GAP-TOOLS-035: Grep Output Modes and Context Params

Description

Enhance babysitter's grep agentic tool to match CC's GrepTool feature set: output mode selection, separate before/after context lines, and line number toggle.

Current State

Babysitter's grep tool (in agenticTools.ts) wraps ripgrep with these params: pattern, path, glob, type, i (case-insensitive), context (lines around match), limit, offset, multiline.

Always returns matching lines with line numbers. No way to request file paths only, match counts, or separate before/after context.

Target State

Add these params to the grep agentic tool:

(file paths only -- maps to rg -l), 'count' (match counts per file -- maps to rg -c). Default: 'files_with_matches' (matches CC).

Maps to rg -n / rg --no-line-number.

currently controls post-processing slice.

• **output_mode**: 'content' (matching lines, current behavior), 'files_with_matches'
• **before_context** (or -B): Lines to show before each match (maps to rg -B).
• **after_context** (or -A): Lines to show after each match (maps to rg -A).
• **line_numbers** (or -n): Boolean toggle for line numbers in output. Default true.
• **head_limit**: Max output lines/entries. Default 250. Distinct from limit which

Implementation: straightforward ripgrep flag mapping. Each param maps directly to an rg flag. No architectural changes needed.

Dependencies

• None.

Key Files

Recommendation

Phase 1. Small effort, high value. The output_mode param is especially important -- files_with_matches mode is CC's default and is critical for codebase exploration.