsing capabilities (conditional templates, regex operator, improved truthiness), and restructures core parsing modules.

• Added a parsm_command() helper across all integration tests and updated test cases to use it.
• Extended the DSL parser and engine to support the ~= regex operator, conditional templates, and richer truthiness rules.
• Introduced a parser registry and improved format detection heuristics in parser_registry.rs and format_detector.rs.

Reviewed Changes

Copilot reviewed 30 out of 34 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/*	Consolidated command invocation via parsm_command() and revised test inputs/outputs
src/parser_registry.rs	Added ParserRegistry for prioritized format parsing and fallback
src/format_detector.rs	Improved heuristics for JSON array, YAML, TOML, CSV, and logfmt detection
src/filter.rs	Added Regex and Conditional support, enhanced truthiness and comparison logic
src/dsl/template_parser.rs	Refactored template parsing to handle braced, bracketed, and numeric variables
src/dsl/operators.rs	Replaced ~ with ~= for regex matching, updated operator definitions

Comments suppressed due to low confidence (1)

src/filter.rs:117

• A new TemplateItem::Conditional variant was introduced but there are no unit tests covering its behavior. Add tests to verify rendering of conditionals for both truthy and falsy branches.

pub enum TemplateItem {